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 permissions
file: 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 worldfetch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 mareplace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 = BaseOsyum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 Server
Loaded: 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 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
myvg 1 0 0 wz--n- <5.00g <5.00g
rhel 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 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
myvg 2 0 0 wz--n- 19.99g 19.99g
rhel 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 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
mylv 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 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
mylv myvg -wi-a----- 4.00gfilesystem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 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
rhel 1 2 0 wz--n- <19.00g 0
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