如何在ansible中參考困難和長變數？

我想在 ansible中創建一些變數，例如delay和size

delay: */5 * * * * root stat --printf="\%Y\t\%n\n" /pool/slow/backup/daily/* | sed -ne 's/^\([0-9]\ \)\t\(.*\)$/node_backup_delay{directory="\2"} \1/p' > /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ && mv /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ /var/lib/node_exporter/textfile_collector/backup_delay.prom
size: */5 * * * * root du -sb /pool/slow/backup/daily/* | sed -ne 's/^\([0-9]\ \)\t\(.*\)$/node_directory_size_bytes{directory="\2"} \1/p' > /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ && mv /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ /var/lib/node_exporter/textfile_collector/directory_size.prom

但是當我開始劇本時我收到一個錯誤

PLAY [all] ***************************************************************************************************************************************************************************************************************************************************************
ERROR! Syntax Error while loading YAML.
  did not find expected alphabetic or numeric character

The error appears to be in '/home/dude/gitlab.com/office-deploy/code/inventories/host_vars/main1/main.yml': line 1, column 9, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


delay: */5 * * * * root stat --printf="\%Y\t\%n\n" /pool/slow/backup/daily/* | sed -ne 's/^\([0-9]\ \)\t\(.*\)$/node_backup_delay{directory="\2"} \1/p' > /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ && mv /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ /var/lib/node_exporter/textfile_collector/backup_delay.prom
        ^ here
We could be wrong, but this one looks like it might be an issue with
unbalanced quotes. If starting a value with a quote, make sure the
line ends with the same set of quotes. For instance this arbitrary
example:

    foo: "bad" "wolf"

Could be written as:

    foo: '"bad" "wolf"'

誰能告訴我應該使用哪些引號？

我使用 '''...''', ' "..." ' 沒有任何效果

uj5u.com熱心網友回復：

根據您對語法問題的描述和關于YAML 多行字串的評論，我用Block Scalar Style :folded和Block Chomping創建了一個小測驗：strip

---
- hosts: localhost
  become: false
  gather_facts: false

  vars:

    DELAY: >-
      */5 * * * * root stat --printf="\%Y\t\%n\n" /pool/slow/backup/daily/* | sed -ne 's/^\([0-9]\ \)\t\(.*\)$/node_backup_delay{directory="\2"} \1/p' > /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ && mv /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ /var/lib/node_exporter/textfile_collector/backup_delay.prom
    SIZE: >-
      */5 * * * * root du -sb /pool/slow/backup/daily/* | sed -ne 's/^\([0-9]\ \)\t\(.*\)$/node_directory_size_bytes{directory="\2"} \1/p' > /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ && mv /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ /var/lib/node_exporter/textfile_collector/directory_size.prom

  tasks:

  - name: Show var
    debug:
      var: DELAY

  - name: Show msg
    debug:
      msg: "{{ SIZE }}"

導致輸出

TASK [Show var] ***************************************************************************************************************************************
ok: [localhost] =>
  DELAY: '*/5 * * * * root stat --printf="\%Y\t\%n\n" /pool/slow/backup/daily/* | sed -ne ''s/^\([0-9]\ \)\t\(.*\)$/node_backup_delay{directory="\2"} \1/p'' > /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ && mv /var/lib/node_exporter/textfile_collector/backup_delay.prom.$$ /var/lib/node_exporter/textfile_collector/backup_delay.prom'

TASK [Show msg] ***************************************************************************************************************************************
ok: [localhost] =>
  msg: '*/5 * * * * root du -sb /pool/slow/backup/daily/* | sed -ne ''s/^\([0-9]\ \)\t\(.*\)$/node_directory_size_bytes{directory="\2"} \1/p'' > /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ && mv /var/lib/node_exporter/textfile_collector/directory_size.prom.$$ /var/lib/node_exporter/textfile_collector/directory_size.prom'

請注意，使用delay會導致

[WARNING]: Found variable using reserved name: delay

也許您的另一種方法可能是模板化或連接變數字串。

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