Sebastian Mogilowskis Blog

Just another blog about administration, linux and other stuff

Happy SysAdmin Day! 2015

July 31, 2015 – 16th Annual System Administrator Appreciation Day http://sysadminday.com http://www.sys-admin-day.de http://de.wikipedia.org/wiki/System_Administrator_Appreciation_Day

Backup VMs on Citrix XenServer

Hi, i published my backup solution for VMs running on a Citrix XenServer Host or Pool at GitHub. https://github.com/avarrish/xenbackup It creates snapshots of all VMs running and download it to your backup location. You need the Python XenAPI which is available here: https://pypi.python.org/pypi/XenAPI http://xenserver.org/overview-xenserver-open-source-virtualization/download.html (SDK) If you want to monitor your backups take a look […]

Error when reading from SSL socket connection – Dell iDRAC 5 PE2900/PE1900

If you try to connect with java-6-openjdk or java-7-openjdk to an iDrac5 you probably get this message: Error when reading from SSL socket connection The iDrac 5 ( PE 1900, PE 2900, … ) uses SSLv3 which is disabled in Java-6 and Java-7. Just edit /etc/java-6-openjdk/security/java.security or for Java 7 /etc/java-7-openjdk/security/java.security and comment out this […]

, ,

Install Graylog 2 with Puppet

1. Informations Graylog is a very good syslog server for Linux. It collecting, indexing, and analyzing a lot of data and can send notifications via mail. https://www.graylog.org/ Note:I only tested this installation on Debian ! 2. Extra modules First you need some extra modules puppet module install elasticsearch-elasticsearch puppet module install puppetlabs-mongodb puppet module install […]

Dell OpenManage (OMSA) 7.4 on XenServer 6.5

Updated version !! Prerequirements You may need to disable the Citrix Yum Repository. Open “/etc/yum.repos.d/Citrix.repo” and change “enabled=1″ to “enabled=0″. More informations about the packages are available here: http://linux.dell.com/wiki/index.php/Repository/OMSA. 1. Install required packages yum –enablerepo=base –enablerepo=updates –disablerepo=citrix install glibc.i686 yum –enablerepo=base –disablerepo=citrix install zlib.i386 yum –enablerepo=base –disablerepo=citrix install libxml2.i386 yum –enablerepo=base –disablerepo=citrix install libxslt.i386 yum […]

Upgrading XenServer 6.2 to 6.5 with Dell Equilogic iSCSI LUNs

The Dell Equilogic only expose a single iSCSI target and one IQN, through one IP address. With default configurations of XenServer, it is not possible to establish multiple iSCSI connections if the storage array exposes only a single iSCSI target, and a single IQN, through a single IP address. By default, XenServer establishes only one […]

Dell Equilogic iSCSI with XenServer 6.2

I using an Dell Equilogic PSM4110 Storage (Bladesystem) that only expose a single iSCSI target and one IQN, through one IP address. With default configurations of XenServer, it is not possible to establish multiple iSCSI connections with this kind of storage system. XenServer establishes only one connection per iSCSI target. The recommendation is to use […]

Disabling SSLv3 for POODLE on Debian

Test and fix SSLv3 on Debian. Test for SSLv3 First test if your SSL will allow SSLv3. openssl s_client -connect YOUR_URL_OR_IP:443 -ssl3 if the answer is something like: routines:SSL3_READ_BYTES:sslv3 alert handshake failure Everything is fine and SSLv3 is not available. If your Server sends a correct handshake then you have to disable it ! Apache […]

Change Ubuntu bluetooth device

The setting was removed from controll panel. But you can change your bluetooth device name with: sudo hciconfig hci0 name ‘newName’

,

Racktables Cable ID Plugin

Racktables Cable ID Plugin Shows cable ids of an rack and highlight dublicate cable ids. Download: Just copy the file into the plugin directory of racktables.

Previous Posts