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本文介绍快速安装Ansible的方法，目前安装的版本是2.7.5，Ubuntu系统版本是18.04，其它Linux版本的安装方法请参考在RHEL 8/CentOS 8系统上安装和配置Ansible。
总结起来就下面几条命令 注：安装Ansible 2.7.5只需要在Ubuntu 18.04系统终端中输入以下五个命令： sudo apt install software-properties-common sudo apt-add-repository ppa:ansible/ansible sudo apt update sudo apt install ansible ansible --version
第一步、增加软件源 ###如果你没有安装的话，请运行以下命令： axing@Docker_LD8:~$ sudo apt install software-properties-common Reading package lists... Done Building dependency tree Reading state information... Done software-properties-common is already the newest version (0.96.20.7). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. ###增加Ansible软件源： axing@Docker_LD8:~$ sudo apt-add-repository ppa:ansible/ansible Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy. Avoid writing scripts or custom code to deploy and update your applications— automate in a language that approaches plain English, using SSH, with no agents to install on remote systems. [http://ansible.com/](http://ansible.com/) More info: [https://launchpad.net/~ansible/+archive/ubuntu/ansible](https://launchpad.net/~ansible/+archive/ubuntu/ansible) Press [ENTER] to continue or ctrl-c to cancel adding it ###按回车继续安装： gpg: keyring `/tmp/tmpzzsbegma/secring.gpg' created gpg: keyring `/tmp/tmpzzsbegma/pubring.gpg' created gpg: requesting key 7BB9C367 from hkp server [keyserver.ubuntu.com](http://keyserver.ubuntu.com/) gpg: /tmp/tmpzzsbegma/trustdb.gpg: trustdb created gpg: key 7BB9C367: public key "Launchpad PPA for Ansible, Inc." imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) OK
第二步、更新软件，然后安装Ansible axing@Docker_LD8:~$ sudo apt update Get:1 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) xenial-security InRelease [107 kB] Hit:2 [http://gb.archive.ubuntu.com/ubuntu](http://gb.archive.ubuntu.com/ubuntu) xenial InRelease Hit:3 [http://ppa.launchpad.net/ansible/ansible/ubuntu](http://ppa.launchpad.net/ansible/ansible/ubuntu) xenial InRelease Get:4 [http://gb.archive.ubuntu.com/ubuntu](http://gb.archive.ubuntu.com/ubuntu) xenial-updates InRelease [109 kB] Get:5 [http://gb.archive.ubuntu.com/ubuntu](http://gb.archive.ubuntu.com/ubuntu) xenial-backports InRelease [107 kB] Get:6 [https://download.docker.com/linux/ubuntu](https://download.docker.com/linux/ubuntu) xenial InRelease [66.2 kB] Hit:7 [https://packages.microsoft.com/repos/vscode](https://packages.microsoft.com/repos/vscode) stable InRelease Get:8 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) xenial-security/multiverse amd64 Packages [3,724 B] Get:9 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) xenial-security/multiverse i386 Packages [3,888 B] Err:6 [https://download.docker.com/linux/ubuntu](https://download.docker.com/linux/ubuntu) xenial InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8 Reading package lists... Done W: GPG error: [https://download.docker.com/linux/ubuntu](https://download.docker.com/linux/ubuntu) xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8 E: The repository '[https://download.docker.com/linux/ubuntu](https://download.docker.com/linux/ubuntu) xenial InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. ###安装Ansible，我装好了，为了拷屏又装了一次，提示已经是最新版了。 axing@Docker_LD8:~$ sudo apt install ansible Reading package lists... Done Building dependency tree Reading state information... Done ansible is already the newest version (2.7.5-1ppa~xenial). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
第三步、查看Ansible版本 axing@Docker_LD8:~$ ansible --version ansible 2.7.5 config file = /etc/ansible/ansible.cfg configured module search path = [u'/home/axing/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules'] ansible python module location = /usr/lib/python2.7/dist-packages/ansible executable location = /usr/bin/ansible python version = 2.7.12 (default, Nov 12 2018, 14:36:49) [GCC 5.4.0 20160609] 根据上面信息得出的结论：在Ubuntu 18.04系统中安装Ansible 2.7.5成功。
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