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Andrew Fletcher
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Recently, after upgrading to Ubuntu 24.04, we encountered a significant challenge with our Apache Solr service—it refused to restart. This post documents the steps I took to diagnose and resolve the issues, providing a clear guide for anyone facing similar troubles.
Initial troubleshooting
The journey began with a simple command to check the status of our Solr service:
sudo service solr statusThe response indicated that the service had failed:
× solr.service - LSB: Controls Apache Solr as...
Andrew Fletcher
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When Solr is displaying results on the site, first step is to log in the server...
Andrew Fletcher
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On a server directory with over 100,000 PDF files, I needed to verify the...
Andrew Fletcher
•
Recently, I encountered an issue where my local Docker environment refused to...
Andrew Fletcher
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Managing files on a server often includes tasks like clearing logs or resetting...
Andrew Fletcher
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To review the content of files being generated in the /tmp directory on an Ubuntu server before Microsoft Defender removes them, you can use several approaches. Following is the approach we took.
Real-Time Monitoring
You can set up a script to monitor the /tmp directory and log the contents of new files. Use inotifywait to watch for new files and then copy them to another directory for review.
Install inotify-tools:
sudo apt-get install inotify-toolsCreate a monitoring...
Andrew Fletcher
•
A growing list of commands I've used and what they do in no specific order
sudo...
Andrew Fletcher
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To resolve the CVE-2022-48624 vulnerability on Ubuntu using Nginx, it's crucial...
Andrew Fletcher
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In many terminal text editors, you use find command as reference in Terminal...
Andrew Fletcher
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Having updated Solr, re-indexing wasn't working. The error in the logs...
Andrew Fletcher
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On an Ubuntu 20.02 system with Nginx, you can utilize the following commands to handle Solr:
To verify the status of the Solr service
sudo systemctl status solrTo restart the Solr service
sudo systemctl restart solrStart Solr
sudo systemctl start solrStop Solr
sudo systemctl stop solrEnable Solr (Start on Boot)
sudo systemctl enable solrDisable Solr (Do Not Start on Boot)
sudo systemctl disable solrCheck Solr Version
solr versionCheck Solr Health
curl...
Andrew Fletcher
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Cleaning out or clearing data in Solr can be done in a few different ways,...
Andrew Fletcher
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In an environment that is running
Ubuntu 20.02
Nginx
Solr
The default...
Andrew Fletcher
•
You can perform the following steps:
Check Apache Modules
Apache Struts 2 is...
Andrew Fletcher
•
Docker containers list
To view a list of Docker containers that are currently...