Solved: Why Linux Server rebooted when all LUN paths failed ?
Today in this article, we will see an interesting issue what i faced on one of the production server which got rebooted automatically during a SAN switch replacement activity. ...
Tag: unix
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How to extend LV on RHEL/CentOS with a single command on live systems ?
Today we will look at one of the useful tip to understand how to extend logical volume on RHEL/CentOS with a single command on production servers. Lets see the process...
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TCPDump useful examples for day to day tasks for RHEL/CentOS.
In this article we will look for tcpdump examples which are useful to accomplish our day to day tasks. Lets have a look at various examples step by step. 1....
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Find files modified before 15 days in current directory and delete them.
In this article, we will see how to find files/directory older than say 15 days and delete those files. The tip is very useful and we use this every alternate...
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Solved: Satellite Certificate has expired error 3006 code on Redhat Satellite 6.5.
Today we will look at an interesting error message and its resolution. I have encountered this issue multiple times during redhat satellite migration from 5 to 6 and most of...
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How to sync repository in Redhat Satellite 6.5 ?
In this article, we will look how to synchronize a repository on a Redhat satellite 6 server. 1. Check the repository id. [root@ngelinux01 ~]# hammer repository list hammer repository synchro-----|----------------------------------------------------------------------------------|---------------------------------------------------------------|--------------|---------------------------------------------------------------------------------...
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Systemctl : RHEL 7: How to check, start, stop, and manage units/services ?
Today we will look various systemctl commands to check units/services, start/stop/restart them. In short how to play/work with systemctl commands to manage services/units. 1. How to see all units loaded...
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Solved: ERROR: E: Failed to install /usr/sbin/eject during RPM installation.
Today we will check how to resolve an interesting issue i encountered while installing a package on server. I was installing realtime kernel package on one server and it had...