Ansible 运行 基于组多次任务
Ansible run task multiple times based on groups
您如何 运行 每个组的任务,而不是每个组一次?
我排除了 Run this on each host
任务 运行 每个 group_var 值一次。相反,它似乎只是选择一个然后 运行ning 它。
我计划稍后在多个服务器上打破这些,但现在它应该能够 运行 在一个自动缩放上,然后随着需求的增加轻松地将它分解成多个自动缩放组。
playbook.yml:
---
# Run with: ansible-playbook -i localhost, playbook.yml
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- rest-api
- msg-consumer
tasks:
- name: Say type
debug: var=item
with_items: run_type
group_vars/rest-api:
---
run_type: web
group_vars/msg-consumer:
---
run_type: consumer
输出 Ansible 1.8.2:
$ ansible-playbook -i localhost, playbook.yml
PLAY [Register Groups] ********************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Add the groups] ********************************************************
ok: [localhost]
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY RECAP ********************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=0
注意:可能是别的东西。我想我也可以弄乱我的剧本,但像下面这样分解任务:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- msg-consumer
tasks:
- name: Say type
debug: var=item
with_items: run_type
- name: Run this on each host
hosts:
- rest-api
tasks:
- name: Say type
debug: var=item
with_items: run_type
但是第二个剧本的输出是:
$ ansible-playbook -i localhost, playbook2.yml
PLAY [Register Groups] ********************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Add the groups] ********************************************************
ok: [localhost]
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY RECAP ********************************************************************
localhost : ok=6 changed=0 unreachable=0 failed=0
编辑:又一次访问数据的尝试,看起来 group_vars 的行为不像我预期的那样。以下输出 consumer
也两次。
-
# Run with: ansible-playbook -i localhost, playbook.yml
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- msg-consumer
- rest-api
tasks:
- name: What's your run type
debug: var=hostvars[groups[item][0]]['run_type']
with_items: group_names
目前这是我能想到的最好的:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add new host group
add_host:
name: 127.0.0.1
ansible_connection: local
groups: new-server
run_types:
- rest-api
- msg-consumer
- name: Add another new host group
add_host:
name: 127.0.0.2
ansible_connection: local
groups: new-server
run_types:
- nothing
- name: Test Run Types Server 1
hosts:
- new-server
tasks:
- name: What's your run type
debug: var=item
with_items: run_types
注意:主机必须不同才能工作,否则它将覆盖并使用与 add_host 一起使用的最后一个变量值。
请参阅我在 Ansible run task once per database-name 下的回答。
基本上,没有 run_once_per_group
,我所知道的最接近的方法是真正的 run_once
,它循环组。更复杂的是,没有 group_vars
字典变量。
---
- hosts: all
tasks:
- name: "do this once per group"
delegate_to: localhost
debug:
msg: "do something on {{hostvars[groups[item.key].0]['somevar']}} for group named {{item}}"
run_once: yes
with_dict: groups
when: item.key not in ['all', 'ungrouped']
最简单的方法是为主机名使用别名而不是真实主机:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the rest-api alias for my app
add_host:
name: my-app-rest-api
ansible_ssh_host: 127.0.0.1
groups: rest-api
- name: Add the msg-consumer alias for my app
add_host:
name: my-app-msg-consumer
ansible_ssh_host: 127.0.0.1
groups: msg-consumer
- name: Test Run Types
hosts:
- msg-consumer
- rest-api
tasks:
- name: What's your run type
debug: msg="Run Type of {{ ansible_ssh_host }} is {{ run_type }}"
现在您可以再次使用您的 group_vars:
group_vars/rest-api:
---
run_type: web
group_vars/msg-consumer:
---
run_type: consumer
输出将是:
PLAY [Register Groups] ********************************************************
TASK: [Add the rest-api alias for my app] *************************************
ok: [localhost]
TASK: [Add the msg-consumer alias for my app] *********************************
ok: [localhost]
PLAY [Test Run Types] *********************************************************
TASK: [What's your run type] **************************************************
ok: [my-app-msg-consumer] => {
"msg": "Run Type of 127.0.0.1 is consumer"
}
ok: [my-app-rest-api] => {
"msg": "Run Type of 127.0.0.1 is web"
}
您如何 运行 每个组的任务,而不是每个组一次?
我排除了 Run this on each host
任务 运行 每个 group_var 值一次。相反,它似乎只是选择一个然后 运行ning 它。
我计划稍后在多个服务器上打破这些,但现在它应该能够 运行 在一个自动缩放上,然后随着需求的增加轻松地将它分解成多个自动缩放组。
playbook.yml:
---
# Run with: ansible-playbook -i localhost, playbook.yml
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- rest-api
- msg-consumer
tasks:
- name: Say type
debug: var=item
with_items: run_type
group_vars/rest-api:
---
run_type: web
group_vars/msg-consumer:
---
run_type: consumer
输出 Ansible 1.8.2:
$ ansible-playbook -i localhost, playbook.yml
PLAY [Register Groups] ********************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Add the groups] ********************************************************
ok: [localhost]
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY RECAP ********************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=0
注意:可能是别的东西。我想我也可以弄乱我的剧本,但像下面这样分解任务:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- msg-consumer
tasks:
- name: Say type
debug: var=item
with_items: run_type
- name: Run this on each host
hosts:
- rest-api
tasks:
- name: Say type
debug: var=item
with_items: run_type
但是第二个剧本的输出是:
$ ansible-playbook -i localhost, playbook2.yml
PLAY [Register Groups] ********************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Add the groups] ********************************************************
ok: [localhost]
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY [Run this on each host] **************************************************
GATHERING FACTS ***************************************************************
ok: [localhost]
TASK: [Say type] **************************************************************
ok: [localhost] => (item=consumer) => {
"item": "consumer"
}
PLAY RECAP ********************************************************************
localhost : ok=6 changed=0 unreachable=0 failed=0
编辑:又一次访问数据的尝试,看起来 group_vars 的行为不像我预期的那样。以下输出 consumer
也两次。
-
# Run with: ansible-playbook -i localhost, playbook.yml
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the groups
add_host:
name: localhost
ansible_connection: local
groups: rest-api, msg-consumer
- name: Run this on each host
hosts:
- msg-consumer
- rest-api
tasks:
- name: What's your run type
debug: var=hostvars[groups[item][0]]['run_type']
with_items: group_names
目前这是我能想到的最好的:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add new host group
add_host:
name: 127.0.0.1
ansible_connection: local
groups: new-server
run_types:
- rest-api
- msg-consumer
- name: Add another new host group
add_host:
name: 127.0.0.2
ansible_connection: local
groups: new-server
run_types:
- nothing
- name: Test Run Types Server 1
hosts:
- new-server
tasks:
- name: What's your run type
debug: var=item
with_items: run_types
注意:主机必须不同才能工作,否则它将覆盖并使用与 add_host 一起使用的最后一个变量值。
请参阅我在 Ansible run task once per database-name 下的回答。
基本上,没有 run_once_per_group
,我所知道的最接近的方法是真正的 run_once
,它循环组。更复杂的是,没有 group_vars
字典变量。
---
- hosts: all
tasks:
- name: "do this once per group"
delegate_to: localhost
debug:
msg: "do something on {{hostvars[groups[item.key].0]['somevar']}} for group named {{item}}"
run_once: yes
with_dict: groups
when: item.key not in ['all', 'ungrouped']
最简单的方法是为主机名使用别名而不是真实主机:
---
- name: Register Groups
hosts: localhost
connection: local
tasks:
- name: Add the rest-api alias for my app
add_host:
name: my-app-rest-api
ansible_ssh_host: 127.0.0.1
groups: rest-api
- name: Add the msg-consumer alias for my app
add_host:
name: my-app-msg-consumer
ansible_ssh_host: 127.0.0.1
groups: msg-consumer
- name: Test Run Types
hosts:
- msg-consumer
- rest-api
tasks:
- name: What's your run type
debug: msg="Run Type of {{ ansible_ssh_host }} is {{ run_type }}"
现在您可以再次使用您的 group_vars:
group_vars/rest-api:
---
run_type: web
group_vars/msg-consumer:
---
run_type: consumer
输出将是:
PLAY [Register Groups] ********************************************************
TASK: [Add the rest-api alias for my app] *************************************
ok: [localhost]
TASK: [Add the msg-consumer alias for my app] *********************************
ok: [localhost]
PLAY [Test Run Types] *********************************************************
TASK: [What's your run type] **************************************************
ok: [my-app-msg-consumer] => {
"msg": "Run Type of 127.0.0.1 is consumer"
}
ok: [my-app-rest-api] => {
"msg": "Run Type of 127.0.0.1 is web"
}