Write by lyc at 2019-11-8
参考博文：
ansible笔记（29）：条件判断与错误处理
1.fail 模块
用于终止当前playbook的执行，通常与条件语句组合使用，当满足条件时，终止当前play的运行。
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| ---
- name: check nginx process status
shell: >
ps aux | grep nginx | egrep -v "grep|php-fpm" | wc -l
register: nginx_process_count
- name: check nginx 80 http port status
shell: >
netstat -lntup | grep nginx | grep 80 | wc -l
register: nginx_port_count
- name: check nginx is running
fail:
msg: "WARNNING: nginx is running."
when: nginx_process_count.stdout|int > 1 and nginx_port_count.stdout == "1"
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fail 判断192.168
使用in, not in判断字符串是否存在于变量结果当中。
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| ---
- debug: var=ansible_default_ipv4.address
tags: always
- name: fail+when
fail:
msg: "Remote host is INNER."
when: "'192.168' in ansible_default_ipv4.address"
tags: always
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2.failed_when 判断192.168
- 与fail + when 实现的效果一致，组合了fail块的功能
- 当failed_when条件成立时，执行fail终止playbook运行
- 注意以下shell的模块确实是执行了，只不过是判断shell的执行结果ret.stdout变量
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- name: fail+failed_when
shell: "echo {{ ansible_default_ipv4.address }}"
register: ret
failed_when: "'192.168' in ret.stdout"
tags: always
- debug: var=ret.stdout
tags: always
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3.ignore_errors 忽略错误
ignore_errors 的对象是task
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| ---
- hosts: webserver
vars:
src_dir: /root
src_file: a.txt
tasks:
- name: exec command
command: /bin/true
register: result
ignore_errors: True
|
