卸载Elasticsearch时遭遇RPM命令执行异常问题求助

Hey there, let's break down what's going on here and fix this quickly:

The Root Cause #

You ran into two straightforward issues here:

1. When you tried rpm -i elasticsearch-6.2.3.rpm, the system correctly flagged that the package was already installed—makes sense, since your goal was to uninstall it in the first place.
2. The real hangup is your uninstall command: rpm --erase elasticsearch-6.2.3.rpm targets the local RPM file name, but rpm --erase requires the name of the already installed package (not the disk file). That's exactly why you got the "package is not installed" error.

Step-by-Step Fix #

1. Confirm the exact installed package name
   Run this command to list all Elasticsearch packages currently on your system:

   rpm -qa | grep elasticsearch
   

   From your original error message, we already know this will output something like elasticsearch-6.2.3-1.noarch—that's the actual package name you need to target.

2. Run the correct uninstall command
   Use the package name from the previous step (not the .rpm file name) with rpm --erase:

   rpm --erase elasticsearch-6.2.3-1.noarch
   

   If there's only one Elasticsearch package installed, you can simplify it to:

   rpm --erase elasticsearch
   

3. Verify the uninstallation
   Double-check that the package is gone by running the grep command again:

   rpm -qa | grep elasticsearch
   

   If you get no output, Elasticsearch has been successfully uninstalled.

Quick Extra Tip #

If you ever need to reinstall or upgrade Elasticsearch later, use rpm -Uvh elasticsearch-6.2.3.rpm instead of rpm -i—the -U flag tells RPM to upgrade the package if it's already installed, which avoids the "already installed" warning you saw earlier.

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