Rhel6-csync配置文档

系统环境: rhel6 x86_64 iptables and selinux disabled

主机:192.168.122.160 server60.example.com

192.168.122.154 server54.example.com

相关网址: rpm.pbone.net

ftp://ftp.gnutls.org/pub/gnutls/libtasn1/libtasn1-2.1.tar.gz

http://www.sqlite.org/sqlite-2.8.17.tar.gz

http://internode.dl.sourceforge.net/sourceforge/librsync/librsync-0.9.7.tar.gz

ftp://ftp.gnu.org/pub/gnu/gnutls/gnutls-2.6.6.tar.bz2

http://oss.linbit.com/csync2/csync2-1.34.tar.gz

http://jaist.dl.sourceforge.net/sourceforge/inotify-tools/inotify-tools-3.13.tar.gz

所需的包:librsync-0.9.7-15.el6.x86_64.rpm
librsync-devel-0.9.7-15.el6.x86_64.rpm sqlite-2.8.17.tar.gz
gnutls-2.6.6.tar.bz2 csync2-1.34.tar.gz

以下步骤在server60和server54上实施:

[root@server60
kernel]# yum install libtasn1-devel make xinetd -y

[root@server60
kernel]# rpm -ivh librsync-0.9.7-15.el6.x86_64.rpm

[root@server60
kernel]# rpm -ivh librsync-devel-0.9.7-15.el6.x86_64.rpm

[root@server60
kernel]# tar zxf sqlite-2.8.17.tar.gz

[root@server60
kernel]# cd sqlite-2.8.17

[root@server60
sqlite-2.8.17]# ./configure

此时会出现如下错误:

(1)configure:
error: no acceptable C compiler found in $PATH

(2)configure:
error: C++ preprocessor "/lib/cpp" fails sanity check

解决方法如下:

(1)[root@server60
sqlite-2.8.17]# yum install gcc -y

(2)[root@server60
sqlite-2.8.17]# yum install gcc-c++ -y

[root@server60
sqlite-2.8.17]# make && make install

[root@server60
sqlite-2.8.17]# ldconfig

[root@server60
kernel]# tar jxf gnutls-2.6.6.tar.bz2

[root@server60
kernel]# cd gnutls-2.6.6

[root@server60
gnutls-2.6.6]# ./configure

此时会出现如下错误:

(1)***
libgcrypt was not found. You may want to get it from

解决方法如下:

[root@server60
gnutls-2.6.6]# yum install libgcrypt-devel -y

[root@server60
gnutls-2.6.6]# make && make install

[root@server60
kernel]# tar zxf csync2-1.34.tar.gz

[root@server60
kernel]# cd csync2-1.34

[root@server60
csync2-1.34]# yum install byacc flex -y

[root@server60
csync2-1.34]# ./configure

此时会出现如下错误:

(1)configure:
error: gnutls not found; install gnutls, gnutls-openssl and libtasn1
packages for your system or run configure with --disable-gnutls

解决方法如下:

(2)[root@server60
csync2-1.34]# echo /usr/local/lib >> /etc/ld.so.conf

[root@server60 csync2-1.34]# ldconfig

[root@server60
csync2-1.34]# make && make install

以下步骤在server60上实施:

[root@server60
csync2-1.34]# make cert

[root@server60
csync2-1.34]# csync2 -k /etc/csync2.key
(server54不用重新创建key,并且生成key时需要不断地移动鼠标或敲击键盘)

[root@server60
csync2-1.34]# vim /etc/csync2.cfg

group mygroup

{

host
server60.example.com server54.example.com; (每台主机完整主机名)

#
host host4@host4-eth2;

#

key /etc/csync2.key;

#

include /opt/csync2; (同步目录)

#
include %homedir%/bob;

#
exclude %homedir%/bob/temp;

#
exclude *~ .*;

#

#
action

#
{

#
pattern /etc/apache/httpd.conf;

#
pattern /etc/apache/sites-available/*;

#
exec "/usr/sbin/apache2ctl graceful";

#
logfile "/var/log/csync2_action.log";

#
do-local;

#
}

#

#
backup-directory /var/backups/csync2;
(防错备份目录，根据自己的需求设置，每台主机上都要有)

#
backup-generations 3;

#

auto
younger; (同步以最新的文件为标准更新)

}

[root@server60
~]# scp /etc/csync2* root@192.168.122.154:/etc/

[root@server60
~]# cd /etc/xinetd.d/

[root@server60
xinetd.d]# cp rsync csync2

[root@server60
xinetd.d]# vim csync2

service
csync2

{

disable
= no

protocol
= tcp

flags
= REUSE

socket_type =
stream

wait = no

user =
root

server
= /usr/local/sbin/csync2

server_args
= -i

}

[root@server60
xinetd.d]# vim /etc/services

csync2
30865/tcp

[root@server60
xinetd.d]# scp /etc/xinetd.d/csync2
root@192.168.122.154:/etc/xinetd.d/

[root@server60
xinetd.d]# scp /etc/services root@192.168.122.154:/etc/

以下步骤在server60和server54上实施:

[root@server60
~]# mkdir /opt/csync2

[root@server60
xinetd.d]# /etc/init.d/xinetd start

[root@server60
xinetd.d]# netstat -antple

tcp
0 0 :::30865 :::*
LISTEN 0 28973 24162/xinetd

端口说明启动成功.

测试同步是否正常:

注：所有机子上要有所有主机的解析

在两台机器中的任一台创建或者删除一个文件,然后查看其它机器是否创建或删除。

如果遇到问题就用csync2
-xv命令手动调试并,根据错误信息作调整。

注:csync2相关命令介绍

csync2
-vvv -T 测试csync配置是否正确,可以看到相关SQL执行过程.

csync2
-xv 执行同步命令

csync2
-xvvv 执行同步命令,并显示出详细的信息.

应该注意的问题.

缓存相关的目录尽量不要用csync2去处理,这个程序目录尽量交给NFS处理.