使用Ansible批量安装JDK
1. 准备工作
1.1 主机列表
| IP | 主机名 | 内存（GB） | CPU核数 | 磁盘 | 操作系统 | CPU架构 |
|---|---|---|---|---|---|---|
| 10.0.0.13 | arc-pro-dc01 | 16 | 1 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.14 | arc-pro-dc02 | 16 | 1 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.15 | arc-pro-dc03 | 16 | 1 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.16 | arc-pro-dc04 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.17 | arc-pro-dc05 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.18 | arc-pro-dc06 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.19 | arc-pro-dc07 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.20 | arc-pro-dc08 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
| 10.0.0.21 | arc-pro-dc09 | 8 | 2 | 500GB | CentOS 7.9.2009 | x86_64 |
1.2 已安装服务
| 版本 | arc-pro-dc01 | arc-pro-dc02 | arc-pro-dc03 | arc-pro-dc04 | arc-pro-dc05 | arc-pro-dc06 | arc-pro-dc07 | arc-pro-dc08 | arc-pro-dc09 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Ansible | 2.9.27 | ✅ |
说明：
- 每个服务器的 IP 均是静态的
- 每个服务器的防火墙都已关闭
- 每个服务器的 SELINUX 已经禁用
- 每个服务器均存在一个管理员用户 admin，该用户可以免密码执行 sudo 命令；
- 在 arc-pro-dc01 机器上，可以使用 admin 用户免密码 ssh 到其他机器；
- 服务器之间的时间同步；
- 所有操作均使用 admin 用户完成；
- 每个服务的 /etc/hosts 文件均包含如下内容：
10.0.0.13 arc-pro-dc01
10.0.0.14 arc-pro-dc02
10.0.0.15 arc-pro-dc03
10.0.0.16 arc-pro-dc04
10.0.0.17 arc-pro-dc05
10.0.0.18 arc-pro-dc06
10.0.0.19 arc-pro-dc07
10.0.0.20 arc-pro-dc08
10.0.0.21 arc-pro-dc09
为使集群满足以上要求，参考下列文章进行配置：
- 使用 VMware Workstation 安装 CentOS-7 虚拟机
- 用 Ansible 批量完成 CentOS 7 操作系统基础配置
1.3 集群规划
| 版本 | arc-pro-dc01 | arc-pro-dc02 | arc-pro-dc03 | arc-pro-dc04 | arc-pro-dc05 | arc-pro-dc06 | arc-pro-dc07 | arc-pro-dc08 | arc-pro-dc09 | |
|---|---|---|---|---|---|---|---|---|---|---|
| JDK | 8u461 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
1.4 下载安装包
JDK 8 下载页面：
- 8u211以及之后版本的下载页面：https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html
- 8u202以及更早的版本下载页面：https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html
该网站需要注册登录后才可以下载JDK。下载 jdk-8u461-linux-x64.tar.gz。
使用 admin 用户登录 arc-pro-dc01 机器，创建目录：/home/admin/ansible/jdk
将 jdk-8u461-linux-x64.tar.gz 上传至 arc-pro-dc01 机器的 /home/admin/ansible/jdk 目录下。
2. Ansible 文件
2.1 Ansible 目录结构
说明：在 arc-pro-dc01 机器上，执行 ansible 命令的基础目录为 /home/admin/ansible
$ tree /home/admin/ansible/
/home/admin/ansible/
├── ansible.cfg
├── hosts
└── jdk ├── install_jdk.yml └── jdk-8u461-linux-x64.tar.gz
2.2 ansible.cfg
[defaults]
inventory=./hosts
host_key_checking=False
2.3 hosts
[cluster]
arc-pro-dc01
arc-pro-dc02
arc-pro-dc03
arc-pro-dc04
arc-pro-dc05
arc-pro-dc06
arc-pro-dc07
arc-pro-dc08
arc-pro-dc09
2.4 install_jdk.yml
---
- name: Install JDK 8hosts: clusterbecome: truegather_facts: falsevars:admin_user: adminjdk_tarball: "jdk-8u461-linux-x64.tar.gz"jdk_install_dir: "/usr/java"jdk_dirname: "jdk1.8.0_461" # 解压后的目录名jdk_symlink: "jdk"env_file: "/etc/profile.d/arc-env-jdk.sh"tasks:- name: Ensure JDK install directory existsfile:path: "{{ jdk_install_dir }}"state: directorymode: '0755'- name: Remove jdk dir and create newshell: |rm -rf {{ jdk_install_dir }}/{{ jdk_symlink }} {{ jdk_install_dir }}/{{ jdk_dirname }}mkdir -p {{ jdk_install_dir }}/{{ jdk_dirname }}- name: Extract JDK tarballunarchive:src: "{{ jdk_tarball }}"dest: "{{ jdk_install_dir }}/{{ jdk_dirname }}"remote_src: noextra_opts:- "--strip-components=1" # 去掉压缩包最顶层目录，直接解压到目标- name: Create jdk symlinkfile:src: "{{ jdk_dirname }}"dest: "{{ jdk_install_dir }}/{{ jdk_symlink }}"state: link- name: Ensure environment file existsfile:path: "{{ env_file }}"state: touch # 文件存在则不改内容，不存在则创建空文件owner: "{{ admin_user }}"group: "{{ admin_user }}"mode: '0755'- name: Set JAVA_HOME and update PATHcopy:dest: "{{ env_file }}"content: |export JAVA_HOME={{ jdk_install_dir }}/{{ jdk_symlink }}export PATH=$JAVA_HOME/bin:$PATH- name: Print java versionshell: |source {{ env_file }}java -versionargs:executable: /bin/bashregister: java_versionignore_errors: yes- name: Show java version outputdebug:msg: "{{ java_version.stderr_lines }}"
3. 安装
在 arc-pro-dc01（Ansible 管理节点） 服务器执行
$ pwd
/home/admin/ansible$ ansible-playbook jdk/install_jdk.yml# 输出
TASK [Show java version output] *********************************************
ok: [arc-pro-dc01] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc05] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc02] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc03] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc04] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc06] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc08] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc07] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}
ok: [arc-pro-dc09] => {"msg": ["java version \"1.8.0_461\"","Java(TM) SE Runtime Environment (build 1.8.0_461-b11)","Java HotSpot(TM) 64-Bit Server VM (build 25.461-b11, mixed mode)"]
}PLAY RECAP *******************************************************************************************************
arc-pro-dc01 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc02 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc03 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc04 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc05 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc06 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc07 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc08 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
arc-pro-dc09 : ok=8 changed=5 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0