Setup Remote Desktop on CentOS / Red Hat
This is a modified repost for my own documentation from 7ota This tutorial deals with setting up a machine for remote desktop access just like an RDP connection to a windows system but using VNC.
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Installing Development Tools on CentOS / Red Hat
If you missed installing the Development Tools in the initial install, there is a quick way to load them without installing them individually. yum groupinstall ‘Development Tools’ This will install gcc, make, automake plus otther tools with all their dependencies and libraries.
Configure Software Updater to Usa a Proxy
To get the Software Updater application in CentOS/Red Hat to use a web proxy server, add the following line in the [Main] section of the /etc/yum.conf file. proxy=http://{proxyserver}:{port}/ Be sure to keep the trailing / slash on the end.
Quick Zabbix Agent install for CentOS
extract source on host create user zabbix set passwd for zabbix switch user to zabbix run ./configure –enable-agent switch user to root run make install mkdir /etc/zabbix edit zabbix_agentd.conf and change hostname mv /home/zabbix/zabbix_agentd.conf /etc/zabbix/ mv /home/zabbix/zabbix-agent.init /etc/init.d/zabbix-agent chkconfig –add zabbix-agent chkconfig zabbix-agent on service zabbix-agent start
Pass Output of One Command to Another
The below Linux command has one purpose, to create a file with the current date in a single command line, but its concept can be used in many other ways. date +%Y-%m-%d | xargs -I {} touch file_{}
Do your VMs have all the resources you think they have?
I have a ‘well established’ VMware infrastructure that started back in ESX 1.51. So obviously I have been through many upgrades and/or migrations, but even though my ESX servers have been rebuilt, my VMs from older versions were not. I don’t remember which revision or which combination of upgrade/migration caused it, but it did warn […]
Expanding Windows Virtual Machine Disks in VMware
Increasing the size of disks got a lot easier with the release of Update 2 for ESX 3.5 and VirualCenter 2.5. You no longer have to login to the console and use the vmkfstools command.