Entries by Jonas Genannt

If you would like to use SNMP to monitor your dell server with OMSA (server administrator) installed, you have to configure your local SNMPd.

First you have to enable SNMP on OMSA:

/etc/init.d/dataeng enablesnmp

Than restart your Data Engine System from OMSA:

/etc/init.d/dataeng restart

You can now install the snmp daemon from debian:

apt-get install snmpd

SNMPd should listen to all interfaces. You can configure this at /etc/default/snmpd

Please note, that you have to remove the entry -I -smux, because OMSA uses snmp smux for communicating with the SNMP daemon.

The following snmpd.conf is tested to work with OMSA:

com2sec local localhost public
com2sec watchdog 192.168.168.0/24 public
smuxsocket 127.0.0.1
smuxpeer .1.3.6.1.4.1.674.10892.1
group MyRoGroup v2c local
group MyRoGroup v2c watchdog
view all included .1
access MyRoGroup "" any noauth exact all none none

Now restart the snmpd and install also the dell mibs. You can find the mibs in /opt/dell/.

After the restart you can walk throw your SNMP tables:

snmpwalk -v2c -c public localhost 1.3.6.1.4.1.674.10893

If you want to monitor the health of your server I can suggest you the following nagios plugin:

check_omsa_snmp.pl - this plugin checks temperature,voltage, Power Supply and Cooling Devices

Last year I has written an article about the Leerstetten Main-Danube lock.

Today I have seen this lock the first time in action.

If you are running clamav daemon on debian etch, and your clamav daemon takes up to 3-4 minutes to create the unix socket and the pid file, don't despair it's an clamav bug.

While you are running clamav with amavis this bug can be very annoying:

amavis[22480]: (21470-02) (!!) ClamAV-clamd av-scanner FAILED: Too many retries to talk to /var/run/clamav/clamd.ctl (Can't connect to UNIX socket

If you strace your clamv on the startup time you get many of these messages:

read(10, "n.Downloader-14249\n29184:5d2a569"..., 4096) = 4096
read(10, "15872:15a82a8cbbb437f9249c944391"..., 4096) = 4096
read(10, "a6288c61679d87f00:Trojan.Bancos-"..., 4096) = 4096
read(10, "db2a:Trojan.IRCBot-1189\n24576:5e"..., 4096) = 4096

The clamav version is debian etch is 0.90.1.
The bug is fixed in version 0.91rc2. So you could use the backports.org packages (0.91.2).

Last week I had to disable the public ticket submission on CpVES website because of spam.

If you have any problems with CpVES, please drop me a mail.

I have updated my 3Ware 3dm2 and 3Ware CLI debian packages. I also included the patch from tretkowski.de.

Now version 9.5.0 is available on jonas.genannt.name.

Last night I have launched an new website: dnsutils.org.

This site contains of some nice dns tools and some IP address tools.

The next planed features are:
- whois
- traceroute

If you have any feature requests drop me an mail or submit an comment to this post.

This morning, I had to install my 3dm2 package on an server with vlans on the local ethernet device.

I installed the packages as always, but I was not able to start 3dm2. The software failed with

(0x0C:0x0005): Failed to start listening socket

After some debuging, I have changed RemoteAccess parameter to 0. After this modification in the configuration file, I was able to start 3dm2 on the machine.

So I think 3dm2 is not able to handle ethernet devices with vlans enabled...

Today I have released an new version of my CpVES software. I suggest all users of CpVES to upgrade to version 0.06 because the old version 0.04 and 0.05 has got some nasty bugs.

You can download CpVES here.

New CpVES version is out. It has got some new features like:

• filter duplicate mails


• ham/spam learning


• fetchmail frontend


• delete spam


• english webinterface


• many improvments and bug fixes

CpVES can be found here: http://trac.brachium-system.net/cpves/

If you want to start an DomU with xm create foo.bar.domain and you get the following output:

error: (22, 'Invalid argument')

I have found the following two possible problems:

• DomU kernel has got no Xen support


• DomU kernel uses PAE; hypervisor and Dom0 kernel does not support PAE

I have updated my 3Ware 3dm2 and 3Ware CLI debian packages.

Now version 9.4.1.2 is available on jonas.genannt.name.

If you are using Policyd-weight and you want to monitor it with your nagios, you can use my policyd-weight nagios plugin.

You can download it here.

If you update from sarge to etch with an running 3dm2, please make sure if you use the default etch kernel (version 2.6.18) that you have installed the newest version of 3dm2.

If you use an old 3dm2 version with the etch kernel you get the following messages in dmesg:

3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.
3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.

You can get the newest version of 3dm2 here.

New ( version: 9.4.1.1) 3Ware CLI programm is now packaged. You can find it on: jonas.genannt.name.

Please have a look at: Using the tw_cli

If you get this "4gb seg fixup" message on tty and/or in your /var/log/messages after the reboot to the Xen Hypervisor on Etch, you should check if you installed libc6-xen on your system.

If not, install it, and reboot the system again.