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• How to connect 2 virtual machines(VMWare Workstation 7.0) in a separate network?

  - by goluhaque

  There are supposed to be 2 networks: i) The first one is the one which all the virtual machines and the host share(Host-only condition). This one is easily achievable for me, as an amateurish beginner. ii)The second network is the one in which only 2 virtual machines are to be connected. These 2 virtual machines should also be connected to the Network(i). I understand that for the 2 virtual hosts that are to be connected in a separate networks simultaneously, it means that they need to have 2 IPs, and hence 2 ports(physical)/ethernet interfaces?

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• Possible to run system-config-network during %post kickstart?

  - by tore-

  Hello, I'm currently trying to figure out a smart way to set IP, hostname, gateway and DNS settings during a kickstart (with user input during the kickstart). Doing this with firstboot after the install is not acceptable, so this must be done during %post. I've tried to run the system-config-network tool during post in tty6: #!/bin/sh chvt 6 exec < /dev/tty6 > /dev/tty6 /usr/bin/system-config-network-tui This doesn't work since for some reason I'm unable to catch user input. I would prefer to use built in tools to change this during post, rather than write my own bash script to do this, since using the provided tools is less likely to break anything. Does someone done anything like this or similar, and made it work? Thanks

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• South migration error: NoMigrations exception for django.contrib.auth

  - by danpalmer

  I have been using South on my project for a while, but I recently did a huge amount of development and changed development machine and I think something messed up in the process. The project works fine, but I can't apply migrations. Whenever I try to apply a migration I get the following traceback: danpalmer:pest Dan$ python manage.py migrate frontend Traceback (most recent call last): File "manage.py", line 11, in <module> execute_manager(settings) File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 362, in execute_manager utility.execute() File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 303, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 195, in run_from_argv self.execute(*args, **options.__dict__) File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 222, in execute output = self.handle(*args, **options) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/management/commands/migrate.py", line 102, in handle delete_ghosts = delete_ghosts, File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/__init__.py", line 182, in migrate_app applied = check_migration_histories(applied, delete_ghosts) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/__init__.py", line 85, in check_migration_histories m = h.get_migration() File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/models.py", line 34, in get_migration return self.get_migrations().migration(self.migration) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/models.py", line 31, in get_migrations return Migrations(self.app_name) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 60, in __call__ self.instances[app_label] = super(MigrationsMetaclass, self).__call__(app_label_to_app_module(app_label), **kwds) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 88, in __init__ self.set_application(application, force_creation, verbose_creation) File "/Library/Python/2.6/site-packages/South-0.7-py2.6.egg/south/migration/base.py", line 159, in set_application raise exceptions.NoMigrations(application) south.exceptions.NoMigrations: Application '<module 'django.contrib.auth' from '/Library/Python/2.6/site-packages/django/contrib/auth/__init__.pyc'>' has no migrations. I am not that experienced with South and I haven't met this error before. The only helpful mention I can find online about this error is for pre-0.7 I think and I am on South 0.7. I ran 'easy_install -U South' just to make sure. Thanks for any help that you can provide. I really appreciate it.

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• How to connect to a network of activemq brokers from a client application?

  - by subh

  I have setup a network of brokers in activemq, how do i connect to that from my client application I tried with network:static:(tcp://master1.IP:61616,tcp://master2.IP:61617) and but I get the following exception javax.jms.JMSException: Uncategorized exception occured during JMS processing; nested exception is javax.jms.JMSException: Could not create Transport. Reason: java.io.IOException: Transport scheme NOT recognized: [network]; With static:(tcp://master1.IP:61616,tcp://master2.IP:61617) I get exception javax.jms.JMSException: Uncategorized exception occured during JMS processing; nested exception is javax.jms.JMSException: Could not create Transport. Reason: java.io.IOException: Transport scheme NOT recognized: [static]; Thanks

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• Ad hoc network between iPhone and non iPhone devices???

  - by gn-mithun

  Is it possible to set up a ad hoc network between an iPhone and a totally different device like camera,scanner or printer and build a data tunnel between them to exchange data or services. I believe iPhone does not have the provision of creating an ad hoc network. So i am assuming that the other device are the initiator of the ad hoc network. I tried doing the same with a mac book and iPhone and i could surf on the phone after enabling internet sharing. But i wanted to make sure that its possible with other devices as well I believe the upcoming WiFi Direct is a way to do it.

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• How I can I get my home network's IP address from a shell script?

  - by Steven Stewart-Gallus

  I have an account at a server at school, and a home computer that I need to work with sometimes. I have exchanged keys, and now only have one problem. While my school account has a name associated with it, "account_name@school", my home network does not. My plan is to have a script that every hour retrieves my home network's IP address, ssh'es into my school account and updates my ssh config file storing my home network's IP address. How can I retrieve my home computer's IP address from a shell script? P.S. Is this a sensible plan?

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• Special Activities in the OTN Lounge

  - by Bob Rhubart

  What is the OTN Lounge? It's the place for Oracle OpenWorld and JavaOne attendees to hang out, get off your feet, rest up between sessions, recharge your laptop, tablet, or phone, connect with other community members, pick the brains of subject matter experts and community leaders, enjoy some refreshments (coffee and soft drinks in the morning, beer in the afternoon), and avoid the crowds by watching keynote presentations on a plasma screen. But in addition to general chillaxin' the OTN Lounge also hosts several special activities throughout the week… OTN Lounge Special Activities Sunday Oracle Social Network Developer Challenge Kick-off   (7:00pm - 8:30pm)Want to learn more about Oracle Social Network? Love working with APIs? Enter the Oracle Social Network Developer Challenge and build your dream integration with Oracle's secure, purposeful social network for business. Demonstrate your skills, work with the latest and greatest and compete for $500 in Amazon gift cards. Go to theappslab.com/osnregisterr Read and agree to the terms and rules. Register yourself with your name, corporate email address, and company. Watch your inbox for a confirmation email from Oracle Social Network. Start coding (individual or teams welcome) Show off your work to the judges in the OTN Lounge, Wednesday, 4:00pm - 6:00pm Monday (Lounge hours: 8:00am - 7:00pm) RAC Attack (9:00am - 1:00pm) Learn about Oracle Real Application Clustering (RAC) in this collaborative event. You'll work with experts from the IOUG RAC SIG to get an Oracle Database 11gR2 RAC cluster running inside a virtual machine. For more information: RAC attack at Oracle Open World (Pythian Blog) RAC Attack - Oracle Cluster Database at Home/Events (WikiBooks) Oracle Social Network Developer Challenge Office Hours (4:00pm - 8:00pm)Meet the people behind Oracle Social Network. Tuesday (Lounge hours: 8:00am - 7:00pm) RAC Attack (9:00am - 1:00pm) Oracle Social Network Developer Challenge Office Hours (4:30pm - 8:00pm) Oracle Database / Oracle Fusion Middleware Tweet Meet (4:30pm - 6:00pm) Free as in beer! Oracle Database and Oracle Fusion Middleware tweeters, gather in the OTN Lounge for refreshments and conversation with fellow tweeters and Oracle Database and Middleware experts. Wednesday (Lounge Hours: 8:00am - 6:00pm) RAC Attack (9:00am - 1:00pm) Oracle Social Network Developer Challenge Judging (4:00pm - 6:00pm) ADF Oracle ADF / Oracle Fusion Middleware Meet-up (4:30pm - 5:30pm) Join other Oracle ADF and Oracle Fusion Middleware developers and meet the product managers and engineers behind Oracle ADF, ADF Mobile, and ADF Essentials. Did we mention free beer? Thursday (Lounge Hours: 8:00am - 2:00pm) RAC Attack (9:00am - 1:00pm) The OTN Lounge is located in the Howard St .tent, located by no small coincidence on Howard St. between 3rd and 4th, directly between Moscone North and Moscone South. An Oracle OpenWorld or JavaOne conference badge is required for access to the OTN Lounge.

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• The Dude

  A freeware network monitor that maps and monitors your network and provides alerts when network issues pop up

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• How do I prevent missing network from slowing down boot-up?

  - by Ravi S Ghosh

  I have been having rather slow boot on Ubuntu 12.04. Lately, I tried to figure out the reason and it seems to be the network connection which does not get connected and requires multiple attempts. Here is part of dmesg [ 2.174349] EXT4-fs (sda2): INFO: recovery required on readonly filesystem [ 2.174352] EXT4-fs (sda2): write access will be enabled during recovery [ 2.308172] firewire_core: created device fw0: GUID 384fc00005198d58, S400 [ 2.333457] usb 7-1.2: new low-speed USB device number 3 using uhci_hcd [ 2.465896] EXT4-fs (sda2): recovery complete [ 2.466406] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) [ 2.589440] usb 7-1.3: new low-speed USB device number 4 using uhci_hcd **[ 18.292029] ADDRCONF(NETDEV_UP): eth0: link is not ready** [ 18.458958] udevd[377]: starting version 175 [ 18.639482] Adding 4200960k swap on /dev/sda5. Priority:-1 extents:1 across:4200960k [ 19.314127] wmi: Mapper loaded [ 19.426602] r592 0000:09:01.2: PCI INT B -> GSI 18 (level, low) -> IRQ 18 [ 19.426739] r592: driver successfully loaded [ 19.460105] input: Dell WMI hotkeys as /devices/virtual/input/input5 [ 19.493629] lp: driver loaded but no devices found [ 19.497012] cfg80211: Calling CRDA to update world regulatory domain [ 19.535523] ACPI Warning: _BQC returned an invalid level (20110623/video-480) [ 19.539457] acpi device:03: registered as cooling_device2 [ 19.539520] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/LNXVIDEO:00/input/input6 [ 19.539568] ACPI: Video Device [M86] (multi-head: yes rom: no post: no) [ 19.578060] Linux video capture interface: v2.00 [ 19.667708] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.2) [ 19.763171] r852 0000:09:01.3: PCI INT B -> GSI 18 (level, low) -> IRQ 18 [ 19.763258] r852: driver loaded successfully [ 19.854769] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1.2/7-1.2:1.0/input/input7 [ 19.854864] generic-usb 0003:045E:00DD.0001: input,hidraw0: USB HID v1.11 Keyboard [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1d.1-1.2/input0 [ 19.878605] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1.2/7-1.2:1.1/input/input8 [ 19.878698] generic-usb 0003:045E:00DD.0002: input,hidraw1: USB HID v1.11 Device [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1d.1-1.2/input1 [ 19.902779] input: DELL DELL USB Laser Mouse as /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1.3/7-1.3:1.0/input/input9 [ 19.925034] generic-usb 0003:046D:C063.0003: input,hidraw2: USB HID v1.10 Mouse [DELL DELL USB Laser Mouse] on usb-0000:00:1d.1-1.3/input0 [ 19.925057] usbcore: registered new interface driver usbhid [ 19.925059] usbhid: USB HID core driver [ 19.942362] uvcvideo: Found UVC 1.00 device Laptop_Integrated_Webcam_2M (0c45:63ea) [ 19.947004] input: Laptop_Integrated_Webcam_2M as /devices/pci0000:00/0000:00:1a.7/usb1/1-6/1-6:1.0/input/input10 [ 19.947075] usbcore: registered new interface driver uvcvideo [ 19.947077] USB Video Class driver (1.1.1) [ 20.145232] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree: [ 20.145235] Copyright(c) 2003-2011 Intel Corporation [ 20.145327] iwlwifi 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 20.145357] iwlwifi 0000:04:00.0: setting latency timer to 64 [ 20.145402] iwlwifi 0000:04:00.0: pci_resource_len = 0x00002000 [ 20.145404] iwlwifi 0000:04:00.0: pci_resource_base = ffffc90000674000 [ 20.145407] iwlwifi 0000:04:00.0: HW Revision ID = 0x0 [ 20.145531] iwlwifi 0000:04:00.0: irq 46 for MSI/MSI-X [ 20.145613] iwlwifi 0000:04:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54 [ 20.145720] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 20.167535] iwlwifi 0000:04:00.0: device EEPROM VER=0x11f, CALIB=0x4 [ 20.167538] iwlwifi 0000:04:00.0: Device SKU: 0Xf0 [ 20.167567] iwlwifi 0000:04:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels [ 20.172779] fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel. [ 20.172783] Disabling lock debugging due to kernel taint [ 20.250115] [fglrx] Maximum main memory to use for locked dma buffers: 3759 MBytes. [ 20.250567] [fglrx] vendor: 1002 device: 9553 count: 1 [ 20.251256] [fglrx] ioport: bar 1, base 0x2000, size: 0x100 [ 20.251271] pci 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 20.251277] pci 0000:01:00.0: setting latency timer to 64 [ 20.251559] [fglrx] Kernel PAT support is enabled [ 20.251578] [fglrx] module loaded - fglrx 8.96.4 [Mar 12 2012] with 1 minors [ 20.310385] iwlwifi 0000:04:00.0: loaded firmware version 8.83.5.1 build 33692 [ 20.310598] Registered led device: phy0-led [ 20.310628] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain [ 20.372306] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs' [ 20.411015] psmouse serio1: synaptics: Touchpad model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04733/0xa40000/0xa0000 [ 20.454232] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input11 [ 20.545636] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain [ 20.545640] cfg80211: World regulatory domain updated: [ 20.545642] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 20.545644] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 20.545647] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 20.545649] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 20.545652] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 20.545654] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 20.609484] type=1400 audit(1340502633.160:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=693 comm="apparmor_parser" [ 20.609494] type=1400 audit(1340502633.160:3): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=642 comm="apparmor_parser" [ 20.609843] type=1400 audit(1340502633.160:4): apparmor="STATUS" operation="profile_load" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=693 comm="apparmor_parser" [ 20.609852] type=1400 audit(1340502633.160:5): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=642 comm="apparmor_parser" [ 20.610047] type=1400 audit(1340502633.160:6): apparmor="STATUS" operation="profile_load" name="/usr/lib/connman/scripts/dhclient-script" pid=693 comm="apparmor_parser" [ 20.610060] type=1400 audit(1340502633.160:7): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=642 comm="apparmor_parser" [ 20.610476] type=1400 audit(1340502633.160:8): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=814 comm="apparmor_parser" [ 20.610829] type=1400 audit(1340502633.160:9): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=814 comm="apparmor_parser" [ 20.611035] type=1400 audit(1340502633.160:10): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=814 comm="apparmor_parser" [ 20.661912] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 [ 20.661982] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X [ 20.662013] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 [ 20.770289] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12 [ 20.770689] snd_hda_intel 0000:01:00.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 20.770786] snd_hda_intel 0000:01:00.1: irq 48 for MSI/MSI-X [ 20.770815] snd_hda_intel 0000:01:00.1: setting latency timer to 64 [ 20.994040] HDMI status: Codec=0 Pin=3 Presence_Detect=0 ELD_Valid=0 [ 20.994189] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input13 [ 21.554799] vesafb: mode is 1024x768x32, linelength=4096, pages=0 [ 21.554802] vesafb: scrolling: redraw [ 21.554804] vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0 [ 21.557342] vesafb: framebuffer at 0xd0000000, mapped to 0xffffc90011800000, using 3072k, total 3072k [ 21.557498] Console: switching to colour frame buffer device 128x48 [ 21.557516] fb0: VESA VGA frame buffer device [ 21.987338] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro [ 22.184693] EXT4-fs (sda6): mounted filesystem with ordered data mode. Opts: (null) [ 27.362440] iwlwifi 0000:04:00.0: RF_KILL bit toggled to disable radio. [ 27.436988] init: failsafe main process (986) killed by TERM signal [ 27.970112] ppdev: user-space parallel port driver [ 28.198917] Bluetooth: Core ver 2.16 [ 28.198935] NET: Registered protocol family 31 [ 28.198937] Bluetooth: HCI device and connection manager initialized [ 28.198940] Bluetooth: HCI socket layer initialized [ 28.198941] Bluetooth: L2CAP socket layer initialized [ 28.198947] Bluetooth: SCO socket layer initialized [ 28.226135] Bluetooth: RFCOMM TTY layer initialized [ 28.226141] Bluetooth: RFCOMM socket layer initialized [ 28.226143] Bluetooth: RFCOMM ver 1.11 [ 28.445620] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 28.445623] Bluetooth: BNEP filters: protocol multicast [ 28.524578] type=1400 audit(1340502641.076:11): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=1052 comm="apparmor_parser" [ 28.525018] type=1400 audit(1340502641.076:12): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=1052 comm="apparmor_parser" [ 28.629957] type=1400 audit(1340502641.180:13): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=1105 comm="apparmor_parser" [ 28.630325] type=1400 audit(1340502641.180:14): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1105 comm="apparmor_parser" [ 28.630535] type=1400 audit(1340502641.180:15): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=1105 comm="apparmor_parser" [ 28.645266] type=1400 audit(1340502641.196:16): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper" pid=1104 comm="apparmor_parser" **[ 28.751922] ADDRCONF(NETDEV_UP): wlan0: link is not ready** [ 28.753653] tg3 0000:08:00.0: irq 49 for MSI/MSI-X **[ 28.856127] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 28.857034] ADDRCONF(NETDEV_UP): eth0: link is not ready** [ 28.871080] type=1400 audit(1340502641.420:17): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=1108 comm="apparmor_parser" [ 28.871519] type=1400 audit(1340502641.420:18): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*" pid=1108 comm="apparmor_parser" [ 28.874905] type=1400 audit(1340502641.424:19): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=1113 comm="apparmor_parser" [ 28.875354] type=1400 audit(1340502641.424:20): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=1113 comm="apparmor_parser" [ 30.477976] tg3 0000:08:00.0: eth0: Link is up at 100 Mbps, full duplex [ 30.477979] tg3 0000:08:00.0: eth0: Flow control is on for TX and on for RX **[ 30.478390] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready** [ 31.110269] fglrx_pci 0000:01:00.0: irq 50 for MSI/MSI-X [ 31.110859] [fglrx] Firegl kernel thread PID: 1327 [ 31.111021] [fglrx] Firegl kernel thread PID: 1329 [ 31.111408] [fglrx] Firegl kernel thread PID: 1330 [ 31.111543] [fglrx] IRQ 50 Enabled [ 31.712938] [fglrx] Gart USWC size:1224 M. [ 31.712941] [fglrx] Gart cacheable size:486 M. [ 31.712945] [fglrx] Reserved FB block: Shared offset:0, size:1000000 [ 31.712948] [fglrx] Reserved FB block: Unshared offset:fc2b000, size:3d5000 [ 31.712950] [fglrx] Reserved FB block: Unshared offset:1fffb000, size:5000 [ 41.312020] eth0: no IPv6 routers present As you can see I get multiple instances of [ 28.856127] ADDRCONF(NETDEV_UP): eth0: link is not ready and then finally it becomes read and I get the message [ 30.478390] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready. I searched askubuntun, ubuntuforum, and the web but couldn't find a solution. Any help would be very much appreciated. Here is the bootchart

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• Cannot ping router with a static IP assigned?

  - by Uriah

  Alright. I am running Ubuntu LTS 12.04 and am trying to configure a local caching/master DNS server so I am using Bind9. First, here are some things via default DHCP: /etc/network/interfaces cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet dhcp # The primary network interface - STATIC #auto eth0 #iface eth0 inet static # address 192.168.2.113 # netmask 255.255.255.0 # network 192.168.2.0 # broadcast 192.168.2.255 # gateway 192.168.2.1 # dns-search uclemmer.net # dns-nameservers 192.168.2.113 8.8.8.8 /etc/resolv.conf cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 192.168.2.1 search uclemmer.net ifconfig ifconfig eth0 Link encap:Ethernet HWaddr 00:14:2a:82:d4:9e inet addr:192.168.2.103 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::214:2aff:fe82:d49e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1067 errors:0 dropped:0 overruns:0 frame:0 TX packets:2504 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:153833 (153.8 KB) TX bytes:214129 (214.1 KB) Interrupt:23 Base address:0x8800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:915 errors:0 dropped:0 overruns:0 frame:0 TX packets:915 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:71643 (71.6 KB) TX bytes:71643 (71.6 KB) ping ping -c 4 192.168.2.1 PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data. 64 bytes from 192.168.2.1: icmp_req=1 ttl=64 time=0.368 ms 64 bytes from 192.168.2.1: icmp_req=2 ttl=64 time=0.224 ms 64 bytes from 192.168.2.1: icmp_req=3 ttl=64 time=0.216 ms 64 bytes from 192.168.2.1: icmp_req=4 ttl=64 time=0.237 ms --- 192.168.2.1 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 2997ms rtt min/avg/max/mdev = 0.216/0.261/0.368/0.063 ms ping -c 4 google.com PING google.com (74.125.134.102) 56(84) bytes of data. 64 bytes from www.google-analytics.com (74.125.134.102): icmp_req=1 ttl=48 time=15.1 ms 64 bytes from www.google-analytics.com (74.125.134.102): icmp_req=2 ttl=48 time=11.4 ms 64 bytes from www.google-analytics.com (74.125.134.102): icmp_req=3 ttl=48 time=11.6 ms 64 bytes from www.google-analytics.com (74.125.134.102): icmp_req=4 ttl=48 time=11.5 ms --- google.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 11.488/12.465/15.118/1.537 ms ip route ip route default via 192.168.2.1 dev eth0 metric 100 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.103 As you can see, with DHCP everything seems to work fine. Now, here are things with static IP: /etc/network/interfaces cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface #auto eth0 #iface eth0 inet dhcp # The primary network interface - STATIC auto eth0 iface eth0 inet static address 192.168.2.113 netmask 255.255.255.0 network 192.168.2.0 broadcast 192.168.2.255 gateway 192.168.2.1 dns-search uclemmer.net dns-nameservers 192.168.2.1 8.8.8.8 I have tried dns-nameservers in various combos of *.2.1, *.2.113, and other reliable, public nameservers. /etc/resolv.conf cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 192.168.2.1 nameserver 8.8.8.8 search uclemmer.net Obviously, when I change the nameservers in the /etc/network/interfaces file, the nameservers change here too. ifconfig ifconfig eth0 Link encap:Ethernet HWaddr 00:14:2a:82:d4:9e inet addr:192.168.2.113 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::214:2aff:fe82:d49e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1707 errors:0 dropped:0 overruns:0 frame:0 TX packets:2906 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:226230 (226.2 KB) TX bytes:263497 (263.4 KB) Interrupt:23 Base address:0x8800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:985 errors:0 dropped:0 overruns:0 frame:0 TX packets:985 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:78625 (78.6 KB) TX bytes:78625 (78.6 KB) ping ping -c 4 192.168.2.1 PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data. --- 192.168.2.1 ping statistics --- 4 packets transmitted, 0 received, 100% packet loss, time 3023ms ping -c 4 google.com ping: unknown host google.com Lastly, here are my bind zone files: /etc/bind/named.conf.options cat /etc/bind/named.conf.options options { directory "/etc/bind"; // // // query-source address * port 53; notify-source * port 53; transfer-source * port 53; // If there is a firewall between you and nameservers you want // to talk to, you may need to fix the firewall to allow multiple // ports to talk. See http://www.kb.cert.org/vuls/id/800113 // If your ISP provided one or more IP addresses for stable // nameservers, you probably want to use them as forwarders. // Uncomment the following block, and insert the addresses replacing // the all-0's placeholder. // forwarders { // 0.0.0.0; // }; forwarders { // My local 192.168.2.113; // Comcast 75.75.75.75; 75.75.76.76; // Google 8.8.8.8; 8.8.4.4; // DNSAdvantage 156.154.70.1; 156.154.71.1; // OpenDNS 208.67.222.222; 208.67.220.220; // Norton 198.153.192.1; 198.153.194.1; // Verizon 4.2.2.1; 4.2.2.2; 4.2.2.3; 4.2.2.4; 4.2.2.5; 4.2.2.6; // Scrubit 67.138.54.100; 207.255.209.66; }; // // // //allow-query { localhost; 192.168.2.0/24; }; //allow-transfer { localhost; 192.168.2.113; }; //also-notify { 192.168.2.113; }; //allow-recursion { localhost; 192.168.2.0/24; }; //======================================================================== // If BIND logs error messages about the root key being expired, // you will need to update your keys. See https://www.isc.org/bind-keys //======================================================================== dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; }; /etc/bind/named.conf.local cat /etc/bind/named.conf.local // // Do any local configuration here // // Consider adding the 1918 zones here, if they are not used in your // organization //include "/etc/bind/zones.rfc1918"; zone "example.com" { type master; file "/etc/bind/zones/db.example.com"; }; zone "2.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/db.2.168.192.in-addr.arpa"; /etc/bind/zones/db.example.com cat /etc/bind/zones/db.example.com ; ; BIND data file for example.com interface ; $TTL 604800 @ IN SOA yossarian.example.com. root.example.com. ( 1343171970 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS yossarian.example.com. @ IN A 192.168.2.113 @ IN AAAA ::1 @ IN MX 10 yossarian.example.com. ; yossarian IN A 192.168.2.113 router IN A 192.168.2.1 printer IN A 192.168.2.200 ; ns01 IN CNAME yossarian.example.com. www IN CNAME yossarian.example.com. ftp IN CNAME yossarian.example.com. ldap IN CNAME yossarian.example.com. mail IN CNAME yossarian.example.com. /etc/bind/zones/db.2.168.192.in-addr.arpa cat /etc/bind/zones/db.2.168.192.in-addr.arpa ; ; BIND reverse data file for 2.168.192.in-addr interface ; $TTL 604800 @ IN SOA yossarian.example.com. root.example.com. ( 1343171970 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS yossarian.example.com. @ IN A 255.255.255.0 ; 113 IN PTR yossarian.example.com. 1 IN PTR router.example.com. 200 IN PTR printer.example.com. ip route ip route default via 192.168.2.1 dev eth0 metric 100 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.113 I can SSH in to the machine locally at *.2.113 or at whatever address is dynamically assigned when in DHCP "mode". *2.113 is in my router's range and I have ports open and forwarding to the server. Pinging is enabled on the router too. I briefly had a static configuration working but it died after the first reboot. Please let me know what other info you might need. I am beyond frustrated/baffled.

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• AdSense CPM and content topics

  - by Silver Moon

  I run a few blogs on topics like programming, linux tips and network security. I noticed the following: Till last year had only 1 blog that had posts on PHP, linux tips, network security etc. The AdSense RPM was around 1.00. Then I split the content into 3 separate blogs, one focused on web development/PHP/MySQL. second one focused on Linux/Windows how-tos and tips and third one focused on network security and related network topics. The Adsense RPM rose significantly for 2 blogs, and was 1.38 (PHP blog), 0.87 (tech tips blog) and 1.90 (network security blog). In the month of april 2013 the site on network security had the highest traffic and the Adsense income of that site was twice that of all three sites combined previously. My question is simple, does focusing on one topic lead to higher CPC/CPM?

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• Can't connect to WIFI after sleep Ubuntu 14.04

  - by user3380404

  After an upgrade over a previous version to Ubuntu 14.04 I have problems with connecting to WiFi. After suspending it won't reconnect to any existing network unless I restart the laptop. sudo lshw -C network: *-network description: Ethernet interface product: 82567LM Gigabit Network Connection vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 03 serial: 00:27:13:b4:d3:58 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=1.8-3 latency=0 link=no multicast=yes port=twisted pair resources: irq:45 memory:fc200000-fc21ffff memory:fc225000-fc225fff ioport:1840(size=32) *-network description: Wireless interface product: PRO/Wireless 5100 AGN [Shiloh] Network Connection vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 00 serial: 00:26:c6:c6:6b:c8 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-29-generic firmware=8.83.5.1 build 33692 ip=10.0.1.160 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:48 memory:f4200000-f4201fff

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• Software Architecture and MEF composition location

  - by Leonardo

  Introduction My software (a bunch of webapi's) consist of 4 projects: Core, FrontWebApi, Library and Administration. Library is a code library project that consists of only interfaces and enumerators. All my classes in other projects inherit from at least one interface, and this interface is in the library. Generally speaking, my interfaces define either Entities, Repositories or Controllers. This project references no other project or any special dlls... just the regular .Net stuff... Core is a class-library project where concrete implementation of Entities and Repositories. In some cases i have more than 1 implementation for a Repository (ex: one for azure table storage and one for regular Sql). This project handles the intelligence (business rules mostly) and persistence, and it references only the Library. FrontWebApi is a ASP.NET MVC 4 WebApi project that implements the controllers interfaces to handle web-requests (from a mobile native app)... It references the Core and the Library. Administration is a code-library project that represents a "optional-module", meaning: if it is present, it provides extra-features (such as Access Control Lists) to the application, but if its not, no problem. Administration is also only referencing the Library and implementing concrete classes of a few interfaces such as "IAccessControlEntry"... I intend to make this available with a "setup" that will create any required database table or anything like that. But it is important to notice that the Core has no reference to this project... Development Now, in order to have a decoupled code I decide to use IoC and because this is a small project, I decided to do it using MEF, specially because of its advertised "composition" capabilities. I arranged all the imports/exports and constructors and everything, but something is quite not perfect in my "mental-visualisation": Main Question Where should I "Compose" the objects? I mean: Technically, the only place where real implementation access is required is in the Repositories, because in order to retrieve data from wherever, entities instances will be necessary, and in all other places. The repositories could also provide a public "GetCleanInstanceOf()" right? Then all other places will be just fine working with the interfaces instead of concrete classes... Secondary Question Should "Administration" implement the concrete object for "IAccessControlGeneralRepository" or the Core should?

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• jQuery with SharePoint solutions

  - by KunaalKapoor

  For me jQuery is the 'Plan-B' for everything.And most of my projects include the use of jQuery for something or the other, so I decided to write a small note on what works best while using jQuery along with SharePoint.I prefer to use the jQuery JavaScript library, which is far more robust, easier to use, and allows for plugins. Follow the steps below to add jQuery to your master page. For office 365, the prefered location to add jQuery files is the "Site Asserts" library.Deployment Best PracticesThey are only as good as the context it’s being referenced.  In other words, take into account your world before applying it.Script your deployment options.  Folder in SPD. Use the file system.  Make external references.  The JQuery library is on the Microsoft Ajax Content Delivery Network. You may even choose to publish to and from the document library. (pros and cons to this approach)Reference options when referencing the script.ScriptLink will make sure it’s loaded at the top of the page and only loaded once. You need Visual Studio or SPDContent Editor Web Part (CEWP).  Drop it on the page and it’s there.  Easy but dangerousCustom Actions. Great for global deployments of JQuery.  Loads it on every page. It also works in Sandbox installations.Deployment Maintenance Dont’sDon’t add scripts directly to your Master Page. That’s way too much effort because the pages are hard to maintain.Don’t add scripts directly to the CEWP.  Use a content link instead. That will allow for reuse. If you or someone deletes the CEWP you won’t lose code in the web partSecurity.  Any scripts run with the same privileges of the current user.  In other words, you can’t get in trouble.Development Best PracticesDon’t abuse the DOM.  There are better options to load the DOM without hitting it 1,000 times.User other performance boosters.Try other libraries.  Try some custom codeAvoid String conversionMinify your filesUse CAML to reduce number of returns rowsOnly update your JQuery library AFTER RIGOROUS REGRESSION TESTINGCRUD operations can come with some funSP Services wraps SharePoint’s web services for executionThe Bing SDK is pretty easy to use.  You can add it to your page with a script,  put it into a content editor web part and connect it from the address parameters in a list.Steps:1. Go to jquery.com and download the latest jQuery library to your desktop. You want to get the compressed production version, not the development version.2. Open SharePoint Designer (SPD) and connect to the root level of your site's site collection.In SPD, open the "Style Library" folder. Create a folder named "Scripts" inside of the Style Library. Drag the jQuery library JavaScript file from your desktop into the Scripts folder.In the Scripts folder, create a new JavaScript file and name it (e.g. "actions.js").3. If you are using visual studio add a folder for js, you can create a new folder at the root level or if you prefer more cleaner solutions like me, you can use the layouts folder which cleans out on deactivation/uninstall.4. Within the <head> tag of the master page, add a script reference to the jQuery library just above the content place holder named "PlaceHolderAdditonalPageHead" (and above your custom CSS references, if applicable) as follows:<script src="/Style%20Library/Scripts/{jquery library file}.js" type="text/javascript"></script>Immediately after the jQuery library reference add a script reference to your custom scripts file as follows:<script src="/Style%20Library/Scripts/actions.js" type="text/javascript"></script>Inside your script tag, you can test if jQuery is already defined and if not, then add it to the page.<script type='text/javascript'>  if (typeof jQuery == 'undefined')    document.write('<scr'+'ipt type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></sc'+'ript>');</script>For the inquisitive few... Read on if you'd like :)Why jQuery on SharePoiny is AwesomeIt’s all about that visual wow factor.  You can get past that, “But it looks like SharePoint”  Take a long list view and put it into JQuery with pagination, etc and you are the hero.  It’s also about new controls you get with JQuery that you couldn’t do before.Why jQuery with SharePoint should be AwfulAlthough it’s fairly easy to get jQuery up and running. Copy/Paste can cause a problem.  If you don’t understand what it’s doing in the Client Object Model and the Document Object Model then it will do things on your site that were completely unexpected. Many blogs will note workarounds they employed on their sites. Why it’s not working: Debugging “sucks”.You need to develop small blocks of functionality, Test it by putting in some alerts  and console.log. Set breakpoints and monitor the DOM via Firebug and some IE development toolsPerformance - It happens all the time. But you should look at the tradeoffs. More time may give you more functionality.Consistency - ”But it works fine on my computer. So test on many browsers.  Take into account client resourcesHarm the Farm -  You need to code wisely and negatively test.  Don’t be the cause of a DoS attack that’s really JQuery asking for a resource over and over and over again.  So code wisely. Do negative testing. Monitor Server Resources.They also did a demo where JQuery did an endless loop to pull data from a list. It’s a poor decision but also an easy mistake.  They spiked their server resources within a couple seconds and had to shut down the call before it brought it down.ConclusionJQuery is now another tool in your tool kit. You don’t have to use it. Use it where it makes sense and where it helps you get your job done.Don’t abuse it, you will pay for it laterIt will add to page bloat so take that into accountIt can slow your performance

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• Wireless not working with an Atheros AR9285

  - by Neeraj

  I recently installed Ubuntu 12.04 and found my wireless card is not detected by OS. I tired to detect it by network manager but still it is not get output of the required command: toor@Linux:~$ sudo lshw -class network *-network description: Ethernet interface product: AR8131 Gigabit Ethernet vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: c0 serial: f0:de:f1:9e:22:4d size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=124.123.227.84 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:44 memory:f2400000-f243ffff ioport:2000(size=128) *-network UNCLAIMED description: Network controller product: AR9285 Wireless Network Adapter (PCI-Express) vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:04:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f2500000-f250ffff and toor@Linux:~$ rfkill list all 0: ideapad_wlan: Wireless LAN Soft blocked: yes Hard blocked: no 1: ideapad_bluetooth: Bluetooth Soft blocked: yes Hard blocked: no Please let me know what more info is required to resolve it.

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• Wireless does not work anymore after software update with Ubuntu 12.10 on a Dell Latitude E6230

  - by Andy

  I just installed Ubuntu 12.10 on my DELL Latitude E6230, on first boot wifi worked properly but when I updated the software it stopped working. I can't figure out the problem... The wireless network controller is a Broadcom Corporation BCM4313 802.11b/g/n Wireless Lan Controller (rev 01) "lshw -class network" gives, for the above controller: *-network UNCLAIMED description: Network controller product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f7d00000-f7d03fff After reading the answer to another similar question, I edited the file NetworkManager.conf to make "managed=true", but that did not make any difference, it is as if the wireless adapter were not there. In the "Network" setting window, I only see "Wired" and "Network proxy". Wireless has just disappeared: rfkill list all 0: hci0: Bluetooth Soft blocked: no Hard blocked: no and that's it! Nothing about the wireless controller... Any suggestions?

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• How important is to avoid name collisions between libraries belonging to different domains?

  - by Sergio

  I have written a small open source Java library for facilitating conversions between different types of objects (in the style of Google's gson, but quite more general). It seems to me that a nice natural name for my library is JConverter, after browsing in the web to see if another library with the same name already exists, I found a library with the same name for Joomla. My concrete question is: How important is to avoid naming collisions when creating an open source library if an existing library with the chosen name already exists in a complete different domain ? (in my concrete case, these are libraries even implemented for different languages).

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• LXC Container Networking

  - by digitaladdictions

  I just started to experiment with LXC containers. I was able to create a container and start it up but I cannot get dhcp to assign the container an IP address. If I assign a static address the container can ping the host IP but not outside the host IP. The host is CentOS 6.5 and the guest is Ubuntu 14.04LTS. I used the template downloaded by lxc-create -t download -n cn-01 command. If I am trying to get an IP address on the same subnet as the host I don't believe I should need the IP tables rule for masquerading but I added it anyways. Same with IP forwarding. I compiled LXC by hand from the following source https://linuxcontainers.org/downloads/lxc-1.0.4.tar.gz Host Operating System Version #> cat /etc/redhat-release CentOS release 6.5 (Final) #> uname -a Linux localhost.localdomain 2.6.32-431.20.3.el6.x86_64 #1 SMP Thu Jun 19 21:14:45 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Container Config #> cat /usr/local/var/lib/lxc/cn-01/config # Template used to create this container: /usr/local/share/lxc/templates/lxc-download # Parameters passed to the template: # For additional config options, please look at lxc.container.conf(5) # Distribution configuration lxc.include = /usr/local/share/lxc/config/ubuntu.common.conf lxc.arch = x86_64 # Container specific configuration lxc.rootfs = /usr/local/var/lib/lxc/cn-01/rootfs lxc.utsname = cn-01 # Network configuration lxc.network.type = veth lxc.network.flags = up lxc.network.link = br0 LXC default.confu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:f #> cat /usr/local/etc/lxc/default.conf lxc.network.type = veth lxc.network.link = br0 lxc.network.flags = up #> lxc-checkconfig Kernel configuration not found at /proc/config.gz; searching... Kernel configuration found at /boot/config-2.6.32-431.20.3.el6.x86_64 --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: enabled User namespace: enabled Network namespace: enabled Multiple /dev/pts instances: enabled --- Control groups --- Cgroup: enabled Cgroup namespace: enabled Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: /usr/local/bin/lxc-checkconfig: line 103: [: too many arguments enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled Macvlan: enabled Vlan: enabled File capabilities: /usr/local/bin/lxc-checkconfig: line 118: [: -gt: unary operator expected Note : Before booting a new kernel, you can check its configuration usage : CONFIG=/path/to/config /usr/local/bin/lxc-checkconfig Network Config (HOST) #> cat /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 TYPE=Bridge BOOTPROTO=dhcp ONBOOT=yes #> cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes TYPE=Ethernet IPV6INIT=no USERCTL=no BRIDGE=br0 #> cat /etc/networks default 0.0.0.0 loopback 127.0.0.0 link-local 169.254.0.0 #> ip a s 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:ff:ff inet6 fe80::20c:29ff:fe12:30f2/64 scope link valid_lft forever preferred_lft forever 3: pan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 42:7e:43:b3:61:c5 brd ff:ff:ff:ff:ff:ff 4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:0c:29:12:30:f2 brd ff:ff:ff:ff:ff:ff inet 10.60.70.121/24 brd 10.60.70.255 scope global br0 inet6 fe80::20c:29ff:fe12:30f2/64 scope link valid_lft forever preferred_lft forever 12: vethT6BGL2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether fe:a1:69:af:50:17 brd ff:ff:ff:ff:ff:ff inet6 fe80::fca1:69ff:feaf:5017/64 scope link valid_lft forever preferred_lft forever #> brctl show bridge name bridge id STP enabled interfaces br0 8000.000c291230f2 no eth0 vethT6BGL2 pan0 8000.000000000000 no #> cat /proc/sys/net/ipv4/ip_forward 1 # Generated by iptables-save v1.4.7 on Fri Jul 11 15:11:36 2014 *nat :PREROUTING ACCEPT [34:6287] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Fri Jul 11 15:11:36 2014 Network Config (Container) #> cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp #> ip a s 11: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:69:fb:42:ee:d7 brd ff:ff:ff:ff:ff:ff inet6 fe80::69:fbff:fe42:eed7/64 scope link valid_lft forever preferred_lft forever 13: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever

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• How to run Virtualbox on bridged and host-only networks?

  - by ril44

  I wish to run VirtualBox with my Ubuntu laptop on the home network (so the desktop PC can access it through the router) and also be able to ssh into the VirtualBox from host on the go (different network or with no internet). Previously, the only network adapter on the VB instance was a 'bridged connection' adapter. This allowed me to access the internet on the guest VB and for the other computers on the LAN + host to access it. However, whenever I took my laptop off the network, I could no longer access the guest from host. I read that I needed to enable a host-only adapter to access it off the network and a NAT adapter is used to access the internet from guest. My question is can I run a host-only adapter + a NAT adapter alongside a bridged network adapter in VirtualBox? I am confused what I would put inside /etc/hosts? Would I put both IP's (host-only and bridged) with the same servername in /etc/hosts?

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• Installed Perl DBI Module Can't Be Found

  - by Russell C.

  I'm trying to setup a Perl development environment on my Mac laptop and have been having a really hard time getting it working. I thought I had everything configured correctly but when I try to run a sample script it is reporting errors with the DBI module and can't access the DB. Here is what is reported in the Apache error logs: [Fri Apr 30 23:11:33 2010] [error] [client 127.0.0.1] Can't locate DBI.pm in @INC (@INC contains: /Library/Perl/Updates/5.10.0/darwin-thread-multi-2level /Library/Perl/Updates/5.10.0 /System/Library/Perl/5.10.0/darwin-thread-multi-2level /System/Library/Perl/5.10.0 /Library/Perl/5.10.0/darwin-thread-multi-2level /Library/Perl/5.10.0 /Network/Library/Perl/5.10.0/darwin-thread-multi-2level /Network/Library/Perl/5.10.0 /Network/Library/Perl /System/Library/Perl/Extras/5.10.0/darwin-thread-multi-2level /System/Library/Perl/Extras/5.10.0 .) at main.pm line 5. I downloaded and installed both modules manually to work with MAMP using the following commands as specified in this forum post: For DBI 1. cd /Library/Perl/DBI-1.611 2. sudo Perl Makefile.PL 3. sudo make 4. sudo make install For DBD 1. cd /Library/Perl/DBD-mysql-4.014 2. sudo Perl Makefile.PL --mysql_config=/Applications/MAMP/Library/bin/mysql_config 3. sudo make 4. sudo make install What I noticed while running the above commands is that the files seems to be getting installed in the '/opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/' directory which doesn't seem to be one of the search directories that Apache mentions in the error at the beginning of this post. Here is what I'm seeing during the install: $ sudo make install Files found in blib/arch: installing files in blib/lib into architecture dependent library tree Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/DBI.bundle Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/dbipport.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/DBIXS.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/dbixs_rev.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/Driver.xst Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/Driver_xst.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/TASKS.pod Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/DBM.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/File.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/Gofer.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/Changes.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/DBD.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/Profile.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/ProxyServer.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/PurePerl.pm Installing /opt/local/share/man/man3/DBD::DBM.3pm Installing /opt/local/share/man/man3/DBD::File.3pm Installing /opt/local/share/man/man3/DBD::Gofer.3pm Installing /opt/local/share/man/man3/DBI.3pm Installing /opt/local/share/man/man3/DBI::DBD.3pm Installing /opt/local/share/man/man3/DBI::Profile.3pm Installing /opt/local/share/man/man3/DBI::ProxyServer.3pm Installing /opt/local/share/man/man3/DBI::PurePerl.3pm Installing /opt/local/share/man/man3/TASKS.3pm Installing /opt/local/bin/dbiprof Installing /opt/local/bin/dbiproxy Writing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/.packlist Appending installation info to /opt/local/lib/perl5/5.8.9/darwin-2level/perllocal.pod My question is, what am I doing wrong and how can I either 1) Get Apache to look in the right directory where the DBD & DBI modules are installed or 2) Update the way I'm installing the module to install them into one of the search directories. I honestly don't know what option makes more sense and could use guidance on that as well. As you can probably tell I'm pretty lost at the moment. Please help!!!

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• How can I install Perl's DBI on Mac OS X so Apache can find it?

  - by Russell C.

  I'm trying to setup a Perl development environment on my Mac laptop and have been having a really hard time getting it working. I thought I had everything configured correctly but when I try to run a sample script it is reporting errors with the DBI module and can't access the DB. Here is what is reported in the Apache error logs: [Fri Apr 30 23:11:33 2010] [error] [client 127.0.0.1] Can't locate DBI.pm in @INC (@INC contains: /Library/Perl/Updates/5.10.0/darwin-thread-multi-2level /Library/Perl/Updates/5.10.0 /System/Library/Perl/5.10.0/darwin-thread-multi-2level /System/Library/Perl/5.10.0 /Library/Perl/5.10.0/darwin-thread-multi-2level /Library/Perl/5.10.0 /Network/Library/Perl/5.10.0/darwin-thread-multi-2level /Network/Library/Perl/5.10.0 /Network/Library/Perl /System/Library/Perl/Extras/5.10.0/darwin-thread-multi-2level /System/Library/Perl/Extras/5.10.0 .) at main.pm line 5. I downloaded and installed both modules manually to work with MAMP using the following commands as specified in this forum post: For DBI 1. cd /Library/Perl/DBI-1.611 2. sudo Perl Makefile.PL 3. sudo make 4. sudo make install For DBD 1. cd /Library/Perl/DBD-mysql-4.014 2. sudo Perl Makefile.PL --mysql_config=/Applications/MAMP/Library/bin/mysql_config 3. sudo make 4. sudo make install What I noticed while running the above commands is that the files seems to be getting installed in the '/opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/' directory which doesn't seem to be one of the search directories that Apache mentions in the error at the beginning of this post. Here is what I'm seeing during the install: $ sudo make install Files found in blib/arch: installing files in blib/lib into architecture dependent library tree Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/DBI.bundle Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/dbipport.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/DBIXS.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/dbixs_rev.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/Driver.xst Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/Driver_xst.h Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/TASKS.pod Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/DBM.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/File.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBD/Gofer.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/Changes.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/DBD.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/Profile.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/ProxyServer.pm Installing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/DBI/PurePerl.pm Installing /opt/local/share/man/man3/DBD::DBM.3pm Installing /opt/local/share/man/man3/DBD::File.3pm Installing /opt/local/share/man/man3/DBD::Gofer.3pm Installing /opt/local/share/man/man3/DBI.3pm Installing /opt/local/share/man/man3/DBI::DBD.3pm Installing /opt/local/share/man/man3/DBI::Profile.3pm Installing /opt/local/share/man/man3/DBI::ProxyServer.3pm Installing /opt/local/share/man/man3/DBI::PurePerl.3pm Installing /opt/local/share/man/man3/TASKS.3pm Installing /opt/local/bin/dbiprof Installing /opt/local/bin/dbiproxy Writing /opt/local/lib/perl5/site_perl/5.8.9/darwin-2level/auto/DBI/.packlist Appending installation info to /opt/local/lib/perl5/5.8.9/darwin-2level/perllocal.pod My question is, what am I doing wrong and how can I either 1) Get Apache to look in the right directory where the DBD & DBI modules are installed or 2) Update the way I'm installing the module to install them into one of the search directories. I honestly don't know what option makes more sense and could use guidance on that as well. As you can probably tell I'm pretty lost at the moment. Please help!!! Thanks in advance.

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• Hundreds of unknown entries in Linux logwatch

  - by Saif Bechan

  I have a dedicated server which runs centos. Today i got an email from loginwatch on my server with hundreds of lines of 'errors'. I don't really know what they are becasue i am fairly new at this. The lines are in a few sections, I will display the first 10 of all of them, i hope someone can help me fix these problems. --------------------- Named Begin ------------------------ **Unmatched Entries** client 216.146.46.136 notify question section contains no SOA: 8 Time(s) client 92.114.98.10 query (cache) 'adobe.com/A/IN' denied: 4 Time(s) network unreachable resolving '11.254.75.75.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:13c7:7002:3000::11#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:13::c7d4:35#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:2e::1#53: 2 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::193#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::3#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:660:3006:1::1:1#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:6b0:7::2#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:1:0:4777::140#53: 1 Time(s) network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:2001:a:4608::59#53: 1 Time(s) network unreachable resolving '146.250.19.67.in-addr.arpa/PTR/IN': 2001:5a0:10::2#53: 1 Time(s) network unreachable resolving '149.207.106.87.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) network unreachable resolving '178.62.24.195.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s) this goes on for hundreds of lines with all different domain names. --------------------- pam_unix Begin ------------------------ Failed logins from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 111 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 113 times 121.14.145.32: 136 times 190.152.69.5: 248 times 209.160.72.15: 572 times 210.26.48.35: 2 times 212.235.111.224 (DSL212-235-111-224.bb.netvision.net.il): 140 times 218.206.25.29: 140 times Illegal users from: 78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 2665 times 93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 2539 times 121.14.145.32: 116 times 190.152.69.5: 34 times 209.160.72.15: 324 times 218.206.25.29: 8051 times proftpd: Unknown Entries: session opened for user cent_ftp by (uid=0): 15 Time(s) session closed for user cent_ftp: 14 Time(s) sshd: Authentication Failures: unknown (218.206.25.29): 8051 Time(s) unknown (78-86-126-211.zone2.bethere.co.uk): 2665 Time(s) unknown (93.97.176.136): 2539 Time(s) root (209.160.72.15): 558 Time(s) unknown (209.160.72.15): 324 Time(s) root (190.152.69.5): 246 Time(s) unknown (121.14.145.32): 116 Time(s) root (121.14.145.32): 106 Time(s) root (dsl212-235-111-224.bb.netvision.net.il): 70 Time(s) root (93.97.176.136): 44 Time(s) root (78-86-126-211.zone2.bethere.co.uk): 37 Time(s) unknown (190.152.69.5): 34 Time(s) mysql (121.14.145.32): 30 Time(s) nobody (218.206.25.29): 26 Time(s) mail (218.206.25.29): 24 Time(s) news (218.206.25.29): 24 Time(s) root (218.206.25.29): 24 Time(s) --------------------- SSHD Begin ------------------------ **Unmatched Entries** pam_succeed_if(sshd:auth): error retrieving information about user tavi : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pam : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user konchog : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user stavrum : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user rachel : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user affiliates : 24 time(s) pam_succeed_if(sshd:auth): error retrieving information about user nen : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cobra : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user pass : 7 time(s) pam_succeed_if(sshd:auth): error retrieving information about user hacer : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user chung : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user zainee : 1 time(s) pam_succeed_if(sshd:auth): error retrieving information about user radu : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user alka : 4 time(s) pam_succeed_if(sshd:auth): error retrieving information about user albert : 5 time(s) pam_succeed_if(sshd:auth): error retrieving information about user turcia : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user cordell : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user silver : 2 time(s) pam_succeed_if(sshd:auth): error retrieving information about user dragon : 3 time(s) If someone wants to see the whole log i can upload it somewhere. Am i being hacked, what is this all?? I hope someone can help me, this does not look good at all.

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• PHP Warning: PHP Startup: Unable to load dynamic library php_mysql.dll, Mac 10.6, Apache 2.2, php 5

  - by munchybunch

  I'm trying to use the PHP CLI, and when I enter something like php test.php in the command line it returns: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysql.dll' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysql.dll, 9): image not found in Unknown on line 0 something test.php contains: <?php echo 'something'; ?> I checked /usr/lib/php/extensions/no-debug-non-zts-20090626/, and as expected the .dll file isn't there. I'm a complete beginner when it comes to this - what is happening, and how can I fix it? A search of my system for "php_msyql.dll" reveals nothing. Does it have to do with how I compiled it? I don't have the original version of php that came with the mac, I think - I may have reinstalled it somewhere along the way. Any help would be appreciated!

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• PHP unable to load dynamic library... but it is loaded. WTF?

  - by Josh

  I have a CentOS 5.4 server with Apache 2.2.3, mod_fastcgi and PHP 5.2.11. Everything is working great, server is a production server and I've had no complaints. When I was looking in PHP's error log to diagnose a problem with a specific page, I saw the following periodically repeated over and over: [03-May-2010 19:54:12] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: undefined symbol: php_rfc1867_callback in Unknown on line 0 [03-May-2010 19:54:12] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/pdo_mysql.so' - /usr/lib/php/modules/pdo_mysql.so: undefined symbol: php_pdo_get_dbh_ce in Unknown on line 0 [03-May-2010 19:54:12] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: undefined symbol: php_rfc1867_callback in Unknown on line 0 [03-May-2010 19:54:12] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/pdo_mysql.so' - /usr/lib/php/modules/pdo_mysql.so: undefined symbol: php_pdo_get_dbh_ce in Unknown on line 0 I am very confused because APC is loaded, I can see it in the output of phpinfo(). And by the look of these error messages nothing should be working at all. Yet sites seem to be running fine. How can I track down the source of this error?

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• How do I fix "Library not loaded: libssl.1.0.0.dylib" with PostgreSQL?

  - by Simpleton

  After deleting Macports, I've had some strange behaviour. When I try to run PostgreSQL via CLI, I get: pawel:~ pawel$ psql dyld: Library not loaded: /opt/local/lib/libssl.1.0.0.dylib Referenced from: /usr/local/bin/psql Reason: image not found Trace/BPT trap This is strange because I've installed Postgresql through Homebrew and running brew list confirms that it's there. How would I get psql to work again? Additionally, trying to install the pg gem fails due to an file not found: /opt/local/lib/libssl.1.0.0.dylib error. I need to make Postgres not look in the /opt/local/ directory for this file.

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