ansible 使用主机IP批量修改机器名

为什么80%的码农都做不了架构师？>>>

1.首先看看我的hosts配置

root@jastme:/etc/ansible/playbooks# more ../hosts
[test]
192.168.32.131 ansible_connection=local
[test1]
192.168.32.133 ansible_ssh_pass=123
[test2]
192.168.32.132 ansible_ssh_pass=123
[testall]
192.168.32.132 ansible_ssh_pass=123
192.168.32.133 ansible_ssh_pass=123

2.看看2台主机的原始机器名

主机1
[root@ZooKeeper-01 ~]# hostname
ZooKeeper-01
[root@ZooKeeper-01 ~]# ifconfig eth2
eth2      Link encap:Ethernet  HWaddr 00:0C:29:58:95:55  inet addr:192.168.32.132  Bcast:192.168.32.255  Mask:255.255.255.0UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1RX packets:39614 errors:0 dropped:0 overruns:0 frame:0TX packets:18265 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000 RX bytes:5279094 (5.0 MiB)  TX bytes:1110521 (1.0 MiB)主机2
[root@ZooKeeper-02 ~]# hostname
ZooKeeper-02
[root@ZooKeeper-02 ~]# ifconfig eth2
eth2      Link encap:Ethernet  HWaddr 00:0C:29:C8:7F:48  inet addr:192.168.32.133  Bcast:192.168.32.255  Mask:255.255.255.0UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1RX packets:41538 errors:0 dropped:0 overruns:0 frame:0TX packets:20085 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000 RX bytes:6164131 (5.8 MiB)  TX bytes:1729825 (1.6 MiB)

3. 目标

我们需要需要改这两台机器的主机名，按照他们自己的IP修改类似 web132 web133

4. playbook

root@jastme:/etc/ansible/playbooks# more changehostname.yml
- hosts : testallremote_user : roottasks :- name : show hostnameshell : hostname- name : show ipcommand : ip a- hostname : name=web{{ ansible_default_ipv4.address.split('.')[-1] }}                         #直接调用res字典，引用成变量

5.执行一下，看看结果

root@jastme:/etc/ansible/playbooks# ansible-playbook changehostname.yml             PLAY [testall] **************************************************************** GATHERING FACTS ***************************************************************
ok: [192.168.32.133]                                                                                               #IP
{'module_name': 'setup', 'module_complex_args': {}, 'module_args': ''}
ok: [192.168.32.132]
{'module_name': 'setup', 'module_complex_args': {}, 'module_args': ''}TASK: [show hostname] *********************************************************
changed: [192.168.32.133]
ZooKeeper-02                                                                                                        #主机名
{'module_name': u'shell', 'module_complex_args': {}, 'module_args': u'hostname'}
changed: [192.168.32.132]
ZooKeeper-01
{'module_name': u'shell', 'module_complex_args': {}, 'module_args': u'hostname'}TASK: [show ip] ***************************************************************
changed: [192.168.32.133]
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000link/ether 00:0c:29:c8:7f:34 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000link/ether 00:0c:29:c8:7f:3e brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000link/ether 00:0c:29:c8:7f:48 brd ff:ff:ff:ff:ff:ffinet 192.168.32.133/24 brd 192.168.32.255 scope global eth2
5: eth3: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000link/ether 00:0c:29:c8:7f:34 brd ff:ff:ff:ff:ff:ff
6: eth4: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000link/ether 00:0c:29:c8:7f:3e brd ff:ff:ff:ff:ff:ff
7: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue link/ether 00:0c:29:c8:7f:34 brd ff:ff:ff:ff:ff:ffinet 144.148.64.230/24 brd 144.148.64.255 scope global bond0inet 144.148.64.231/32 brd 144.148.64.231 scope global bond0:0
8: bond1: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue link/ether 00:0c:29:c8:7f:3e brd ff:ff:ff:ff:ff:ffinet 10.25.17.82/24 brd 10.25.17.255 scope global bond1inet 10.25.17.83/32 brd 10.25.17.83 scope global bond1:0
{'module_name': u'command', 'module_complex_args': {}, 'module_args': u'ip a'}
changed: [192.168.32.132]
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000link/ether 00:0c:29:58:95:41 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000link/ether 00:0c:29:58:95:4b brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000link/ether 00:0c:29:58:95:55 brd ff:ff:ff:ff:ff:ffinet 192.168.32.132/24 brd 192.168.32.255 scope global eth2
5: eth3: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000link/ether 00:0c:29:58:95:41 brd ff:ff:ff:ff:ff:ff
6: eth4: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000link/ether 00:0c:29:58:95:4b brd ff:ff:ff:ff:ff:ff
7: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue link/ether 00:0c:29:58:95:41 brd ff:ff:ff:ff:ff:ffinet 144.148.64.229/24 brd 144.148.64.255 scope global bond0
8: bond1: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue link/ether 00:0c:29:58:95:4b brd ff:ff:ff:ff:ff:ffinet 10.25.17.81/24 brd 10.25.17.255 scope global bond1
{'module_name': u'command', 'module_complex_args': {}, 'module_args': u'ip a'}TASK: [hostname name=web{{ ansible_default_ipv4.address.split('.')[-1] }}] ****
changed: [192.168.32.133]
{'module_name': u'hostname', 'module_complex_args': {}, 'module_args': u'name=web133'}                                      #这里就是我们需要的操作  可以看见主机名已经被修改成功
changed: [192.168.32.132]
{'module_name': u'hostname', 'module_complex_args': {}, 'module_args': u'name=web132'}PLAY RECAP ********************************************************************
192.168.32.132             : ok=4    changed=3    unreachable=0    failed=0
192.168.32.133             : ok=4    changed=3    unreachable=0    failed=0

6. 验证

[root@ZooKeeper-01 ~]# hostname
web132[root@ZooKeeper-02 ~]# hostname
web133

验证修改成功。。。

转载于:https://my.oschina.net/jastme/blog/510707

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