使用 Ansible 设置不同的 ORACLE_HOME 和 PATH 环境变量

问题描述

我目前正在查询多个数据库并捕获查询结果

Im currently querying multiple databases and capturing the results of the query

我这样做的方式是，我编写一个复制shell脚本的任务，如下所示

The way Im doing it is, Im writing a task which copies a shell script, something like below

#!/bin/bash
source $HOME/bin/gsd_xenv $1 &> /dev/null

sqlplus -s <<EOF
/ as sysdba
set heading off


select d.name||','||i.instance_name||','||i.host_name||';' from v\$database d,v\$instance i;

EOF

在剧本中，我写的任务如下:

In the playbook, Im writing the task as below:

- name: List Query [Host and DB]
  shell: "/tmp/sqlscript/sql_select.sh {{item}} >> /tmp/sqlscript/output.out"
  become: yes
  become_method: sudo
  become_user: oracle
  environment:
    PATH: "/home/oracle/bin:/usr/orasys/12.1.0.2r10/bin:/usr/bin:/bin:/usr/ucb:/sbin:/usr/sbin:/etc:/usr/local/bin:/oradata/epdmat/goldengate/config/sys"
    ORACLE_HOME: "/usr/orasys/12.1.0.2r10"
  with_items: "{{ factor_dbs.split('\n') }}"

但是我注意到不同的主机有不同的 ORACLE_HOME 和 PATHS.如何在剧本中定义这些变量，以便任务选择正确的 ORACLE_HOME 和 PATH 变量并成功执行任务

However I have noticed that the different hosts have different ORACLE_HOME and PATHS. How can I define those variables in the playbook, so that the task picks the right ORACLE_HOME and PATH variables and execute the task successfully

推荐答案

您可以为每个主机定义特定于主机的变量.您可以编写您的库存文件，如:

you can define host specific variables for each of the hosts. You can write your inventory file like:

[is_hosts]
greenhat ORACLE_HOME=/tmp
localhost ORACLE_HOME=/sbin

类似于 PATH 变量

similarly for the PATH variable

那么你的任务:

演示结果的示例剧本:

- hosts: is_hosts
  gather_facts: false
  vars:

  tasks:
    - name: task 1
      shell: "env | grep -e PATH -e ORACLE_HOME"
      environment:
        # PATH: "{{ hostvars[inventory_hostname]['PATH']}}"
        ORACLE_HOME: "{{ hostvars[inventory_hostname]['ORACLE_HOME'] }}"
      register: shell_output

    - name: print results
      debug:
        var: shell_output.stdout_lines

示例输出，您可以看到 ORACLE_HOME 变量确实发生了变化，并且按照主机的定义:

sample output, you can see ORACLE_HOME variable was indeed changed, and as defined per host:

TASK [print results] ************************************************************************************************************************************************************************************************
ok: [greenhat] => {
    "shell_output.stdout_lines": [
        "ORACLE_HOME=/tmp", 
        "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
    ]
}
ok: [localhost] => {
    "shell_output.stdout_lines": [
        "ORACLE_HOME=/sbin", 
        "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
    ]
}

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