編輯角色 apache 樣板

1. 在樣板目錄 templates 新增樣板檔案 index.html.j2，其中變數 ansible_fqdn

   [deyu1@kvm19 ansible]$ vim roles/apache/templates/index.html.j2
   [deyu1@kvm19 ansible]$ cat roles/apache/templates/index.html.j2
   Welcome to {{ ansible_fqdn }} on {{ ansible_default_ipv4.address }}
   

2. 其中主機名稱及 IP 可用 ansible -m setup 查詢，過濾字串 ansible_fqdn。

   [deyu1@kvm19 ansible]$ ansible kvm14 -m setup | grep fqdn
           "ansible_fqdn": "kvm14.deyu.wang",
   [deyu1@kvm19 ansible]$ ansible kvm14 -m setup -a "filter=ansible_fqdn"
   kvm14 | SUCCESS => {
       "ansible_facts": {
           "ansible_fqdn": "kvm14.deyu.wang",
           "discovered_interpreter_python": "/usr/libexec/platform-python"
       },
       "changed": false
   }
   

3. 其中主機名稱及 IP 可用 ansible -m setup 查詢，過濾字串 default_ipv4。

   [deyu1@kvm19 ansible]$ ansible kvm14 -m setup | grep ipv4
           "ansible_all_ipv4_addresses": [
           "ansible_default_ipv4": {
                   "tx_checksum_ipv4": "on",
               "ipv4": {
                   "tx_checksum_ipv4": "off [fixed]",
               "ipv4": {
   [deyu1@kvm19 ansible]$ ansible kvm14 -m setup -a "filter=ansible_default_ipv4"
   kvm14 | SUCCESS => {
       "ansible_facts": {
           "ansible_default_ipv4": {
               "address": "192.168.122.14",
               "alias": "ens3",
               "broadcast": "192.168.122.255",
               "gateway": "192.168.122.1",
               "interface": "ens3",
               "macaddress": "52:54:00:59:28:59",
               "mtu": 1500,
               "netmask": "255.255.255.0",
               "network": "192.168.122.0",
               "type": "ether"
           },
           "discovered_interpreter_python": "/usr/libexec/platform-python"
       },
       "changed": false
   }
   

4. 在任務主檔 main.yml 新增任務，將樣板 index.html.j2 複製到 /var/www/html/index.html。

   [deyu1@kvm19 ansible]$ vim roles/apache/tasks/main.yml
   [deyu1@kvm19 ansible]$ cat roles/apache/tasks/main.yml
   ---
   - name: install the latest version of Apache
     yum:
       name: httpd
       state: latest
   - name: Start service httpd
     service:
       name: httpd
       state: started
       enabled: yes
   
   - name: Enable service firewalld
     service:
       name: firewalld
       enabled: yes
       state: started
   
   - name: firewalld add http service
     firewalld:
       service: http
       permanent: yes
       state: enabled
       immediate: yes
   
   - name: Template a file
     template:
       src: index.html.j2
       dest: /var/www/html/index.html
   

5. 再查看 roles/apache 目錄，樣板目錄 templates 下有 index.html.j2：

   [deyu1@kvm19 ansible]$ tree roles/apache/
   roles/apache/
   ├── defaults
   │   └── main.yml
   ├── files
   ├── handlers
   │   └── main.yml
   ├── main.yml
   ├── meta
   │   └── main.yml
   ├── README.md
   ├── tasks
   │   └── main.yml
   ├── templates
   │   └── index.html.j2
   ├── tests
   │   ├── inventory
   │   └── test.yml
   └── vars
       └── main.yml
   
   8 directories, 10 files