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ansible

第二天

以上学习了ping、command、shell、script模块，但一般不建议使用以上三个，因为这三个模块没有幂等性。举例如下：

[root@control ansible]# ansible test -a "mkdir /tmp/1234"[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 this message.
​
node1 | CHANGED | rc=0 >>
[root@control ansible]# ansible test -a "mkdir /tmp/1234"[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 this message.
​
node1 | FAILED | rc=1 >>
mkdir: 无法创建目录 “/tmp/1234”: 文件已存在non-zero return code
因为被控主机已经存在了要创建的目录，所以报错显示已存在
如果不想看到报错，可以使用专用的file模块
[root@control ansible]# ansible test -m file -a "path=/tmp/1234 state=directory"
node1 | SUCCESS => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": false,"gid": 0,"group": "root","mode": "0755","owner": "root","path": "/tmp/1234","size": 6,"state": "directory","uid": 0
}

file模块

查看使用帮助
EXAMPLES:
- name: Change file ownership, group and permissionsfile:   模块名。以下是它的各种参数path: /etc/foo.conf  要修改的文件的路径owner: foo   文件所有者group: foo   文件的所有组mode: '0644'  权限
根据上面的example，-m file -a的内容就是doc中把各参数的冒号换成=号
​
在test主机上创建/tmp/file.txt
[root@control ansible]# ansible test -m file -a "path=/tmp/file.txt state=touch"  touch是指如果文件不存在，则创建
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"dest": "/tmp/file.txt","gid": 0,"group": "root","mode": "0644","owner": "root","size": 0,"state": "file","uid": 0
}
[root@node1 ~]# ls /tmp | grep file.txt
file.txt
在test主机上创建/tmp/demo目录
[root@control ansible]# ansible test -m file -a "path=/tmp/demo state=directory"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"gid": 0,"group": "root","mode": "0755","owner": "root","path": "/tmp/demo","size": 6,"state": "directory","uid": 0
}
[root@node1 ~]# ls /tmp | grep demo
demo
在test主机上创建一个/tmp/file.txt文件，属主为sshd，属组为adn 权限为777
[root@control ansible]# ansible test -m file -a "path=/tmp/file.txt owner=sshd group=adm mode="0777""
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"gid": 4,"group": "adm","mode": "0777","owner": "sshd","path": "/tmp/file.txt","size": 0,"state": "file","uid": 74
}
[root@node1 ~]# ll /tmp | grep file
-rwxrwxrwx  1 sshd adm     0 11月  8 18:00 file.txt
在test主机上删除/tmp/file.txt文件
[root@control ansible]# ansible test -m file -a "path=/tmp/file.txt state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"path": "/tmp/file.txt","state": "absent"
}
在test主机上删除/tmp/demo目录
[root@control ansible]# ansible test -m file -a "path=/tmp/demo state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"path": "/tmp/demo","state": "absent"
}
在test主机上创建/etc/hosts的软连接，目标是/tmp/host.txt
[root@control ansible]# ansible test -m file -a "src=/etc/hosts dest=/tmp/host.txt state=link"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"dest": "/tmp/host.txt","gid": 0,"group": "root","mode": "0777","owner": "root","size": 10,"src": "/etc/hosts","state": "link","uid": 0
}
​

copy模块

用于将文件从控制端拷贝到被控端

常用选项：

src：源。控制端的文件路径

dest：目标。被控制端的文件路径

content: 内容。需要写到文件中的内容

[root@control ansible]# ansible test -m copy -a "src=a.txt dest=/root"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"checksum": "54e87908396f730ae24754dc967d141bee7a293f","dest": "/root/a.txt","gid": 0,"group": "root","md5sum": "5ce11a5724b80ca946683b6c626bdb6c","mode": "0644","owner": "root","size": 4,"src": "/root/.ansible/tmp/ansible-tmp-1699486007.0826297-54906651569985/source","state": "file","uid": 0
}
[root@node1 ~]# cat a.txt 
Aaa
绝对路径
[root@control ansible]# ansible test -m copy -a "src=/root/root.txt dest=/root"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"checksum": "552c0ba71b1046a083583ebf943cc9aa09f39a32","dest": "/root/root.txt","gid": 0,"group": "root","md5sum": "74cc1c60799e0a786ac7094b532f01b1","mode": "0644","owner": "root","size": 5,"src": "/root/.ansible/tmp/ansible-tmp-1699486076.8466651-150992524492280/source","state": "file","uid": 0
}
[root@node1 ~]# cat root.txt 
root
发送目录成功
[root@control ansible]# ansible test -m copy -a "src=/etc/security dest=/root/"
node1 | CHANGED => {"changed": true,"dest": "/root/","src": "/etc/security"
}
​
[root@node1 ~]# ls | grep test
[root@node1 ~]# ll | grep security
drwxr-xr-x  7 root root 4096 11月  8 18:31 security
前提是目录不能为空
如果 getenforce状态不为Disabled，需要再各个主机安装python3-libselinux软件包
在远程主机直接创建文件，添加内容
[root@control ansible]# ansible test -m copy -a "dest=/tmp/mytest.txt content='hello world'"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"checksum": "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed","dest": "/tmp/mytest.txt","gid": 0,"group": "root","md5sum": "5eb63bbbe01eeed093cb22bb8f5acdc3","mode": "0644","owner": "root","size": 11,"src": "/root/.ansible/tmp/ansible-tmp-1699486796.9039702-79725117871198/source","state": "file","uid": 0
}
[root@node1 ~]# cat /tmp/mytest.txt 
hello world

fetch模块

与copy模块相反，copy是上传，fetch是下载

常用选项：

src：源。被控制端的文件路径

dest：目标。控制端的文件路径

将test主机上的/etc/hostname下载到本地用户的家目录下
[root@control ansible]# ansible webservers -m fetch -a "src=/etc/hostname dest=~/"
node3 | CHANGED => {"changed": true,"checksum": "70e478f6fb7a1971d09496d109002c5809006a86","dest": "/root/node3/etc/hostname","md5sum": "3ce6701b5ee42becf085baf7368fe8ce","remote_checksum": "70e478f6fb7a1971d09496d109002c5809006a86","remote_md5sum": null
}
node4 | CHANGED => {"changed": true,"checksum": "5367c434083cf09560c19a3338c1d6caa791f36b","dest": "/root/node4/etc/hostname","md5sum": "a97ac14927fea0efc7a9733fe320cd99","remote_checksum": "5367c434083cf09560c19a3338c1d6caa791f36b","remote_md5sum": null
}
[root@control ansible]# ls ~/node3/etc/
hostname  
[root@control ansible]# ls ~/node4/etc/
hostname
不能下载目录
[root@control ansible]# ansible webservers -m fetch -a "src=/root/aaa dest=~/"
node4 | FAILED! => {"changed": false,"file": "/root/aaa","msg": "remote file is a directory, fetch cannot work on directories"
}
node3 | FAILED! => {"changed": false,"file": "/root/aaa","msg": "remote file is a directory, fetch cannot work on directories"
}

lineinfile模块

用于确保存目标文件中有某一行内容

常用选项：

path：待修改的文件路径

line: 写入文件的一行内容

regexp：正则表达式，用于查找文件中的内容

test组的主机,/etc/issue中一定要有一行hello world。如果该行不存在，则默认添加到文件结尾
[root@control ansible]# ansible test -m lineinfile -a "path=/etc/issue line='hello world'"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"backup": "","changed": true,"msg": "line added"
}
[root@node1 ~]# cat /etc/issue
\S
Kernel \r on an \m
hello world
test组中的主机，把/etc/issue中有hello的行，替换成chi le ma
[root@control ansible]# ansible test -m lineinfile -a "path=/etc/issue line='chi le ma' regexp=hello"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"backup": "","changed": true,"msg": "line replaced"
}
[root@node1 ~]# cat /etc/issue
\S
Kernel \r on an \m
chi le ma
[root@control ansible]# ansible test -m lineinfile -a "path=/etc/issue line='chi le ma' regexp=hello"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"backup": "","changed": true,"msg": "line added"
}
[root@node1 ~]# cat /etc/issue
\S
Kernel \r on an \m
chi le ma
chi le ma

replace模块

lineinfile会替换一行，replace可以替换关键词

常用选项：

path：待修改的文件路径

replace：将正则表达式查到的内容，替换成replace的内容

regexp: 正则表达式，用于查找文件中的内容

将test组中的主机上/etc/issue文件中的chi，替换成he
[root@node1 ~]# cat /etc/issue
\S
Kernel \r on an \m
chi le ma
chi le ma
[root@control ansible]# ansible test -m replace  -a "path=/etc/issue regexp=chi replace="he""
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"msg": "2 replacements made"
}
[root@node1 ~]# cat /etc/issue
\S
Kernel \r on an \m
he le ma
he le ma

​

文件操作综合练习

[root@control ansible]# cat exec.sh 
#!/bin/bash
ansible test -m file -a "path=/tmp/mydemo state=directory owner=adm group=adm mode=0777"
ansible test -m copy -a "src=/etc/hosts dest=/tmp/mydemo owner=adm group=adm mode=0600"
ansible test -m replace -a "path=/tmp/mydemo/hosts regexp='node5' replace='server5'"
ansible test -m fetch -a "src=/tmp/mydemo/hosts dest=/root/ansible/"

user模块

实现linux用户管理

常用选项：

name: 待创建的用户名

uid：用户ID

group：设置主组

groups：设置附加组

home：设置家目录

password：设置用户密码

state：状态。present表示创建，它是默认选项。absent表示删除

remove：删除家目录、邮箱等。值为yes或者true都可以

在test主机上创建个tom用户
[root@control ansible]# ansible test -m user -a "user=tom"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"comment": "","create_home": true,"group": 1000,"home": "/home/tom","name": "tom","shell": "/bin/bash","state": "present","system": false,"uid": 1000
}
[root@node1 ~]# cat /etc/passwd | grep ^tom
tom:x:1000:1000::/home/tom:/bin/bash
[root@control ansible]# ansible test -m user -a "name=jerry uid=1010 group=adm groups=daemon,root home=/home/jerry"
设置tom密码为123456，用sha512加密
[root@control ansible]# ansible test -m user -a "name=tom password={{'123456'|password_hash('sha512')}}"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"append": false,"changed": true,"comment": "","group": 1000,"home": "/home/tom","move_home": false,"name": "tom","password": "NOT_LOGGING_PASSWORD","shell": "/bin/bash","state": "present","uid": 1000
}
[root@node1 ~]# cat /etc/shadow | grep tom
tom:$6$Dfyqw6ty.pPwnyZm$SRpTqqORuCbPFGcdPuT8sNHHmIpHJAslaoDgk1RCA6gIAEEeg9tvz8MBxj7mGR1j4LV7GVN.1teZQ7OUaP51J1:19670:0:99999:7:::
删除tom用户，不删除家目录
[root@control ansible]# ansible test -m user -a "name=tom state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"force": false,"name": "tom","remove": false,"state": "absent"
}
删除jerry用户，同时删除家目录
[root@control ansible]# ansible test -m user -a "name=jerry state=absent remove=yes"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"force": false,"name": "jerry","remove": true,"state": "absent"
}
[root@node1 ~]# ls /home
tom

​

group模块

创建、删除组

常用选项：

name：待创建的组名

gid：组的ID号

state：prensent表示创建、它是默认选项。absent是删除

在test组的主机上创建名为devops的组
[root@control ansible]# ansible test -m group -a "name=devops state=present"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"gid": 1000,"name": "devops","state": "present","system": false}在test组的主机上删除名为devops的组
[root@control ansible]# ansible test -m group -a "name=devops state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"name": "devops","state": "absent"
}

yum_repository

用于配置yum

常用选项：

file：指定文件名

其他选项，请于文件内容对照

在test组中的主机上，配置yum
[root@control ansible]# ansible test -m yum_repository -a "file=myrepo name=App baseurl=ftp://192.168.88.240/rhel8/AppStream gpgcheck=no enabled=yes description=app"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"repo": "App","state": "present"
}
[root@node1 ~]# cat /etc/yum.repos.d/myrepo.repo 
[App]
baseurl = ftp://192.168.88.240/rhel8/AppStream
enabled = 1
gpgcheck = 0
name = app
再次执行
[root@control ansible]# ansible test -m yum_repository -a "file=myrepo name=BaseOs baseurl=ftp://192.168.88.240/rhel8/BaseOs gpgcheck=no enabled=yes description=BaseOs"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"repo": "BaseOs","state": "present"
}
[root@node1 ~]# cat /etc/yum.repos.d/myrepo.repo 
[App]
baseurl = ftp://192.168.88.240/rhel8/AppStream
enabled = 1
gpgcheck = 0
name = app
​
​
[BaseOs]
baseurl = ftp://192.168.88.240/rhel8/BaseOs
enabled = 1
gpgcheck = 0
name = BaseOs

yum模块

用于rpm软件包管理，如安装、升级、卸载

常用选项：

name：包名

state：状态。present表示安装，如果已安装则忽略；latest表示安装或升级到最新版本；absent表示卸载

在test组中的主机上安装wget
[root@control ansible]# ansible test -m yum -a "name=wget state=present"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"msg": "","rc": 0,"results": ["Installed: wget","Installed: wget-1.19.5-8.el8_1.1.x86_64"]
}
[root@node1 ~]# yum -y install wget
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
上次元数据过期检查：0:00:59 前，执行于 2023年11月09日 星期四 17时16分34秒。
软件包 wget-1.19.5-8.el8_1.1.x86_64 已安装。
依赖关系解决。
无需任何处理。
完毕！
在test组中的主机上卸载wget
[root@control ansible]# ansible test -m yum -a "name=wget state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"msg": "","rc": 0,"results": ["Removed: wget-1.19.5-8.el8_1.1.x86_64"]
}

​

service模块

用于控制服务。启动、关闭、重启、开机自启

常用选项：

name：控制的服务名

state： started表示启动 stopped表示关闭 restarted表示重启

enabled： yes表示设置开机自启；no表示设置开启不启动

在test主机上安装httpd
[root@control ansible]# ansible test -m yum -a "name=httpd state=latest"
在test主机上启动httpd，并设置它开机启动
[root@control ansible]# ansible test -m service -a "name=httpd state=started enabled=yes"
[root@node1 ~]# systemctl status httpd
● httpd.service - The Apache HTTP ServerLoaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)Active: active (running) since Thu 2023-11-09 17:29:59 EST; 2min 14s ago
​

逻辑卷相关模块

逻辑卷可以动态管理存储空间。可以对逻辑卷进行扩展或缩减

可以把硬盘或分区转换成物理卷PV；再把1到多个PV组合成卷组VG；然后在VG上划分逻辑卷LV。LV可以像普通分区一样，进行格式化、挂载

关闭虚拟机node1，为其添加2块20Gb的硬盘

LINUX下KVM虚拟机新加的硬盘，名称是/dev/vdb和/dev/vdc

vmware虚拟机新加的硬盘，名称是/dev/sdb和/dev/sdc

如果选nvme硬盘，名称可能是/dev/nvme0n1和/dev/nvme0n2

lvg模块

创建、删除卷组，修改卷组大小

常用选项：

vg：定义卷组名。vg： volume group

pvs：由哪些物理卷构成。pvs：physical volumes

先手工进行gpt分区
[root@node1 ~]# lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0            11:0    1  7.9G  0 rom  
nvme0n1       259:0    0   20G  0 disk 
├─nvme0n1p1   259:1    0    1G  0 part /boot
└─nvme0n1p2   259:2    0   19G  0 part ├─rhel-root 253:0    0   17G  0 lvm  /└─rhel-swap 253:1    0    2G  0 lvm  [SWAP]
nvme0n2       259:3    0   20G  0 disk 
[root@node1 ~]# fdisk /dev/nvme0n2 
​
欢迎使用 fdisk (util-linux 2.32.1)。
更改将停留在内存中，直到您决定将更改写入磁盘。
使用写入命令前请三思。
​
设备不包含可识别的分区表。
创建了一个磁盘标识符为 0xdf955d41 的新 DOS 磁盘标签。
​
命令(输入 m 获取帮助)：m
​
帮助：
​DOS (MBR)a   开关 可启动 标志b   编辑嵌套的 BSD 磁盘标签c   开关 dos 兼容性标志
​常规d   删除分区F   列出未分区的空闲区l   列出已知分区类型n   添加新分区p   打印分区表t   更改分区类型v   检查分区表i   打印某个分区的相关信息
​杂项m   打印此菜单u   更改 显示/记录 单位x   更多功能(仅限专业人员)
​脚本I   从 sfdisk 脚本文件加载磁盘布局O   将磁盘布局转储为 sfdisk 脚本文件
​保存并退出w   将分区表写入磁盘并退出q   退出而不保存更改
​新建空磁盘标签g   新建一份 GPT 分区表G   新建一份空 GPT (IRIX) 分区表o   新建一份的空 DOS 分区表s   新建一份空 Sun 分区表
​
​
命令(输入 m 获取帮助)：g 创建GPT分区表
已创建新的 GPT 磁盘标签(GUID: 66C691FD-9290-5A40-A7FE-7140003BB76B)。
​
命令(输入 m 获取帮助)：n  新建分区
分区号 (1-128, 默认  1):  回车，使用1号分区
第一个扇区 (2048-41943006, 默认 2048):  起始位置，回车
上个扇区，+sectors 或 +size{K,M,G,T,P} (2048-41943006, 默认 41943006): +5G  结束位置+5G
​
创建了一个新分区 1，类型为“Linux filesystem”，大小为 5 GiB。
​
命令(输入 m 获取帮助)：n 新建分区
分区号 (2-128, 默认  2):  回车 使用2号分区
第一个扇区 (10487808-41943006, 默认 10487808): 起始位置，回车  
上个扇区，+sectors 或 +size{K,M,G,T,P} (10487808-41943006, 默认 41943006):  
​
创建了一个新分区 2，类型为“Linux filesystem”，大小为 15 GiB。
​
命令(输入 m 获取帮助)：p
Disk /dev/nvme0n2：20 GiB，21474836480 字节，41943040 个扇区
单元：扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：gpt
磁盘标识符：66C691FD-9290-5A40-A7FE-7140003BB76B
​
设备               起点     末尾     扇区 大小 类型
/dev/nvme0n2p1     2048 10487807 10485760   5G Linux 文件系统
/dev/nvme0n2p2 10487808 41943006 31455199  15G Linux 文件系统
​
命令(输入 m 获取帮助)：w
分区表已调整。
将调用 ioctl() 来重新读分区表。
正在同步磁盘。
​
[root@node1 ~]# lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0            11:0    1  7.9G  0 rom  
nvme0n1       259:0    0   20G  0 disk 
├─nvme0n1p1   259:1    0    1G  0 part /boot
└─nvme0n1p2   259:2    0   19G  0 part ├─rhel-root 253:0    0   17G  0 lvm  /└─rhel-swap 253:1    0    2G  0 lvm  [SWAP]
nvme0n2       259:3    0   20G  0 disk 
├─nvme0n2p1   259:4    0    5G  0 part 
└─nvme0n2p2   259:5    0   15G  0 part 
​
在test组中的主机上创建名为myvg的卷组，该卷组由/dev/nvme0n2p1组成
[root@control ansible]# ansible test -m lvg -a "vg=myvg pvs=/dev/nvme0n2p1"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true
}
在node1上查看卷组
[root@node1 ~]# vgsVG   #PV #LV #SN Attr   VSize   VFree myvg   1   0   0 wz--n-  <5.00g <5.00grhel   1   2   0 wz--n- <19.00g     0
扩容卷组。卷组由PV构成，只要向卷组中加入新的PV，即可实现扩容
[root@control ansible]# ansible test -m lvg -a "vg=myvg pvs=/dev/nvme0n2p1,/dev/nvme0n2p2"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true
}
[root@node1 ~]# vgsVG   #PV #LV #SN Attr   VSize   VFree myvg   2   0   0 wz--n-  19.99g 19.99grhel   1   2   0 wz--n- <19.00g     0 
​

lvol模块

创建、删除逻辑卷，修改逻辑卷大小

常用选项

vg：指定在哪个卷组上创建逻辑卷

lv：创建的逻辑卷名。lv：logical volume

size：逻辑卷的大小，不写单位，以M为单位

在test组中的主机上创建名为mylv的逻辑卷，大小为2G
[root@control ansible]# ansible test -m lvol -a "vg=myvg lv=mylv size=2G"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"msg": ""
}
在node1查看逻辑卷
[root@node1 ~]# lvsLV   VG   Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convertmylv myvg -wi-a-----   2.00g                                                    root rhel -wi-ao---- <17.00g                                                    swap rhel -wi-ao----   2.00g     
mylv扩容至4GB
[root@control ansible]# ansible test -m lvol -a "vg=myvg lv=mylv size=4G"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"lv": "mylv","size": 2.0,"vg": "myvg"
}
[root@node1 ~]# lvsLV   VG   Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convertmylv myvg -wi-a-----   4.00g

filesystem模块

格式化逻辑卷

常用选项：

fstype: 指定文件系统类型

dev：指定要格式化的设备，可以是分区，可以是逻辑卷

在test组中的主机上，把/dev/myvg/mylv格式化为xfs
[root@control ansible]# ansible test -m filesystem -a "dev=/dev/myvg/mylv fstype=xfs"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true
}
在node1上查看格式化结果
[root@node1 ~]# blkid /dev/myvg/mylv
/dev/myvg/mylv: UUID="7d0f9e53-bbd8-4da3-9bd5-85ae90fc290b" TYPE="xfs"

mount模块

用于挂载文件系统

常用选项：

path：挂载点。如果挂载点不存在，自动创建。

src：待挂载的设备

fstype：文件系统类型

state： mounted，表示永久挂载

在test组中的主机上，把/dev/myvg/mylv永久挂在到/data
[root@control ansible]# ansible test -m mount -a "path=/data src=/dev/myvg/mylv fstype=xfs state=mounted"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"dump": "0","fstab": "/etc/fstab","fstype": "xfs","name": "/data","opts": "defaults","passno": "0","src": "/dev/myvg/mylv"
}
在node1上查看
[root@node1 ~]# cat /etc/fstab
/dev/mapper/rhel-root   /                       xfs     defaults        0 0
UUID=cb52237f-a2b2-423c-9d18-66892297474c /boot                   xfs     defaults        0 0
/dev/mapper/rhel-swap   swap                    swap    defaults        0 0
/dev/myvg/mylv /data xfs defaults 0 0
​
对逻辑卷mylv进行扩容到5G
ansible test -m lvol -a "vg=myvg lv=mylv size=5G"
[root@node1 ~]# df -h
文件系统               容量  已用  可用 已用% 挂载点
/dev/mapper/myvg-mylv  4.0G   61M  4.0G    2% /data
但挂载点不会更新为5G
扩容时应该加上resizefs参数
[root@control ansible]# ansible test -m lvol -a "vg=myvg lv=mylv size=7G resizefs=yes"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"lv": "mylv","size": 6.0,"vg": "myvg"
}
[root@node1 ~]# df -h |grep data
/dev/mapper/myvg-mylv  7.0G   83M  7.0G    2% /data
卸载
[root@control ansible]# ansible test -m mount -a "path=/data src=/dev/myvg/mylv fstype=xfs state=mounted"
[root@node1 ~]# df -h |grep data
重新挂载
[root@control ansible]# ansible test -m mount -a "path=/data src=/dev/myvg/mylv state=mounted fstype=xfs"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true,"dump": "0","fstab": "/etc/fstab","fstype": "xfs","name": "/data","opts": "defaults","passno": "0","src": "/dev/myvg/mylv"
}
[root@node1 ~]# df -h |grep data
/dev/mapper/myvg-mylv  7.0G   83M  7.0G    2% /data
永久卸载
[root@control ansible]# ansible test -m mount -a "path=/data state=absent"
[root@node1 ~]# cat /etc/fstab |grep data
[root@node1 ~]# df -h |grep data

删除逻辑卷

[root@control ansible]# ansible test -m lvol -a "vg=/dev/myvg lv=/dev/myvg/mylv state=absent force=yes"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true
}
[root@node1 ~]# lvs | grep mylv
​

删除卷组

[root@control ansible]# ansible test -m lvg -a "vg=myvg state=absent"
node1 | CHANGED => {"ansible_facts": {"discovered_interpreter_python": "/usr/libexec/platform-python"},"changed": true
}
[root@node1 ~]# vgsVG   #PV #LV #SN Attr   VSize   VFreerhel   1   2   0 wz--n- <19.00g    0