Question

我是Ansible的新手（1.9.2）。我想检查当前的zlib版本。如果它不是1.2.8，那么Ansible需要从源代码安装它。

检查当前zlib版本的命令是

root@node2 zlib-1.2.8]# cat /usr/local/include/zlib.h | grep "#define ZLIB_VERSION" | awk '{print $3}'
"1.2.8

我的Ansible代码

 - name: "Check zlib version "
      shell: "cat /usr/local/include/zlib.h | grep \"#define ZLIB_VERSION\" | awk '{print $3}'"
      register: zlib_version
    - name: "Debug result"
      debug: result
    - name: "Build zlib "
      command: "{{ item }} chdir=/home/zlib-1.2.8"
      with_items:
        - "./configure --prefix=/usr/local --shared"
        - make
        - make install
      when: "zlib_version!=1.2.8"

调试打印＆＃34; hello world＆＃34; !!!

TASK: [Debug result] ********************************************************** 
ok: [192.168.111.81] => {
    "msg": "Hello world!"
}

如何检查shell输出并相应地运行命令。

我已更改debug: var=zlib_version.stdout。它打印

TASK: [Debug result] ********************************************************** 
ok: [192.168.111.81] => {
    "var": {
        "zlib_version.stdout": "\"1.2.8\""
    }
}

但是，现在我需要写两次zlib_version.stdout.find ("\"1.2.8\"") == -1。是否有一种简单的方法可以使Ansible在匹配zlib_version.stdout.find ("\"1.2.8\"") == -1时跳过所有命令，shell和unarchive？

 - name: "Check zlib version "
      shell: "cat /usr/local/include/zlib.h | grep \"#define ZLIB_VERSION\" | awk '{print $3}'"
      ignore_errors: true
      register: zlib_version
    - unarchive: src=/home/files/nigex/zlib-1.2.8.tar.gz   dest=/home/
      when: zlib_version.stdout.find ("\"1.2.8\"") == -1

    - name: "Debug result"
      debug: var=zlib_version.stdout
    - name: "Build zlib "
      command: "{{ item }} chdir=/home/zlib-1.2.8"
      with_items:
        - "./configure --prefix=/usr/local --shared"
        - make
        - make install
      when: zlib_version.stdout.find ("\"1.2.8\"") == -1

Answer 1

shell命令的输出可通过df$mean2 <- with(df, (is.na(mean1)==F&(is.na(SD)==F))*mean1+ (is.na(mean1)==T & is.na(SD)==T & is.na(median)==F & is.na(range_min)==F & is.na(range_max)==F & is.na(IQR_25)==F & is.na(IQR_75)==F)*20)属性获得。因此stdout将为您提供命令的输出。

zlib_version.stdout

可以创建一个简单的role以避免两次写入条件。像这样：

- name: "Debug result"
  debug: var=zlib_version.stdout

然后仅在条件为真时包括角色。

# file roles/zlib/tasks/main.yml
---
- unarchive: src=/home/files/nigex/zlib-1.2.8.tar.gz   dest=/home/

- name: "Build zlib "
  command: "{{ item }} chdir=/home/zlib-1.2.8"
  with_items:
    - "./configure --prefix=/usr/local --shared"
    - make
    - make install

ansible：如何检查shell输出

1 个答案: