Weibullguy at 16:01, 23 September 2008

2008-09-23T16:01:44Z

← Older revision		Revision as of 09:01, 23 September 2008
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	\|is a utility to compare host synchronization.		\|is a utility to compare host synchronization.
	\|}		\|}

			[[Category:Clusters_Grids]]

Weibullguy at 23:21, 1 December 2007

2007-12-01T23:21:48Z

← Older revision		Revision as of 16:21, 1 December 2007
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	Compile the package:		Compile the package:

	./configure --prefix=/usr &&		./configure --prefix=/usr --sysconfdir=/etc/csync2 &&
	make		make

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	Compile the package:		Compile the package:

	CC="gcc ${BUILD32}" ./configure --prefix=/usr &&		CC="gcc ${BUILD32}" ./configure --prefix=/usr --sysconfdir=/etc/csync2 &&
	make		make

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	CC="gcc ${BUILDN32}" ./configure --prefix=/usr \		CC="gcc ${BUILDN32}" ./configure --prefix=/usr \
	--libdir=/usr/lib32 &&		--libdir=/usr/lib32 --sysconfdir=/etc/csync2 &&
	make		make

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	CC="gcc ${BUILD64}" ./configure --prefix=/usr \		CC="gcc ${BUILD64}" ./configure --prefix=/usr \
	--libdir=/usr/lib64 &&		--libdir=/usr/lib64 --sysconfdir=/etc/csync2 &&
	make		make

Weibullguy: Added page

2007-12-01T23:17:28Z

Added page

New page

{|style="text-align: left; background-color: AliceBlue;"
|-
!Download Source:
|http://oss.linbit.com/csync2/csync2-{{Csync2-Version}}.tar.gz
|}

----

{{Package-Introduction|Csync2 is a cluster synchronization tool. It can be used to keep files on multiple hosts in a cluster in sync. Csync2 can handle complex setups with much more than just 2 hosts, file deletions, and conflicts.|http://oss.linbit.com/csync2/}}

== Dependencies ==

=== Required ===
* [[OpenSSL]]
* [[librsync]]
* [[SQLite]]

=== Recommended ===
* [[GnuTLS]]

== Configuration Information ==

{|style="text-align: left;"
|-
|<i>--disable-gnutls</i>: Build without gnutls support.
|}

== Non-Multilib ==

Compile the package:

./configure --prefix=/usr &&
make

Install the package:

make install

== Multilib ==

=== 32Bit ===

Compile the package:

CC="gcc ${BUILD32}" ./configure --prefix=/usr &&
make

Install the package:

make install

=== N32 ===

Compile the package:

CC="gcc ${BUILDN32}" ./configure --prefix=/usr \
--libdir=/usr/lib32 &&
make

Install the package:

make install

=== 64Bit ===

Compile the package:

CC="gcc ${BUILD64}" ./configure --prefix=/usr \
--libdir=/usr/lib64 &&
make

Install the package:

make install

== Configuring ==

Create a key to share among the nodes of your cluster. Copy this key to each node running csync2.

csync2 -k <keyname>.key

The file /etc/csync2/csync2.cfg is used to setup the behavior of csync2 on your cluster. A sample csync2.cfg is installed, but you should read the documentation at http://oss.linbit.com/csync2/paper.pdf for details.

Assuming you have three nodes with hostnames of aragorn, legolas, and frodo, the following is an example of the csync2.cfg file.

# Keep aragorn and legolas in sync.
# frodo and legolas only receive changes.
# aragorn sends changes to the other two hosts.
# You can have multiple groups in one cfg file.
group aragorn_legolas
{
host aragorn;
host (frodo);
host (legolas);

key /etc/clusterfsck.key;

# Configuration files to keep synchronized.
include /etc/csync2/csync2.cfg;
include /etc/vimrc;
include /etc/colors;
include /etc/logrotate.conf;

# Executables (scripts) to keep synchronized.
include /usr/sbin/LinkCheck;

# Directories to keep synchronized.
include /shared_stuff/;
include %homedir%/weibullguy;

# Excluded items.
exclude *~ .*;
exclude /shared_stuff/;

# What action to take when the csync2.cfg file is synced.
# Execute the mailer script to send me an e-mail.
# Log this action in the csync2 log file.
action
{
pattern /etc/csync2/csync2.cfg;
exec "/etc/csync2/mailer";
logfile "/var/log/csync2_action.log";
do-local;
}

# Create backups.
# backup-directory /var/backups/csync2;
# backup-generations 3;

auto none;
}

# The homedir variable on frodo and legolas (hosts 2 and 3)
# is different than it is on all other hosts (only aragorn in this case).
prefix homedir
{
on host[23]: /home/users;
on *: /home;
}

Add the following as a cron job to keep all the node in sync.

# Synchronize cluster nodes every day at 12:30 am.
30 00 * * * /usr/sbin/csync2 -x -r

== Contents ==

{| style="text-align: left;"
|-valign="top"
!Installed Directories:
|/etc/csync2, /var/lib/csync2
|-valign="top"
!Installed Programs:
|csync2, csync2-compare
|-valign="top"
!Installed Libraries:
|None
|}

=== Short Descriptions ===

{| style="text-align: left;"
|-valign="top"
!csync2
|is a cluster synchronization tool.
|-valign="top"
!csync2-compare
|is a utility to compare host synchronization.
|}

Csync2 - Revision history

Weibullguy at 16:01, 23 September 2008

Weibullguy at 23:21, 1 December 2007

Weibullguy: Added page