安装RHEL

[root@localhost ~]# yum install rhel-system-roles.noarch

时间同步

[root@localhost ~]# tree date/
date/
├── ansible.cfg
├── inventory
├── main.yml
└── timesync
    ├── ansible_pytest_extra_requirements.txt
    ├── COPYING
    ├── custom_requirements.txt
    ├── defaults
    │   └── main.yml
    ├── handlers
    │   └── main.yml
    ├── library
    │   └── timesync_provider.sh
    ├── meta
    │   └── main.yml
    ├── molecule_extra_requirements.txt
    ├── pylint_extra_requirements.txt
    ├── pylintrc
    ├── pytest_extra_requirements.txt
    ├── README.html
    ├── README.md
    ├── tasks
    │   ├── main.yml
    │   └── set_vars.yml
    ├── templates
    │   ├── chrony.conf.j2
    │   ├── chronyd.sysconfig.j2
    │   ├── ntp.conf.j2
    │   ├── ntpd.sysconfig.j2
    │   ├── phc2sys.sysconfig.j2
    │   ├── ptp4l.conf.j2
    │   ├── ptp4l.sysconfig.j2
    │   └── timemaster.conf.j2
    ├── tests
    │   ├── inventory.yaml.j2
    │   ├── provision.fmf
    │   ├── roles
    │   ├── setup-snapshot.yml
    │   ├── tests_chrony.yml
    │   ├── tests_default_vars.yml
    │   ├── tests_default_wrapper.yml
    │   ├── tests_default.yml
    │   ├── tests_ntp_provider1.yml
    │   ├── tests_ntp_provider2.yml
    │   ├── tests_ntp_provider3.yml
    │   ├── tests_ntp_provider4.yml
    │   ├── tests_ntp_provider5.yml
    │   ├── tests_ntp_provider6.yml
    │   ├── tests_ntp_ptp.yml
    │   ├── tests_ntp.yml
    │   ├── tests_ptp_multi.yml
    │   └── tests_ptp_single.yml
    ├── tox.ini
    └── vars
        ├── CentOS_6.yml
        ├── CentOS_9.yml
        ├── Debian.yml
        ├── default.yml
        ├── Fedora_33.yml
        ├── main.yml
        ├── RedHat_6.yml
        └── RedHat_9.yml

时间同步实列

创建date目录用于存放playbook和角色目录
[root@localhost ~]# mkdir date

#将timeync的目录复制一份到当前目录并改名为timeync
[root@localhost date]# cp -r /usr/share/ansible/roles/rhel-system-roles.timesync timesync

编写playbook
[root@localhost date]# cat main.yml 
---
- hosts: web.example.com
  vars:
    timesync_ntp_servers:
      - hostname: time1aliyun.org
        pool: yes
        iburst: yes
    timezone: Asia/Shanghai

  roles:
     - timesync   //此处为date下的timeync
  tasks:
    - name: set timezone
      timezone:
        name: "{{ timezone }}"
[root@localhost timesync]# pwd
/usr/share/doc/rhel-system-roles/timesync  //此目录下存放着timeyns的模板yml
[root@localhost timesync]# ls
example-multiple-ntp-servers-playbook.yml  example-single-pool-playbook.yml  README.html  README.md
[root@localhost timesync]# cat example-multiple-ntp-servers-playbook.yml 
- hosts: "{{ target }}"
  vars:
    timesync_ntp_servers:
      - hostname: 0.pool.ntp.org
        iburst: yes
      - hostname: 1.pool.ntp.org
        iburst: yes
      - hostname: 2.pool.ntp.org
        iburst: yes
      - hostname: 3.pool.ntp.org
        iburst: yes
  roles:
    - rhel-system-roles.timesync

配置清单和ansible.cfg文件

[root@localhost date]# cat inventory 
[webservers]
web.example.com 

#ansible.cfg文件
[root@localhost date]# cat ansible.cfg 
inventory      = ./inventory

查看受控主机

[root@localhost ~]# head /etc/chrony.conf

```bash
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
pool 2.centos.pool.ntp.org iburst   //poll为centos.pool.ntp.org

# Record the rate at which the system clock gains/losses time.
driftfile /var/lib/chrony/drift

# Allow the system clock to be stepped in the first three updates
# if its offset is larger than 1 second.
makestep 1.0 3
[root@localhost date]# ansible-playbook main.yml 
[root@localhost ~]# head /etc/chrony.conf
#
# Ansible managed
#

pool time1aliyun.org iburst  //变为了main.yml里修改的ailiyun

# Allow the system clock to be stepped in the first three updates.
makestep 1.0 3

# Enable kernel synchronization of the real-time clock (RTC).

#查看chrond服务启动了且有开机自启
[root@localhost ~]# systemctl status chronyd.service 
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2022-06-14 16:08:32 CST; 58s ago
     Docs: man:chronyd(8)

SELinux

[root@localhost ~]# tree selinux_play/
selinux_play/
├── ansible.cfg
├── inventory
├── main.yml
└── selinux
    ├── ansible_pytest_extra_requirements.txt
    ├── COPYING
    ├── custom_requirements.txt
    ├── defaults
    │   └── main.yml
    ├── handlers
    │   └── main.yml
    ├── library
    │   ├── seboolean.py
    │   ├── sefcontext.py
    │   ├── selinux_modules_facts.py
    │   ├── selinux.py
    │   ├── selogin.py
    │   └── seport.py
    ├── meta
    │   ├── collection-requirements.yml
    │   └── main.yml
    ├── molecule_extra_requirements.txt
    ├── pylint_extra_requirements.txt
    ├── pytest_extra_requirements.txt
    ├── README.html
    ├── README.md
    ├── tasks
    │   ├── main.yml
    │   ├── selinux_load_module.yml
    │   └── set_facts_packages.yml
    ├── tests
    │   ├── linux-system-roles-selinux-test-a.pp
    │   ├── linux-system-roles-selinux-test-b.pp
    │   ├── linux-system-roles-selinux-test-c.pp
    │   ├── roles
    │   ├── selinux_apply_reboot.yml
    │   ├── selinux.config
    │   ├── selinux_config_restore.yml
    │   ├── selinux_config_save.yml
    │   ├── selinux_test_transitions.yml
    │   ├── set_selinux_variables.yml
    │   ├── setup-snapshot.yml
    │   ├── tests_all_purge.yml
    │   ├── tests_all_transitions.yml
    │   ├── tests_boolean.yml
    │   ├── tests_default_vars.yml
    │   ├── tests_default.yml
    │   ├── tests_fcontext.yml
    │   ├── tests_login.yml
    │   ├── tests_port.yml
    │   ├── tests_selinux_disabled.yml
    │   └── tests_selinux_modules.yml
    ├── tox.ini
    └── vars
        └── main.yml

SELinux实列

[root@localhost ~]# mkdir selinux_play
[root@localhost selinux_play]# cp -r /usr/share/ansible/roles/rhel-system-roles.selinux/ selinux

---
- hosts: web.example.com
  vars:
    selinux_policy: targeted
    selinux_state: enforcing 

  roles:
    - selinux
[root@localhost date]# cat inventory 
[webservers]
web.example.com 

#ansible.cfg文件
[root@localhost date]# cat ansible.cfg 
inventory      = ./inventory
[root@localhost ~]# getenforce 0  //修改为Permissive
Permissive
[root@localhost selinux_play]# ansible-playbook main.yml 
[root@localhost ~]# getenforce  //状态变为了enforcing
Enforcing