ansible playbook指令碼中有安裝jdk操作，並且設定環境變數後且source了 /etc/profile檔案，還會提示沒有JAVA_HOME
程式碼如下：

- name: install  jdk1.8 
  yum: name=jdk1.8.0_144.x86_64 state=present disablerepo=* enablerepo=packages

- name: check jdk variable 
  shell: cat /etc/profile
  register: result

#jdk_version 在變數檔案中有定義
- name: jdk variable configuration /etc/profile file
 
  shell: /bin/echo {{ item }} >> /etc/profile; source /etc/profile
  when: result.stdout.find('JAVA_HOME') == -1
  with_items:
     - export JAVA_HOME=/usr/java/jdk{{ jdk_version }}
     - export JAVA_BIN=/usr/java/jdk{{ jdk_version }}/bin
     - export PATH=$PATH:/usr/java/jdk{{ jdk_version }}/bin
     - export JRE_HOME
 
=/usr/java/jdk{{ jdk_version }}/jre
     - export CLASSPATH=.:/usr/java/jdk{{ jdk_version }}/lib:/usr/java/jdk{{ jdk_version }}/jre/lib
     - export JAVA_HOME JAVA_BIN PATH JRE_HOME CLASSPATH

在ansible環境下，控制其他機器，除了/etc/profile檔案需要修改，還需要修改/root/.bashrc檔案中的值

- name: check jdk variable 
  shell: cat /root/.bashrc
  register: bashrc_result

- name: jdk variable
 
 configuration /root/.bashrc file
  shell: /bin/echo {{ item }} >> /root/.bashrc; source /root/.bashrc
  when: bashrc_result.stdout.find('JAVA_HOME') == -1
  with_items:
     - export JAVA_HOME=/usr/java/jdk{{ jdk_version }}