Sebastian Mogilowskis Blog

Just another blog about administration, linux and other stuff


Dell OpenManage (OMSA) 8.3 on XenServer 7

First step is to add the Dell OpenManage Repository: wget -q -O – | bash Befor we can start the installer we had to fix the centos repository from the xenserver. Open “/etc/yum.repos.d/CentOS-Base.repo” with your favorite editor and change the baseurl from the [base] section to: baseurl= We have to do this because this […]

Upgrade to Citrix XenServer 6.5 to 7

First Download XenServer Installation ISO and the new Windows Management Console from: Now upgrade your Management Console an reconnect to your XenServer Cluster. Now stop HA and move all VMs from the Master Host to the Slaves. You must start with the Master !! You can get your Master with this command: xe pool-list […]

Backup VMs on Citrix XenServer

Hi, i published my backup solution for VMs running on a Citrix XenServer Host or Pool at GitHub. It creates snapshots of all VMs running and download it to your backup location. You need the Python XenAPI which is available here: (SDK) If you want to monitor your backups take a look […]

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: 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 […]

Change the Subnet of VMWare Network Interfaces

If you install VMWare Player or Workstation the installer searches free subnets for the host-only network adapters vmnet1 and vmnet8. Sometimes this isn’t compatible with networks at other locations. Like Wifis, VPN connections or the networks at your work place. You can change this subnets if you want. On Linux open “/etc/vmware/networking” and change the […]

Xen FileSystem Performance Test

Testing XenServer filesystem performance on plain hardware and the difference between EXT and LVM. How To Change the Default Storage Repository to EXT3 Hardware IBM Blade HS21 2x Intel(R) Xeon(R) CPU E5540 @ 2.53GHz 16 GB RAM LSI SAS 1064 with 2 SAS Disc with Raid 1 Software XenServer 5.6 SP2 Virtual Machines Ubuntu VMs […]


Install VMware Tools on Debian Squeeze

1. Install required packages aptitude install autoconf automake binutils cpp gcc linux-headers-$(uname -r) make psmisc 2. Mount VMware Tools mkdir /tmp/vmtools mount /dev/cdrom /tmp/vmtools 3. Unzip the tools tar -C /tmp -vfx /tmp/vmtools/VMwareTools*.tar.gz 4. Run install script cd /tmp/vmware-tools-distrib ./ Note: You can also use the “open-vm-tools” instead of installing the VMware Tools. aptitude install […]

, , ,

Enable SNMP on Citrix XenServer 5.6

Open XenServer Console or open a SSH connection to your XenServer for this howto: 1. Firewall Settings Open “/etc/sysconfig/iptables” with “vi” editor and add the following line to allow SNMP connections: -A RH-Firewall-1-INPUT -m state –state NEW -m udp -p udp –dport 161 -j ACCEPT Restart iptables service: service iptables restart 2. Configurate SNMPD Edit […]

, , ,

Previous Posts