Ansible部署Redis集群

Ansible部署Redis集群

实验环境

Ansible：192.168.1.1（控制端）

Redis4:192.168.1.4（被控端）

生产环境至少需要三台Ansible服务端

实验目的

使用Ansible执行Playbook的方式安装部署Redis集群

实验步骤

第一步

部署安装Ansible，我这里采用之前已经安装好的Ansible，其实也简单，就是yum安装

只需要设置对被控端的免密登录以及配置文件中的被控端即可

免密登录简单，自己做即可，直接来调整Ansible的hosts文件

[root@ansible ~]# vim /etc/ansible/hosts 
添加
[redis]
192.168.1.4
192.168.1.5
192.168.1.6

检测主机之间连通性，全部显示SUCCESS即可

[root@ansible ~]# ansible redis -m ping
192.168.1.4 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    }, 
    "changed": false, 
    "ping": "pong"
}

第二步

编写Playbook剧本，需要将redis包拖到Ansible控制端（192.168.1.1）

[root@ansible ~]# vim redis.yml
- hosts: redis
  remote_user: root
  tasks:
    - unarchive: src=/root/redis-4.0.6.tar.gz dest=/usr/src
    - copy: src=/usr/src/redis-4.0.6 dest=/usr/local/ remote_src=yes
    - shell: mv /usr/local/redis-4.0.6 /usr/local/redis
    - shell: make && make install
      args:
        chdir: /usr/local/redis
    - file: path=/usr/local/cluster state=directory
    - file: path=/usr/local/cluster/7000 state=directory
    - file: path=/usr/local/cluster/7001 state=directory
    - file: path=/usr/local/cluster/7002 state=directory
    - file: path=/usr/local/cluster/7003 state=directory
    - file: path=/usr/local/cluster/7004 state=directory
    - file: path=/usr/local/cluster/7005 state=directory
    - copy: src=/usr/local/redis/redis.conf dest=/usr/local/cluster/7000 remote_src=yes
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='port 6379' replace='port 7000'


    - replace: path=/usr/local/cluster/7000/redis.conf regexp='daemonize no' replace='daemonize yes'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='bind 127.0.0.1' replace='bind 192.168.1.4'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='appendonly no' replace='appendonly yes'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='appendfilename "appendonly.aof"' replace='appendfilename "appendonly-7000.aof"'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='# cluster-enabled yes' replace='cluster-enabled yes'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='# cluster-config-file nodes-6379.conf' replace='cluster-config-file nodes-7000.conf'
    - replace: path=/usr/local/cluster/7000/redis.conf regexp='# cluster-node-timeout 15000' replace='cluster-node-timeout 5000'

    - copy: src=/usr/local/cluster/7000/redis.conf dest=/usr/local/cluster/7001/ remote_src=yes
    - copy: src=/usr/local/cluster/7000/redis.conf dest=/usr/local/cluster/7002/ remote_src=yes
    - copy: src=/usr/local/cluster/7000/redis.conf dest=/usr/local/cluster/7003/ remote_src=yes
    - copy: src=/usr/local/cluster/7000/redis.conf dest=/usr/local/cluster/7004/ remote_src=yes
    - copy: src=/usr/local/cluster/7000/redis.conf dest=/usr/local/cluster/7005/ remote_src=yes

    - replace: path=/usr/local/cluster/7001/redis.conf regexp='7000' replace='7001'
    - replace: path=/usr/local/cluster/7002/redis.conf regexp='7000' replace='7002'
    - replace: path=/usr/local/cluster/7003/redis.conf regexp='7000' replace='7003'
    - replace: path=/usr/local/cluster/7004/redis.conf regexp='7000' replace='7004'
    - replace: path=/usr/local/cluster/7005/redis.conf regexp='7000' replace='7005'

    - shell: redis-server /usr/local/cluster/7000/redis.conf
    - shell: redis-server /usr/local/cluster/7001/redis.conf
    - shell: redis-server /usr/local/cluster/7002/redis.conf
    - shell: redis-server /usr/local/cluster/7003/redis.conf
    - shell: redis-server /usr/local/cluster/7004/redis.conf
    - shell: redis-server /usr/local/cluster/7005/redis.conf

    - yum: name=ruby
    - copy: src=/root/redis-3.3.0.gem dest=/root
    - shell: gem install redis-3.3.0.gem

​ 搭建集群因为需要人工操作，所以需要在redis（192.168.1.4）主机进行操作

[root@localhost ~]# cd /usr/local/redis/src/
[root@localhost src]# ./redis-trib.rb create --replicas 1 192.168.1.4:7000 192.168.1.4:7001 192.168.1.4:7002 192.168.1.4:7003 192.168.1.4:7004 192.168.1.4:7005
# 输入yes，集群创建成功
[root@localhost src]# ./redis-trib.rb check 192.168.1.4:7000  # 检测集群状态
[root@localhost src]# ./redis-trib.rb info 192.168.1.4:7000   # 查看集群信息

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