ansible:如何在centos 7上重新启动auditd服务得到关于依赖的错误

在我的剧本中，我有一个更新 audit.rules 的任务，然后通知应该重新启动 auditd 服务的处理程序。

task:
  - name:  6.6.7 - audit rules configuration
    template: src=X/ansible/templates/auditd_rules.j2
              dest=/etc/audit/rules.d/audit.rules
              backup=yes
              owner=root group=root mode=0640
     notify:
   - restart auditd


  handlers:
    - name: restart auditd
      service: name=auditd state=restarted

RUNNING HANDLER [restart auditd] *********************************************** fatal: [ipX-southeast-2.compute.internal]: FAILED! => {"changed": false, "failed": true, "msg": "Unable to restart service auditd: Failed to restart auditd.service: Operation refused, unit auditd.service may be requested by dependency only.\n"} 

 systemctl cat auditd.service
# /usr/lib/systemd/system/auditd.service
[Unit]
Description=Security Auditing Service
DefaultDependencies=no
After=local-fs.target systemd-tmpfiles-setup.service
Conflicts=shutdown.target
Before=sysinit.target shutdown.target
RefuseManualStop=yes
ConditionKernelCommandLine=!audit=0
Documentation=man:auditd(8) https://people.redhat.com/sgrubb/audit/

[Service]
ExecStart=/sbin/auditd -n
## To not use augenrules, copy this file to /etc/systemd/system/auditd.service
## and comment/delete the next line and uncomment the auditctl line.
## NOTE: augenrules expect any rules to be added to /etc/audit/rules.d/
ExecStartPost=-/sbin/augenrules --load
#ExecStartPost=-/sbin/auditctl -R /etc/audit/audit.rules
ExecReload=/bin/kill -HUP $MAINPID
# By default we don't clear the rules on exit. To enable this, uncomment
# the next line after copying the file to /etc/systemd/system/auditd.service
#ExecStopPost=/sbin/auditctl -R /etc/audit/audit-stop.rules

[Install]
WantedBy=multi-user.target

最佳答案

这已在?Red Hat Bugzilla #1026648?中进行了探索、讨论和解决(大部分)。和?Anisble Issue # 22171 (github)报告。

分辨率

• 使用 ansible?service模块参数use=service强制执行?/sbin/service实用程序而不是?systemd?的聚集事实值(调用?/sbin/systemctl?)像这样:
• - service: name=auditd state=restarted use=service
• Example playbook (pastebin.com)
  
• 解决方法:
  
• 使用 ansible?command模块来显式运行服务可执行文件，如下所示:
• - command: /sbin/service auditd restart
  
• 分析——根本原因:
  ?

  • This is an issue created by upstream packaging of auditd.service unit. It will not start/stop/restart when acted upon by?systemctl, apparently?by design.
  • It is further compounded by the Ansible service control function, which uses the preferred method identified when system facts are gathered and "ansible_service_mgr" returns "systemd". This is regardless of the actual module used to manage the service.unit.
  • RHEL dev team may fix if considered a problem in upcoming updates (ERRATA)
  • Ansible dev team has offered a workaround and (as of 2.2) updated the?service?module with the?use?parameter.

关于ansible:如何在centos 7上重新启动auditd服务得到关于依赖的错误，我们在Stack Overflow上找到一个类似的问题：?centos7 - ansible: how to restart auditd service on centos 7 get error about dependency - Stack Overflow

task:
  - name:  6.6.7 - audit rules configuration
    template: src=X/ansible/templates/auditd_rules.j2
              dest=/etc/audit/rules.d/audit.rules
              backup=yes
              owner=root group=root mode=0640
     notify:
   - restart auditd


  handlers:
    - name: restart auditd
      service: name=auditd state=restarted

RUNNING HANDLER [restart auditd] *********************************************** fatal: [ipX-southeast-2.compute.internal]: FAILED! => {"changed": false, "failed": true, "msg": "Unable to restart service auditd: Failed to restart auditd.service: Operation refused, unit auditd.service may be requested by dependency only.\n"} 

 systemctl cat auditd.service
# /usr/lib/systemd/system/auditd.service
[Unit]
Description=Security Auditing Service
DefaultDependencies=no
After=local-fs.target systemd-tmpfiles-setup.service
Conflicts=shutdown.target
Before=sysinit.target shutdown.target
RefuseManualStop=yes
ConditionKernelCommandLine=!audit=0
Documentation=man:auditd(8) https://people.redhat.com/sgrubb/audit/[Service]
ExecStart=/sbin/auditd -n
## To not use augenrules, copy this file to /etc/systemd/system/auditd.service
## and comment/delete the next line and uncomment the auditctl line.
## NOTE: augenrules expect any rules to be added to /etc/audit/rules.d/
ExecStartPost=-/sbin/augenrules --load
#ExecStartPost=-/sbin/auditctl -R /etc/audit/audit.rules
ExecReload=/bin/kill -HUP $MAINPID
# By default we don't clear the rules on exit. To enable this, uncomment
# the next line after copying the file to /etc/systemd/system/auditd.service
#ExecStopPost=/sbin/auditctl -R /etc/audit/audit-stop.rules

[Install]
WantedBy=multi-user.target

- service: name=auditd state=restarted use=service

- command: /sbin/service auditd restart

https://stackoverflow.com/questions/41053331/

简单来说就是auditd开发者觉着auditd是系统底层记录日志的服务，不应由管理员重启或停止其服务。

解决方法：

1、使用service auditd restart可以绕过systemctl重启auditd服务。

2、修改systemd服务配置文件/usr/lib/systemd/system/auditd.service配置RefuseManualStop=No，执行systemctl deamon-reload。后可以使用systemctl restart auditd

在ansible-play里，1、可以使用command模块代替service模块，重启auditd服务。

- command: /sbin/service auditd restart

或者2、修改auditd.service配置文件，使systemctl可以管理auditd