Lik`s forum

cPanel 11.25 introduces a new feature: The ability to have RoundCube use SQLite instead of MySQL. After benchmarking resource usage and performance, I’ve come to the conclusion that SQLite is definitely the best way to go for Roundcube. Having trouble making the decision? This article may help clear things up for you.

Here are the pro’s for running Roundcube over SQLite:

* SQLite is generally faster than MySQL
* Since the SQLite databases are stored ...

Roundcube backups and logs can be found at the following directory on the cPanel-based server:

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ls -la /var/cpanel/roundcube

Simple way to list all the available backups in this directory is:

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find /var/cpanel/roundcube -maxdepth 1 -type f -name "roundcube.backup.sql*"

Via root SSH access, the following command may be used to monitor the Roundcube logs while sending a test message in attempt to trigger the issue (and to see the resulting error details that are logged):
tail ...

Cpanel has a lot of supporting software that you may be using on your server. In case something goes amiss, here is a list of scripts that reinstall cpanel-provided software on your system. For most all of these, you can pass a –force as an argument to force a reinstall of the application.

cPanel

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/scripts/upcp

MySQL

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/scripts/mysqlup

PostgreSQL

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/scripts/installpostgres

Roundcube

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/usr/local/cpanel/bin/update-roundcube

Horde

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/usr/local/cpanel/bin/update-horde

Squirrelmail

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/usr/local/cpanel/bin/update-squirrelmail

phpMyAdmin

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/usr/local/cpanel/bin/updatephpmyadmin

pureFTP

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/scripts/ftpup

Exim

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/scripts/eximup

Courier IMAP

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/scripts/courierup

Dovecot ...

For nice vzlist output on the carrier server following bash alias should be set:

File /root/.bashrc

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alias vzlist="vzlist -o veid,ip,hostname,numproc,numfile,numflock,numtcpsock,kmemsize,physpages,laverage -a"

Special thanks to Vladimir B.

In case if we need swap for running some specific software, we can do the following inside VPS:

1) Create the fake-swap.sh shell-script:

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#!/bin/bash

SWAP="${1:-512}"

NEW="$[SWAP*1024]"; TEMP="${NEW//?/ }"; OLD="${TEMP:1}0"

umount /proc/meminfo 2> /dev/null
sed "/^Swap\(Total\|Free\):/s,$OLD,$NEW," /proc/meminfo > /etc/fake_meminfo
mount --bind /etc/fake_meminfo /proc/meminfo

free -m


2) Make script executable;
As you can see from script's code the default size of swap will be 512Mb, but if you need more bigger swap you may run ...

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file /boot/initrd-2.6.18-194.8.1.el5.img
#/boot/initrd-2.6.18-194.8.1.el5.img: gzip compressed data, from Unix, last modified: Tue Jul 13 18:30:50 2010, max compression

Rename it to end in .gz and uncompress:

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gzip -d initrd-2.6.18-194.8.1.el5.img.gz
file initrd-2.6.18-194.8.1.el5.img
#initrd-2.6.18-194.8.1.el5.img: ASCII cpio archive (SVR4 with no CRC)

Let's open the compress cpio file:

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mkdir initrd_uncompressed
cd initrd_uncompressed
cpio -dumi < ../initrd-2.6.18-194.8.1.el5.img

To pack modified content back into initrd image do the following:

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find . |cpio -H newc -ov |gzip -c - > ../initrd-2.6.18-194.8.1.el5.img

...

http://wiki.openvz.org/Physical_to_container

If you intend to check whether all library dependencies are satisfied or not, you might be interested in the pkg_libchk utility from sysutils/bsdadminscripts.

If you mean "which port depends on which ports", either run pkg_info -rR <portglob> for an installed port, or run make build-depends-list && make run-depends-list in a port directory under /usr/ports.

Finally: if you wonder which dependencies you still need to install for a port, run make missing in a port directory ...

Name
partprobe - inform the OS of partition table changes

Synopsis
partprobe

Description
partprobe is a program that informs the operating system kernel of partition table changes, by requesting that the operating system re-read the partition table.

Options
This program uses short UNIX style options.

-d
Don't update the kernel.
-s
Show a summary of devices and their partitions.
-h
Show summary of options.
-v
Show version of program.

Nagios XI

Free License For Small Environments

Have a small environment you need monitored? Nagios XI will monitor up to seven (7) hosts/nodes with unlimited services free of charge! Just select the free license in the XI administration interface. Perfect for SOHO and personal use. Support services are not included when using a free license.

Pricing

Pricing for XI licenses is determined by the number of hosts (nodes) you intend to monitor. There are no ...