ansible常用模块应用

1.shell 和command

• command和shell模块的区别
  • command模块的命令不启动shell，是通过ssh执行命令的
  • command不支持bash特性，如管道和重定向
  • 需要shell完成的command都做不了

##用command模块不会开启bash解释器，所以管道之类的不能用
[root@centos7 ansible]# ansible test-yunwei -m command -a "ps >test.txt"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini02 | FAILED | rc=1 >>
error: garbage optionUsage:ps [options]Try 'ps --help <simple|list|output|threads|misc|all>'or 'ps --help <s|l|o|t|m|a>'for additional help text.For more details see ps(1).non-zero return code
centos7-mini01 | FAILED | rc=1 >>
error: garbage option###用shell测试一下，调用shell模块
[root@centos7 ansible]# ansible test-yunwei -m shell -a 'ps > /root/test.txt'
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini01 | CHANGED | rc=0 >>centos7-mini02 | CHANGED | rc=0 >>centos7 | CHANGED | rc=0 >>[root@centos7 ansible]# ansible test-yunwei -m shell -a 'ls -l /root/test.txt'
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini01 | CHANGED | rc=0 >>
-rw-r--r--. 1 root root 145 4月  15 03:28 /root/test.txt
centos7 | CHANGED | rc=0 >>
-rw-r--r--. 1 root root 145 4月  15 15:28 /root/test.txt
centos7-mini02 | CHANGED | rc=0 >>
-rw-r--r--. 1 root root 145 4月  15 03:28 /root/test.txt

2.shell模块

2.1 shell模块之chdir

###########################
#进入目录创建文件
[root@centos7 ansible]# ansible test-yunwei -m shell -a "chdir=/tmp touch 666.txt 777.txt 888.txt"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
[WARNING]: Consider using the file module with state=touch rather than running 'touch'.
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 this
message.
centos7-mini02 | CHANGED | rc=0 >>centos7-mini01 | CHANGED | rc=0 >>centos7 | CHANGED | rc=0 >>

2.2 shell模块之create

• creates文件名：文件存在，不执行shell命令
• removes文件名：文件不存在，不执行命令

##########################################
#判断~/.ssh/id_rsa存在吗，存在的话不执行，不存在的话生成秘钥
[root@centos7 ansible]# ansible test-yunwei -m shell -a "ssh-keygen -f ~/.ssh/id_rsa -N '' creates=~/.ssh/id_rsa"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | SUCCESS | rc=0 >>
skipped, since /root/.ssh/id_rsa exists
centos7-mini01 | SUCCESS | rc=0 >>
skipped, since /root/.ssh/id_rsa exists
centos7-mini02 | CHANGED | rc=0 >>
Generating public/private rsa key pair.
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:A0SrvTwDjW57+0b1gIIsg/EzMXlyXUIQ+iM5uL/20Xc root@centos7-mini02
The key's randomart image is:
+---[RSA 2048]----+
|   .o*=..        |
|. =.o..o         |
| +.B .o  .       |
|..*oo=... o      |
|. +=* o.S. o     |
| . + = ...  .    |
|.   + *.. E      |
| ... o.+..       |
| .ooo..+.        |
+----[SHA256]-----+

3. script模块

• script允许在本地写脚本，拷贝到被管理端并执行脚本
• 脚本不是shell脚本的话，可以没有执行权限（如python）

#script模块作用：把test.sh脚本拷贝到远程主机并执行
#把这个脚本拷贝到了远程主机的哪里了呢，拷贝到了远程主机的临时目录，执行完就删除了,ansible配置文件是这么说的"#remote_tmp     = ~/.ansible/tmp"
[root@centos7 ansible]# ansible all -m script -a "./test.sh"

4. file模块

• 可以创建文件、目录、链接、修改权限、属性等

4.1 file模块创建文件

###创建文件
[root@centos7 ansible]# ansible all -m file  -a "path=/tmp/file.txt state=touch"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "dest": "/tmp/file.txt", "gid": 0, "group": "root", "mode": "0644", "owner": "root", "secontext": "unconfined_u:object_r:user_tmp_t:s0", "size": 0, "state": "file", "uid": 0
}

4.2 file模块创建目录

###创建目录
[root@centos7 ansible]# ansible all -m file  -a "path=/tmp/mydir state=directory"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "gid": 0, "group": "root", "mode": "0755", "owner": "root", "path": "/tmp/mydir", "secontext": "unconfined_u:object_r:user_tmp_t:s0", "size": 6, "state": "directory", "uid": 0
}

4.3 file模块修改权限

###修改权限
[root@centos7 ansible]# ansible all -m file -a "path=/tmp/mydir owner=sshd group=adm mode=777"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "gid": 4, "group": "adm", "mode": "0777", "owner": "sshd", "path": "/tmp/mydir", "secontext": "unconfined_u:object_r:user_tmp_t:s0", "size": 6, "state": "directory", "uid": 74
}

4.4 file模块删除文件

###删除文件
[root@centos7 ansible]# ansible all -m file -a "path=/tmp/mydir state=absent"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "path": "/tmp/mydir", "state": "absent"
}

4.5 file模块创建链接文件

###源文件是src，给谁创建快捷方式，给src=/etc/hosts创快捷方式
[root@centos7 ansible]# ansible all -m file -a "src=/etc/hosts path=/tmp/host.txt state=link"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "dest": "/tmp/host.txt", "gid": 0, "group": "root", "mode": "0777", "owner": "root", "secontext": "unconfined_u:object_r:user_tmp_t:s0", "size": 10, "src": "/etc/hosts", "state": "link", "uid": 0
}

5. copy模块

5.1 有源文件的copy

###src源文件，dest目标主机位置
###
###如果把源文件的内容修改过了，在执行一次命令才会拷贝，否则在执行命令的时候，虽然显示的是成功了，但是没有重新拷贝
[root@centos7 ansible]# ansible all -m copy -a "src=/root/test66.txt dest=/root"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | SUCCESS => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": false, "checksum": "e50cd9d03ee5f295d1e938ce5b086b355cba3bec", "dest": "/root/test66.txt", "gid": 0, "group": "root", "mode": "0644", "owner": "root", "path": "/root/test66.txt", "secontext": "unconfined_u:object_r:admin_home_t:s0", "size": 5, "state": "file", "uid": 0
}

5.2 无源文件的copy

[root@centos7 ansible]# ansible all -m copy -a "content='hello word\ntest' dest=/root/test.txt"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini01 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "checksum": "7300ec19dfa2f1256aaceccb1a0aa916c75e03b0", "dest": "/root/test.txt", "gid": 0, "group": "root", "md5sum": "148dea32b88706f1c1f31832bd1db60f", "mode": "0644", "owner": "root", "secontext": "unconfined_u:object_r:admin_home_t:s0", "size": 15, "src": "/root/.ansible/tmp/ansible-tmp-1618482627.69-29153-236231197182196/source", "state": "file", "uid": 0
}[root@centos7-mini01 ~]# cat test.txt
hello word
test

6.fetch模块

• 将远程50台机器的日志拷贝到控制主机上
• 与copy相似，但是作用相反

###远程主机的/etc/hostname拷贝到控制主机上，我们拷贝远程主机上的日志的时候，由于名字都是一样的，所以拷贝到控制机上默认会创建一个目录，目录名字是远程主机的主机名，将拷贝过来的东西就放在了这个目录下
[root@centos7 ansible]# ansible all -m fetch -a "src=/etc/hostname dest=/root"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"changed": true, "checksum": "628e3290ed8ba31033265bf22a6943e862edd225", "dest": "/root/centos7/etc/hostname", "md5sum": "8f98d30d9103ed428293d08d3c3a717c", "remote_checksum": "628e3290ed8ba31033265bf22a6943e862edd225", "remote_md5sum": null
}[root@centos7 ~]# ls centos7-mini01/etc/hostname
centos7-mini01/etc/hostname

7. lineinfile和replace模块

• 修改单个文件的单行内容时可以使用lineinfile模块

[root@centos7 ~]# ansible all -m lineinfile -a "path=/etc/issue line='hello world'"
172.16.134.128 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "backup": "", "changed": true, "msg": "line added"
}[root@centos7 ~]# cat /etc/issue
\S
Kernel \r on an \mhello world
###上述同样的命令，再次执行的话是不会成功的，就是没有做操作（幂等性）

• 替换

###将文件中所有的Kernel替换为Ocen
[root@centos7 ~]# cat /etc/issue.net
\S
Kernel \r on an \m
[root@centos7 ~]# ansible all -m replace -a "path=/etc/issue.net regexp=Kernel replace=Ocen"
172.16.134.128 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "msg": "1 replacements made"
}[root@centos7 ~]# cat /etc/issue.net
\S
Ocen \r on an \m

8. user模块

• 实现linux系统账户管理

8.1 创建用户natasha

###创建用户娜塔莎
[root@centos7 ~]# ansible test -m user -a "name=natasha"
172.16.134.128 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "comment": "", "create_home": true, "group": 1001, "home": "/home/natasha", "name": "natasha", "shell": "/bin/bash", "state": "present", "system": false, "uid": 1001
}

8.2 创建tom用户并指定属性

[root@centos7 ansible]# ansible all -m user -a "name=tom uid=501  group=adm groups=daemon,root home=/home/tom"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini01 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "comment": "", "create_home": true, "group": 4, "groups": "daemon,root", "home": "/home/tom", "name": "tom", "shell": "/bin/bash", "state": "present", "system": false, "uid": 501
}[root@centos7 ansible]# id tom
uid=501(tom) gid=4(adm) 组=4(adm),0(root),2(daemon)

8.3 修改用户密码

###特定的格式password={{'abc'|password_hash('sha512')}}
###如果没有使用加密的话，账号会登录失败
[root@centos7 ansible]# ansible all -m user -a "name=natasha password={{'abc'|password_hash('sha512')}}"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "append": false, "changed": true, "comment": "", "group": 1001, "home": "/home/natasha", "move_home": false, "name": "natasha", "password": "NOT_LOGGING_PASSWORD", "shell": "/bin/bash", "state": "present", "uid": 1001
}

8.4 删除账户natasha

###仅仅把账户删除了
[root@centos7 ansible]# ansible all -m user -a "name=natasha state=absent"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini02 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "force": false, "name": "natasha", "remove": false, "state": "absent"
}

8.5 删除账户tom连同家目录邮箱等

[root@centos7 ansible]# ansible all -m user -a "name=tom state=absent remove=true"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "force": false, "name": "tom", "remove": true, "state": "absent"
}

9. yum_repository模块

9.1 配置yum源文件

###写配置文件
[root@centos7 ansible]# ansible all -m yum_repository -a "name=myyum description='hello world' baseurl=file:///mnt gpgcheck=0 enabled=1"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "repo": "myyum", "state": "present"
}
###生成的文件如下
[root@centos7 ansible]# cat /etc/yum.repos.d/myyum.repo
[myyum]
baseurl = file:///mnt
enabled = 1
gpgcheck = 0
name = hello world

9.2 修改yum源文件

###修改描述和签名检查
[root@centos7 ansible]# ansible all -m yum_repository -a "name=myyum description=test66  baseurl=file:///mnt gpgcheck=0 enabled=0"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7-mini01 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "repo": "myyum", "state": "present"
}###检查后文件如下
[root@centos7 ansible]# !cat
cat /etc/yum.repos.d/myyum.repo
[myyum]
baseurl = file:///mnt
enabled = 0
gpgcheck = 0
name = test66

9.3 删除yum源文件

###删除完之后，就没有myyum.repo这个文件了
[root@centos7 ansible]# ansible all -m yum_repository -a "name=myyum state=absent"
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
centos7 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": true, "repo": "myyum", "state": "absent"
}

10. yum模块

• yum模块安装、卸载、升级

• state状态有：present(安装)、absent(卸载)、latest(升级)

10.1 安装软件包

###安装unzip软件包
[root@centos7 ansible]# ansible all -m yum -a "name=unzip state=present"

10.2 升级软件包

###升级软件包
[root@centos7 ansible]# ansible all -m yum -a "name=unzip state=latest"
[root@centos7 ansible]# ansible all -m yum -a "name=* state=latest"

10.3 卸载软件包

###卸载软件包
[root@centos7 ansible]# ansible all -m yum -a "name=unzip state=absent"

11. service模块

• service服务管理模块
  • state：started|stopped|restarted
  • enabled：yes设置开机启动

###安装
[root@centos7 ansible]# ansible all -m yum -a "name=httpd state=present"
###启动
[root@centos7 ansible]# ansible all -m service -a "name=httpd state=restarted"
###开机自启
[root@centos7 ansible]# ansible all -m service -a "name=httpd state=restarted enabled=yes"

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