运维自动化之ansible playbook一键化安装redis主从
自动化是趋势，随着云平台的发展，也会逐渐的更火爆，以前手动安装软件、或者脚本安装的话，会被一键式自动化给逐步代替，上次介绍了运维自动化之ansible playbook一键化安装mysql主从（地址http://dl528888.blog.51cto.com/2382721/1617692），这次给大家介绍如何使用ansible来一键化安装redis主从。
本次还是使用docker虚拟2个测试环境，下面是环境介绍
一、各软件版本
1、docker软件版本
[root@docker-test3 ~]# docker version Client version: 1.5.0 Client API version: 1.17 Go version (client): go1.4.1 Git commit (client): a8a31ef OS/Arch (client): linux/amd64 Server version: 1.5.0 Server API version: 1.17 Go version (server): go1.4.1 Git commit (server): a8a31ef
2、docker存储
[root@docker-test3 ~]# docker info Containers: 2 Images: 20 Storage Driver: devicemapper Pool Name: docker-253:1-1430610-pool Pool Blocksize: 65.54 kB Backing Filesystem:Data file: /dev/loop0 Metadata file: /dev/loop1 Data Space Used: 2.614 GB Data Space Total: 107.4 GB Metadata Space Used: 3.105 MB Metadata Space Total: 2.147 GB Udev Sync Supported: false Data loop file: /var/lib/docker/devicemapper/devicemapper/data Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata Library Version: 1.02.82-git (2013-10-04) Execution Driver: native-0.2 Kernel Version: 3.18.3-1.el7.elrepo.x86_64 Operating System: CentOS Linux 7 (Core) CPUs: 16 Total Memory: 31.41 GiB Name: docker-test3 ID: 52R3:7K2Q:EADX:MXSC:BZ4I:NMC2:WUBX:4IV7:GUBQ:NIHH:TGDL:LLRW
3、ansible版本
[root@puppet ansible-examples]# ansible --version ansible 1.7
4、docker虚拟容器信息
5、redis版本
2.6.17
6、docker容器情况
[root@docker-test3 ~]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 18a34f7944c7 docker.ops-chukong.com:5000/centos6-http:new "/usr/bin/supervisor 25 minutes ago Up 25 minutes redis-slave 6388c15147d9 docker.ops-chukong.com:5000/centos6-http:new "/usr/bin/supervisor 26 minutes ago Up 26 minutes redis-master
可以看到容器启动正常
二、ansible playbook部署
1、添加路由
在ansible里添加一条到这个主机的路由，方便直接ansible对容器的ip进行部署mysql
[root@puppet ansible]# route add -net 172.16.0.0 netmask 255.255.0.0 gw 10.10.17.3 ping那2个容器ip [root@puppet ansible]# ping -c 2 172.16.1.57 PING 172.16.1.57 (172.16.1.57) 56(84) bytes of data. 64 bytes from 172.16.1.57: icmp_seq=1 ttl=63 time=0.846 ms 64 bytes from 172.16.1.57: icmp_seq=2 ttl=63 time=0.121 ms --- 172.16.1.57 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.121/0.483/0.846/0.363 ms You have mail in /var/spool/mail/root [root@puppet ansible]# ping -c 2 172.16.1.58 PING 172.16.1.58 (172.16.1.58) 56(84) bytes of data. 64 bytes from 172.16.1.58: icmp_seq=1 ttl=63 time=0.672 ms 64 bytes from 172.16.1.58: icmp_seq=2 ttl=63 time=0.111 ms --- 172.16.1.58 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.111/0.391/0.672/0.281 ms
可以看到通了，把这2个ip放到ansible的hosts里
2、添加hosts
[root@puppet ansible]# tail -n3 /etc/ansible/hosts [container_redis] 172.16.1.57:22 172.16.1.58:22
3、使用ansible部署redis
A、部署redis master，在redis-master里部署，下面是命令
time ansible-playbook redis_install.yml --extra-vars "host=172.16.1.57 user=root" -k
下面是开始部署
[root@puppet ansible]# time ansible-playbook redis_install.yml --extra-vars "host=172.16.1.57 user=root" -k
SSH password:
PLAY [172.16.1.57] ************************************************************
GATHERING FACTS ***************************************************************
ok: [172.16.1.57]
TASK: [common | Install initializtion require software] ***********************
changed: [172.16.1.57]
TASK: [redis_install | Copy Redis Software To Redhat Client] ******************
changed: [172.16.1.57]
TASK: [redis_install | Create Redis Install Dir] ******************************
ok: [172.16.1.57]
TASK: [redis_install | Uncompression Redis Software To Redhat Client] *********
changed: [172.16.1.57]
TASK: [redis_install | Copy Redis Config To Redhat Client] ********************
changed: [172.16.1.57]
TASK: [redis_install | Create Soft Link In Redhat Client] *********************
changed: [172.16.1.57] => (item=redis-cli)
changed: [172.16.1.57] => (item=redis-server)
TASK: [redis_install | Check Boot Start In Redhat Client] *********************
failed: [172.16.1.57] => {"changed": true, "cmd": "grep -c '/usr/bin/redis-server /data/redis-2.6.17/conf/redis_6379.conf' /etc/rc.local", "delta": "0:00:00.240436", "end": "2015-03-27 09:25:42.110919", "rc": 1, "start": "2015-03-27 09:25:41.870483"}
stdout: 0
...ignoring
TASK: [redis_install | Add Boot Start In Redhat Client] ***********************
changed: [172.16.1.57]
TASK: [redis_install | Start Redis Service In Redhat Client] ******************
changed: [172.16.1.57]
TASK: [redis_install | Delete Redis compression Software In Redhat Client] ****
changed: [172.16.1.57]
PLAY RECAP ********************************************************************
172.16.1.57 : ok=11 changed=9 unreachable=0 failed=0
real 1m51.933s
user 0m7.517s
sys 0m0.505s
可以看到2分钟之内部署完成，最浪费时间的是yum安装基础库，想提速可以预先安装基础yum库
现在去redis-master里查看
[root@puppet ansible]# ssh 172.16.1.57 [email protected]'s password: Last login: Mon Nov 17 14:10:39 2014 from 172.17.42.1 root@6388c15147d9:~ 09:28:39 # netstat -tlnp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 172.16.1.57:6379 0.0.0.0:* LISTEN 412/redis-server tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 266/sshd tcp 0 0 :::80 :::* LISTEN 13/httpd tcp 0 0 :::22 :::* LISTEN 266/sshd root@6388c15147d9:~ 09:28:41 # ps -ef|grep redis root 412 1 0 09:25 ? 00:00:00 /usr/bin/redis-server /data/redis-2.6.17/conf/redis_6379.conf root 443 428 0 09:28 pts/0 00:00:00 grep redis root@6388c15147d9:~ 09:28:43 # redis-cli -h 172.16.1.57 -p 6379 redis 172.16.1.57:6379> keys * (empty list or set) redis 172.16.1.57:6379> set abc 1 OK redis 172.16.1.57:6379> set test a OK redis 172.16.1.57:6379> get abc "1" redis 172.16.1.57:6379> get test "a" redis 172.16.1.57:6379>
可以看到redis安装正常，并且我添加了2个key，等部署slave后再查看是否同步这2个key。
B、部署从库
在redis-slave节点部署，命令是
time ansible-playbook redis_slave_install.yml --extra-vars "host=172.16.1.58 user=root redis_master_ip=172.16.1.57 redis_master_port=6379" -k
其中redis_master_ip是redis主的ip，redis_master_port是redis主中redis的端口。
下面开始部署
[root@puppet ansible]# time ansible-playbook redis_slave_install.yml --extra-vars "host=172.16.1.58 user=root redis_master_ip=172.16.1.57 redis_master_port=6379" -k
SSH password:
PLAY [172.16.1.58] ************************************************************
GATHERING FACTS ***************************************************************
ok: [172.16.1.58]
TASK: [common | Install initializtion require software] ***********************
changed: [172.16.1.58]
TASK: [redis_slave_install | Copy Redis Software To Redhat Client] ************
changed: [172.16.1.58]
TASK: [redis_slave_install | Create Redis Install Dir] ************************
ok: [172.16.1.58]
TASK: [redis_slave_install | Uncompression Redis Software To Redhat Client] ***
changed: [172.16.1.58]
TASK: [redis_slave_install | Copy Redis Config To Redhat Client] **************
changed: [172.16.1.58]
TASK: [redis_slave_install | Create Soft Link In Redhat Client] ***************
changed: [172.16.1.58] => (item=redis-cli)
changed: [172.16.1.58] => (item=redis-server)
TASK: [redis_slave_install | Check Boot Start In Redhat Client] ***************
failed: [172.16.1.58] => {"changed": true, "cmd": "grep -c '/usr/bin/redis-server /data/redis-2.6.17/conf/redis_6379.conf' /etc/rc.local", "delta": "0:00:00.238492", "end": "2015-03-27 09:28:16.316417", "rc": 1, "start": "2015-03-27 09:28:16.077925"}
stdout: 0
...ignoring
TASK: [redis_slave_install | Add Boot Start In Redhat Client] *****************
changed: [172.16.1.58]
TASK: [redis_slave_install | Start Redis Service In Redhat Client] ************
changed: [172.16.1.58]
TASK: [redis_slave_install | Delete Redis compression Software In Redhat Client] ***
changed: [172.16.1.58]
PLAY RECAP ********************************************************************
172.16.1.58 : ok=11 changed=9 unreachable=0 failed=0
real 1m52.635s
user 0m7.409s
sys 0m0.495s
下面开始测试
[root@puppet ansible]# ssh 172.16.1.58 [email protected]'s password: Last login: Mon Nov 17 14:10:39 2014 from 172.17.42.1 root@18a34f7944c7:~ 09:29:46 # netstat -tlnp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 266/sshd tcp 0 0 172.16.1.58:6379 0.0.0.0:* LISTEN 412/redis-server tcp 0 0 :::22 :::* LISTEN 266/sshd tcp 0 0 :::80 :::* LISTEN 13/httpd root@18a34f7944c7:~ 09:29:48 # redis-cli -h 172.16.1.58 -p 6379 redis 172.16.1.58:6379> exit root@18a34f7944c7:~ 09:30:01 # redis-cli -h 172.16.1.58 -p 6379 redis 172.16.1.58:6379> keys * 1) "test" 2) "abc" redis 172.16.1.58:6379> get test "a" redis 172.16.1.58:6379> get abc "1" redis 172.16.1.58:6379>
可以看到redis slave里redis安装完成，并且跟redis master里的redis做了主从，之前的2个key也都能查看。
三、ansible模块地址
地址是
https://github.com/dl528888/ansible-examples/tree/master/redis_master_slave_install_2.6.17
有问题大家留言