ansible安装（批量执行命令

rpm安装

下载epl源 ：  Download the latest epel-release rpm from:http://dl.fedoraproject.org/pub/epel/6/x86_64

执行 wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
  安装epel-release ：

# rpm -Uvh epel-release*rpm

安装ansible1.9

# yum install ansible1.9
ansible管理服务器（安装ansible的服务器）必须配置免密码登录其他需要管理的主机

各主机执行ssh-keygen生成私钥和公钥，并把所有主机的公钥追加到authorized_keys中，然后分发到ansible管理服务器

修改个主机的主机名，编辑/etc/hosts文件，把所有主机的ip和主机名写进去

[root@node01 .ssh]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.145.111 node01
172.16.145.112 node02
172.16.145.113 node03
172.16.145.114 node04
172.16.145.115 node05

接下来就可以配置 hosts文件了，

[root@node01 .ssh]# cat /etc/ansible/hosts
[hadoop-all]
node[01:05]

[hadoop-master]
node[04:05]

[hadoop-slave]
node[01:03]

[zookeeper-all]
node[01:03]

[hdfs-nn]
node[04:05]

[hdfs-dn]
node[01:03]

[hdfs-jn]
node[01:02]

[yarn-rm]
node[04:05]

[yarn-nm]
node[01:03]

[hive-all]
node[01:05]

[hive-cli]
node[01:05]

[hive-meta]
node[04:05]

[hive-hs2]
node[04:05]

[impala-all]
node[01:05]

[impala-llama]
node[04:05]

[impala-catalog]
node04

[impala-state]
node04

[impala-impalad]
node[01:03]

执行命令测试ansible能否ping通

[root@node01 .ssh]# ansible all -m ping
node03 | success >> {
    "changed": false,
    "ping": "pong"
}

node02 | success >> {
    "changed": false,
    "ping": "pong"
}

node01 | success >> {
    "changed": false,
    "ping": "pong"
}

node05 | success >> {
    "changed": false,
    "ping": "pong"
}

node04 | success >> {
    "changed": false,
    "ping": "pong"
}

执行服务停止重启命令

[root@node01 .ssh]# ansible impala-impalad  -m service -a "name=impala-server state=restarted"
node01 | success >> {
    "changed": true,
    "name": "impala-server",
    "state": "started"
}

node03 | success >> {
    "changed": true,
    "name": "impala-server",
    "state": "started"
}

node02 | success >> {
    "changed": true,
    "name": "impala-server",
    "state": "started"
}

ok,大功告成！