Question

我创建了一个ansible脚本，用于备份数据库，销毁，创建和指向备份到新创建的数据库：

 - name: Backing up database
   command: pg_dump --schema-only --file=image.dump.20100217 image

 - name: Destroying Current Database
   command: time dropdb image

 - name: Creating Database
   postgresql_db: name=image
                  owner='ryan'

 - name: Pointing newly created DB to Backed up DB
   command: psql image < image.dump.20100217

一切正常，直到它试图指向备份的数据库。 Ansible不处理<符号并最终崩溃：

failed: [192.168.x.x] => {"changed": true, "cmd": ["psql", "image", "<", "image.dump.20100217"], "delta": "0:00:00.003229", "end": "2015-08-19 11:26:21.796224", "rc": 2, "start": "2015-08-19 11:26:21.792995", "warnings": []}
stderr: psql: warning: extra command-line argument "image.dump.20100217" ignored
psql: FATAL:  role "<" does not exist

FATAL: all hosts have already failed -- aborting

有没有人对如何解决这个问题有任何建议？

Answer 1

没有测试过，但有问题的角色的最终诀窍是将它放入Jinja表达式中：

command: psql image {{ "<" }} image.dump.20100217

我无法在Ansible 1.9.2中重现这一点。这是我测试的：

- command: echo psql image < image.dump.20100217
  register: x
- debug: var=x

Answer 2

使用模块'shell'而不是'command'

---
name: Pointing newly created DB to Backed up DB
shell: psql image < image.dump.20100217

使用＆lt; Ansible中的符号

2 个答案: