时间戳

首页 > 解决方案 > Ansible：安装包后无法启动 httpd 服务

ansible - Ansible：安装包后无法启动 httpd 服务

问题描述

我正在测试剧本

以下 playbook 可以安装apache和启动服务：

- hosts: apacheweb
  user: ansibleuser
  become: yes
  gather_facts: no
  tasks:
  - name: Install the apache web server
    yum: pkg=httpd state=latest
    notify: Start HTTPD
  handlers:
  - name: Start HTTPD
    systemd: name=httpd state=started enabled=yes

但不是下一个，因为它会安装httpd软件包但不会启动服务并启用它。

- hosts: apacheweb
  user: ansibleuser
  become: yes
  gather_facts: no
  tasks:
  - name: Install the apache web server
    yum: pkg=httpd state=latest
    notify: Start HTTPD
  - name: verify that the web service is running
    command: systemctl status httpd
    register: result
  - debug: var=result
  handlers:
  - name: Start HTTPD
    systemd: name=httpd state=started enabled=yes

错误输出：

PLAY [apacheweb] ******************************************************************************************************************

TASK [Install the apache web server] **********************************************************************************************
changed: [host.learn.com]

TASK [verify that the web service is running] *************************************************************************************
fatal: [host.learn.com]: FAILED! => {"changed": true, "cmd": ["systemctl", "status", "httpd"], "delta": "0:00:00.032030", "end": "2020-04-14 17:59:18.295428", "msg": "non-zero return code", "rc": 3, "start": "2020-04-14 17:59:18.263398", "stderr": "", "stderr_lines": [], "stdout": "● httpd.service - The Apache HTTP Server\n   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)\n   Active: inactive (dead)\n     Docs: man:httpd(8)\n           man:apachectl(8)\n\nApr 14 14:50:31 host.learn.com systemd[1]: Starting The Apache HTTP Server...\nApr 14 14:50:31 host.learn.com systemd[1]: Started The Apache HTTP Server.\nApr 14 14:53:45 host.learn.com systemd[1]: Stopping The Apache HTTP Server...\nApr 14 14:53:46 host.learn.com systemd[1]: Stopped The Apache HTTP Server.\nApr 14 17:56:51 host.learn.com systemd[1]: Starting The Apache HTTP Server...\nApr 14 17:56:51 host.learn.com systemd[1]: Started The Apache HTTP Server.\nApr 14 17:57:32 host.learn.com systemd[1]: Stopping The Apache HTTP Server...\nApr 14 17:57:33 host.learn.com systemd[1]: Stopped The Apache HTTP Server.", "stdout_lines": ["● httpd.service - The Apache HTTP Server", "   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)", "   Active: inactive (dead)", "     Docs: man:httpd(8)", "           man:apachectl(8)", "", "Apr 14 14:50:31 host.learn.com systemd[1]: Starting The Apache HTTP Server...", "Apr 14 14:50:31 host.learn.com systemd[1]: Started The Apache HTTP Server.", "Apr 14 14:53:45 host.learn.com systemd[1]: Stopping The Apache HTTP Server...", "Apr 14 14:53:46 host.learn.com systemd[1]: Stopped The Apache HTTP Server.", "Apr 14 17:56:51 host.learn.com systemd[1]: Starting The Apache HTTP Server...", "Apr 14 17:56:51 host.learn.com systemd[1]: Started The Apache HTTP Server.", "Apr 14 17:57:32 host.learn.com systemd[1]: Stopping The Apache HTTP Server...", "Apr 14 17:57:33 host.learn.com systemd[1]: Stopped The Apache HTTP Server."]}

RUNNING HANDLER [Start HTTPD] *****************************************************************************************************

PLAY RECAP ************************************************************************************************************************
host.learn.com : ok=1    changed=1    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0

我创建的第二本剧本可能有什么问题？

标签： ansibleansible-template

解决方案

由于任务失败，启动服务的处理程序Start HTTPD没有运行。verify that the web service is running

在每台主机上，处理程序仅在播放中的所有任务完成后运行一次。

在你的剧本中，有三个任务。尽管第一个任务通知了处理程序Install the apache web server，但 ansible 仅在完成该播放中的所有三个任务后才运行处理程序。

当主机上的任务失败时，先前通知的处理程序将不会在该主机上运行。

第二个任务的失败使处理程序无法在该主机上运行，​​因此服务没有启动。

如果您希望在任务失败的情况下运行处理程序，您可以force_handlers: True在您的游戏中设置。

阅读更多：处理程序，处理程序失败

推荐阅读