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  • So Much Happening at Devoxx

    - by Tori Wieldt
    Devoxx, the premier Java conference in Europe, has been sold out for a while. The organizers (thanks Stephan and crew!) cap the attendance to make sure all attendees have a great experience, and that speaks volumes about their priorities. The speakers, hackathons, labs, and networking are all first class. The Oracle Technology Network will be there, and if you were smart/lucky enough to get a ticket, come find us and join the fun: IoT Hack Fest Build fun and creative Internet of Things (IoT) applications with Java Embedded, Raspberry Pi and Leap Motion on the University Days (Monday and Tuesday). Learn from top experts Yara & Vinicius Senger and Geert Bevin at two Raspberry Pi & Leap Motion hands-on labs and hacking sessions. Bring your computer. Training and equipment will be provided. Devoxx will also host an Internet of Things shop in the exhibition floor where attendees can purchase Arduino, Raspberry PI and Robot starter kits. Bring your IoT wish list! Video Interviews Yolande Poirier and I will be interviewing members of the Java Community in the back of the Expo hall on Wednesday and Thursday. Videos are posted on Parleys and YouTube/Java. We have a few slots left, so contact me (you can DM @Java) if you want to share your insights or cool new tip or trick with the rest of the developer community. (No commercials, no fluff. Keep it techie and keep it real.)  Oracle Keynote Wednesday morning Mark Reinhold, Chief Java Platform Architect, and Brian Goetz, Java Language Architect will provide an update on Java 8 and beyond. Oracle Booth Drop by the Oracle booth to see old and new friends.  We'll have Java in Action demos and the experts to explain them and answer your questions. We are raffling off Raspberry Pi's each day, so be sure to get your badged scanned. We'll have beer in the booth each evening. Look for @Java in her lab coat.  See you at Devoxx! 

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  • Zabbix Proxy not collecting data

    - by Jordan Eunson
    I have a working Zabbix 1.8.2 server collecting data for our office and our colo facility. However the link between the colo and office is flaky. What I'm trying to do is setup a proxy on the colo side to have a 1 hour cache and relay the data to our primary server at the office. Our zabbix server is compiled from source and uses a mysql database I've followed the instructions found in the zabbix documentation to compile the proxy using a sqlite3 database. I add the proxy to zabbix under Administration-DM-Proxies. The zabbix server "sees" the proxy because the "last seen" field is always under 60s. However when I assign a colo host to the proxy I stop receiving data from it. The colo host's zabbix_agentd.log file says this: 29343:20100622:124847 Timeout while answering request 29343:20100622:124847 Getting list of active checks failed. Will retry after 60 seconds The zabbix_proxy.log says this. 2041:20100622:123131.760 Deleted 0 records from history [0.000994 seconds] 2028:20100622:124131.671 Error while receiving answer from server [ZBX_TCP_READ() failed I also am unable to receive any SNMP data which is more important to me than the zabbix agent data. Has anyone had this problem before? Zabbix Server OS: CentOS5.4 Zabbix Server Build: 1.8.2 from source Zabbix Proxy OS: CentOS5.4 Zabbix Proxy Build: 1.8.2 from source P.S. The SQLite database on the zabbix proxy never gets any data written to it, it is identical to when I created it from the blank schema in zabbix-1.8.2/create/schema. (Yes I've checked the permissions)

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  • Xen HVM networking wont work

    - by Nathan
    I'm trying to get a Xen HVM network working using route however I am failing. Xen PV works fine using Ubuntu but when installing Ubuntu on HVM it fails to pick up the network. I'll let you know now that I'm not that experienced with Xen so I would appreciate any help. vm104 is the HVM thats causing me the problems, here is the configs that I believe should help resolve the problem. [root@eros vm104]# cat vm104.cfg import os, re arch = os.uname()[4] if re.search('64', arch): arch_libdir = 'lib64' else: arch_libdir = 'lib' kernel = '/usr/lib/xen/boot/hvmloader' builder = 'hvm' memory = 6000 shadow_memory = '8' cpu_weight = 256 name = 'vm104' vif = ['type=ioemu, ip=85.25.x.y, vifname=vifvm104.0, mac=00:16:3e:52:3d:fe, bridge=xenbr0'] acpi = 1 apic = 1 vnc = 1 vcpus = 4 vncdisplay = 3 vncviewer = 0 vncconsole = 1 vnclisten = '217.118.x.y' vncpasswd = 'kCfb5S4tE7' serial = 'pty' disk = ['phy:/dev/vpsvg/vm104_img,hda,w', 'file:/home/solusvm/xen/iso/Windows-Server-2008-RC2.iso,hdc:cdrom,r'] device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm' boot = 'cd' sdl = '0' usbdevice = 'tablet' pae=1 [root@eros /]# cat /etc/xen/xend-config.sxp | egrep -v "(^#.*|^$)" (xend-unix-server yes) (xend-unix-path /var/lib/xend/xend-socket) (xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$') (network-script network-route) (vif-script vif-route) (network-script 'network-route netdev=eth0') (dom0-min-mem 256) (dom0-cpus 0) (vnc-listen '0.0.0.0') (vncpasswd '') (keymap 'en-us') The Windows install will not pick up the network - I've tried setting the IP manually by using the Xen servers IP as the gateway and setting the main IP in Windows but no luck. If anyone needs any more information let me know and I appreciate any input!

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  • Howo to get Multipath IO with Dell MD3600i into active/active setup?

    - by Disco
    I'm desperately trying to improve performance of my SAN connection. Here's what i have: [root@xnode1 dell]# multipath -ll mpath1 (36d4ae520009bd7cc0000030e4fe8230b) dm-2 DELL,MD36xxi [size=5.5T][features=3 queue_if_no_path pg_init_retries 50][hwhandler=1 rdac][rw] \_ round-robin 0 [prio=200][active] \_ 18:0:0:0 sdb 8:16 [active][ready] \_ 19:0:0:0 sdd 8:48 [active][ghost] \_ 20:0:0:0 sdf 8:80 [active][ghost] \_ 21:0:0:0 sdh 8:112 [active][ready] And multipath.conf : defaults { udev_dir /dev polling_interval 5 prio_callout none rr_min_io 100 max_fds 8192 user_friendly_names yes path_grouping_policy multibus default_features "1 fail_if_no_path" } blacklist { device { vendor "*" product "Universal Xport" } } devices { device { vendor "DELL" product "MD36xxi" path_checker rdac path_selector "round-robin 0" hardware_handler "1 rdac" failback immediate features "2 pg_init_retries 50" no_path_retry 30 rr_min_io 100 prio_callout "/sbin/mpath_prio_rdac /dev/%n" } } And sessions. [root@xnode1 dell]# iscsiadm -m session tcp: [13] 10.0.51.220:3260,1 iqn.1984-05.com.dell:powervault.md3600i.6d4ae520009bd7cc000000004fd7507c tcp: [14] 10.0.50.221:3260,2 iqn.1984-05.com.dell:powervault.md3600i.6d4ae520009bd7cc000000004fd7507c tcp: [15] 10.0.51.221:3260,2 iqn.1984-05.com.dell:powervault.md3600i.6d4ae520009bd7cc000000004fd7507c tcp: [16] 10.0.50.220:3260,1 iqn.1984-05.com.dell:powervault.md3600i.6d4ae520009bd7cc000000004fd7507c I'm getting very poor read performance : dd if=/dev/mapper/mpath1 of=/dev/null bs=1M count=1000 The SAN is configured as follows: CTRL0,PORT0 : 10.0.50.220 CTRL0,PORT1 : 10.0.50.221 CTRL1,PORT0 : 10.0.51.220 CTRL1,PORT1 : 10.0.51.221 And on the host : IF0 : 10.0.50.1 IF1 : 10.0.51.1 (Dual 10GbE Ethernet Card Intel DA2) It's connected to a 10gbE switch dedicated for SAN traffic. My questions being; why the connection is set up as 'ghost' and not 'ready' like an active/active configuration ?

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  • Setting up Windows SBS 2008 network on Xen

    - by samyboy
    I'm trying to install a Windows SBS 2008 server in a Xen environment. The OS is booting fine. Unfortunately I can't figure out how to set up the network settings. Dom0 is a Debian Lenny hosting around 10 virtual servers. Here are the settings I'm using in the hosted Windows SBS: IP address: 10.20.0.8 Network mask: 255.255.0.0 Gateway: 10.20.0.1 Note that during the installation stage, Windows set the net mask at 255.255.255.0 without letting me choose. Gross. Windows SBS tells me I have a "limited connection". I can't ping the gateway nor any other IP except localhost and it's own IP (10.20.0.8). Here is the Xen config file: kernel = '/usr/lib/xen-3.2-1/boot/hvmloader' builder = 'hvm' memory = '4096' device_model='/usr/lib/xen-3.2-1/bin/qemu-dm' acpi=1 apic=1 pae=1 vcpus=1 name = 'winexchange' # Disks disk = [ 'phy:/dev/wnghosts/exchange-disk,ioemu:hda,w', 'file:/mnt/freespace/ISO/DVD1_Installation.iso,ioemu:hdc:cdrom,r' ] # Networking vif = [ 'mac=00:16:3E:0A:D0:1B, type=ioemu, bridge=xenbr0'] # video stdvga=0 serial='pty' ne2000=0 # Behaviour boot='c' sdl=0 # VNC vfb = [ 'type=vnc' ] vnc=1 vncdisplay=1 vncunused=1 usbdevice='tablet' This config is working with others Windows XP domU's. I tried to change the ne2000 values with 0 and 1 with no effect. I am far from having good Windows administration skills so I guess I definitely need some help on this case. Thanks.

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  • Zabbix Proxy not collecting data

    - by syntaxcollector
    Hi All I have a working Zabbix 1.8.2 server collecting data for our office and our colo facility. However the link between the colo and office is flaky. What I'm trying to do is setup a proxy on the colo side to have a 1 hour cache and relay the data to our primary server at the office. Our zabbix server is compiled from source and uses a mysql database I've followed the instructions found in the zabbix documentation to compile the proxy using a sqlite3 database. I add the proxy to zabbix under Administration-DM-Proxies. The zabbix server "sees" the proxy because the "last seen" field is always under 60s. However when I assign a colo host to the proxy I stop receiving data from it. The colo host's zabbix_agentd.log file says this: 29343:20100622:124847 Timeout while answering request 29343:20100622:124847 Getting list of active checks failed. Will retry after 60 seconds The zabbix_proxy.log says this. 2041:20100622:123131.760 Deleted 0 records from history [0.000994 seconds] 2028:20100622:124131.671 Error while receiving answer from server [ZBX_TCP_READ() failed I also am unable to receive any SNMP data which is more important to me than the zabbix agent data. Has anyone had this problem before? Zabbix Server OS: CentOS5.4 Zabbix Server Build: 1.8.2 from source Zabbix Proxy OS: CentOS5.4 Zabbix Proxy Build: 1.8.2 from source P.S. The SQLite database on the zabbix proxy never gets any data written to it, it is identical to when I created it from the blank schema in zabbix-1.8.2/create/schema. (Yes I've checked the permissions)

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  • "The directory name is invalid" when trying to install drivers in Windows 7 via Device Manager

    - by Luke
    First off, this computer is not mine, it's a customer's system. Having said that... The hard drive was moved to a new motherboard, CPU, RAM combo, and booted up fine. Customer puts in driver CD, drivers won't load. He brings it into me. Under Device Manager for Windows 7 x64, I see lots of PCI to PCI bridge, one SMBus Controller, and about 20 Unknown Devices. Greeeeeat... So I start with the SMBus driver directly from the Asus website for the motherboard (P8H77-M Pro). If I install from the setup program, it tells me to reboot, then it starts the install. It gets half way through the setup, then fails (An unknown error occurred. Setup will exit). When I try to point to the folder from Device Manager, it starts copying files for the driver, even presents me with the proper name of the device, but says that an error has occurred there as well: The directory name is invalid. Doing some Googling, I saw that many people had this issue with Vista. K, Vista and 7 are similar, maybe the solutions are the same... But they aren't. I tried: Copying the entire driver folder and setup utility to the Program Files folder and running it / selecting it in DM Downloading another set of drivers in case this one is corrupt Disabling UAC Deleting and recreating the %WINDIR%\TEMP folder Removing all references to previous hardware that I could find, even in Device Manager's hidden mode So far, nothing has worked. A wipe and reload will be out of the question

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  • Diagnosing SAN connectivity issues (RHEL5)

    - by Matthew
    We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, and are instead exporting the GFS2 filesystem via NFS from the first one (the software requires some weird locking mechanics that GFS2 doesn't support). As of this morning, NFS was no longer able to read/write to the volume from any of the servers, including the NFS server. I then tried checking the normal mount (the directory that is exported on the NFS server) and I received a weird input/output error just trying to CD into it. When I tried running multipath, I got a DM error, however multipath -l worked just fine. I tried unmounting the GFS2 volume, and the CLI hung. I ran init 0 which killed most services, but then the shutdown appeared to have been hung. I logged in via out of band access (hp ILO) and saw that the shutdown was hung trying to unmount GFS2 volumes. My main priority was getting the box back online so after about 5 minutes of waiting I did a hard reset. I am now trying to figure out what went wrong. What are the correct logs to investigate? I've never run into SAN issues like this before. The SAN is connected via 2 fibre connections. Any help would really be appreciated. Everything appears to be up and functional now.

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  • Deciphering an IIS6 Httperr log file

    - by smackaysmith
    We have a Windows 2003 R2 SP2 server with iis6 that is creating a 1024kb httperr file every minute. I can't figure out what I'm looking at. Here's a snippet: 2010-03-24 13:15:05 10.53.2.35 1667 10.53.2.12 80 HTTP/1.1 PUT /hserver.dll?&V01|&IMAC=0080646077AB|CID=32|CN=LWT0080646077AB|ED=1|IP=10.53.2.35|SM=255.255.255.0|GW=10.53.2.1|SN=10.53.2.255|DM=logs.com|1D=10.53.2.12|2D=10.101.2.12|0D=1|AL=/usr/sbin/netxserv|AV=4.1.0.0|CP=VIAüEstherüprocessorüü800MHz|CPS=800|RM=190512|B1=1.18|PD2=1024x768x16ü@ü60Hz|IM=6.6.2-02|CI=3600|SN#=6KHDG301300|OS=23|VI=1|P1=24|TZO=-301|TZ=CDT|FS=128|MD=2003-04|CO=|LO=|AP0=BaseüSystem|NA|6.6.2-02|AP1=RapportüAgent|NA|4.1.0-3.26|AP2=TrueType|NA|6.8.0-3.4|AP3=WebFonts|NA|2.0.4-3.6|AP4=TrueTypeüFonts|NA|6.8.0-3.5|AP5=Network_login|NA|1.0.0-1.0.3|AP6=ScreenüSaver|NA|3.13|AP7=DMonitor|NA|1.0.0-0.4.0|AP8=MozillaüFirefox_15|NA|1.5.0.8-3.6|AP9=RemoteüShadow|NA|3.17|AP10=RemoteüDesktop|NA|1.6.0-1.0|AP11=SNMP|NA|5.1.3.1-3.13|AP12=LinuxüPrinting|NA|3.8.27-3.33|AP13=SSH|NA|3.8.1-3.25|AP14=ThinPrint|NA|6.2.87-0.2|AP15=XDMCP|NA|6.8.0-3.29|AP16=Ericom|NA|8.2.0-3.29|AP17=Daylightüsavingütimeüupdate|NA|1.1.0-1.0.0| 411 - LengthRequired - What on earth am I looking at? Nothing in the system or app logs. Finally, in iis manager, Default Web Site label has boxes instead of spaces. Very odd.

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  • Ubuntu lucid, maverick high iowait

    - by netom
    I'm using Ubuntu, and I've got the same problem with Lucid and Maverick. From time to time, especially a few minutes after boot, the iowait goes between 50-100% and the box is unusable. Everything that tries to access the disk freezes. I have the following setup: Hard disk: Model Family: Western Digital Caviar Green family Device Model: WDC WD15EADS-00P8B0 Serial Number: WD-WMAVU0391287 Firmware Version: 01.00A01 User Capacity: 1.500.301.910.016 bytes I have a quad core Intel Core2 Q6600 processor, and 4G of memory. When the high iowait occurs, usually 4 processes are active: kdmflush (two procs) jbd2/dm-0-8 jbd2/db-1-8 and a few more starving user processes of course. I know this from top and iotop. Any suggestions about why this is happening? There are a lot of q/a-s about linux and high iowait, but none of them helped so far, I even tweaked the hard disk not to park the head in every 8 seconds (Load cycle count is 50334!!!!! :o ), but nothing. Problem persists. Thank you in advance.

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  • gpg symmetric encryption using pipes

    - by Thomas
    I'm trying to generate keys to lock my drive (using DM-Crypt with LUKS) by pulling data from /dev/random and then encrypting that using GPG. In the guide I'm using, it suggests using the following command: dd if=/dev/random count=1 | gpg --symmetric -a >./[drive]_key.gpg If you do it without a pipe, and feed it a file, it will pop up an (n?)curses prompt for you to type in a password. However when I pipe in the data, it repeats the following message four times and sits there frozen: pinentry-curses: no LC_CTYPE known assuming UTF-8 It also says can't connect to '/root/.gnupg/S.gpg-agent': File or directory doesn't exist, however I am assuming that this doesn't have anything to do with it, since it shows up even when the input is from a file. So I guess my question boils down to this: is there a way to force gpg to accept the passphrase from the command line, or in some other way get this to work, or will I have to write the data from /dev/random to a temporary file, and then encrypt that file? (Which as far as I know should be alright due to the fact that I'm doing this on the LiveCD and haven't yet created the swap, so there should be no way for it to be written to disk.)

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  • How to get multipath working for Ubuntu Server 12.04

    - by mlampi
    I'm working on a project which aims to make use of Ubuntu servers running on enterprise class hardware. In our case that means IBM HS23E blade servers, QLogic 4GB fibre channel extension cards and quite old IBM DS4500 disk array with two controllers. At the moment we have fibre channel as only boot option and Ubuntu Server 12.04 installed just fine and is able to boot without multipath. I'm not a linux professional myself but in our team we have people who will understand the technical stuff. Don't let my post confuse :) The current situation is that we have only one fibre channel connection to a single disk array controller. Real life case would be of course quite different. At minimum we should have two fibre channel ports connected to two different switches and two different controllers. However, we have no idea how to set up multipath tool. Is the DM-MPIO the right software? At minimum we should be able to boot when multiple connections are available and achieve fault tolerance when any of them should be down. Since the disk array is not the latest hardware, I managed to find RDAC driver sources only for 2.6.x kernel. And we have 3.2.x. Another issue is to build a multipath.conf. The said driver sources are from IBM support and the QLogic drivers provided to Ubuntu installer are from Ubuntu site. It seems that RHEL and SLES would have near out of the box support but that is not an option for our project. Actual questions: - What is the recommended software tool for multipath for Ubuntu Server 12.04? - Is there available pre-made configurations or templates? Does it require disk array / controller specific settings or do a more generic config work? - Do you have expriences on similar setup and like to share the knowledge? I'll provide you with any additional information you might require. Thanks in advance.

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  • Xen Windows Guest spawn doesn't spawn a vnc display

    - by Henrik P. Hessel
    I'm using this HVM File to create a new guest kernel = "/usr/lib/xen-3.2-1/boot/hvmloader" builder='hvm' memory = 4096 # Should be at least 2KB per MB of domain memory, plus a few MB per vcpu. shadow_memory = 64 name = "hessel-windows2008" vif = [ 'ip=188.40.xx.xx,mac=00:16:3E:C1:8F:CE' ] acpi = 1 apic = 1 disk = [ 'file:/home/xen/disks/hessel/win2008/win2008.img,hda,w', 'file:/home/xen/isopool/win2008_32.iso,hdc:cdrom,r' ] device_model = '/usr/lib/xen/bin/qemu-dm' #----------------------------------------------------------------------------- # boot on floppy (a), hard disk (c) or CD-ROM (d) # default: hard disk, cd-rom, floppy boot="dc" sdl=0 vnc=1 vncdisplay=1 vnclisten="0.0.0.0" vncconsole=1 vncpasswd='howtoforge' stdvga=0 serial='pty' usbdevice='tablet' The guest is created without an error. But no vnc display is created. Any ideas, how to fix that? prometheus:~# netstat -ant Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:615 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN tcp 0 232 188.40.xx.xx:8080 195.36.75.26:54032 ESTABLISHED tcp 0 0 188.40.xx.xx:8080 195.36.75.26:53085 ESTABLISHED tcp6 0 0 :::8080 :::* LISTEN tcp6 0 0 :::53 :::* LISTEN tcp6 0 0 :::22 :::* LISTEN tcp6 0 0 ::1:6010 :::* LISTEN

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  • What is the difference between the Linux and Linux LVM partition type?

    - by ujjain
    Fdisk shows multiple partition types. What is the difference between choosing 83) Linux and 8e) Linux LVM? Choosing 83) Linux also works fine for using LVM, even creating a physical volume on /dev/sdb without a partition table works. Does picking a partition type in fdisk really matter? What is the difference in picking Linux or Linux LVM as partition type? [root@tst-01 ~]# fdisk /dev/sdb WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): l 0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT- 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT- 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT- 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx 5 Extended 42 SFS 86 NTFS volume set da Non-FS data 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / . 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/ 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT 1e Hidden W95 FAT1 Command (m for help):

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  • Setting up Windows network on Xen

    - by samyboy
    I'm trying to install a Windows XP server in a Xen environment. The OS is booting fine. Unfortunately I can't figure out how to set up the network settings. Dom0 is a Debian Lenny currently hosting around 10 Linux virtual servers. Windows tells me I have a "limited connection". It can't get any DHCP response, nor access other hosts in the network Here is the Xen's client config file: kernel = '/usr/lib/xen-3.2-1/boot/hvmloader' builder = 'hvm' memory = '1024' device_model='/usr/lib/xen-3.2-1/bin/qemu-dm' acpi=1 apic=1 pae=1 vcpus=1 name = 'winexchange' # Disks disk = [ 'phy:/dev/wnghosts/exchange-disk,ioemu:hda,w', 'file:/mnt/freespace/ISO/DVD1_Installation.iso,ioemu:hdc:cdrom,r' ] # Networking vif = [ 'mac=00:16:3E:0A:D0:1B, type=ioemu, bridge=xenbr0'] # video stdvga=0 serial='pty' ne2000=0 # Behaviour boot='c' sdl=0 # VNC vfb = [ 'type=vnc' ] vnc=1 vncdisplay=1 vncunused=1 usbdevice='tablet' Server config (/etc/xen/xend-config.sxp) (network-script network-bridge) (network-script network-dummy) (vif-script vif-bridge) (dom0-min-mem 512) (dom0-cpus 0) (vnc-listen '0.0.0.0') Since I use Debian I had to create a link like this: /etc/xen/qemu-ifup - /etc/xen/scripts/qemu-ifup What did I do wrong? Please tell me if you want some more info (logs, etc)

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  • SELinux - Allow multiple services access to same /home/dir

    - by Mike Purcell
    I currently have SELinux enabled and have been able to configure apache to allow access to /home/src/web with a chcon command granting the 'httpd_sys_content_t' type. But now I am trying to serve the rsyslogd.conf file from the same directory, but every time I start rsyslogd I see an entry in my audit log saying that rsyslogd was denied access. My question is, is it possible to grant two applications the ability to access the same directory, while still keeping SELinux enabled? Current perms on /home/src: drwxr-xr-x. src src unconfined_u:object_r:httpd_sys_content_t:s0 src Audit log message: type=AVC msg=audit(1349113476.272:1154): avc: denied { search } for pid=9975 comm="rsyslogd" name="/" dev=dm-2 ino=2 scontext=unconfined_u:system_r:syslogd_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir type=SYSCALL msg=audit(1349113476.272:1154): arch=c000003e syscall=2 success=no exit=-13 a0=7f9ef0c027f5 a1=0 a2=1b6 a3=0 items=0 ppid=9974 pid=9975 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=30 comm="rsyslogd" exe="/sbin/rsyslogd" subj=unconfined_u:system_r:syslogd_t:s0 key=(null) -- Edit -- Came across this post, which is sort of what I am trying to accomplish. However when I viewed the list of allowed sebool params, the only relating to syslog was: syslogd_disable_trans (SELinux Service Protection), seems like I can maintain the current SELinux 'type' on the /home/src/ dir, but set the bool on syslogd_disable_trans to false. I wonder if there is a better approach?

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  • How can I automatically edit an email before auto-forwarding it?

    - by Miss Cellanie
    Is there a way to automatically edit emails before forwarding them? I'm getting email notifications from Foursquare that I want to send to my phone as text messages. I know how to send messages to my number using an email address (I'm in the US and use Verizon) but I don't know how to strip out any unnecessary formatting, like HTML, before the email gets sent. What I want: Ability to strip out HTML Ability to start forwarding at a specific part of the email based on a search (e.g., I might know that Foursquare starts their messages with "Hey hey!" and only want content after that phrase occurs) Ability to truncate at 160 characters Things I've tried: I'm not using Foursquare DM pings through Twitter because I have two Twitter accounts and Twitter only allows a phone to be linked to one account at a time. I'm not willing to change which account it's linked to. I tried to work around the Twitter limitation using Google Voice, but they don't support SMS short codes. I'll compromise on the features I want if I can find a free solution that doesn't require me to set up my own server. I do think this is computer related because it will happen on my computer, not on my phone. edit My current setup: Gmail in Firefox 3.0.15 on Windows XP. I use a netbook as my only personal computer. However, if the only way to accomplish this well is to set up my own mail server or something, I would still want to know that.

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  • What is a good replacement for StumbleUpon's Share feature?

    - by Mofoo
    I've been using Firefox + StumbleUpon's Share feature with my friends for years now. It is a perfect way of sharing links directly with your friends. You first need to be Following each other and then on the SU toolbar, you can "Share" with your list of friends. You can even include a personal message. The friend will receive a notification with # of pending shares in their toolbar (bold & red). They click the stumble button and it will navigate to the site plus show a yellow bar with your message. I literally use it daily. But then Chrome came along and beat the tar out of Firefox (and other browsers) in terms of usability and performance. But it doesn't (and never will according to Google) allow toolbars. StumbleUpon's solution in Chrome is a fake toolbar (html) that gets injected into the page you're viewing. It's buggy and performance is low. Overall it's not an acceptable solution. I'm looking for a replacement with something that is just as easy to send/receive links. I was thinking of Twitter DM's and using a bookmarklet, but I wanted to survey the collective for other options Thanks in advance for your input!

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  • Converting an Oracle VM VirtualBox VM into an Oracle VM Server image

    - by wim.coekaerts
    As we are working on tighter seemless moving of VM's between the 2 products, here are a few simple steps to convert an existing Oracle VM VirtualBox image over. Steps involved to make it easy/straightforward : (1) When creating a VM in Virtualbox, using Oracle Linux as an example, make sure that /etc/fstab only uses labels. Do not use hardcoded device names. instead of an entry /dev/sda1 /u01 ext3 defaults 1 1 use LABEL=foo /u01 ext3 defaults 1 1 for more info on labels : man e2label or use a logical volume /dev/VolGroup00/LVfoo /u01 ext3 defaults 1 1 Doing so will make it easier to have an OS boot up on a different hypervisor with potentially different device names. For instance, the VirtualBox VM might expose a scsi driver while in Oracle VM Server you might end up with an ide disk, this then changes /dev/sda to /dev/hda. (2) If you have a VM created that you want to convert, then shut down the VM in VirtualBox and convert the image files : go the the directory that contains your HardDisk image files (.VirtualBox/HardDisks/* as an example) for each of the virtual disks run the following command : VBoxManage clonehd virtualdiskfilename.vdi system.img --format raw where virtualdiskfilename.vdi is the original VBox VM file (this can also be a vmdk file) and system.img is the name of the virtualdisk for Oracle VM. this can be any filename as well, I typically use system.img to specify the boot disk (as is common for Oracle VM template creation) (3) create a vm.cfg To run a VM converted from VirtualBox, you have to create a vm.cfg for Oracle VM server that creates an HVM guest. The easiest is to use a simple hvm vm.cfg and change it for your vm. I have an example here : acpi = 1 apic = 1 builder = 'hvm' device_model = '/usr/lib/xen/bin/qemu-dm' disk = ['file:system.img,hda,w', 'file:oracle.img,hdb,w',',hdc:cdrom,r',] kernel = '/usr/lib/xen/boot/hvmloader' memory = '1024' name = 'vmname' on_crash = 'restart' on_reboot = 'restart' pae = 1 serial = 'pty' timer_mode = '0' usbdevice = 'tablet' vcpus = 1 vif = ['bridge=xenbr0,type=ioemu'] vif_other_config = [] vnc = 1 vncconsole = 1 vnclisten = '0.0.0.0' vncpasswd = '' vncunused = 1 If you take the above vm.cfg, all you need to do - modify disk = (add your virtual disks in there) - modify memory = (amount of memory your VM needs) - modify name = (enter a name for your VM here) - modify vif = (might want to replace bridge=xenbr0 to the bridge you want to use) if you want more than 1 vcpu or other changes of course you have to make those as well. (4) copy this set of files onto your Oracle VM server or onto a webserver in a subdirectory and import the template through Oracle VM Manager. You can also just start the vm using xm create vm.cfg if you like. And that's it. As I said, we are working on automation around all this but it is relatively trivial to convert VM's over as long as you take the basic issues into account. Primarily the set up of the filesystems and the use of labels in /etc/fstab. There are other potential things to look at, such as network config. If you want to make that part clean then prior to shutting down the VM change /etc/modprobe.conf and/or add the mac address of the VM into the vm.cfg in the vifs line. The good thing, at least with Linux, is that even tho the virtual hardware changes, Linux will deal with it just fine (e1000 vs 8139 realtek, ide vs scsi etc). hope this helps.

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  • Converting a PV vm back into an HVM vm

    - by wim.coekaerts
    I have been doing some Oracle VM benchmark stuff in the last week or 2 in my off hours and yesterday I wanted to convert one of my VMs that was based on a paravirt kernel into a vm that just boots as a regular hardware virt VM with a standard x86-64 kernel. It took me a little while to figure out the fastest way so now that I have it pretty much down I wanted to share the steps. A PV kernel uses pygrub and a paravirt kernel image that lives on the vm image virtual disk. since this disk image does not have to be bootable it doesn't contain a boot sector and if you just restart the VM in hvm mode the virtual bios will just not do much as it can't start the boot process from disk The first thing I do is make a backup of my vm.cfg file :-) and then edit it as follows : the original file contains : bootloader = '/usr/bin/pygrub' I replace that with : acpi = 1 apic = 1 builder = 'hvm' device_model = '/usr/lib/xen/bin/qemu-dm' kernel = '/usr/lib/xen/boot/hvmloader' then changing the disk files. I change my xvd disks to hd disks and I copy over the iso image of my instal lDVD. In the case of my VM template it was based on OL5U4 So I downloaded Enterprise-R5-U4-Server-x86_64-dvd.iso and added it as a cd device. disk = ['file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/System.img,xvda,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Oracle11202RAC_x86_64-xvdb.img,xvdb,w', ] to disk = ['file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/System.img,hda,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Oracle11202RAC_x86_64-xvdb.img,hdb,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Enterprise-R5-U4-Server-x86_64-dvd.iso, hdc:cdrom,r', ] boot='d' for the network devices (vifs) I change : vif = ['bridge=xenbr2,type=netfront'] to vif = ['bridge=xenbr2,type=ioemu'] That should do it. Next, inside the VM, I copy over the regular kernel rpm that I want to end up running in hvm mode. In this example case it was : kernel-2.6.18-164.0.0.0.1.el5.x8664.rpm. I will use that later on in the process. I put this kernel simply in /root At this point I just start the vm with xm create vm.cfg and start my vnc console to the vm console. Oracle Linux will boot from the iso image, I just go through the install steps and click on UPgrade existing (not re-install). Because the VM is the same as the ISO the install won't actually do anything and it will run through instantly. When the "Reboot" button pops up, don't reboot. Switch to the command prompt console. hi alt-f2 to go to the shell prompt. Now it's easy : umount /mnt/sysimage/boot cd /mnt/sysimage chroot . mount /dev/hda1 (if that was your /boot partition) export PATH=/sbin:$PATH (just to clean that up) edit /etc/modprobe.conf and comment out the xen modules (just put a # in front) Install grub. if your /boot is hda1 then that is (hd0,0) $ grub root (hd0,0) setup (hd0) exit grub now you have a good bootsector, grub installed and you have your grub.conf file Install the new kernel cd root (this is your old /root in your pv image) rpm -ivh remove (or comment out) boot='d' in your vm.cfg restart the VM and you should be good to go, regular grub should start and load your environment. Caveats : this assumes you used labels for your filesystems. if /etc/fstab were to have devices listed then you would have to rename these device before rebooting as well. If you had a /dev/xvda disk then this would be /dev/hda or /dev/sda. All in all it is a relatively short and simple process.

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  • Converting a PV vm back into an HVM vm

    - by wim.coekaerts
    I have been doing some Oracle VM benchmark stuff in the last week or 2 in my off hours and yesterday I wanted to convert one of my VMs that was based on a paravirt kernel into a vm that just boots as a regular hardware virt VM with a standard x86-64 kernel. It took me a little while to figure out the fastest way so now that I have it pretty much down I wanted to share the steps. A PV kernel uses pygrub and a paravirt kernel image that lives on the vm image virtual disk. since this disk image does not have to be bootable it doesn't contain a boot sector and if you just restart the VM in hvm mode the virtual bios will just not do much as it can't start the boot process from disk The first thing I do is make a backup of my vm.cfg file :-) and then edit it as follows : the original file contains : bootloader = '/usr/bin/pygrub' I replace that with : acpi = 1 apic = 1 builder = 'hvm' device_model = '/usr/lib/xen/bin/qemu-dm' kernel = '/usr/lib/xen/boot/hvmloader' then changing the disk files. I change my xvd disks to hd disks and I copy over the iso image of my instal lDVD. In the case of my VM template it was based on OL5U4 So I downloaded Enterprise-R5-U4-Server-x86_64-dvd.iso and added it as a cd device. disk = ['file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/System.img,xvda,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Oracle11202RAC_x86_64-xvdb.img,xvdb,w', ] to disk = ['file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/System.img,hda,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Oracle11202RAC_x86_64-xvdb.img,hdb,w', 'file:/ovs/OVM_EL5U4_X86_64_11202RAC_PVM/Enterprise-R5-U4-Server-x86_64-dvd.iso, hdc:cdrom,r', ] boot='d' for the network devices (vifs) I change : vif = ['bridge=xenbr2,type=netfront'] to vif = ['bridge=xenbr2,type=ioemu'] That should do it. Next, inside the VM, I copy over the regular kernel rpm that I want to end up running in hvm mode. In this example case it was : kernel-2.6.18-164.0.0.0.1.el5.x8664.rpm. I will use that later on in the process. I put this kernel simply in /root At this point I just start the vm with xm create vm.cfg and start my vnc console to the vm console. Oracle Linux will boot from the iso image, I just go through the install steps and click on UPgrade existing (not re-install). Because the VM is the same as the ISO the install won't actually do anything and it will run through instantly. When the "Reboot" button pops up, don't reboot. Switch to the command prompt console. hi alt-f2 to go to the shell prompt. Now it's easy : umount /mnt/sysimage/boot cd /mnt/sysimage chroot . mount /dev/hda1 (if that was your /boot partition) export PATH=/sbin:$PATH (just to clean that up) edit /etc/modprobe.conf and comment out the xen modules (just put a # in front) Install grub. if your /boot is hda1 then that is (hd0,0) $ grub root (hd0,0) setup (hd0) exit grub now you have a good bootsector, grub installed and you have your grub.conf file Install the new kernel cd root (this is your old /root in your pv image) rpm -ivh remove (or comment out) boot='d' in your vm.cfg restart the VM and you should be good to go, regular grub should start and load your environment. Caveats : this assumes you used labels for your filesystems. if /etc/fstab were to have devices listed then you would have to rename these device before rebooting as well. If you had a /dev/xvda disk then this would be /dev/hda or /dev/sda. All in all it is a relatively short and simple process.

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  • M2Crypto doesn't install in venv, or swig doesn't define __x86_64__ which breaks compiling against OpenSSL

    - by Lorin Hochstein
    I'm trying to install the Python M2Crypto package into a virtualenv on an x86_64 RHEL 6.1 machine. This process invokes swig, which fails with the following error: $ virtualenv -q --no-site-packages venv $ pip install -E venv M2Crypto==0.20.2 Downloading/unpacking M2Crypto==0.20.2 Downloading M2Crypto-0.20.2.tar.gz (412Kb): 412Kb downloaded Running setup.py egg_info for package M2Crypto Installing collected packages: M2Crypto Running setup.py install for M2Crypto building 'M2Crypto.__m2crypto' extension swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i /usr/include/openssl/opensslconf.h:31: Error: CPP #error ""This openssl-devel package does not work your architecture?"". Use the -cpperraswarn option to continue swig processing. error: command 'swig' failed with exit status 1 Complete output from command /home/lorin/venv/bin/python -c "import setuptools;__file__='/home/lorin/venv/build/M2Crypto/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-BFiNtU-record/install-record.txt --install-headers /home/lorin/venv/include/site/python2.6: I've got OpenSSL 1.0.0 installed via RPM packages from RedHat. The part of /usr/include/openssl/opensslconf.h that causes the error looks like this: #if defined(__i386__) #include "opensslconf-i386.h" #elif defined(__ia64__) #include "opensslconf-ia64.h" #elif defined(__powerpc64__) #include "opensslconf-ppc64.h" #elif defined(__powerpc__) #include "opensslconf-ppc.h" #elif defined(__s390x__) #include "opensslconf-s390x.h" #elif defined(__s390__) #include "opensslconf-s390.h" #elif defined(__sparc__) && defined(__arch64__) #include "opensslconf-sparc64.h" #elif defined(__sparc__) #include "opensslconf-sparc.h" #elif defined(__x86_64__) #include "opensslconf-x86_64.h" #else #error "This openssl-devel package does not work your architecture?" #endif gcc has the right variable defined: $ echo | gcc -E -dM - | grep x86_64 #define __x86_64 1 #define __x86_64__ 1 But apparenty swig doesn't, since this is the line that's failing: swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o \ SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i Is there a way to fix this by changing something in my system configuration? M2Crypto gets installed in a virtualenv as part of a larger script I don't control, so avoiding mucking around with the M2Crypto files would be a good thing.

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  • Big sinatra problems

    - by Joel M.
    Hi, So I'm having huge trouble with sinatra. Here's what I have: require 'dm-core' DataMapper.setup(:default, ENV['DATABASE_URL'] || 'sqlite3://my.db') class Something include DataMapper::Resource property :id, Serial property :thing, Text property :run_in, Integer property :added_at, DateTime property :to, String def schedule cronify(self.thing+" to "+self.to, "http://url"+self.id.to_s, self.run_in) end def notify text(self.thing, self.to) end end Something.auto_upgrade! The cronify method works. I tested it in irb. Also, the schedule instance method works, I tested it in the console. However, it doesn't work in the route, even though it works in the console. post '/add' do @something = Something.create(blah) #this works fine @something.schedule #this works fine in the console; not in the route. end I've tried everything, from @something.create(blah).schedule (which also works fine in the console, but not in the route), to defining the method cronify inside the sinatra helpers, and even calling cronify directly on the route. Nothing works on the route. What am I doing wrong?

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  • boost::binding that which is already bound

    - by PaulH
    I have a Visual Studio 2008 C++ application that does something like this: template< typename Fcn > inline void Bar( Fcn fcn ) // line 84 { fcn(); }; template< typename Fcn > inline void Foo( Fcn fcn ) { // this works fine Bar( fcn ); // this fails to compile boost::bind( Bar, fcn )(); }; void main() { SYSTEM_POWER_STATUS_EX status = { 0 }; Foo( boost::bind( ::GetSystemPowerStatusEx, &status, true ) ); // line 160 } *The call to GetSystemPowerStatusEx() is just for demonstration. Insert your favorite call there and the behavior is the same. When I go to compile this, I get 84 errors. I won't post them all unless asked, but they start with this: 1>.\MyApp.cpp(99) : error C2896: 'boost::_bi::bind_t<_bi::dm_result<MT::* ,A1>::type,boost::_mfi::dm<M,T>,_bi::list_av_1<A1>::type> boost::bind(M T::* ,A1)' : cannot use function template 'void Bar(Fcn)' as a function argument 1> .\MyApp.cpp(84) : see declaration of 'Bar' 1> .\MyApp.cpp(160) : see reference to function template instantiation 'void Foo<boost::_bi::bind_t<R,F,L>>(Fcn)' being compiled 1> with 1> [ 1> R=BOOL, 1> F=BOOL (__cdecl *)(PSYSTEM_POWER_STATUS_EX,BOOL), 1> L=boost::_bi::list2<boost::_bi::value<_SYSTEM_POWER_STATUS_EX *>,boost::_bi::value<bool>>, 1> Fcn=boost::_bi::bind_t<BOOL,BOOL (__cdecl *)(PSYSTEM_POWER_STATUS_EX,BOOL),boost::_bi::list2<boost::_bi::value<_SYSTEM_POWER_STATUS_EX *>,boost::_bi::value<bool>>> 1> ] If anybody can point out what I may be doing wrong, I would appreciate it. Thanks, PaulH

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  • Trouble understanding the whole OSGi web eco system

    - by Jens
    Hello, I am pretty new to the whole Java and OSGi world and I have trouble understanding the eco system of a OSGi web application. To be more precise I am at the moment trying to understand how all the parts of the eco system are related to each other: OSGi Framework (e.g. Apache Felix, Equinox, Knoplerfish) OSGi Runtime (e.g. Spring DM Server, Pax Runner, Apache Karaf) Web Extender (e.g. Pax Web Extender, Spring Web Extender) Web Container (e.g. Apache Tomcat, Jetty) To give you a visual representation of my actual understanding of their relationship check out this image: As far as I know the OSGi Framework is a implementation of the OSGi specification. The runtime is a distribution which adds additional functionality on top of the OSGi specification like logging for instance. Since there seem to be some differences in the classpath mechanism of OSGi and web containers like Tomcat you need some kind of translator. This part is handled by the "Web Extender". Would you please clarify this whole thing for me? Am I understanding everything correct?

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