Ansible 优化playbook,使其与shell模块等幂
我正在使用ansible自动化堆栈部署。我使用“shell”或“command”模块来执行大部分任务。因此,为了使playbook具有shell和module的幂等元,我修改了playbook,如下所示Ansible 优化playbook,使其与shell模块等幂,ansible,ansible-playbook,idempotent,Ansible,Ansible Playbook,Idempotent,我正在使用ansible自动化堆栈部署。我使用“shell”或“command”模块来执行大部分任务。因此,为了使playbook具有shell和module的幂等元,我修改了playbook,如下所示 - name: Task1 shell: 'source /etc/nova/openrc && heat stack-show myne01 | tee stack_show.log' args: creates: stack_show.log regist
- name: Task1
shell: 'source /etc/nova/openrc && heat stack-show myne01 | tee stack_show.log'
args:
creates: stack_show.log
register: list
- debug: var=list.stdout_lines
ignore_errors: yes
- name: Delete stack-show.log
file: path=/home/wrsroot/stack_show.log state=absent
when: "list.rc != 0"
- name: Failed the stack
shell: "echo 'stack is failed'"
when: "list.rc != 0"
failed_when: "list.rc != 0"
这里的流程是:
1) 显示堆栈状态2) 如果堆栈执行失败,请忽略错误并删除“stack_show.log”文件,以便重新运行Anisable时不会跳过此任务。
3) 如果堆栈执行失败,则任务失败 如果有更好的方法,请提出建议
为了在playbook中添加幂等性,我为每个“shell”模块添加了9行代码。这让我的剧本变得非常大。你只需要在:false时更改
就可以成为幂等的。
此外,我认为你可以更简单地做到这一点:
- name: Task1
shell: bash -c 'set -o pipefail;source /etc/nova/openrc && heat stack-show myne01 | tee stack_show.log'
changed_when: false
args:
creates: stack_show.log
register: list
- name: Delete stack-show.log
file: path=/home/wrsroot/stack_show.log state=absent
changed_when: false
# You don't need this because file will deleted if exists
# when: "list.rc != 0"
# You don't need it because command will failed
# set -o pipefail
#- name: Failed the stack
# shell: "echo 'stack is failed'"
# when: "list.rc != 0"
# failed_when: "list.rc != 0"
你试试看
tasks:
- block:
- shell: bash -c 'set -o pipefail;source /etc/nova/openrc && heat stack-show myne01 | tee stack_show.log'
changed_when: false
args:
creates: stack_show.log
register: list
always:
- debug: msg="this always executes"
- name: Delete stack-show.log
file: path=/home/wrsroot/stack_show.log state=absent
changed_when: false