Ansible服务常用命令模块详细解析(3)

5 copy 模块
ansible中的copy模块用于实现文件复制和批量下发文件。其中使用src来定义本地源文件路径，使用dest定义被管理主机文件路径，使用content则是通过指定信息内容生成目标文件。

[root@promote ~]# ansible-doc -s copy                  #查看copy模块指令
- name: Copies files to remote locations
  copy:
      attributes:            # Attributes the file or directory should have. To get
                              supported flags look
                              at the man page for
                              `chattr' on the target
                              system. This string
                              should contain the
                              attributes in the same
                              order as the one
                              displayed by `lsattr'.
                              `=' operator is
                              assumed as default,
                              otherwise `+' or `-'
                              operators need to be
                              included in the
                              string.

下面我将本地文件/etc/fstab复制到被管理主机上的/opt/fstab.bk，所有者设置为root，权限设置为640

[root@promote ~]# ansible web -m copy -a 'src=/etc/fstab dest=/opt/fstab.bk owner=root mode=644'
192.168.199.130 | CHANGED => {
    "changed": true,
    "checksum": "a8b8566b1d9f28b55823c8f61f88d35d81014418",
    "dest": "/opt/fstab.bk",
    "gid": 0,
    "group": "root",
    "md5sum": "f25dda38d8c7bb5988c8607bc2a9a17b",
    "mode": "0644",
    "owner": "root",
    "secontext": "system_u:object_r:usr_t:s0",
    "size": 595,
    "src": "/root/.ansible/tmp/ansible-tmp-1540220785.51-128147354820010/source",
    "state": "file",
    "uid": 0
}

[root@web ~]# ll /opt/fstab.bk
-rw-r--r--. 1 root root 595 10月 22 23:06 /opt/fstab.bk

接着我将"hello"写入“/opt/fstab.bk”

[root@promote ~]# ansible web -m copy -a 'content="hello!" dest=/opt/fstab.bk'
192.168.199.130 | CHANGED => {
    "changed": true,
    "checksum": "8f7d88e901a5ad3a05d8cc0de93313fd76028f8c",
    "dest": "/opt/fstab.bk",
    "gid": 0,
    "group": "root",
    "md5sum": "5a8dd3ad0756a93ded72b823b19dd877",
    "mode": "0644",
    "owner": "root",
    "secontext": "system_u:object_r:usr_t:s0",
    "size": 6,
    "src": "/root/.ansible/tmp/ansible-tmp-1540221051.34-78743719487515/source",
    "state": "file",
    "uid": 0
}

[root@web ~]# cat /opt/fstab.bk
hello!

6 file 模块
在ansible中使用file模块来设置文件属性。其中使用path指定文件路径，使用src定义源文件路径，使用name或dest来替换创建文件的符号链接。
下面我将web服务器中的fstab.bk文件属主设为mysql，属组设为mysql，权限设为666

[root@promote ~]# ansible web -m file -a 'path=/opt/fstab.bk owner=mysql group=mysql mode=666'
192.168.199.130 | CHANGED => {
    "changed": true,
    "gid": 306,
    "group": "mysql",
    "mode": "0666",
    "owner": "mysql",
    "path": "/opt/fstab.bk",
    "secontext": "system_u:object_r:usr_t:s0",
    "size": 6,
    "state": "file",
    "uid": 306
}

[root@web ~]# ll /opt/fstab.bk
-rw-rw-rw-. 1 mysql mysql 6 10月 22 23:10 /opt/fstab.bk

下面我为/opt/fstab.bk/创建一个链接文件