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• ip-up does not trigger when using built-in cisco vpn on mac osx lion

  - by Yasser Sobhdel

  I am using Cisco VPN client over lion and I want to make the ip-up and ip-down work. There is no sign of any action taken when I connect or disconnect this VPN connection. I really doubt whether the syntax has been changed or even this kind if connection is triggering the ip-up. Logically, it must be set over ppp but when using the following codes and instructions on them, there is no sign of any output in the log file: http://www.macfreek.nl/mindmaster/Modify_PPTP_Routing_Table http://www.aidanfindlater.com/use-vpn-for-specific-sites-on-mac-os-x Going for error, which there is no sign of it, using the following page: http://hints.macworld.com/article.php?story=20060616150640529 I couldn't find the /var/log/ppp/vpnd.log log file. Also the files are given full permission 0755 or a+x or even 777 using the following command: sudo chmod a+x /etc/ppp/ip-up Any clue on how to debug this would be appreciated. I am totally confused, netstat -rn -f inet doesn't show the routes. Even when the routes are added manually, closing the VPN connection does not run the ip-down and the routes must be deleted manually.

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• Why are UDP messages from outside the network received but not delivered?

  - by Warren Pena

  I have an Ubuntu Server 10.04 application I've developed that receives messages over a UDP port. The ultimate purpose of this application is to receive messages sent from workers' 3G modems out in the field. If use netcat on either another ubuntu Server or my Vista laptop (both on the same LAN as my test machine) to send a message, the message arrives correctly and appears in my application. However, if I go out to my car and use its 3G modem to send a message from the same Vista laptop, it doesn't work. If I run tcpdump -A, I see the message arrive correctly, but it's never delivered to my application. Clearly, the OS is the one making the choice not to deliver the messages (else they wouldn't appear in tcpdump nor would my app receive them when coming from local machines). I have not installed any firewall software on this machine, nor am I aware of anything installed by default that would block the traffic. sudo iptables --list returns Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I'm not too familiar with iptables, but it looks to me like that's telling it to not do anything. What could be going on that's preventing my messages from being delivered?

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• How to make sysctl network bridge settings persist after a reboot?

  - by user183394

  I am setting up a notebook for software demo purpose. The machine has 8GB RAM, a Core i7 Intel CPU, a 128GB SSD, and runs Ubuntu 12.04 LTS 64bit. The notebook is used as a KVM host and runs a few KVM guests. All such guests use the virbr0 default bridge. To enable them to communicate with each other using multicast, I added the following to the host's /etc/sysctl.conf, as shown below net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 Afterwards, following man sysctl(8), I issued the following: sudo /sbin/sysctl -p /etc/sysctl.conf My understanding is that this should make these settings persist over reboots. I tested it, and was surprised to find out the following: root@sdn1 :/proc/sys/net/bridge# more *tables :::::::::::::: bridge-nf-call-arptables :::::::::::::: 1 :::::::::::::: bridge-nf-call-ip6tables :::::::::::::: 1 :::::::::::::: bridge-nf-call-iptables :::::::::::::: 1 All defaults are coming back! Yes. I can use some kludgy "get arounds" such as putting a /sbin/sysctl -p /etc/sysctl.conf into the host's /etc/rc.local but I would rather "do it right". Did I misunderstand the man page or is there something that I missed? Thanks for any hints. -- Zack

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• solr php extension fails to run on newest Debian Wheezy

  - by hijarian

  I'm trying to use the Solr PHP extension on the recently-upgraded Debian Wheezy. It installs both from PECL and from sources flawlessly but instead of giving me expected functionality it gives me this on every PHP run: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/solr.so' - /usr/lib/php5/20100525/solr.so: undefined symbol: curl_easy_getinfo in Unknown on line 0 Also scripts which use the extension throws an error PHP Error[2]: include(SolrClient.php): failed to open stream: No such file or directory in file <...path to my autoloader...> My main point is that it was set up before and worked like a charm. In the upgrade among the relevant packages only the versions of PHP and libcurl was changed. Instance of Solr itself was left as is. I have all possible libcurl libraries: $ locate libcurl ... /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.3 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.2.0 /usr/lib/x86_64-linux-gnu/libcurl.a /usr/lib/x86_64-linux-gnu/libcurl.la /usr/lib/x86_64-linux-gnu/libcurl.so /usr/lib/x86_64-linux-gnu/libcurl.so.3 /usr/lib/x86_64-linux-gnu/libcurl.so.4 /usr/lib/x86_64-linux-gnu/libcurl.so.4.2.0 ... /usr/lib32/libcurl.so.3 /usr/lib32/libcurl.so.4 /usr/lib32/libcurl.so.4.2.0 ... I have instaled the php5-curl package version 5.4.4-2 with aptitude. I installed the Sorl extensions both with sudo pecl install solr (with various combinations of -f and -n flags and tried solr-beta too) and with wget ... cd ... phpize ./configure make make install I'm installing the 1.0.2 version of extension because it worked before the upgrade from Squeeze to Wheezy. As I said earlier, extension installs without any errors. I have already added the extension=solr.so incantation to the /etc/php5/mods-available/solr.ini What magic should I do to make solr extension work? Is this true that the only solution that I have is to downgrade the libcurl version as it was before the upgrade?

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• Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you

  - by nickf

  I've been trying to upgrade my installation of Ubuntu 9.04 to 9.10, but all of the instructions I've found haven't been helping. They mostly say to run the update manager and it'll tell you that there's a new distribution ready. Well, mine doesn't say that. Things I've run or checked: update-manager -d says: Your system is up-to-date The package information was last updated less than one hour ago. I've set it to get all new distributions, not just LTS $ cat /etc/update-manager/release-upgrades [DEFAULT] # default prompting behavior, valid options: # never - never prompt for a new distribution version # normal - prompt if a new version of the distribution is available # lts - prompt only if a LTS version of the distribution is available Prompt=normal I'm definitely running 9.04 $ lsb_release -r Distributor ID: Ubuntu Description: Ubuntu 9.04 Release: 9.04 Codename: jaunty Even running the release upgrade from console doesn't help: $ sudo do-release-upgrade Checking for a new ubuntu release No new release found This is running from behind a proxy, but I've set it up such that the regular upgrades and apt-get etc doesn't complain. (export http_proxy=http://myuser:mypass@myserver:8080/) Could you think of anything else which might be stopping me from upgrading?

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• Can I upgrade the CPU in my Lenovo 3000 N100 laptop?

  - by Pavel

  I've got an Intel Core Duo T2300 in my laptop (Lenovo 3000 N100, 0768-49G). Here is what I could find out about it: $ sudo dmidecode # dmidecode 2.11 SMBIOS 2.4 present. 42 structures occupying 1436 bytes. Table at 0x000DC010. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: 61ET37WW Release Date: 06/04/07 Address: 0xE6B70 [...] Handle 0x0002, DMI type 2, 8 bytes Base Board Information Manufacturer: LENOVO Product Name: CAPELL VALLEY(NAPA) CRB [...] Handle 0x0004, DMI type 4, 35 bytes Processor Information Socket Designation: U2E1 Type: Central Processor Family: Other Manufacturer: Intel ID: E8 06 00 00 FF FB E9 BF Version: Genuine Intel(R) CPU T2300 @ 1.66GHz Voltage: 3.3 V External Clock: 166 MHz Max Speed: 2048 MHz Current Speed: 1600 MHz Status: Populated, Enabled Upgrade: ZIF Socket L1 Cache Handle: 0x0005 L2 Cache Handle: 0x0006 L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2300 @ 1.66GHz stepping : 8 microcode : 0x39 cpu MHz : 1000.000 cache size : 2048 KB I believe the chipset is "Mobile Intel 945GM Express", but I don't know how to verify it on a Linux system. I'm not sure about the socket, but Intel claims "Sockets Supported: PBGA479, PPGA478". Now, I'd like to upgrade to the fastest compatible CPU available, but I'm a bit lost in all the details. Can you guys help me out with a couple of questions, please? What CPUs can I choose from? (I think it's only the Core2Duo line, but it should be enough for an upgrade) Can I use a 64-bit CPU? Can I use a CPU with a higher FSB than 667 MHz? Do I have to worry about additional cooling, or is it enough to check for similar voltage/TDP values? Thank you!

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• Using the RST3 plugin in the Leo Outliner

  - by T-Boy

  I'm currently trying out the Leo Outliner, and I've heard quite a bit about the RST3 plugin that it has. I'm not planning to use Leo to program just yet -- at this point I'm wondering if it might be useful for generating HTML and PDF documents, as I'm quite currently enamored with RST and how it works. I'm using my Ubuntu Netbook Remix netbook (running 9.10, I believe). I think I've got it down pat, more or less -- I've installed docutils using the Synaptics Package Manager, and I think I've gotten SilverCity installed, as per the requirements -- I've downloaded the archive, and then run "sudo python setup.py install" with no errors. The thing is, I'm not exactly sure how to invoke the rst3 plugin itself. It doesn't appear in the Plugins menu for Leo right now, and the documentation I've managed to source doesn't seem to clearly explain how to use the plugin. Has anyone had any experience in using the rst3 plugin in Leo? It's a little confusing right now, and searches on Google doesn't seem to be helping much any more. I'm using the latest 4.7.1 final version of Leo from the Synaptics Package Manager (was informed that this would have offered the best integration with UNR, so I figured, what the heck). Have I missed out on any steps here, and are there any useful tutorials on how to use the rst3 plugin?

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• Login box not shown on Ubuntu

  - by Alexandre

  I've installed Ubuntu 10.04 (64bit) as a guest OS in VirtualBox, using Windows7 Professional (64bit) as host. After Ubuntu install, I did installed Xfce4 (sudo apt-get install xfce4). Logged in using a Xfce session, and when I logged out, I couldn't see the login box anymore, only the regular gnome background from login screen. Then I restarted the virtual machine, and now I'm not able to see the login box anymore, only the gnome background. Does someone knows how to solve this? Thanks in advance Update: I've tried to use Xubuntu, that comes with Xfce. And I'm facing the same problem. As a common denominator from the two cases, now I see the problem arises after I've updated the system, and then installed curl (via apt-get), zlib (make process), git (make process). But I'm not sure this can be the cause for this ... Update: I isolated the problem. The bad guy is zlib, but I don't have a clue why. In fact, it does crash not only ubuntu and xubuntu, but also Debian (Yes, I've tested all). I'll keep this question in case someone have the same problem, but I think my initial question is not valid anymore.

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• Why does my Belkin wireless router has eMule port open?

  - by Jeremy Powell

  I have a Belkin F6D4230-4 v1 router. When I port scan it with nmap I get the following: $ sudo nmap -sS -A -T5 192.168.2.1 -p- Starting Nmap 5.00 ( http://nmap.org ) at 2010-04-17 11:40 CDT Interesting ports on 192.168.2.1: Not shown: 65532 closed ports PORT STATE SERVICE VERSION 80/tcp open http Belkin 2307 wifi router http config (IP_SHARER httpd 1.0) |_ html-title: '+i1+' 4661/tcp filtered unknown 4662/tcp filtered edonkey MAC Address: 00:22:75:5D:52:D8 (Belkin International) Device type: WAP|broadband router|firewall|printer|specialized|webcam Running (JUST GUESSING) : Linksys embedded (95%), TRENDnet embedded (95%), Netgear embedded (92%), Canon embedded (89%), On Time RTOS (89%), Symantec embedded (89%), D-Link embedded (86%), Polycom embedded (85%) Aggressive OS guesses: Linksys WRT54GC or TRENDnet TEW-431BRP wireless broadband router (95%), TRENDnet TW100-BRF114 broadband router (95%), Netgear FR114P ProSafe VPN firewall (92%), Canon PIXMA MX850 printer (89%), On Time RTOS (89%), Symantec Firewall/VPN 100 (89%), D-Link DI-714P+ wireless broadband router (86%), Polycom ViewStation video conferencing system (85%) No exact OS matches for host (test conditions non-ideal). Network Distance: 1 hop Service Info: Device: WAP OS and Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 21.57 seconds Why are the 4461 and 4462 ports open? This is a basic, out-of-the-box installation.

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• Nagios plug-in check_snmp receives NO SNMP data from a CISCO Router

  - by Shehryar

  I have tried setting up Nagios on Ubuntu 10.10, successfully installed and can login to web interface, I am however stuck on configuring snmp or I am doing something wrong here, i have followed various sites / nagios wiki to setup configuration (cfg) files. When I check on the web interface, it gives the following error on one of my cisco router: Current Status: UNKNOWN (for 0d 2h 55m 56s) Status Information: SNMP problem - No data received from host CMD: /usr/bin/snmpget -t 1 -r 5 -m RFC1213-MIB -v 1 [authpriv] 192.168.1.1:161 ifOperStatus.1 On the command-line itself, when I type the following, it just sits there waiting and waiting : sudo /usr/local/nagios/libexec/check_snmp -H 192.168.1.1 -C Routers -o sysUpTime.0 When I type the following command : I get an OK /usr/bin/snmpget -v1 192.168.1.1:161 1.3.6.1.2.1.1.5.0 -c "Routers" I have configured SNMP properly on our cisco device as we can collect SNMP Data via two other monitoring tool (SolarWinds and Manage Engine), we are tempted towards Nagios as its opensource. Will be grateful if someone could assist in rectifying this situation and guide me with setting up nagios to monitor Cisco Routers, Switches and a Few Servers. We want to monitor Bandwidth, cpu utilization, uptime and other necessary counters. Will be grateful for your assistance Thanks for reading Shehryar

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• "chown mysql:mysql /data/tmp" command

  - by Mellon

  I am on a Linux ubuntu machine with MySQL installed. If there is a MySQL installation on a Ubuntu machine, I saw some people doing the following thing: sudo chown mysql:mysql /data/tmp I get confused, I know the meaning of the above command, which is to change the owner of /data/tmp to user 'mysql' and change the group of it to 'mysql' group. But (my questions): 1. Why would one run the above command? If I create a table in my_db database, by default, there will be .frm, .MYD, and .MYI files (data files) be created automatically by MySQL under /var/lib/mysql/my_db/ . So, does the above command changes the default MySQL data directory to /data/tmp/ instead of /var/lib/mysql/my_db/? Basically, I would like to know the purpose and effect of the above command. (better with examples) 2. Where does the 'mysql' owner and group come from? Does the installation of MySQL on a Linux machine automatically create the 'mysql' user and group? or People need to manually create a mysql account for the linux machine?

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• can't find port 22 traffic under VirtualBox

  - by telliott99

  I'm trying to learn to use tcpdump. I thought I'd eavesdrop on my ssh login. The setup is a bit unusual, I have OS X Lion running VirtualBox, with Ubuntu running in the VM. I have ssh enabled and can login from OS X normally: > ssh -p 22 10.0.1.2 -l telliott Welcome to Ubuntu 11.10 (GNU/Linux 3.0.0-17-generic i686) * Documentation: https://help.ubuntu.com/ 0 packages can be updated. 0 updates are security updates. Last login: Sat Mar 31 19:54:36 2012 from toms-mac-mini.local telliott@U32:~$ logout Connection to 10.0.1.2 closed. > I have not obfuscated the ssh port on Ubuntu. From OS X, stroke gives what I expect: > ./stroke 10.0.1.2 22 22 Port Scanning host: 10.0.1.2 Open TCP Port: 22 ssh So from OS X I do: > sudo tcpdump -i en1 -v port 22 Password: tcpdump: listening on en1, link-type EN10MB (Ethernet), capture size 65535 bytes Then I login from OS X to Ubuntu using ssh, but I see nothing with tcpdump. Here is ifconfig from Ubuntu: telliott@U32:~$ ifconfig eth1 Link encap:Ethernet HWaddr 08:00:27:d7:ba:0e inet addr:10.0.1.2 Bcast:10.0.1.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fed7:ba0e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:799 errors:0 dropped:0 overruns:0 frame:0 TX packets:465 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:96863 (96.8 KB) TX bytes:68638 (68.6 KB) Where are the packets I was hoping to see? Thanks for any help.

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• socket problem with MySQL

  - by Hristo

  This is a recent problem... MySQL was working and a couple of days ago I must have done something. I deleted MySQL and tried reinstalling using the .dmg file. The mysql.sock file never gets created and I get the following error messages: Hristo$ mysql Enter password: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (2) I also tried stopping Apache and installing but Apache gave me an error... I don't know if this is good or bad: Hristo$ sudo apachectl stop launchctl: Error unloading: org.apache.httpd I tried the MacPorts installation as well but the socket file still didn't get created. I don't really know what to do and I don't want to reinstall Snow Leopard and start from scratch :/ I also tried installing the 32-bit version and same deal. No luck. Finally... I tried doing the source installation but when I get to the configuration step, I get the following error: -bash: ./configure: No such file or directory The file is "mysql-5.1.47-osx10.6-x86_64.tar.gz" so I think it is the proper file for source installation and yes I have a 64 bit system. I don't know what to do anymore. Any ideas? Thanks, Hristo

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• Problem setting command-line console resolution. vbeinfo in grub2 does not report all resolutions

  - by Kent

  I have a Asus EEE PC 1005P which I installed a Command-line system on using the Alternate Installer CD of Ubuntu Lucid Lynx. Altough I think this is a general linux and grub2 question. I do not have (or want) the X Window System installed. I want to change my console screen resolution (not inside X) to 1024x600. But it isn't reported when I use vbeinfo inside grub: grub> vbeinfo VBE info: version: 3.0 OEM software rev: 1.0 total memory: 8128 KiB List of compatible video modes: Legend: P=Packed pixel, D=Direct color, mask/pos=R/G/B/reserved 0x112: 640 x 480 x 32 Direct, mask: 8/8/8/8 pos: 16/8/0/24 0x114: 800 x 600 x 16 Direct, mask: 5/6/5/0 pos: 11/5/0/0 0x115: 800 x 600 x 32 Direct, mask: 8/8/8/8 pos: 16/8/0/24 0x101: 640 x 480 x 8 Packed 0x103: 800 x 600 x 8 Packed 0x111: 640 x 480 x 16 Direct, mask: 5/6/5/0 pos: 11/5/0/0 Configured VBE mode (vbe_mode) = ox101 grub> Relevant parts of sudo lspci -v: ... ... 00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller Subsystem: ASUSTeK Computer Inc. Device 83ac Flags: bus master, fast devsel, latency 0, IRQ 28 ... Kernel driver in use: i915 Kernel modules: i915 00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller Subsystem: ASUSTeK Computer Inc. Device 83ac Flags: bus master, fast devsel, latency 0, IRQ 28 ... ... ... Any ideas on how I can set the console resultion like I want it?

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• Apache & SVN on Ubuntu - Post-commit hook fails silently, pre-commit hook “Permission Denied”

  - by 113169587962668775787

  I've been struggling for the past couple days to get post-commit email notifications working on my SVN server (running via HTTP with Apache2 on Ubuntu 9.10). SVN commits work fine, but for some reason the hooks are not being properly executed. Here are the configuration settings: - Users access the repo via HTTP with the apache dav_svn module (I created users/passwords via htpasswd in a dav_svn.passwd file). dav_svn.conf: <Location /svn/repos> DAV svn SVNPath /home/svn/repos AuthType Basic AuthName "Subversion Repository" AuthUserFile /etc/apache2/dav_svn.passwd Require valid-user </Location> I created a post-commit hook file that writes a simple message to a file in the repository root: /home/svn/repos/hooks/post-commit: #!/bin/sh REPOS="$1" REV="$2" /bin/echo 'worked' > ${REPOS}/postcommit.log I set the entire repository to be owned by www-data (the apache user), and assigned 755 permissions to the post-commit script when I test the post-commit script using the www-data user in an empty environment, it works: sudo -u www-data env - /home/svn/repos/hooks/post-commit /home/svn/repos 7 But when I commit on a client machine, the commit is successful, but the post-commit script does not seem to be executed. I also tried running a simple script for the pre-commit hook, and I get an error, even with an empty pre-commit script: "Commit failed (details follow): Can't create null stdout for hook '/home/svn/repos/hooks/pre-commit': Permission denied" I did a few searches on Google for this error and I presume that this is an issue with the apache user (www-data) not having adequate permissions, specifically to execute /dev/null. I also read that the reason post-commit fails silently is because that it doesn't report with stdout. Anyway, I've also tried giving the apache user (www-data) ownership of the entire repository, and edited the apache virtualhost to allow operations on the server root, and I'm still getting permission denied /etc/apache2/sites-available/primarydomain.conf <Directory /> Options FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> Any ideas/suggestions would be greatly appreciated! Thanks

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• Sendmail delivering locally instead of to MTA in MX record

  - by CreativeNotice

  Ok, so I've got a box named websrv1.mydomain.com. It's a web server running ubuntu, apache2, sendmail, etc. My email is outsourced to a third party. So in my DNS I've got MX set to mx.thirdparty.net. I've no reason to accept incoming mail on my web server, every email should be sent to the third party. This works correctly accept with sending mail from the webserver (aka via cron or console). So from my web server, if I send an email to [email protected], it just disappears. No errors, nothing in dead.letter, nothing. I can send to any other address with no issues. If I send to [email protected] it's delivered locally which is fine. 1) Doing an nslookup shows the mx record is correct. 2) Running /mx mydomain.com from sendmail -bt returns the correct result. 3) Running sendmail -bv [email protected] returns: sudo sendmail -bv [email protected] [email protected]... deliverable: mailer esmtp, host mydomain.com., user [email protected] 4) Running 3,0 [email protected], returns: 3,0 [email protected] canonify input: me @ mydomain . com Canonify2 input: me Canonify2 returns: me canonify returns: me parse input: me Parse0 input: me Parse0 returns: me Parse1 input: me MailerToTriple input: me MailerToTriple returns: me Parse1 returns: $# esmtp $@ mydomain . com . $: me parse returns: $# esmtp $@ mydomain . com . $: me So I'm at a loss. Sendmail seems to see the mx record, but it's not using it.

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• stunnel not working - stunnel.pem: No such file or directory

  - by Marronsuisse

  I am trying to install stunnel on an amazon LINUX machine. (i want to configure postfix so that it sends its emails through amazon ses) I first tried to install from the tar.gz package download from http://www.stunnel.org and installed with the commands: ./configure make make install but than the stunnel command was still not found. Then I installed with yum install stunnel. But now when I try I get: sudo stunnel 2012.06.23 06:51:53 LOG7[20071:3078289200]: Snagged 64 random bytes from /root/.rnd 2012.06.23 06:51:53 LOG7[20071:3078289200]: Wrote 1024 new random bytes to /root/.rnd 2012.06.23 06:51:53 LOG7[20071:3078289200]: RAND_status claims sufficient entropy for the PRNG 2012.06.23 06:51:53 LOG7[20071:3078289200]: PRNG seeded successfully 2012.06.23 06:51:53 LOG3[20071:3078289200]: stunnel.pem: No such file or directory (2) So it seems there is still a problem with the install. When I use the locate stunnel command, I see files a bit everywhere. How can I do to have a clean install of stunnel? Edit: i was following this procedure: http://docs.amazonwebservices.com/ses/latest/DeveloperGuide/SMTP.MTAs.SecureTunnel.html when I got stuck at point 5 and got the stunnel.pem: No such file or directory message.

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• Is there a way to tell SGE to run specific jobs as root on the execution node?

  - by Rick Reynolds

  The title kinda says it all... We're using SGE/OGE to submit jobs to a set of worker nodes that then do things with specific pieces of equipment. The programs and scripts that have been created that manipulate this equipment rely on running as root. I'd like SGE to handle allocation of resources in a way that is mindful of users, groups, projects, etc., but I also need the actual jobs to run with root permissions. I've read up on How can one run a prologue script as root in gridengine? to see if anything there was pertinent, but it seems that SGE is providing the "user@" kind of spec specifically for prolog and epilog kinds of actions. Is there any similar functionality for the job itself? I'm aware of su/sudo approaches, but that won't really work in this environment because the sudoers file isn't globally managed (i.e. I'd have to add a whole set of users to /etc/sudoers on lots of machines). I'm currently looking into a setuid kind of solution, but that would definitely be an unnecessary kind of work-around if SGE provides me a way to declare that a specific job (or jobs in a specific queue) always needs to run with a specific user's rights.

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• Newbie: get access privilege

  - by Mellon

  I am newbie on Linux Ubuntu machine. I logged in to the Ubuntu with username: student. There are some directories only allowed root user to access, for example /var/lib/mysql ,(I know I can use sudo to access but it is not what I want). If I want to get the access privilege on those directories with student account, is it so that I can run the following command : chown student: PATH_TO_ROOT_USER_PRIVILEGED_DIR and after that, I can access that directory by using my own account ? am I right? If I am right, then will root user lose the access privilege because I changed it to student user? If I am wrong, please tell me the right solution. P.S. please don't concern on what I am going to do on /var/lib/mysql directory, that is only my example, as I mentioned above, I mean generally *for those directories which only have root privilege*, can I use chown to change access privilege and will root user then loose the access because of the change made by chown ? I just wanna know the effect of chown.

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• Can't install NPM after installing Node on EC2 Linux instance?

  - by frequent

  I'm trying my first attempt on getting a node server set up on an amazon ec2 linux instance. I think I made it quite far. First problem I ran into was when trying to make Node the connection timed out after a while, so I need three attempts until I got this: LINK(target) /home/ec2-user/node/out/Release/node: Finished touch /home/ec2-user/node/out/Release/obj.target/node_dtrace_header.stamp touch /home/ec2-user/node/out/Release/obj.target/node_dtrace_provider.stamp touch /home/ec2-user/node/out/Release/obj.target/node_dtrace_ustack.stamp touch /home/ec2-user/node/out/Release/obj.target/node_etw.stamp make[1]: Leaving directory `/home/ec2-user/node/out' ln -fs out/Release/node node Which tells me, "Node is done", although I'm not sure it is also working as it should. Following this,this and this tutorial, I'm now stuck at installing npm. I think I first cloned into the wrong folder, which always gave me error 127, but even if I'm doing this: cd ~ git clone git://github.com/isaacs/npm.git cd npm sudo -s PATH=/usr/local/bin:$PATH make install I'm still getting this: #after cloning# make[1]: Entering directory `/root/npm' node cli.js install bash: node: command not found make[1]: *** [node_modules/.bin/ronn] Error 127 make[1]: Leaving directory `/root/npm' make: *** [man/man3/start.3] Error 2 Question:: Since I'm pretty much a newby at everything I'm trying here, can someone please tell me what I'm doing wrong and how to get npm to install? Also, in case I cloned into the wrong folder, is there a way to remove the "false clone" or is this not written to disk until I call make install and I don't need to worry? Thanks for helping out!

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• nginx does not use variables set in /etc/environment on system reboot, but does when restarted from shell

  - by Dave Nolan

  I have a Rails app running on nginx/passenger. It restarts happily in a shell using sudo /etc/init.d/nginx stop|start|restart. But Passenger throws an error when the system is rebooted: "Missing the Rails #{version} gem". But GEM_HOME and GEM_PATH are both set in /etc/environment so surely they would be available to all processes during reboot? /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games" GEM_HOME=/var/lib/gems/1.8 GEM_PATH=/var/lib/gems/1.8 /etc/init.d/nginx #! /bin/sh ### BEGIN INIT INFO # Provides: nginx # Required-Start: $all # Required-Stop: $all # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: starts the nginx web server # Description: starts nginx using start-stop-daemon ### END INIT INFO PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin DAEMON=/opt/nginx/sbin/nginx NAME=nginx DESC=nginx test -x $DAEMON || exit 0 # Include nginx defaults if available if [ -f /etc/default/nginx ] ; then . /etc/default/nginx fi set -e case "$1" in start) echo -n "Starting $DESC: " start-stop-daemon --start --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON -- $DAEMON_OPTS echo "$NAME." ;; stop) echo -n "Stopping $DESC: " start-stop-daemon --stop --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON echo "$NAME." ;; restart|force-reload) echo -n "Restarting $DESC: " start-stop-daemon --stop --quiet --pidfile \ /var/log/nginx/$NAME.pid --exec $DAEMON sleep 1 start-stop-daemon --start --quiet --pidfile \ /var/log/nginx/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS echo "$NAME." ;; reload) echo -n "Reloading $DESC configuration: " start-stop-daemon --stop --signal HUP --quiet --pidfile /var/log/nginx/$NAME.pid \ --exec $DAEMON echo "$NAME." ;; *) N=/etc/init.d/$NAME echo "Usage: $N {start|stop|restart|force-reload}" >&2 exit 1 ;; esac exit 0 $ opt/nginx/sbin/nginx -v nginx version: nginx/0.7.67 Ubuntu lucid

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• NFS4 permission denied when userid does not match (even though idmap is working)

  - by SystemParadox

  I have NFS4 setup with idmapd working correctly. ls -l from the client shows the correct user names, even though the user ids differ between the machines. However, when the user ids do not match, I get 'permission denied' errors trying access files, even though ls -l shows the correct username. When the user ids do happen to match by coincidence, everything works fine. sudo sysctl -w sunrpc.nfsd_debug=1023 gives the following output in the server syslog for the failed file access: nfsd_dispatch: vers 4 proc 1 nfsv4 compound op #1/3: 22 (OP_PUTFH) nfsd: fh_verify(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsv4 compound op ffff88003d0f5078 opcnt 3 #1: 22: status 0 nfsv4 compound op #2/3: 3 (OP_ACCESS) nfsd: fh_verify(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsd: fh_verify - just checking nfsv4 compound op ffff88003d0f5078 opcnt 3 #2: 3: status 0 nfsv4 compound op #3/3: 9 (OP_GETATTR) nfsd: fh_verify(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsd: fh_verify - just checking nfsv4 compound op ffff88003d0f5078 opcnt 3 #3: 9: status 0 nfsv4 compound returned 0 nfsd_dispatch: vers 4 proc 1 nfsv4 compound op #1/7: 22 (OP_PUTFH) nfsd: fh_verify(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsv4 compound op ffff88003d0f5078 opcnt 7 #1: 22: status 0 nfsv4 compound op #2/7: 32 (OP_SAVEFH) nfsv4 compound op ffff88003d0f5078 opcnt 7 #2: 32: status 0 nfsv4 compound op #3/7: 18 (OP_OPEN) NFSD: nfsd4_open filename dom_file op_stateowner (null) renewing client (clientid 4f96587d/0000000e) nfsd: nfsd_lookup(fh 28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba, dom_file) nfsd: fh_verify(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsd: fh_verify - just checking nfsd: fh_lock(28: 00070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) locked = 0 nfsd: fh_compose(exp 08:01/22806529 srv/dom_file, ino=22809724) nfsd: fh_verify(36: 01070001 015c0001 00000000 9853d400 2a4892a5 4918a0ba) nfsd: fh_verify - just checking fh_verify: srv/dom_file permission failure, acc=804, error=13 nfsv4 compound op ffff88003d0f5078 opcnt 7 #3: 18: status 13 nfsv4 compound returned 13 Is that useful to anyone? Any hints on to debug this would be greatly appreciated. Server kernel: 2.6.32-40-server (Ubuntu 10.04) Client kernel: 3.2.0-27-generic (Ubuntu 12.04) Same problem with my new server running 3.2.0-27-generic (Ubuntu 12.04). Thanks.

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• BOINC error code -1200 when opening...

  - by Erik Vold

  I installed boinc 6.10.21 on my macosx 10.5 in order to upgrade from a 6.6 version that I was running today, and I am the admin user, and I was logged in as the admin user. As I was installing 6.10.21 I was asked if non admin users should be allowed to use boinc, and I said 'yes' to this. Then when I tried to open boinc I got a message like the following: "You currently are not authorized to manage the client. Either re-install and allow non-admin users or contact your administrator to add you to the 'boinc_master' user group." So I tried to reinstall first, and I was not asked if non admin users should be allowed to use boinc.. so I retried a few times and got no different result.. So I downloaded 6.10.43 and installed that, and again I was not asked if non admin users should be allowed to use boinc.. and when I tried to run boinc I got the same message like: "You currently are not authorized to manage the client. Either re-install and allow non-admin users or contact your administrator to add you to the 'boinc_master' user group." So I did a google search trying to figure out how to add my admin user to the bonic_master user group and found this which suggested I run the following in terminal: "sudo dscl . -append /Groups/boinc_master GroupMembership <your user's short name> CR" So I did this and now I get the following error: BOINC ownership or permissions are not set properly; please reinstall BOINC (Error code -1200) So I reinstall and I am ever asked the question about allowing non admin users again, and I still get this error message every after every reinstall attempt.. What should I do?..

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• How to kill unkillable Python-processes running as root

  - by Andrei

  I am experiencing an annoying problem with sshuttle running it on 10.7.3, MBA with the latest firmware update -- after I stop it (ctrl+c twice), or loose connection, or close the lid, I cannot restore it until I restart the system. The restarting takes notably more time, than it would normally take. I have tried to flush ipfw rules - not helping. Could you advice me how to restore sshuttle connection (without restarting os)? The following processes remain running as root, which I do not know how to kill (tried sudo kill -9 <pid> with no luck): root 14464 python ./main.py python -v -v --firewall 12296 12296 root 14396 python ./main.py python -v -v --firewall 12297 12297 root 14306 python ./main.py python -v -v --firewall 12298 12298 root 3678 python ./main.py python -v -v --firewall 12299 12299 root 2263 python ./main.py python -v -v --firewall 12300 12300 The command I use to run proxy: ./sshuttle --dns -r [email protected] 10.0.0.0/8 -vv The last message I get trying to restore the connection: ... firewall manager: starting transproxy. s: Ready: 1 r=[4] w=[] x=[] s: < channel=0 cmd=PING len=7 s: > channel=0 cmd=PONG len=7 (fullness=554) s: mux wrote: 15/15 s: Waiting: 1 r=[4] w=[] x=[] (fullness=561/0) >> ipfw -q add 12300 check-state ip from any to any >> ipfw -q add 12300 skipto 12301 tcp from any to 127.0.0.0/8 >> ipfw -q add 12300 fwd 127.0.0.1,12300 tcp from any to 10.0.0.0/8 not ipttl 42 keep-state setup >> ipfw -q add 12300 divert 12300 udp from any to 10.0.1.1/32 53 not ipttl 42 >> ipfw -q add 12300 divert 12300 udp from any 12300 to any not ipttl 42 Update: $ ps -ax|grep python 1611 ?? 0:06.49 python ./main.py python -v -v --firewall 12300 12300 48844 ?? 0:00.05 python ./main.py python -v -v --firewall 12299 12299 49538 ttys000 0:00.00 grep python

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• "A disk read error occurred" when booting XP disk image in VirtualBox

  - by intuited

  I'm trying to boot an XP installation cloned into VirtualBox from a real drive. I'm getting the message A disk read error occurred Press Ctrl+Alt+Del to restart whenever* I try to boot the machine. * This is not strictly true: with AMD-V enabled, the boot process appears to not make it this far and instead hangs at a black screen with cursor. I created the VirtualBox image from the original drive using the following method: $ sudo ddrescue -n /dev/sdd sdd.img logfile # completed without errors $ VBoxManage convertfromraw sdd.img disk.vdi The original disk (and the image) contain a single NTFS partition with XP installed on it. The owner of the drive indicates that it did boot okay the last time the system made it that far. The (Pentium 4) system has a broken (enormous) heat sink, so at some point it failed to boot because it would quickly overheat and shut down. If I boot the VM from a live cd, I am able to mount its /dev/sda1 without any problems. I ran ntfsfix and didn't have any luck. I've read through the instructions on doing this. I didn't really follow them. For example, I didn't run MergeIDE before imaging because the machine was not bootable. However, the symptom of that problem seems to be quite different. The emitted message is contained in the volume boot record of the XP partition, which leads me to suspect that this is a problem with the core operating system bootstrap procedure, and not related to anything in the registry. I don't have an XP boot CD.

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