我有一部剧本triad-ptf。它运行一个名为ptf_install的角色。主机vars文件的变量ptfCount初始化为0。
如果ptfCount大于0，我希望ptf_install运行，否则什么也不做。
我认为，如果剧本实际检查ptfCount的值并退出而没有错误，那会更好。但我似乎无法弄清楚其语法。因此，该剧本不会失败，因为它与其他剧本一起运行，并且0 PTF并非错误。
我尝试了此操作，但结果出乎意料。前三个任务已作为详细here跳过，但第四个任务已执行，我不知道为什么。
剧本：triad-ptf.yml
- hosts: triad
become: yes
become_method: sudo
environment:
INFORMIXDIR: /usr/informix
PATH: "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/informix/bin:/usr/cbridge/bin:/usr/cbridge/jam/rh3:/root/bin"
vars:
playbook_name: triad-ptf.yml
pre_tasks:
- debug: var=ptfCount
roles:
- { role: notification_slack, color: "normal", message: "[Start] Run {{playbook_name}} playbook on {{ inventory_hostname }}, for {{cbMajor}}.{{cbMinor}}.{{cbBuild}} on Informix {{InformixServerVersion}}" }
- role: common
- { role: ptf_install, when: ptfCount > 0}
- role: motd
- { role: notification_slack, color: "good", message: "[Finish] Run {{playbook_name}} playbook on {{ inventory_hostname }}" }
- { role: ptf_install, when: ptfCount > 0}
角色ptf_install
- name: Include version specific PTF variables file
include_vars: "v{{cbMajor}}.{{cbMinor}}.{{cbBuild}}.yml"
tags: [ 'always' ]
- name: Check if working_directory exists for ptf download
stat:
path: "{{working_directory}}"
register: workingDirectory
tags: [ 'database' ,'downloadFiles']
- name: Create working_directory open to all
file:
path: "{{working_directory}}"
state: directory
mode: 0777
when: workingDirectory.stat.exists == False
tags: [ 'database' ,'downloadFiles']
- name: "Copy PTFs to the target"
become: false
maven_artifact:
group_id: com.companyname
artifact_id: cbridge
classifier: "cbptf{{cbMajor}}{{cbMinor}}{{cbBuild}}-{{item}}"
extension: "{{ptf_extension}}"
version: "{{cbMajor}}.{{cbMinor}}.{{cbBuild}}"
repository_url: "{{nexus_repo_url}}"
dest: "{{working_directory}}/cbptf{{cbMajor}}{{cbMinor}}{{cbBuild}}-{{item}}.{{ptf_extension}}"
timeout: 60
with_sequence: start=1 end="{{ptfCount}}"
when: ("'primary' in group_names")
tags: [ 'downloadFiles' ]
- name: Suspend the system before applying PTFs
shell: "cbsuspend"
when: ptfCount | int > 0
- name: "Apply the PTFs for Triad"
shell: "./installptf -y -s -d /var/log/eti/installer 2>&1 >> /var/log/eti/installer/cbridge_{{cbMajor}}.{{cbMinor}}.{{cbBuild}}.{{item}}_install_log.txt"
args:
chdir: "/usr/cbridge/bin"
with_sequence: start=1 end="{{ptfCount}}"
when: ("'primary' in group_names")
register: ptf_install_result
- name: Resume the system after applying PTFs
shell: "cbresume"
when: ptfCount | int > 0
调试输出显示该值为0
TASK [debug] *****************************************************************************************************************************************************************************************************$
ok: [cbt470.qa] => {
"ptfCount": 0
}
Ansible输出
TASK [ptf_install : Include version specific PTF variables file] **************************************************************************************************************************************************
skipping: [cbt470.qa]
TASK [ptf_install : Check if working_directory exists for ptf download] *******************************************************************************************************************************************
skipping: [cbt470.qa]
TASK [ptf_install : Create working_directory open to all] *********************************************************************************************************************************************************
skipping: [cbt470.qa]
TASK [ptf_install : Copy PTFs to the target] **********************************************************************************************************************************************************************
fatal: [cbt470.qa]: FAILED! => {"msg": "to count backwards make stride negative"}
PLAY RECAP ********************************************************************************************************************************************************************************************************
cbt470.qa : ok=22 changed=3 unreachable=0 failed=1