blockinfile不断添加块 [英] blockinfile keeps adding the block

问题描述

我想使用blockinfile在我的ElasticSearch配置中添加一个文本块，但是每次我运行剧本时，该块都会添加到文件中-即使它已经存在.这是一个问题，因为ElasticSearch不仅获取最后一个值，而且在启动时会说您为此值有多个条目"(或类似的内容)而感到窒息.

I'd like to add a block of text to my ElasticSearch configuration using blockinfile, but every time I run my playbook, the block gets added to the file -- even when it already exists. This is a problem because ElasticSearch doesn't just take the last value, it chokes on startup saying "you have multiple entries for this value" (or something similar).

我的游戏如下:

  - name: configure elasticsearch
    blockinfile:
      dest: /etc/elasticsearch/elasticsearch.yml
      marker: "## added by ansible configuration"
      block: |
        network.host: 0.0.0.0
        path.data: /var/lib
        path.logs: /var/log/elasticsearch
        path.repo: /home/chris/elastic-backups
      state: present

但是第二次运行我的剧本后，我的elasticsearch.yml文件如下所示:

But after running my playbook a second time, my elasticsearch.yml file looks like:

## added by ansible configuration
network.host: 0.0.0.0
path.data: /var/lib
path.logs: /var/log/elasticsearch
path.repo: /home/chris/elastic-backups
## added by ansible configuration
network.host: 0.0.0.0
path.data: /var/lib
path.logs: /var/log/elasticsearch
path.repo: /home/chris/elastic-backups
## added by ansible configuration

有没有办法仅在不存在的情况下添加该块?

Is there a way to only add the block if it does not exist yet?

推荐答案

您应在marker参数中指定{mark}关键字:

You should specify {mark} keyword in the marker parameter:

marker: "## {mark} added by ansible (configuration elasticsearch)"

这将导致Ansible在块的开头和结尾处插入一行，从而将{mark}相应地替换为BEGIN和END:

This will cause Ansible to insert a line at the beginning and at the end of the block replacing {mark} accordingly with BEGIN and END:

## BEGIN added by ansible (configuration elasticsearch)
network.host: 0.0.0.0
path.data: /var/lib
path.logs: /var/log/elasticsearch
path.repo: /home/chris/elastic-backups
## END added by ansible (configuration elasticsearch)

否则，Ansible不知道该块的开始位置和结束位置，因此在每次运行时，它都会认为该块不存在并插入新的块.

Otherwise Ansible has no clue, where the block starts and where it ends, so on every run it considers the block is not present and inserts a new one.

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