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Final check list before server goes to production

Final check list before server goes to production:

After you build the server for Production environment, you need to be extra careful before you give it application team or customer. Here are some of the consideration which I have in my mind.

Backup requirements Monitoring requirements Network redundancy All firmware and software patches up […]

Linux system/kernel update and backup plan

Linux system/kernel update and backup plan

When you are doing critical patch upgrade on Linux(Redhat/Centos/Fedora) boxes, you better to collect system data before you upgrade. If there is any issue, you can revert them backup.

To collect data, you can execute sysreport command.

# sysreport

WARNING: sysreport is deprecated, please use sosreport instead.

sosreport (version […]

Best Linux distribution

Best Linux distribution

When user is looking for Linux distribution, they look for different purposes and here are some of the category that they look for. From my experience, here are my suggestions:

Best Server Distribution Red Hat Enterprise Linux (RHEL) SUSE Linux Enterprise Server (SLES) Best Desktop Distribution Ubuntu Fedora Best Laptop Distribution openSUSE […]

How to Troubleshoot Linux Kernel Panics?

How to Troubleshoot Linux Kernel Panics?

What is a kernel panic? Kernel panic occurs where it doesn’t know how to handle the commands or codes, basically Linux kernel gets into a situation where it doesn’t know what to do next. When this happens, the kernel gives as much information as it can about what caused […]

How to change IP address on Linux

How to change IP address on Linux

If you want to change the IP address temporarily, then you can use the following command.

ifconfig eth0 address x.y.z.w

To change the IP addres permanently, you need to modify the following file.

/etc/sysconfig/network-scripts/ifcfg-ethx

Where ifcfg-ethx is the interface name . Normally default interface is eth0

DEVICE=eth0 […]

Linux performance monitoring tools

Linux performance monitoring tools

Linux performance monitoring is very important for system administrators. Most of the time applications use more resources and it makes server to give slow response, and then we will started to get complain from other users. Here are some monitoring tools you can use to monitor performance.

Tool Most useful tool […]