install rrdtool centos

ref: http://www.cyberciti.biz/faq/howto-install-rrdtool-on-rhel-linux/

Step # 1: Install required dependencies

Login as root and type the following command:
# yum install cairo-devel libxml2-devel pango-devel pango libpng-devel freetype freetype-devel libart_lgpl-devel

Untar tar ball, enter:

Step # 2: Download latest rrdtool tar ball

# tar -zxvf rrdtool-1.3.1.tar.gz

Step #3: Compile and install rrdtool

You need to set PKG_CONFIG_PATH, enter:
# export PKG_CONFIG_PATH=/usr/lib/pkgconfig/
Type the following commands:

Now compile and install RRDTool on RHEL:

# ./configure

# make
# make install
# cd /usr/local/
# ln -s rrdtool-1.3.1/ rrdtool/
# cd rrdtool
# ls -l

Type the following commands:
# cd /opt/
# wget http://oss.oetiker.ch/rrdtool/pub/rrdtool-1.3.1.tar.gz

secure tmp on openvz container

http://www.faqforge.com/linux/controlpanels/ispconfig2/secure-tmp-and-devshm-directories-in-a-openvz-enviroment/

Create the script:

vi /etc/vz/conf/VPSID.mount

and insert the following lines:

#!/bin/bash mount -n --bind -onosuid,noexec /vz/vps/VPSID/tmp /vz/root/VPSID/tmp mount -n --bind -onosuid,noexec /vz/vps/VPSID/shm /vz/root/VPSID/dev/shm exit ${?}

now make the sscript executable:

chmod 700 /etc/vz/conf/VPSID.mount

create yum local repository

i want fast updates on all dom-U client.

there are solution. create local repository.

http://www.howtoforge.com/creating_a_local_yum_repository_centos

so clever. now i'm updating 17mb kernel headers for each dom-U at full speed.

this is bandwidth savers too.. :)

how to install rpmforge repository

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm

2011-04-12 12:01:04 (11.8 KB/s) - `rpmforge-release-0.5.2-2.el5.rf.i386.rpm' saved [12680/12680]

rpm -Uvh rpmforge-release-0.5.2-2.el5.rf.i386.rpm

warning: rpmforge-release-0.5.2-2.el5.rf.i386.rpm: Header V3 DSA signature: NOKEY, key ID 6b8d79e6

Preparing... ########################################### [100%]

1:rpmforge-release ########################################### [100%]

# yum update

rpmforge | 1.1 kB 00:00

rpmforge/primary | 2.2 MB 00:12

rpmforge 10694/10694

Done.

reference: http://www.cyberciti.biz/tips/rhel5-fedora-core-add-new-yum-repository.html

setup mail server on linux

http://mysql-apache-php.com/mailserver.htm

this is good tutorial for beginers. like it.

remotely install centos

http://wiki.centos.org/TipsAndTricks/VncHeadlessInstall

how to secure tmp

Step 1: Securing /tmp
Step 1.1: Backup your fstab file

cp /etc/fstab /etc/fstab.bak

Step 1.2: Creating tmpmnt partition file (Around 1Gb in size)

cd /var
dd if=/dev/zero of=tmpMnt bs=1024 count=1048576

Step 1.3: Format the new partition

mkfs.ext3 -j /var/tmpMnt

Press Y when asked
Step 1.4: Making backup of old /tmp

cp -Rp /tmp /tmp_backup

Step 1.5: Mount the tmp filesystem

mount -o loop,noexec,nosuid,rw /var/tmpMnt /tmp

Step 1.6: Set the right permissions

chmod 0777 /tmp

Step 1.7: Copy the files back to new tmp folder

cp -Rp /tmp_backup/* /tmp/

Step 1.8: Adding new /tmp filesystem to fstab

echo "/var/tmpMnt /tmp ext3 loop,rw,noexec,nosuid,nodev 0 0" >> /etc/fstab

Step 2: No need for 2 tmp filesystems, so we symlink /var/tmp to /tmp

rm -rf /var/tmp/
ln -s /tmp/ /var/tmp

referer: http://www.directadmin.com/forum/showthread.php?t=29807

install csf on cpanel

http://www.mysql-apache-php.com/csf-firewall.htm

install ngnix + php + mysql on windows

i follow this:

http://eksith.wordpress.com/2010/11/07/nginx-php-mysql-windows/

Change Hostname in Centos Cpanel

i want to change hostname for cpanel

this is great how-tos. :)

http://forums.theplanet.com/index.php?showtopic=22882

change user samba password

smbpasswd -a

Create yum repository

http://www.charlescurley.com/yum/repository.html

install vi, vim and components

yum install vim-X11 vim-common vim-enhanced vim-minimal

http://nixcraft.com/linux-software/434-how-install-vim.html

change centos hostname

command

vi /etc/sysconfig/network

edit hostname. enter i to edit

uncompress gz file centos

use this command

gzip -d filename.gz

Configure sendmail : Step by step

Figured out this website:

http://www.computernetworkingnotes.com/rhce_certification/sendmail_server.htm

http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch21_:_Configuring_Linux_Mail_Servers

Store links here for future reference

*Updated: new howto's

http://www.linuxjournal.com/article/5507

cannot make on centos

use this to install all developer tool

yum groupinstall "Development Tools"

Reference : http://stackoverflow.com/questions/171506/make-and-build-utilities-on-centos-rhel

install evms on centos using yum

i'm refering this page

http://75.126.99.220/showthread.php?t=1062710

1) Get and *install rpmforge. http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm

2) "sudo yum update". It'll take a while to add the new repository. It'll probably download some packages, too (30 megs in my case, but only 8 packages from rpmforge).

3) "yum search evms".

4) "sudo yum install evms.i386".

now installing :)

*install rpmforge: rpm -Uvh rpmforge*

LVM create new on centos

http://www.tcpdump.com/kb/os/linux/configuring-lvm/intro.html

just store this url for future reference.

expand lvm partition

i found this tutorial.

http://www.tcpdump.com/kb/os/linux/lvm-resizing-guide/expand.html

this will expand logical volume LVM while system is online. cool !

edit: other tools like webmin also can edit/create LVM correctly. :)