如何在CentOS 7（EC2实例）中完全卸载Puppet服务端及客户端？

Got it, let’s walk through completely wiping Puppet from your CentOS 7 system (including EC2 instances) — partial uninstalls are super common when folks miss hidden configs or leftover services, so we’ll cover every loose end here.

卸载Puppet客户端（Agent） #

Start with stopping and disabling the agent service to avoid it running mid-uninstall:

• Stop the puppet agent: systemctl stop puppet
• Disable it from starting on boot: systemctl disable puppet
• Remove the agent packages (cover all common package names): yum remove -y puppet puppet-agent puppet-release

Next, delete all leftover config, data, and log directories — these are often what cause "residual" Puppet issues:

• rm -rf /etc/puppet/ /var/lib/puppet/ /var/log/puppet/
• If you installed via Puppet Labs official repo, clean up their dedicated directory: rm -rf /opt/puppetlabs/

卸载Puppet服务端（Master/Server） #

For servers, we need to handle the puppetservice specifically:

• Stop the puppetserver service: systemctl stop puppetserver
• Disable auto-start: systemctl disable puppetserver
• Remove server-related packages: yum remove -y puppetserver puppet-server puppet puppet-release

Now wipe server-specific data (including SSL certificates, which are a big one for leftover traces):

• rm -rf /etc/puppetlabs/ /var/lib/puppetlabs/ /var/log/puppetlabs/
• Clear old SSL certs (if you had a CA setup): rm -rf /var/lib/puppet/ssl/

通用残留清理（适用于客户端和服务端） #

Even after removing packages, there might be loose ends to tie up:

1. Clean up YUM repos: If you added Puppet’s official repo, delete the repo file: rm -rf /etc/yum.repos.d/puppet*.repo
2. Clear YUM cache: yum clean all
3. Check for stray processes: Run ps aux | grep puppet — if any processes show up, kill them with kill -9 <pid> (replace <pid> with the process ID from the output)
4. EC2-specific check: If you used cloud-init or user data to install Puppet on your EC2 instance, double-check these files to make sure Puppet isn’t set to reinstall on reboot:
   • /var/lib/cloud/instance/user-data.txt
   • /etc/cloud/cloud.cfg
     Remove any lines that reference Puppet installation if present.

验证卸载完成 #

To make sure everything’s gone, run these checks:

• rpm -qa | grep puppet — should return no results
• systemctl list-unit-files | grep puppet — should show no enabled/disabled Puppet services
• Check that all the directories we deleted earlier don’t exist anymore

If you tried uninstalling before and it didn’t stick, this full cleanup should fix it — most partial uninstalls miss the SSL certs or /opt/puppetlabs/ directory.

内容的提问来源于stack exchange，提问作者envalentine