shell脚本和ansible实践MariaDB源码编译自动安装
在前面的博客中已经演示，通过脚本实现MySQL通用二进制的安装，下面通过演示用脚本实现源码编译MariaDB实现自动化，在大规模部署多台MariaDB时，这里使用ansible来实现其自动化部署，可以大大简化运维工程师的时间。先讲解脚本在本地自动化安装MariaDB，结合上一篇博客和前面自动化实现的MySQL通用二进制格式的安装。
环境：Centos 6.6 mariadb-10.0.13.tar.gz node5（hostname） 2块硬盘：1块是系统用、1块是作为MySQL数据盘
查看卷组信息
# vgs
VG #PV #LV #SN Attr VSizeVFree
vg_lvm 1 2 0 wz--n- 98.30g 68.30g
# vgs | awk '{if(NR==2) {print $1}}'把卷组名切分出来
vg_lvm
扩容卷组
# vgextend vg_lvm /dev/sdb
Volume group "vg_lvm" successfully extended
# vgs
VG #PV #LV #SN Attr VSize VFree
vg_lvm 2 2 0 wz--n- 118.30g 88.30g
# vgreduce $(vgs | awk '{if(NR==2) {print $1}}') /dev/sdb
Removed "/dev/sdb" from volume group "vg_lvm"
# lvcreate -L 18G -n data vg_lvm /dev/sdb
Logical volume "data" created
# chmod +x mysql.sh给定其权限
# vim mysql.sh 脚本内容如下：
#!/bin/bash
useradd -r -s /sbin/nologin mysql > /dev/null
vgextend $(vgs|awk '{if(NR==2) {print $1}}') /dev/sdb > /dev/null
lvcreate -L 18G -n data vg_lvm /dev/sdb > /dev/null
mkdir /mysql
mkfs.ext4 /dev/vg_lvm/data > /dev/null
mount /dev/vg_lvm/data /mysql
mkdir /mysql/data
chown -R mysql.mysql /mysql/data
tar -xf /usr/local/src/mariadb-10.0.13.tar.gz -C /usr/local/
yum groupinstall -y "Development tools" "Server Platform Development" > /dev/null
echo -e "\033[42mGroupinstall is OK.\033[0m"
yum install -y libxml2-devel cmake > /dev/null
echo -e "\033[42mInstall is OK.\033[0m"
cd /usr/local/mariadb-10.0.13/
cmake . -DMYSQL_DATADIR=/mysql/data -DWITH_SSL=system -DWITH_SPHINX_STORAGE_ENGINE=1 > /dev/null
echo -e "\033[42mCmake is OK.\033[0m"
make && make install > /dev/null
echo -e "\033[42mMake and Make install is OK.\033[0m"
cd /usr/local/mysql
echo "export PATH=/usr/local/mysql/bin:$PATH" > /etc/profile.d/mysql.sh
source /etc/profile.d/mysql.sh
cp -f support-files/my-large.cnf /etc/my.cnf
sed -i '/^\/a datadir=/mysql/data' /etc/my.cnf
cp /usr/local/mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld
chmod +x /etc/rc.d/init.d/mysqld
chkconfig --add mysqld
chkconfig mysqld on
chown -R root.mysql /usr/local/mysql/*
/usr/local/mysql/scripts/mysql_install_db --user=mysql --datadir=/mysql/data > /dev/null
echo -e "033[42mMysql initial is ok.\033[0m"
service mysqld start
ss -tnlp|grep 3306
# ./mysql.sh执行脚本
.....
1504105:52:01 InnoDB: Starting shutdown...
1504105:52:03 InnoDB: Shutdown completed; log sequence number 1616707
033[42mMysql initial is ok.初始化完成
Starting MySQL. SUCCESS! 启动ok
LISTEN 0 128 :::3306 :::* users:(("mysqld",39585,21))发现监听在3306端口了，说明自动化一切都ok
MariaDB源码编译进行配置时，可以根据业务需求功能，定制其功能，通过命令行给其传递一个配置参数或者是通过在mysql.sh文件包含配置参数所在的文件，下次要使用另外功能时，直接修改另外一个文件的参数即可。在执行mysql.sh时，为了执行一切ok，也可以先在主机上安装好screen软件，通过screen命令来安全执行制动化脚本。
下面是使用ansible实现自动化编译安装MariaDB
hosts /etc/ansible/hosts文件内容
IP 或者是 HOSTNAME
IP 或者是 HOSTNAME
IP 或者是 HOSTNAME
。。。
args.sh 作为MariaDB 参数的文件，可以根据需求改动即可
#!/bin/bash
mariadb="-DMYSQL_DATADIR=/mysql/data -DWITH_SSL=system -DWITH_SPHINX_STORAGE_ENGINE=1"
mysql.sh
#!/bin/bash
source /root/args.sh
useradd -r -s /sbin/nologin mysql > /dev/null
vgextend $(vgs|awk '{if(NR==2) {print $1}}') /dev/sdb > /dev/null
lvcreate -L 18G -n data vg_lvm /dev/sdb > /dev/null
mkdir /mysql
mkfs.ext4 /dev/vg_lvm/data > /dev/null
mount /dev/vg_lvm/data /mysql
mkdir /mysql/data
chown -R mysql.mysql /mysql/data
yum groupinstall -y "Development tools" "Server Platform Development" > /dev/null
echo -e "\033[42mGroupinstall is OK.\033[0m"
yum install -y libxml2-devel cmake > /dev/null
echo -e "\033[42mInstall is OK.\033[0m"
cd /usr/local/mariadb-10.0.13/
cmake .$(mariadbarg) > /dev/null
echo -e "\033[42mCmake is OK.\033[0m"
make && make install > /dev/null
echo -e "\033[42mMake and Make install is OK.\033[0m"
cd /usr/local/mysql
echo "export PATH=/usr/local/mysql/bin:$PATH" > /etc/profile.d/mysql.sh
source /etc/profile.d/mysql.sh
cp -f support-files/my-large.cnf /etc/my.cnf
sed -i '/^\/a datadir=/mysql/data' /etc/my.cnf
cp /usr/local/mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld
chmod +x /etc/rc.d/init.d/mysqld
chkconfig --add mysqld
chkconfig mysqld on
chown -R root.mysql /usr/local/mysql/*
/usr/local/mysql/scripts/mysql_install_db --user=mysql --datadir=/mysql/data > /dev/null
echo -e "033[42mMysql initial is ok.\033[0m"
service mysqld start
ss -tnlp|grep 3306
mysql.yml playbook文件内容如下： unarchive模块是复制和解压文件的，script是把当前shell脚本到远程主机上执行
---
#file: mysql.yml
- hosts: dbserver
remote_user: root
tasks:
- name: remote copy decompress
unarchive: src=/usr/local/src/mariadb-10.0.13.tar.gz dest dest=/usr/local/ copy=yes
- name: execute mariadb install script
script: /root/mysql.sql
unarchive: src=/usr/local/src/mariadb-10.0.13.tar.gz dest dest=/usr/local/ copy=yes意思是：复制本地文件/usr/local/src/mariadb-10.0.13.tar.gz到远程解压缩到/usr/local目录下。
ok，到这里就已经全部ok了，如果实验中有说什么疑问，欢迎一起讨论
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