Vipin John Wilson

Author's posts

Aug 07

CHECK_NRPE: Error – Could not complete SSL handshake

If you find this error in nagios for a particular server, this means nothing but the nrpe check from nagios server cannot able to complete the service check to client server. You can check this through command line itself, run the following in nagios server. # /usr/local/nagios/libexec/check_nrpe -H hostnameORclientserverIP -c check_load CHECK_NRPE: Error – Could …

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Aug 05

nload monitoring tool

The tool nload makes it simple for us to check the incoming/outcoming traffic rate in server, it’s pretty nice and handy tool. This is very useful to check traffic stat when a server is under ddos attack. How to install it? Download nload source from # tar xvf nload-0.7.4.tar.gz # cd nload-0.7.4 # ./configure # …

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Aug 04

Manually rearrange domains due to disk space warnings

If you see home partition space warnings and you want to move high sized account from it to second home partition, you can either do it from WHM Home » Account Functions » Rearrange an Account. Doing it from WHM interface is good for accounts that have less size. Say if the account has size …

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Jun 19

Install Skype in Ubuntu

Download debian package for Skype from the following url, from it I chose Ubuntu multi arch version. After downloading skype-ubuntu-precise_4.3.0.37-1_i386.deb , install it with dkpg which is the package manager for Debian version. # dpkg -i skype-ubuntu-precise_4.3.0.37-1_i386.deb If you get an error on it ———-   Errors were encountered while processing:   skype # …

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Apr 10

cloudlinux: PHP selector NOT working or BROKEN

It was truly devastating and I was dismayed when I noticed the PHP selector in server got broken or stopped working since the last easy-apache. Tones of tickets were popped in when clients lost their custom php versions and its custom settings I tried to select the php version 5.4 for the domain and set …

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Apr 01

/etc/resolv.conf is being overwritten everytime??? | Ubuntu work around

Yes it is true in ubuntu, even if we manually set custom nameservers in /etc/resolv.conf it will overwrite on next reboot or network restart or modem/router restart. It is really annoying once we set google nameservers or opendns or whatever in resolv.conf it goes back to default page on each instance of restart or modem …

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Mar 30

Install Java and Enable it for Web Browsers | Linux

(Steps based on what I did in Ubuntu OS) As you know Java is essential to be installed and should be enabled to web browsers on local machines from where the system admins access their servers. The need of Java in most cases while we access consoles like KVM switches, IPMI etc to reboot a …

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Mar 04

Login fails to Roundcube, Horde, Squirrel in Webmail

Do the solution steps as mentioned here for the following error you see in Roundcube, Horde and Squirrel mails after successfully logging in webmail. ==== Login failed because your username or password was entered incorrectly ==== #First check the domain name is there in files /etc/localdomains or /etc/remotedomains depends on its local or remote mail …

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Jan 23

Proper Method To Change Default Mysql Engine Permanently

Here the mysql engine is set to InnoDB by default and I want to change it to MyISAM for long run. It was the old way setting parameter “skip-innodb” and commenting “innodb_file_per_table=1” in my.cnf file. Additionally we used to execute mysql query “SET storage_engine=MYISAM;”. Now a days, the above changes wont work and perhaps the …

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Jan 20

Re-setup and configure the broken WiFi network in RHEL/CentOS/Fedora

Recently I installed CentOS on my VAIO laptop and I had to do some further up-gradation of outdated packages, but that shoved me into a real headache. The WiFi network was working good till starting the upgradation procedure, but stopped right after completing the process. I had no idea then about how this was happened. …

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