Ansible 入门 3 (Ansible管理docker的容器)

Submitted by Lizhe on Tue, 06/06/2017 - 14:58

playbook 指的是用于配置管理的脚本, 实际上playbook才是ansible的重头戏

我将尝试使用一个playbook同时控制之前创建的3个虚拟机(docker 容器)

先看一个简单脚本

[root@vagrant playbooks]# vi hostname.yml 
- name: call hostname
  hosts: dockers
  sudo: False
  tasks:
    - name: install
      shell: hostname > /hostname.txt

直接调用

[root@vagrant playbooks]# ansible-playbook hostname.yml 

PLAY [call hostname] ********************************************************** 

GATHERING FACTS *************************************************************** 
ok: [172.17.0.4]
ok: [172.17.0.3]
ok: [172.17.0.2]

TASK: [install] *************************************************************** 
changed: [172.17.0.3]
changed: [172.17.0.4]
changed: [172.17.0.2]

PLAY RECAP ******************************************************************** 
172.17.0.2                 : ok=2    changed=1    unreachable=0    failed=0   
172.17.0.3                 : ok=2    changed=1    unreachable=0    failed=0   
172.17.0.4                 : ok=2    changed=1    unreachable=0    failed=0 

检查一下结果

245

下面是一个安装httpd的脚本

[root@vagrant playbooks]# vi httpd.yml
- name: install httpd from yum
  hosts: dockers
  sudo: False
  tasks:
    - name: install
      shell: yum install httpd
    - name: start httpd
      shell: /usr/sbin/httpd
 

调用 ansible-playbook ./playbooks/httpd.yml

可以看到log中

[root@vagrant log]# tail -500f ansible.log 
2017-06-06 14:55:23,353 p=19632 u=root |  
2017-06-06 14:55:23,354 p=19632 u=root |  /usr/bin/ansible dockers -a hostname
2017-06-06 14:55:23,354 p=19632 u=root |  
2017-06-06 14:55:25,190 p=19632 u=root |  172.17.0.3 | success | rc=0 >>
fd62f7fed827

2017-06-06 14:55:25,195 p=19632 u=root |  172.17.0.2 | success | rc=0 >>
86b87edef2cd

2017-06-06 14:55:25,195 p=19632 u=root |  172.17.0.4 | success | rc=0 >>
7c6125cedfd3

2017-06-06 15:43:02,383 p=21343 u=root |   
2017-06-06 15:43:02,384 p=21343 u=root |  /usr/bin/ansible-playbook ./playbooks/httpd.yml
2017-06-06 15:43:02,384 p=21343 u=root |   
2017-06-06 15:43:02,387 p=21343 u=root |  ERROR: Syntax Error while loading YAML script, ./playbooks/httpd.yml
Note: The error may actually appear before this position: line 6, column 5

    - name: install
    shell: yum install httpd
    ^
2017-06-06 15:45:22,766 p=21408 u=root |   
2017-06-06 15:45:22,766 p=21408 u=root |  /usr/bin/ansible-playbook ./playbooks/httpd.yml
2017-06-06 15:45:22,766 p=21408 u=root |   
2017-06-06 15:45:22,795 p=21408 u=root |  PLAY [install httpd from yum] ************************************************* 
2017-06-06 15:45:22,795 p=21408 u=root |  GATHERING FACTS *************************************************************** 
2017-06-06 15:45:24,231 p=21408 u=root |  failed: [172.17.0.4] => {"failed": true, "parsed": false}
2017-06-06 15:45:24,232 p=21408 u=root |  /bin/sh: sudo: command not found
OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 56: Applying options for *
debug1: auto-mux: Trying existing master
debug1: mux_client_request_session: master session id: 2
Shared connection to 172.17.0.4 closed.

2017-06-06 15:45:24,235 p=21408 u=root |  failed: [172.17.0.3] => {"failed": true, "parsed": false}
2017-06-06 15:45:24,235 p=21408 u=root |  /bin/sh: sudo: command not found
OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 56: Applying options for *
debug1: auto-mux: Trying existing master
debug1: mux_client_request_session: master session id: 2
Shared connection to 172.17.0.3 closed.

2017-06-06 15:45:24,240 p=21408 u=root |  failed: [172.17.0.2] => {"failed": true, "parsed": false}
2017-06-06 15:45:24,240 p=21408 u=root |  /bin/sh: sudo: command not found
OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 56: Applying options for *
debug1: auto-mux: Trying existing master
debug1: mux_client_request_session: master session id: 2
Shared connection to 172.17.0.2 closed.

2017-06-06 15:45:24,249 p=21408 u=root |  TASK: [install] *************************************************************** 
2017-06-06 15:45:24,255 p=21408 u=root |  FATAL: no hosts matched or all hosts have already failed -- aborting

2017-06-06 15:45:24,255 p=21408 u=root |  PLAY RECAP ******************************************************************** 
2017-06-06 15:45:24,256 p=21408 u=root |             to retry, use: --limit @/root/httpd.retry

2017-06-06 15:45:24,256 p=21408 u=root |  172.17.0.2                 : ok=0    changed=0    unreachable=0    failed=1   
2017-06-06 15:45:24,256 p=21408 u=root |  172.17.0.3                 : ok=0    changed=0    unreachable=0    failed=1   
2017-06-06 15:45:24,256 p=21408 u=root |  172.17.0.4                 : ok=0    changed=0    unreachable=0    failed=1   
2017-06-06 15:45:53,254 p=21584 u=root |   
2017-06-06 15:45:53,254 p=21584 u=root |  /usr/bin/ansible-playbook ./playbooks/httpd.yml
2017-06-06 15:45:53,254 p=21584 u=root |   
2017-06-06 15:45:53,269 p=21584 u=root |  PLAY [install httpd from yum] ************************************************* 
2017-06-06 15:45:53,270 p=21584 u=root |  GATHERING FACTS *************************************************************** 
2017-06-06 15:45:55,102 p=21584 u=root |  ok: [172.17.0.2]
2017-06-06 15:45:55,107 p=21584 u=root |  ok: [172.17.0.4]
2017-06-06 15:45:55,134 p=21584 u=root |  ok: [172.17.0.3]
2017-06-06 15:45:55,144 p=21584 u=root |  TASK: [install] *************************************************************** 

由于网络问题这里我等待的时间太长了,所以直接中断了 :(