jinja2模板,不多解释,请看例子

[root@LeoDevops jinjatwo]# cat  j1.yaml - hosts: u12  gather_facts: False  vars:    list: [1,2,3,4,5]    one:  "1"    str:  "string"    ansible: "heh"  tasks:    - name: run commands      shell: df -h      register: info    - name: debug print filter      debug: msg="{
   { info.stdout | pprint }}"    - name: debug conditionals filter      debug: msg="the run commands status is changed"      when: info|changed    - name: debug int capitalize filter      debug: msg="the int value {
   { one|int }} the lower value is {
   { str|capitalize }}"    - name: debug default filter      debug: msg="the variable value is {
   { ansible | default('ansible is not define')  }} "    - name: debug list max and min filter      debug: msg="the list max value is {
   { list|max }},the list min value is {
   { list|min }}"    - name: debug random filter      debug: msg="the list random value is {
   { list|random  }} and generate a random value is {
   { 1000| random(1,10)  }}"    - name: debug join filter      debug: msg="the join filter value is {
   { list|join('+')  }}"    - name: debug replace and regex_replace filter      debug: msg="the replace value is {
   { str| replace('t','T') }} , the regex_replace_value is {
   { str|regex_replace('.*tr(.*)$','\\1') }} "

1. info.stdout 使用pprint进行格式化
2. info的执行状态使用changed filter 进行判断
3. one的值进行int转变，然后对str的值进行capitalize格式化
4. 对ansible变量进行判断，如果该变量定义了就引用它的值，如果没有定义就使用default内值
5. 对list内取最大值和最小值
6. 对list内的值使用random filter随机挑选一个，然后随机生成1000以内的数字，step是10
7. 对list内的值使用join filter链接在一起。
8. 第八个是对str的值使用replace与regex_replace替换

运行结果如下

[root@LeoDevops jinjatwo]# ansible-playbook j1.yaml PLAY [u12] ************************************************************************************************************************************************************************************TASK [run commands] ***************************************************************************************************************************************************************************changed: [192.168.93.137]TASK [debug print filter] *********************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "u'Filesystem      Size  Used Avail Use% Mounted on\\n/dev/sda1        19G  3.0G   16G  17% /\\nudev            367M  4.0K  367M   1% /dev\\ntmpfs           150M  296K  150M   1% /run\\nnone            5.0M     0  5.0M   0% /run/lock\\nnone            374M     0  374M   0% /run/shm'"}TASK [debug conditionals filter] **************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the run commands status is changed"}TASK [debug int capitalize filter] ************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the int value 1 the lower value is String"}TASK [debug default filter] *******************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the variable value is heh "}TASK [debug list max and min filter] **********************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the list max value is 5,the list min value is 1"}TASK [debug random filter] ********************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the list random value is 1 and generate a random value is 241"}TASK [debug join filter] **********************************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the join filter value is 1+2+3+4+5"}TASK [debug replace and regex_replace filter] *************************************************************************************************************************************************ok: [192.168.93.137] => {    "msg": "the replace value is sTring , the regex_replace_value is ing "}PLAY RECAP ************************************************************************************************************************************************************************************192.168.93.137             : ok=9    changed=1    unreachable=0    failed=0