ansible模块
查找模块
ansible-doc -l
查看某个模块的具体参数帮助
ansible-doc -s command
一、command模块
1.功能说明：
command Executes a command on a remote node
功能说明：执行一个命令在远程节点上
操作实践：
ansible oldboy -m command -a "free -m"
ansible oldboy -m command -a "df -h"
ansible oldboy -m command -a "ls /root"
ansible oldboy -m command -a "cat redhat-release"
ansible oldboy -m command -a "cat /etc/redhat-release"
最通用的功能。
[root@m01 ~]# ansible oldboy -m command -a "cat /etc/redhat-release"
172.16.1.7 | CHANGED | rc=0 >>
CentOS Linux release 7.6.1810 (Core)
172.16.1.31 | CHANGED | rc=0 >>
CentOS Linux release 7.6.1810 (Core)
172.16.1.41 | CHANGED | rc=0 >>
CentOS Linux release 7.6.1810 (Core)
[root@m01 ~]# cat /server/scripts/cmd.sh
for n in 31 41
do
echo "=====172.16.1.$n======"
ssh 172.16.1.$n "$1"
done
[root@m01 ~]# sh /server/scripts/cmd.sh "cat /etc/redhat-release"
=====172.16.1.31======
CentOS Linux release 7.6.1810 (Core)
=====172.16.1.41======
CentOS Linux release 7.6.1810 (Core)
特殊：不支持的东西，例如 > < | &等 $HOME，替代方案用shell模块
ansible oldboy -m shell -a "ps -ef|grep ssh"
ansible oldboy -m shell -a "echo oldboy >/tmp/a.log"
2.常用参数说明及实践
[root@m01 ~]# ansible-doc -s command
- name: Executes a command on a remote node
command:
argv: # Allows the user to provide the command as a list vs. a string. Only the
string or the list form can be provided, not
both. One or the other must be provided.
chdir: # Change into this directory before running the command.
creates: # A filename or (since 2.0) glob pattern. If it already exists, this step
*won't* be run.
free_form: # (required) The command module takes a free form command to run. There is no
parameter actually named 'free form'. See the
examples!
removes: # A filename or (since 2.0) glob pattern. If it already exists, this step *will* be run.
stdin: # Set the stdin of the command directly to the specified value.
warn: # If command_warnings are on in ansible.cfg, do not warn about this particular
line if set to `no'.
参数：chdir=/tmp配置相当于cd /tmp
[root@m01 ~]# ansible oldboy -m command -a "pwd chdir=/etc"
ansible oldboy -m shell -a "cd /etc/;pwd"
参数：creates=/etc 相当于条件测试 [ -e /etc ]||pwd 和下面removes相反
[root@m01 ~]# ansible oldboy -m command -a "pwd creates=/etc"
参数：removes=/root 相当于条件测试 [ -e /root ]&&ls /root
ansible oldboy -m command -a "ls /root removes=/root"
ansible oldboy -m shell -a "[ -d /etc ]||pwd"
[root@m01 ~]# ansible oldboy -m command -a "cat /etc/hosts removes=/etc/hosts"
参数：warn=False 忽略警告
[root@m01 ~]# ansible oldboy -m command -a "chmod 000 /etc/hosts warn=False"
二、shell模块
功能说明：
shell Execute commands in nodes.
功能说明：执行一个命令在远程节点上
2.常见参数：
shell:
chdir: # cd into this directory before running the command
creates: # a filename, when it already exists, this step will *not* be
run.
executable: # change the shell used to execute the command. Should be an
absolute path to the
executable.
free_form: # (required) The shell module takes a free form command to run,
as a string. There's not an
actual option named "free
form". See the examples!
removes: # a filename, when it does not exist, this step will *not* be
run.
stdin: # Set the stdin of the command directly to the specified value.
warn: # if command warnings are on in ansible.cfg, do not warn about
this particular line if set to no/false.
三、copy模块
1.功能说明：
功能说明：复制文件到远程主机
2.常见参数：
四、file模块
1.功能说明
功能说明：设置文件属性
2.常见参数：
五、script模块
1.功能说明
功能说明：远程节点上执行本地脚本
六、yum模块
1.功能说明
功能说明：yum包管理模块
七、systemd模块（C7）
1.功能说明
功能说明：管理服务模块
八、cron模块
1.功能说明
功能说明:管理定时任务条目信息模块
2.常见参数：
项目实践：
rsync服务端写成脚本r1.sh
rsync服务端写成脚本
nfs服务端写成脚本n1.sh
nfs客户端写成脚本
sersync服务端写成脚本s1.sh
sersync客户端写成脚本
