Author Archives: admin

How to Check RAM/Memory by Percentage

Assalamualaikum, Using the the free command: This will report the percentage of memory in use % free | grep Mem | awk ‘{print $3/$2 * 100.0}’ 23.8171 This will report the percentage of memory that’s free % free | grep … Continue reading

Posted in Linux | Tagged , , , ,

RHEV/oVirt Environment is Non Responsive with Errors as: Received fatal alert: certificate_expired

Assalamualaikum. Issue 1. Certificates have expired and all hosts are non responsive 2. Getting error as below in the engine logs: ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.UploadStreamVDSCommand] (DefaultQuartzScheduler_Worker-64) [6d32f092] Command ‘UploadStreamVDSCommand(HostName = xyz, UploadStreamVDSCommandParameters:{runAsync=’true’, hostId=’12345dbe-1db1-11e1-ade1-00215e97f418′})’ execution failed: Received fatal alert: certificate_expired ERROR [org.ovirt.engine.core.bll.UploadStreamCommand] … Continue reading

Posted in Linux, oVirt, RedHat, RHEV, RHV, Virtualization | Tagged , , , ,

How to Install oVirt Guest Agent in Fedora/CentOS/RHEL

Assalamualaikum. The oVirt Guest Agent provides information, notifications, and actions between the oVirt web interface and the guest. The agent provides the Machine Name, Operating System, IP Addresses, Installed Applications, Network and RAM usage and others details to the web … Continue reading

Posted in oVirt | Tagged , ,

How to Identify the File System Type in Linux/Solaris

Salam.. There are few methods how to determine your linux file system. Below are commands that I usually use. Linux $ df -Th $ df -Th | grep “^/dev” $ fsck -N /dev/sd* $ lsblk -f $ mount | grep … Continue reading

Posted in freeBSD, Linux, Solaris, UNIX | Tagged ,

Happy New Year 2018!

.. Last login: Tue Jan 2 12:11:49 2018 from [hanief@master ~]$ mv 2017 /archive [hanief@master ~]$ sudo mkdir 2018 [hanief@master ~]$ cd 2018 [hanief@master ~]$ vi [hanief@master ~]$ chmod +x [hanief@master ~]$ nohup ./ & [hanief@master ~]$ … Continue reading

Posted in Linux, UNIX | Tagged ,

CentOS-7 “Minimal Desktop” installation (GNOME)

Assalamualaikum.. For some reasons you need to install GUI on your CentOS server. In my case, I having a bad time to install Oracle Database 12c in my CentOS using CLI. I don’t have plenty of times struggling with CLI … Continue reading

Posted in Install, Linux, UNIX | Tagged , , , , , , , ,

Enable Snipping Tools in Win Server 2012 R2

Salam.. Snipping Tool is not enabled by default in Wndows Server 2012 R2. To install Snipping Tool, just follow the next instructions: Go to Server Manager Click Manage in the upper right corner. Click Add Roles and Features. Click Next … Continue reading

Posted in Windows | Tagged , , , , , , , , ,