上次简单介绍了利用puppet批量安装java的案例，这次来说说puppet自动化安装mysql。前提是配置好了puppet的服务端和客户端，puppet安装配置参考blog http://space.itpub.net/27181165/viewspace-776318/.

mysql模块

[root@master manifests]# tree /etc/puppet/modules/mysql/manifests/

/etc/puppet/modules/mysql/manifests/

|-- add_user.pp

|-- init.pp

`-- install.pp

0 directories, 3 files

在mysql模块的manifests中新建几个文件，add_user.pp创建mysql用户，init.pp puppet初始化文件，install.pp mysql安装文件，各个文件具体配置如下

初始化文件

[root@master manifests]# cat init.pp

class mysql {

include mysql::add_user

include mysql::install

}

init.pp是每个puppet模块的必需的初始化文件。包含有模块中定义的各个类。

[root@master manifests]# cat add_user.pp

class mysql::add_user {

group {"mysql":

ensure => "present",

gid => 501,

name => "mysql";

}

user {"mysql":

ensure => "present",

uid =>501,

gid =>501,

home => "/home/mysql",

managehome=> "true";

}

file {"/home/mysql":

owner => 501,

group => 501,

mode => 700,

ensure => directory;

}

}

在add_user.pp中，我创建了一个mysql组，组名为mysql,gid为501。创建了一个mysql用户，指定了uid,gid及mysql的家目录，用file资源给mysql家目录赋予一定的权限。

[root@master manifests]# cat install.pp

class mysql::install {

file { "/usr/local/src/mysql-5.1.62.tar.gz":

owner =>root,

group =>root,

mode =>644,

source =>"puppet://$puppetserver/files/mysql-5.1.62.tar.gz",

}

file { "/usr/local/src/myinstall.sh":

owner =>root,

group =>root,

mode =>755,

source =>"puppet://$puppetserver/files/myinstall.sh",

require => File["/usr/local/src/mysql-5.1.62.tar.gz"],

}

exec {"build_mysql":

cwd =>"/usr/local/src",

path =>"/bin:/usr/bin:/sbin:/usr/bin",

creates => "/usr/local/mysql",

command =>"/bin/sh /usr/local/src/myinstall.sh",

timeout => "0",

require => File["/usr/local/src/myinstall.sh"],

}

}

install.pp文件是用来安装mysql的，其中定义了2个file资源，一个是从puppet服务端取mysql安装包的，另一个是取mysql安装脚本的。exec是执行mysql安装脚本安装mysql。我把所有获取到的文件都放在/usr/local/src下。myinstall.sh是依赖于/usr/local/src/mysql-5.1.62.tar.gz的，因为，只有mysql-5.1.62.tar.gz文件存在，myinstall.sh才有存在的意义。exec资源中，用creates判断如果存在/usr/local/mysql说明mysql已经安装过了，无需执行exec。安装mysql的过程可能需要一些时间，因此在exec中设定了一个timeout超时时间，timeout=0表示时间不做限制。同样的exec是依赖于myinstall.sh这个文件的。

mysql安装脚本

mysql安装脚本放在puppet的文件资源库中，方便客户端获取

[root@master files]# cat /etc/puppet/files/myinstall.sh

#!/bin/bash

#Author: Andy

#Time: 20130905

#File:/etc/puppet/files/myinstall.sh

FILE_PATH=/usr/local/src

GROUP=mysql

USER=mysql

PORT=3306

VERSION=5.1.62

MYSQL_BASE=/usr/local/mysql

DATA_HOME=/var/lib/mysql

function add_user ()

{

cat /etc/group|grep "${GROUP}"

if [ $? -ne 0 ];then

echo "mysql group is not exist,create" >/tmp/mysqlinstall

/usr/sbin/groupadd -g 501 ${GROUP}

if [ $? -eq 0 ];then

echo "mysql group is created" >>/tmp/mysqlinstall

fi

else

echo "mysql group is exist">> /tmp/mysqlinstall

fi

id mysql >/dev/null 2>&1

if [ $? -ne 0 ];then

echo "the user mysql is not exist,create" >>/tmp/mysqlinstall

/usr/sbin/useradd -u 501 -g ${GROUP} ${USER}

if [ $? -eq 0 ];then

echo "user mysql is created" >>/tmp/mysqlinstall

fi

else

echo "mysql user is exist" >>/tmp/mysqlinstall

fi

}

function uncomp_tar ()

{

ls `pwd` |grep -w ^mysql-5.1.62$

if [ $? -ne 0 ];then

echo "uncompress mysql target package" >/tmp/mysqlinstall

tar -zxvf mysql-${VERSION}.tar.gz

echo "uncompress target package successful">>/tmp/mysqlinstall

sleep 5

fi

}

function configure()

{

echo "mysql configure" >>/tmp/mysqlinstall

cd ${FILE_PATH}/mysql-${VERSION}

sh configure --prefix=${MYSQL_BASE} \

--sysconfdir=/etc \

--localstatedir=${DATA_HOME} \

--with-tcp-port=${PORT} \

--with-unix-socket-path=/tmp/mysqld.sock \

--with-mysqld-user=${USER} \

--with-plugins=innobase,myisam #innobase要求内存大于2GB

echo "mysql configure completed">>/tmp/mysqlinstall

sleep 5

}

function makein()

{

echo "start make">>/tmp/mysqlinstall

cd ${FILE_PATH}/mysql-${VERSION}

make clean

make

echo "make completed">>/tmp/mysqlinstall

sleep 5

echo "start make install">>/tmp/mysqlinstall

make install

echo "make install completed">>/tmp/mysqlinstall

sleep 5

}

function setup()

{

echo "mysql setup" >>/tmp/mysqlinstall

sleep 5

cp ${MYSQL_BASE}/share/mysql/my-innodb-heavy-4G.cnf /etc/my.cnf

sed -i '/storage-engine/ s/MYISAM/INNODB/' /etc/my.cnf

sed -i '/rehash/ s/no-auto-rehash/auto-rehash/' /etc/my.cnf

cp ${MYSQL_BASE}/share/mysql/mysql.server /etc/rc.d/init.d/mysqld

chmod 700 /etc/rc.d/init.d/mysqld

chkconfig --add mysqld

chkconfig mysqld on

chown -R ${USER} ${MYSQL_BASE}

chgrp -R ${GROUP} ${MYSQL_BASE}

echo "mysql setup successful" >>/tmp/mysqlinstall

}

function initial()

{

echo "mysql initail" >>/tmp/mysqlinstall

sleep 5

${MYSQL_BASE}/bin/mysql_install_db --user=mysql

chown -R root ${MYSQL_BASE}

${MYSQL_BASE}/bin/mysqld_safe --user=mysql &

echo "mysql enviroment configure" >>/tmp/mysqlinstall

cat /etc/profile|grep mysql >/dev/null

if [ $? -ne 0 ];then

echo "export PATH=\$PATH:${MYSQL_BASE}/bin" >>/etc/profile

fi

source /etc/profile

echo "mysql install completed" >>/tmp/mysqlinstall

}

#===============================================

add_user

uncomp_tar

configure

makein

setup

initial

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