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                # 設置環境變量 設置環境變量,可以使用lineinfile模塊 ```bash - name: lineinfile: 指定環境變量 dest: ~/.bash_profile regexp: ^ENV_VAR= line: ENV_VAR=value - name: 環境變量生效 shell: 'source ~/.bash_profile' - name: 獲取環境變量 #通過register將環境變量保存到自定義的變量中,以便后續任務使用 shell: 'echo $ENV_VAR' register: env_var - name: 打印環境變量 debug: msg: "{{env_var.stdout}}" ``` # 預定義環境變量 對于某一個play來說,我們可以使用`environment`指令來設置單獨的環境變量 例如:我們要為一個下載任務設置http代理 ```bash - name: 使用指定的代理服務器下載文件 get_url: url: http://www.expmple.com/file.tar.gz dest: /tmp/ environment: http_proxy: http://example-proxy:80/ ``` ```bash --- - hosts: 172.18.113.82 gather_facts: false vars: tasks: - name: test shell: "echo $username" register: foo environment: username: wms - name: print debug: msg: "{{foo}}" ``` 我們可以將環境變量定義到vars指令中,或者外部的變量文件中 ```bash --- - hosts: 172.18.113.82 gather_facts: false vars: env_vars: username: woms tasks: - name: test shell: "echo $username" register: foo environment: "{{env_vars}}" - name: print debug: msg: "{{foo}}" ``` # playbook級別設置環境變量 ```bash - hosts: testhost roles: - php - nginx environment: http_proxy: http://proxy.example.com:8080 ```
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