Ansible：循环通过复杂变量以访问同一任务下的不同层的方法
为了能够在同一模块/任务中调用来自变量不同层的项，在Ansible play中循环使用复杂字典变量的正确方法是什么 所讨论的变量如下所示（但它可以是任意数量的层，到目前为止，我只有大约3层）： 任务包括在同一shell模块下或模板中使用安装路径（第1层）和数据库参数（第3层）创建数据库 例如（任务应该看起来像这样），但使用正确的循环方法：Ansible：循环通过复杂变量以访问同一任务下的不同层的方法,ansible,Ansible,为了能够在同一模块/任务中调用来自变量不同层的项，在Ansible play中循环使用复杂字典变量的正确方法是什么 所讨论的变量如下所示（但它可以是任意数量的层，到目前为止，我只有大约3层）： 任务包括在同一shell模块下或模板中使用安装路径（第1层）和数据库参数（第3层）创建数据库 例如（任务应该看起来像这样），但使用正确的循环方法： - name: Creating the databases become_user: "{{ item.0.instances.username }}"
- name: Creating the databases
become_user: "{{ item.0.instances.username }}"
shell: "./db2 create database {{ item.1.name }} using pagesize {{ item.1.pagesize }}"
args:
chdir: "{{ item.0.install_path }}/bin"
with_subelements:
- "{{ installation }}"
- instances.databases.clm
谢谢大家! 在ansible中做这样的事情不是一件小事，因为ansible中的循环是一维的。不过，有一种方法很简单，可以使用嵌套的。假设我将所有变量放在
vars.ymlansible playbook playbook-nested.yml-e@vars.ymlPLAY [localhost] ***************************************************************
TASK [setup] *******************************************************************
ok: [localhost]
TASK [pass version forward] ****************************************************
included: /home/user/instances.yml for localhost
included: /home/user/instances.yml for localhost
TASK [Pass instance forward] ***************************************************
included: /home/user/databases.yml for localhost
TASK [echo command] ************************************************************
ok: [localhost] => (item={u'state': u'absent', u'name': u'RQM', u'pagesize': 32768}) => {
"item": {
"name": "RQM",
"pagesize": 32768,
"state": "absent"
},
"msg": "./db2 create database RQM using pagesize 32768"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'LQE', u'pagesize': 16384}) => {
"item": {
"name": "LQE",
"pagesize": 16384,
"state": "absent"
},
"msg": "./db2 create database LQE using pagesize 16384"
}
TASK [Pass instance forward] ***************************************************
included: /home/user/databases.yml for localhost
included: /home/user/databases.yml for localhost
TASK [echo command] ************************************************************
ok: [localhost] => (item={u'state': u'present', u'name': u'JTS', u'pagesize': 32768}) => {
"item": {
"name": "JTS",
"pagesize": 32768,
"state": "present"
},
"msg": "./db2 create database JTS using pagesize 32768"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'CCM', u'pagesize': 16384}) => {
"item": {
"name": "CCM",
"pagesize": 16384,
"state": "absent"
},
"msg": "./db2 create database CCM using pagesize 16384"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'QM', u'pagesize': 32768}) => {
"item": {
"name": "QM",
"pagesize": 32768,
"state": "absent"
},
"msg": "./db2 create database QM using pagesize 32768"
}
TASK [echo command] ************************************************************
skipping: [localhost]
PLAY RECAP *********************************************************************
localhost : ok=8 changed=0 unreachable=0 failed=0
数据库我想您也可以使用较低级别上的嵌套_循环。Andrew，非常感谢您用我在其他任何地方都找不到的宝贵信息来启发我！！我有这个任务：
-name:echo命令debug:msg=“安装值为{{installation[v].installations}，用户{{installation[v].instances[I].username}}，数据库{{{installation[v].instances[I].databases[d].name}{************************************************************确定：[localhost]=>{“msg”：“./db2如果值为真，则使用用户inst1和数据库名称JTS创建数据库”}- hosts: localhost
tasks:
- name: pass version forward
include: instances.yml v="{{ version_item }}"
with_items: "{{ installation }}"
loop_control:
loop_var: version_item
- name: Pass instance forward
include: databases.yml i={{ instance_item }}
with_items: "{{ installation[v].instances }}"
loop_control:
loop_var: instance_item
- name: echo command
debug: msg="./db2 create database {{ item.name }} using pagesize {{ item.pagesize }}"
with_items: "{{ installation[v].instances[i].databases.clm }}"
when: installation[v].instances[i].databases.clm is defined
PLAY [localhost] ***************************************************************
TASK [setup] *******************************************************************
ok: [localhost]
TASK [pass version forward] ****************************************************
included: /home/user/instances.yml for localhost
included: /home/user/instances.yml for localhost
TASK [Pass instance forward] ***************************************************
included: /home/user/databases.yml for localhost
TASK [echo command] ************************************************************
ok: [localhost] => (item={u'state': u'absent', u'name': u'RQM', u'pagesize': 32768}) => {
"item": {
"name": "RQM",
"pagesize": 32768,
"state": "absent"
},
"msg": "./db2 create database RQM using pagesize 32768"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'LQE', u'pagesize': 16384}) => {
"item": {
"name": "LQE",
"pagesize": 16384,
"state": "absent"
},
"msg": "./db2 create database LQE using pagesize 16384"
}
TASK [Pass instance forward] ***************************************************
included: /home/user/databases.yml for localhost
included: /home/user/databases.yml for localhost
TASK [echo command] ************************************************************
ok: [localhost] => (item={u'state': u'present', u'name': u'JTS', u'pagesize': 32768}) => {
"item": {
"name": "JTS",
"pagesize": 32768,
"state": "present"
},
"msg": "./db2 create database JTS using pagesize 32768"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'CCM', u'pagesize': 16384}) => {
"item": {
"name": "CCM",
"pagesize": 16384,
"state": "absent"
},
"msg": "./db2 create database CCM using pagesize 16384"
}
ok: [localhost] => (item={u'state': u'absent', u'name': u'QM', u'pagesize': 32768}) => {
"item": {
"name": "QM",
"pagesize": 32768,
"state": "absent"
},
"msg": "./db2 create database QM using pagesize 32768"
}
TASK [echo command] ************************************************************
skipping: [localhost]
PLAY RECAP *********************************************************************
localhost : ok=8 changed=0 unreachable=0 failed=0