Category Archives: Uncategorized

By February 17, 2019

This week I decided to do some Docker Swarm and Kubernetes labs. The Docker Swarm lab went very well and I was able to get a application up and running under 15 minutes. The Kubernetes ‘installation’ not up and running. The installation took me 3 hours due to multiple errors with the server environment. Below

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By January 26, 2019

Cassandra is great for storing unknown type and amounts of data. One of the key benefits I like it. When you update a row and the primary matches. It will only update that row instead of adding a new row. With Mysql you had to set the unique option on the column. Git repo

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By December 27, 2018

Error H.264 (High Profile) decoder is required to play the file, but is not installed. H.264 or MPEG-4 Part 10, Advanced Video Coding (MPEG-4 AVC) is a block-oriented motion-compensation-based video compression standard. As of 2014, it is one of the most commonly used formats for the recording, compression, and distribution of video contentH Solution on Fedora

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By December 21, 2018

Panic: file mail-index-sync-keywords.c: line 227 (keywords_update_records): assertion failed: (data_offset >= sizeof(struct mail_index_record)) Solution The error can be fixed by removing the user file under spool directory. In our case the path was /var/spool/mail Then rm -rf <user>

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By April 22, 2018

Summary of steps 1> Update the zone file with the new IP 2> Reload the master zone 3> Force transfer to the slave 4> For good measure , restart the bind service on both the master and slave. Also verify the status of the process on both. “systemctl status named” A. Put a list of

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