This is the collection of Linux-related tips and tricks, mostly administration and configuration that helps to integrate Linux system into Windows office environment.
This tutorial will cover the basics of the GNOME desktop environment and application framework. GNOME uses the GTK and GNOME API to provide the software developer interfaces.
3. Grub has the kernel finding the root fs through the "root=LABEL=[fslabel]" clause. In my case, it's "root=LABEL=FedoraRoot". I checked the filesystem label of the root fs by running 'e2label /dev/SystemMain/FedoraRoot', which returned no label. I then set the label to "FedoraRoot" and tried to boot into Fedora. Still go the same error.
I tried to unpack the .img file and compared it to another .img on a successful-upgraded machine. mkdir /tmp/initrd cd /tmp/initrd gzip -cd /boot/initrd-xxxxxxxxx.img | cpio -imd --quiet
Creating iptables Rulesets It's a great starting-point for ruleset development to see what ports are currently in-use, and consider that these may need to be opened through our firewall. To see what ports are in-use, and by what programs/services: hostname ~ # netstat -alnp Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fjviz.research.iat.sfu.ca%2Fwiki%2Findex.php%3Ftitle%3DHOWTO_Setup_iptables
Need to monitor Linux server performance? Try these built-in command and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as: Finding out bottlenecks. Disk (storage) bottlenecks. CPU and memory bottlenecks. Network bottlenecks.
"How to set up for usage with yum (minimum required version: yum 2.4.x): RHEL5, CentOS, Scientific Linux, RHEL4 yum, SLES yum Note: The version of yum distributed on CentOS 3 by default is too old (yum 2.0.8). You will need to upgrade to a yum 2.4.x version in order to use these repositories. The older version of yum does not support plugins or mirrorlists, which are required for these repos to work. "
Linux Shell Scripting Tutorial (LSST) v2.0 A Beginners Handbook for New Linux Users / Sys Admins and School Students Studying Linux or Computer Science.
We run a big share of Xen virtual servers spanned over multiple servers and if you want to use the full or best capability of Xen, I would suggest LVM (Logical Volume Manager), it makes life a lot easier, especially for those who do not run a RAID setup (We run RAID10 on all VM nodes) as you can split the partition over multiple hard drives. I’m not going to cover setting up the LVM as there are loads of tutorials on how to do that but I will rather cover the best way to migrate a LVM volume.
ConVirt provides enterprise-class management of open source virtualization platforms, making open source virtualization an extremely viable and cost-effective choice for enterprises. ConVirt lets you manage the complete lifecycle of Xen and KVM virtualization platforms from a central, GUI dashboard. With sophisticated template-based provisioning, centralized monitoring, configuration management and administration, IT administrators can now automate the entire virtual machine lifecycle on open source platforms. ConVirt is an open source product backed by commercial, enterprise-class support, so you get the best of both worlds: a sophisticated, commercially-backed solution that is also highly cost effective. Annotated link http://www.diigo.com/bookmark/http%3A%2F%2Fwww.convirture.com%2Fproducts.html