提问人：Arun Karthick V 提问时间：8/31/2023 最后编辑：ZeitounatorArun Karthick V 更新时间：9/1/2023 访问量：165
使用 var 文件中的值从同一个 Jinja2 模板创建多个文件
Create multiple files from the same Jinja2 Template using values from a var file
问：
我需要创建多个文件，其中包含 Jinja2 模板文件 （server.properties） 的 var 文件中声明的值。我已经尝试了已知的方法来实现文件生成，但问题只是第一个变量更改。其他文件不会反映到此模板中，但文件创建得很完美。我在这篇文章中附加了必要的文件。
Main.yml
---
- name: Create server properties files
hosts: localhost
become: yes
become_user: root
gather_facts: true
vars:
t_file: server.properties
t_dir: /path/to/save/newfiles
tasks:
- name: Include vars file
include_vars:
file: common.yml
name: common
- name: Creating template file - server.properties.j2
template:
src: "{{ t_file }}"
dest: 'server.properties.j2'
common.yml
---
server:
- server_no: 1
- server_no: 2
node_id:
- node_id: 1
- node_id: 2
cqvoters:
- cq_voters: [email protected]:8080,[email protected]:8081,[email protected]:8082
- cq_voters: [email protected]:8080,[email protected]:8081,[email protected]:8082
listeners:
- listeners: SASL_SSL://web.example.com:18080,CONTROLLER://web.example.com:8080
- listeners: SASL_SSL://web.example.com:18081,CONTROLLER://web.example.com:8081
advertised:
- advertised_listeners: SASL_SSL://web.example.com:18080
- advertised_listeners: SASL_SSL://web.example.com:18081
log_dir:
- log_dir: /tmp/server1/kraft-combined-logs
- log_dir: /tmp/server2/kraft-combined-logs
server.properties:
node.id= "{{ node_id }}"
controller.quorum.voters= "{{ cqvoters }}"
############################# Socket Server Settings #############################
listeners= "{{ listeners }}"
advertised.listeners= "{{ advertised }}"
############################# Log Basics #############################
log.dirs= "{{ log_dir }}"
根据上面给出的内容，我需要创建 2 个文件（即 和 ） 替换为 ，例如，作为示例，最终输出应为：server.propertiesserver1.propertiesserver2.propertiescommon.ymlserver1.properties
node.id= 1
controller.quorum.voters= [email protected]:8080,[email protected]:8081,[email protected]:8082
Socket Server Settings #############################
listeners= SASL_SSL://web.example.com:18080,CONTROLLER://web.example.com:8080
advertised.listeners= SASL_SSL://web.example.com:18080
Log Basics #############################
log.dirs= /tmp/server1/kraft-combined-logs
答：
1赞
Zeitounator
9/1/2023
#1
你用一个不适应的数据结构让你的生活变得艰难。这是一个最小的例子，有一个更好的例子来实现你的总体目标。适应您的确切需求。
项目结构：
$ tree
.
├── playbook.yml
├── templates
│ └── server.properties.j2
└── vars
└── common.yml
2 directories, 3 files
vars/common.yml:
---
properties_by_nodes:
- node_id: 1
cqvoters: [email protected]:8080,[email protected]:8081,[email protected]:8082
listeners: SASL_SSL://web.example.com:18080,CONTROLLER://web.example.com:8080
advertised: SASL_SSL://web.example.com:18080
log_dir: /tmp/server1/kraft-combined-logs
- node_id: 2
cqvoters: [email protected]:8080,[email protected]:8081,[email protected]:8082
listeners: SASL_SSL://web.example.com:18081,CONTROLLER://web.example.com:8081
advertised: SASL_SSL://web.example.com:18081
log_dir: /tmp/server2/kraft-combined-logs
templates/server.properties.j2:
node.id= "{{ node_id }}"
controller.quorum.voters= "{{ cqvoters }}"
############################# Socket Server Settings #############################
listeners= "{{ listeners }}"
advertised.listeners= "{{ advertised }}"
############################# Log Basics #############################
log.dirs= "{{ log_dir }}"
playbook.yml:
- name: Create different properties files from variable
hosts: localhost
gather_facts: false
vars_files:
- common.yml
tasks:
- name: Create a properties file for each entry in properties_by_nodes
vars:
node_id: "{{ item.node_id }}"
cqvoters: "{{ item.cqvoters }}"
listeners: "{{ item.listeners }}"
advertised: "{{ item.advertised }}"
log_dir: "{{ item.log_dir }}"
ansible.builtin.template:
src: server.properties.j2
dest: "/tmp/server{{ node_id }}.properties"
loop: "{{ properties_by_nodes }}"
运行 playbook 会给出（请注意，使用具有正确内容的现有文件再次运行将报告“ok”而不是“changed”）
$ ansible-playbook playbook.yml
PLAY [Create different properties files from variable] ***********************
TASK [Create a properties file for each entry in properties_by_nodes] ********
changed: [localhost] => (item={'node_id': 1, 'cqvoters': '[email protected]:8080,[email protected]:8081,[email protected]:8082', 'listeners': 'SASL_SSL://web.example.com:18080,CONTROLLER://web.example.com:8080', 'advertised': 'SASL_SSL://web.example.com:18080', 'log_dir': '/tmp/server1/kraft-combined-logs'})
changed: [localhost] => (item={'node_id': 2, 'cqvoters': '[email protected]:8080,[email protected]:8081,[email protected]:8082', 'listeners': 'SASL_SSL://web.example.com:18081,CONTROLLER://web.example.com:8081', 'advertised': 'SASL_SSL://web.example.com:18081', 'log_dir': '/tmp/server2/kraft-combined-logs'})
PLAY RECAP *******************************************************************
localhost : ok=1 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
现在，我们可以检查文件是否已创建内容是否正确：
$ for f in /tmp/server*.properties; \
do echo -e "content of $f\n----"; cat $f; echo; done
content of /tmp/server1.properties
----
node.id= "1"
controller.quorum.voters= "[email protected]:8080,[email protected]:8081,[email protected]:8082"
############################# Socket Server Settings #############################
listeners= "SASL_SSL://web.example.com:18080,CONTROLLER://web.example.com:8080"
advertised.listeners= "SASL_SSL://web.example.com:18080"
############################# Log Basics #############################
log.dirs= "/tmp/server1/kraft-combined-logs"
content of /tmp/server2.properties
----
node.id= "2"
controller.quorum.voters= "[email protected]:8080,[email protected]:8081,[email protected]:8082"
############################# Socket Server Settings #############################
listeners= "SASL_SSL://web.example.com:18081,CONTROLLER://web.example.com:8081"
advertised.listeners= "SASL_SSL://web.example.com:18081"
############################# Log Basics #############################
log.dirs= "/tmp/server2/kraft-combined-logs"
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