题目
1、使用debug模块，显示当前受管主机的dns服务器的ip地址。
2、将createuser.fact文件传输到受管主机上作为自定义事实变量文件（/etc/ansible/facts.d/），该文件的内容如下：
[general]
username = wujing
mima = $6$UAxRbhT3kyc=$AxQfYYP8dhCv750tH.rmrmv690ugT/lZU8OGEqSs7xZR0rEvSIurs4w/W88wUiY3hNnZBWS4uCaGUCdztI9An.
使用username和mima变量创建用户并设置该用户的密码。
3、向受管主机的/home/file文件里面写入内容如下：
hostname=当前主机的名字
memory=当前主机的内存大小
BIOS version=当前主机的bios的版本
distribution=当前linux主机的发行版本信息
Size of disk device is 当前主机的磁盘大小
答案
第一题
1、使用debug模块，显示当前受管主机的dns服务器的ip地址。
[admin@centos7_server ~]$ vim test3.yml
---
- name: cat
hosts: web
tasks:
- name: print ipv4
debug:
var: ansible_default_ipv4.address
- name: print dns
debug:
var: ansible_dns.nameservers
[admin@centos7_server ~]$ ansible-playbook test3.yml
PLAY [cat] *******************************************************************************************************************************************
TASK [Gathering Facts] *******************************************************************************************************************************
ok: [node1]
ok: [node2]
TASK [print ipv4] ************************************************************************************************************************************
ok: [node1] => {
"ansible_default_ipv4.address": "192.168.182.128"
}
ok: [node2] => {
"ansible_default_ipv4.address": "192.168.182.132"
}
TASK [print dns] *************************************************************************************************************************************
ok: [node1] => {
"ansible_dns.nameservers": [
"192.168.182.2"
]
}
ok: [node2] => {
"ansible_dns.nameservers": [
"192.168.182.2"
]
}
PLAY RECAP *******************************************************************************************************************************************
node1 : ok=3 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
node2 : ok=3 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
第二题
2、将createuser.fact文件传输到受管主机上作为自定义事实变量文件（/etc/ansible/facts.d/），该文件的内容如下：
[general]
username = wujing
mima = $6$UAxRbhT3kyc=$AxQfYYP8dhCv750tH.rmrmv690ugT/lZU8OGEqSs7xZR0rEvSIurs4w/W88wUiY3hNnZBWS4uCaGUCdztI9An.
使用username和mima变量创建用户并设置该用户的密码。
[admin@centos7_server ~]$ cat createuser.fact
[general]
username = wujing
mima = $6$UAxRbhT3kyc=$AxQfYYP8dhCv750tH.rmrmv690ugT/lZU8OGEqSs7xZR0rEvSIurs4w/W88wUiY3hNnZBWS4uCaGUCdztI9An.
[admin@centos7_server ~]$ cat test3.yml
---
- name: work
hosts: web
tasks:
# - name: print ipv4
# debug:
# var: ansible_default_ipv4.address
# - name: print dns
# debug:
# var: ansible_dns.nameservers
- name: copy file
copy:
src: /home/admin/createuser.fact
dest: /etc/ansible/facts.d/
- name: create
hosts: web
tasks:
- name: debug username
debug:
var: ansible_facts.ansible_local.createuser.general.username
- name: debug mima
debug:
var: ansible_facts.ansible_local.createuser.general.mima
- name: create user
user:
name: "{
{ ansible_facts.ansible_local.createuser.general.username }}"
password: "{
{ ansible_facts.ansible_local.createuser.general.mima }}"
[admin@centos7_server ~]$ ansible-playbook test3.yml
PLAY [work] *******************************************************************************************************
TASK [Gathering Facts] ********************************************************************************************
ok: [node1]
ok: [node2]
TASK [copy file] **************************************************************************************************
changed: [node1]
changed: [node2]
PLAY [create] *****************************************************************************************************
TASK [Gathering Facts] ********************************************************************************************
ok: [node2]
ok: [node1]
TASK [debug username] *********************************************************************************************
ok: [node1] => {
"ansible_facts.ansible_local.createuser.general.username": "wujing"
}
ok: [node2] => {
"ansible_facts.ansible_local.createuser.general.username": "wujing"
}
TASK [debug mima] *************************************************************************************************
ok: [node1] => {
"ansible_facts.ansible_local.createuser.general.mima": "$6$UAxRbhT3kyc=$AxQfYYP8dhCv750tH.rmrmv690ugT/lZU8OGEqSs7xZR0rEvSIurs4w/W88wUiY3hNnZBWS4uCaGUCdztI9An."
}
ok: [node2] => {
"ansible_facts.ansible_local.createuser.general.mima": "$6$UAxRbhT3kyc=$AxQfYYP8dhCv750tH.rmrmv690ugT/lZU8OGEqSs7xZR0rEvSIurs4w/W88wUiY3hNnZBWS4uCaGUCdztI9An."
}
TASK [create user] ************************************************************************************************
changed: [node1]
changed: [node2]
PLAY RECAP ********************************************************************************************************
node1 : ok=6 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
node2 : ok=6 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
第三题
3、向受管主机的/home/file文件里面写入内容如下：
hostname=当前主机的名字 inventory_hostname
memory=当前主机的内存大小 ansible_memory_mb.swap.total
BIOS version=当前主机的bios的版本 ansible_bios_version
distribution=当前linux主机的发行版本信息 ansible_distribution_version
Size of disk device is 当前主机的磁盘大小 ansible_devices.dm-0.size
[admin@centos7_server ~]$ vim test5.yml
---
- hosts: all
tasks:
- shell: touch /home/file
- name: hostname
lineinfile:
path: /home/file
regexp: '^hostname'
line: hostname={
{ ansible_facts.hostname }}
- name: memory
lineinfile:
path: /home/file
regexp: '^memory'
line: memory={
{ ansible_facts.memtotal_mb }}
- name: bios_version
lineinfile:
path: /home/file
regexp: '^bios_version'
line: bios_version={
{ ansible_facts.bios_version }}
- name: distribution
lineinfile:
path: /home/file
regexp: '^distribution'
line: distribution={
{ ansible_facts.distribution }}
- hosts: node2
tasks:
- name: devices.nvme0n1.size
lineinfile:
path: /home/file
regexp: '^devices.nvme0n1.size'
line: devices.nvme0n1.size ={
{ ansible_facts.devices.nvme0n1.size }}
- hosts: node1
tasks:
- name: devices.sda.size
lineinfile:
path: /home/file
regexp: '^devices.sda.size'
line: devices.sda.size ={
{ ansible_facts.devices.sda.size }}
[admin@centos7_server ~]$ ansible-playbook test5.yml
PLAY [all] ********************************************************************************************************
TASK [Gathering Facts] ********************************************************************************************
ok: [node2]
ok: [node1]
TASK [shell] ******************************************************************************************************
[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.
changed: [node1]
changed: [node2]
TASK [hostname] ***************************************************************************************************
ok: [node2]
ok: [node1]
TASK [memory] *****************************************************************************************************
ok: [node1]
ok: [node2]
TASK [bios_version] ***********************************************************************************************
ok: [node1]
ok: [node2]
TASK [distribution] ***********************************************************************************************
ok: [node2]
ok: [node1]
PLAY [node2] ******************************************************************************************************
TASK [Gathering Facts] ********************************************************************************************
ok: [node2]
TASK [devices.nvme0n1.size] ***************************************************************************************
ok: [node2]
PLAY [node1] ******************************************************************************************************
TASK [Gathering Facts] ********************************************************************************************
ok: [node1]
TASK [devices.sda.size] *******************************************************************************************
changed: [node1]
PLAY RECAP ********************************************************************************************************
node1 : ok=8 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
node2 : ok=8 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
[root@oneil2 home]# cat /home/file
hostname=oneil2
memory=1790
bios_version=6.00
distribution=RedHat
devices.sda.size =50.00 GB
[root@oneil1 ~]# cat /home/file
hostname=oneil1
memory=1790
bios_version=6.00
distribution=RedHat
devices.nvme0n1.size =30.00 GB