ImageMagick install in cPanel/WHM server

First we need to check ImageMagick is installed in the server.

[~]#/scripts/checkimagemagick

missing

[~]#/scripts/installimagemagick

Appending installation info to /usr/lib64/perl5/perllocal.pod

OK

Successfully installed Image-Magick-6.77

1 distribution installed

ImageMagick installed ok

[~]# convert --version

Version: ImageMagick 6.8.0-1 2013-01-24 Q16 http://www.imagemagick.org

Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC

Features: OpenMP 

WHM -> Software -> Module Installers -> PHP Pecl > click manage
Install a PHP Pecl box type " imagick "and click "Install Now"

[~]#/scripts/restartsrv_httpd

root@ajeesh [~]# /scripts/checkimagemagick

ok

Uninstalling

/scripts/cleanimagemagick

WHM -> Software -> Module Installers -> PHP Pecl and click uninstall Imagick.

Memory set for a Xen Node

After installing a Xen server we need to cap the Xen Node's total Moemory, If it is not set ,the Total memory of the server will assigned to "Domain-0" and we can not add new VPS on this newly created Xen Node.

We can cap the host node memory by editing /etc/grub.conf ,
Suppose we want to cap 512MB RAM then we should add dom0_mem=512m at the end of Kernel parameter.

title CentOS (2.6.18-308.24.1.el5xen)
        root (hd0,0)
        kernel /boot/xen.gz-3.4.4 dom0_mem=512m
        module /boot/vmlinuz-2.6.18-308.24.1.el5xen ro root=LABEL=/
        module /boot/initrd-2.6.18-308.24.1.el5xen.img

After this changed i have rebooted the server.

#] shutdown -r -f now

  Before capping :

[root@server.ajeesh ~]# free -m

total used free shared buffers cached

Mem: 3521 1386 2134 0 148 931

-/+ buffers/cache: 305 3215

Swap: 4094 0 4094

xm info

total_memory : 4094

free_memory : 4

After the capping :

 [root@server.ajeesh ~]# free -m
total used free shared buffers cached
Mem: 512 418 93 0 35 181
-/+ buffers/cache: 200 311
Swap: 4094 0 4094

Xm info

 total_memory : 4094
free_memory : 3013

Can not create VPS in Solsvm Xen

First we need to check the Xen logs here /var/log/xen/xend.log
root@server10.ajeesh]# tail -f /var/log/xen/

VmError: Kernel image does not exist: /boot/solus-vmlinuz

If you found this error simply execute the following commands and your vps get added.

php /usr/local/solusvm/includes/xenkernel.php

Restarting MediaCore service

Please note down the steps to restart the mediaCore service.

Media core default port is 5000

1. change the directory to the installed location :
2. execute this command

source mediacore_env/bin/activate

You will get the Media core Environment

(mediacore_env)

3.

(mediacore_env)root@server [media core installed location]# paster serve --daemon --reload development.ini

Starting subprocess with file monitor

Entering daemon mode

4. root@server [/]# netstat -lpn | grep :5000
tcp 0 0 serverIP:5000 0.0.0.0:* LISTEN 11402/python

WHM/cPanel 500 error

Internal Server Error 500
No response from subprocess (whostmgr (cpanel)) with exit signal: 0

# tail -f /usr/local/cpanel/logs/error_log
warn [whostmgr10] Unable to write datastore file: /root/.cpanel/datastore/_usr_local_cpanel_cpanel_-F: target directory does not match uid 0 at /usr/local/cpanel/Cpanel/CachedCommand/Save.pm line 24
        Cpanel::CachedCommand::Save::_savefile('/root/.cpanel/datastore/_usr_local_cpanel_cpanel_-F', SCALAR(0x100ed20)) called at /usr/local/cpanel/Cpanel/CachedCommand.pm line 210
        Cpanel::CachedCommand::_cached_cmd('binary', '/usr/local/cpanel/cpanel', 'args', ARRAY(0x10479f0), 'mtime', 1356972302) called at /usr/local/cpanel/Cpanel/CachedCommand.pm line 27

I have seen some root files are in wrong file permission. After correcting this i have restarted my cPanel service in the server fixed my issue.

service cpanel restart