Ansible 中的 Json 解析
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Json parsing in Ansible
提问by trial999
I have to parse the output of the following command:
我必须解析以下命令的输出：
mongo <dbname> --eval "db.isMaster()"
which gives output as follows:
它给出如下输出：
{
"hosts" : [
"xxx:<port>",
"xxx:<port>",
"xxx:<port>"
],
"setName" : "xxx",
"setVersion" : xxx,
"ismaster" : true,
"secondary" : false,
"primary" : "xxx",
"me" : "xxx",
"electionId" : ObjectId("xxxx"),
"maxBsonObjectSize" : xxx,
"maxMessageSizeBytes" : xxxx,
"maxWriteBatchSize" : xxx,
"localTime" : ISODate("xxx"),
"maxWireVersion" : 4,
"minWireVersion" : 0,
"ok" : 1
}
I need to parse the above output to check the value of "ismaster" is true. Please let me know how i can do this in ansible.
我需要解析上面的输出来检查“ismaster”的值是否为真。请让我知道我如何在 ansible 中做到这一点。
At the moment i am simply checking that the text "ismaster" : true is shown in the output using the following code:
目前，我只是使用以下代码检查输出中是否显示文本 "ismaster" : true ：
tasks:
- name: Check if the mongo node is primary
shell: mongo <dbname> --eval "db.isMaster()"
register: output_text
- name: Run command on master
shell: <command to execute>
when: "'\"ismaster\\" : true,' in output_text.stdout"
However it would be nice to use Ansible's json processing to check the same. Please advise.
然而，使用 Ansible 的 json 处理来检查它会很好。请指教。
回答by Konstantin Suvorov
回答by alexei G.
Brother Coder, honestly I got a better Method, because for 3 weeks I just could not parse it with ansible filters as it was to complicated and never worked. I just curled the FILE and used JQ parser with regex. The only thing that is required is that JQ PARSER has to be installed on the server:
Coder 兄弟，老实说我得到了一个更好的方法，因为在 3 周的时间里，我无法使用 ansible 过滤器解析它，因为它很复杂而且从来没有工作过。我只是卷曲了 FILE 并使用了带有正则表达式的 JQ 解析器。唯一需要的是必须在服务器上安装 JQ PARSER：
To do it with ANSIBLE:
用 ANSIBLE 做到这一点：
Use host prompt to choose the envid in the
使用主机提示在
1. curl file like this:
1. curl 文件是这样的：
- name: Get json file shell: curl --output file.json -k -O https://example.tp.com/services/getMasterExtract.php?env_id={{envid}}&product=all&du=all&format=json&resolved=true args: chdir: /tmp/
- 名称：获取json文件shell：curl --output file.json -k -O https://example.tp.com/services/getMasterExtract.php?env_id={{envid}}&product=all&du=all&format=json&resolved=true参数：chdir：/tmp/
2. Extract the Value:
2. 提取值：
- name: get value from file shell: cat file.json | jq '.globals.environments.{{envid}}."legacy-claimcenter-hostname"' | sed 's/"//g'args: chdir: /tmp/ register: apiaccountclaims
- 名称：从文件shell 中获取值 ：cat file.json | jq '.globals.environments.{{envid}}."legacy-claimcenter-hostname"' | sed 's/"//g'args: chdir: /tmp/ register: apiaccountclaims
3. Register as Variable :
3. 注册为变量：
name: set-fact1 set_fact: claims1: "{{ apiaccountclaims.stdout }}"
- USE IT ANYWHERE:
name: Enter service tdiapiaccountclaims shell: sudo /usr/share/jbossas/bin/jboss-cli.sh -c --command='/system-property=tdigi.api.uri.edge.account.claims:add(value={{ claims1 }})'
名称：set-fact1 set_fact：claim1：“{{ apiaccountclaims.stdout }}”
- 在任何地方使用它：
名称：进入服务tdiapiaccountclaims shell：sudo /usr/share/jbossas/bin/jboss-cli.sh -c --command='/system-property=tdigi.api.uri.edge.account.claims:add(value= {{ claim1 }})'
Here is the playbook:
这是剧本：
hosts: "{{ hosts | default('all') }}" become: true
vars_prompt: - name: "envid" prompt: "Please put env ID"
tasks:
- name: Get json file shell: curl --output file.json -k -O https://example.tp.com/services/getMasterExtract.php?env_id={{envid}}&product=all&du=all&format=json&resolved=true args: chdir: /tmp/ - name: get value from file shell: cat file.json | jq '.globals.environments.{{envid}}."legacy-claimcenter-hostname"' | sed 's/"//g' args: chdir: /tmp/ register: tdiapiaccountclaims - name: set-fact1 set_fact: claims1: "{{ apiaccountclaims.stdout }}" - name: copy command file copy: src: "cli/systemprops2-2.cli" dest: "/opt/jboss/profiles/{{jboss_profile}}/configuration/" - name: backup standalone-full.xml shell: cp "/opt/jboss/profiles/{{jboss_profile}}/configuration/standalone-full.xml" "/opt/jboss/profiles/{{jboss_profile}}/configuration/standalone-full.xml.backup.old" - name: Delete Configs in file of standalone-full.xml shell: sudo /usr/share/jbossas/bin/jboss-cli.sh -c --file=systemprops2-2.cli args: chdir: /opt/jboss/profiles/{{ jboss_profile }}/configuration register: delvar - name: Enter service tdiapiaccountclaims shell: sudo /usr/share/jbossas/bin/jboss-cli.sh -c --command='/system-property=tdigi.api.uri.edge.account.claims:add(value={{ claims1 }})'
主机：“{{ hosts | default('all') }}” 变为：true
vars_prompt: - name: "envid" prompt: "请输入 env ID"
任务：
- name: Get json file shell: curl --output file.json -k -O https://example.tp.com/services/getMasterExtract.php?env_id={{envid}}&product=all&du=all&format=json&resolved=true args: chdir: /tmp/ - name: get value from file shell: cat file.json | jq '.globals.environments.{{envid}}."legacy-claimcenter-hostname"' | sed 's/"//g' args: chdir: /tmp/ register: tdiapiaccountclaims - name: set-fact1 set_fact: claims1: "{{ apiaccountclaims.stdout }}" - name: copy command file copy: src: "cli/systemprops2-2.cli" dest: "/opt/jboss/profiles/{{jboss_profile}}/configuration/" - name: backup standalone-full.xml shell: cp "/opt/jboss/profiles/{{jboss_profile}}/configuration/standalone-full.xml" "/opt/jboss/profiles/{{jboss_profile}}/configuration/standalone-full.xml.backup.old" - name: Delete Configs in file of standalone-full.xml shell: sudo /usr/share/jbossas/bin/jboss-cli.sh -c --file=systemprops2-2.cli args: chdir: /opt/jboss/profiles/{{ jboss_profile }}/configuration register: delvar - name: Enter service tdiapiaccountclaims shell: sudo /usr/share/jbossas/bin/jboss-cli.sh -c --command='/system-property=tdigi.api.uri.edge.account.claims:add(value={{ claims1 }})'
