R71 IT Blog

Number of services in Centreon doubled, just the number not the actual amount of services. Nagios has no strange behaviour. Problem is in the NDO database. Solution: Stop Nagios Empty all tables of NDO (via phpmyadmin) Start Nagios via the Centreon frontend

To reduce the size of your esxtop output by selectively include only the statistics you are interested in. This way you save a lot of time collecting the data and this makes the command usefull for monitoring systems like Nagios. Here’s how you can narrow down the collected stats for easier analysis and smaller output:…

Configure CentOS 5.5 cd /etc/sysconfig/network-scripts/ cp /etc/sysconfig/network-scripts/ifcfg-eth0  /etc/sysconfig/network-scripts/ifcfg-eth0.bak scp root@10.0.2.16:/etc/sysconfig/network-scripts/ifcfg-eth0  . cat ifcfg-eth0.bak |grep -i hw >> ifcfg-eth0 cat ifcfg-eth0.dhcp |grep -i Intel >> ifcfg-eth0 vi ifcfg-eth0 service network stop service network start vi /etc/resolv.conf dig google.nl yum update vi /etc/sysconfig/network service network reload yum update vi /etc/sysconfig/selinux chkconfig –level 123456 ip6tables off shutdown -r …

Install the RCLI on a pc/laptop/server. Got to the command prompt and enable SNMP. vicfg-snmp.pl –server <your_host> -t snmptrapsystem@port/community -c communitystring (@port is optional in this command) – you can also set the community with the -c switch vicfg-snmp.pl –server <your_host> -E = enable the service vicfg-snmp.pl –server <your_host> -E = stop the service vicfg-snmp.pl…

Login via telnet and tyoe the followig commands: service system modify name=SNMP_AGENT state=enabled log=enabled snmp community add securityname=ROCommunity communityname=public On a linux machine use snmpwalk and version 1 to execute a query: # snmpwalk -v1 -c public 192.168.0.1

Create an unattended installation for ESXi Installable version This article is usable for the ESXi 4.0 and 4.1 version. For 4.1 you need to do more then in 4.0 because of a file that needs te be uncompressed in a special way, see the end of the article where I have written the new info.…

I was in need of a shortlist of the new VMware ESX 4.1 features: VMware vSphere 4.1 can support up to 3,000 virtual machines per cluster and 1,000 hosts per vCenter server, both roughly three times the limits in vSphere 4.0. The number of virtual machines per data centre now maxes out at 5,000, which…

How to install Zimbra 6.0.7 on Fedora Core 11 x64 in an Virtual Machine on ESX4.1? Pre Zimbra installation configuration Install Fedora Core 11 with minimal requirements on a 20GB VMDK. Make sure you got enough space for future upgrades on the volume. setenforce 0 service iptables stop chkconfig –level 12345 iptables off setup your…

Upgrade a single ESX1i 4.x host to a higher version by executing the following steps: On your laptop/pc install vSphere CLI Download an upgrade package like ESXi4.0-to-4.1.0-0.0.260247-release.zip Put the ESX host in maintenance mode. Open a MSDOS console on you laptop and goto C:\Program Files\VMware\VMware vSphere CLI\bin vihostupdate.pl –server 192.168.0.1 -i -b F:\upgrade-from-ESXi4.0-to-4.1.0-0.0.260247-release.zip Enter username:…

fsutil fsinfo ntfsinfo f: NTFS Volume Serial Number :       0xb004a43704a3ff0a Version :                         3.1 Number Sectors :                  0x00000000001fddc2 Total Clusters :                  0x0000000000007f77 Free Clusters  :                  0x0000000000007e7c Total Reserved :                  0x0000000000000000 Bytes Per Sector  :               512 Bytes Per Cluster :               32768 Bytes Per FileRecord Segment    : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length…

Intro Here is an example of a script I use to perform an unattended install of a VMware vSphere ESX 4.1 host. I install on HP Blades, so therefore I started with taking control of the ILO, mount the VMware ISO and a local folder on my pc containing the ks.cfg file. Later I started…