ansible模块应用语法格式： ansible 主机名称/主机组名称/主机地址信息/all -m(指定应用的模块信息) -a(指定动作信息)
command – Execute commands on targets
command模块（默认模块）
[root@linux-node2 ~]# ansible 192.168.0.102 -m command -a hostname
192.168.0.102 | SUCCESS | rc=0 >>
linux-node1.localdomain
chdir 切换目录
[root@linux-node2 ~]# ansible 192.168.0.102 -m command -a "chdir=/tmp touch ansible.txt"
[WARNING]: Consider using file module with state=touch rather than running touch
192.168.0.102 | SUCCESS | rc=0 >>
creates 如果指定文件存在，就不执行命令
[root@linux-node2 ~]# ansible 192.168.0.102 -m command -a "creates=/tmp touch ansible.txt"
192.168.0.102 | SUCCESS | rc=0 >>
skipped, since /tmp exists #如果ansible.txt文件已经存在 ，就跳过 不执行
removes 如果文件存在，就执行
[root@linux-node2 ~]# ansible 192.168.0.102 -m command -a "removes=/tmp touch ansible.txt"
[WARNING]: Consider using file module with state=touch rather than running touch
192.168.0.102 | SUCCESS | rc=0 >> #如果 ansible.txt文件不存在，就不执行
shell – Execute shell commands on targets
shell模块（万能模块）： 如果要用特殊符号 > < | & ‘ ‘ 则要用shell 模块, command是不支持管道符之类的
ansible 192.168.0.102 -m shell -a "hostname"
ansible 192.168.0.102 -m shell -a "echo 123 > haha.txt"
ansible 192.168.0.102 -m shell -a "netstat -anptu | grep xxx"
实践使用 利用shell执行脚本
第一个步骤：编写一个脚本
第二个步骤：将脚本发送到远程主机
第三个步骤：将脚本权限进行修改（添加执行权限）
第四个步骤：运行ansible命令执行脚本
1、第一个步骤：编写一个脚本
eg:执行检查磁盘脚本
#!/bin/bash basedir=$(cd `dirname $0`;pwd) echo $basedir diskmax=10 # 磁盘的阈值 function check_max(){ local disk_size=$1 if [ $disk_size -ge $diskmax ] then echo "unhealth" else echo "health" fi } function check_disk_info(){ #grep -v 取反 # cut -d '%' -f 1 以%为分隔符选择第一个 #while read disk_size 循环读入每行数据 赋值给disk_size df -h | grep -v /dev/loop0 | grep -v /dev/sr0 | grep dev | awk 'NR > 1 {print $5}' | cut -d '%' -f 1 | while read disk_size do echo "" echo "disk_size=$disk_size%" check_max $disk_size done } check_disk_info
2、第二个步骤：将脚本发送到远程主机
拷贝脚本之前，先远程创建好准备拷贝过去的文件目录 ，其中远程创建文件目录有两种方式，操作如下：
方式一：shell命令方式
gota@gota-linux61:~$ ansible cluster -m shell -a "mkdir -p /work/ansible" [WARNING]: Consider using the file module with state=directory rather than running 'mkdir'. If you need to use command because file is insufficient you can add 'warn: false' to this command task or set 'command_warnings=False' in ansible.cfg to get rid of thi
s message. 192.168.1.21 | CHANGED | rc=0 >> 192.168.1.20 | CHANGED | rc=0 >> 192.168.1.63 | CHANGED | rc=0
方式二：file命令执行创建文件夹
gota@gota-linux61:~$ ansible cluster -m file -a "path=/work/file state=directory mode=0700" 192.168.1.21 | CHANGED => { "ansible_facts": { "discovered_interpreter_python": "/usr/bin/python" }, "changed": true, "gid": 0, "group": "root", "mode": "0700", "owner": "root", "path": "/work/file", "size": 4096, "state": "directory", "uid": 0 }
3、第三个步骤：将脚本权限进行修改（添加执行权限）
批量拷贝shell脚本到各台服务器
ansible 主机组 -m copy -a "src=拷贝文件路径 dest=拷贝目前文件路径 mode=0755
gota@gota-linux61:~$ ansible cluster -m copy -a "src=/home/gota/test.sh dest=/work/ansible mode=0755" 192.168.1.21 | CHANGED => { "ansible_facts": { "discovered_interpreter_python": "/usr/bin/python" }, "changed": true, "checksum": "dcaa896be5c669bbfcc657cc25452d46962aedb6", "dest": "/work/ansible/test.sh", "gid": 0, "group": "root", "md5sum": "bf53066b75afbc91cd8917d43e10880d", "mode": "0755", "owner": "root", "size": 637, "src": "/root/.ansible/tmp/ansible-tmp-1564985837.03-26369088965074/source", "state": "file", "uid": 0
4、第四个步骤：运行ansible命令执行脚本
gota@gota-linux61:~$ ansible cluster -m shell -a "/work/ansible/test.sh" 192.168.1.21 | CHANGED | rc=0 >> /work/ansible disk_size=10% unhealth disk_size=9% health disk_size=98% unhealth 192.168.1.20 | CHANGED | rc=0 >> /work/ansible disk_size=5% health disk_size=1% health disk_size=96% unhealth
script – Runs a local script on a remote node after transferring it
script模块 跟上面类似 执行脚本只要两步：
1.第一个步骤：编写一个脚本
2.第二个步骤：运行ansible命令执行脚本
gota@gota-linux61:~$ ansible cluster -m script -a "/home/gota/test.sh" 192.168.1.21 | CHANGED => { "changed": true, "rc": 0, "stderr": "Shared connection to 192.168.1.21 closed. ", "stderr_lines": [ "Shared connection to 192.168.1.21 closed." ], "stdout": "/root/.ansible/tmp/ansible-tmp-1564988286.84-276931002259842 disk_size=10% unhealth disk_size=9% health disk_size=98% unhealth ", "stdout_lines": [ "/root/.ansible/tmp/ansible-tmp-1564988286.84-276931002259842", "", "disk_size=10%", "unhealth", "", "disk_size=9%", "health", "", "disk_size=98%", "unhealth" ] }