Category Archives: Open Source

Open Source-related

Announcement: check_s3_encryption.sh Linux Utility Available

Announcing a new SRE utility I wrote called check_s3_encryption.sh to report and optionally encrypt any AWS S3 unencrypted buckets: it can be run from the command line or a crontab it’s useful for IT compliance MIT License. See the README … Continue reading

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oom-report linux Utility

Announcing a new SRE utility I wrote for processing linux syslog Out of Memory (OOM) entries, oom-report. It parses logfiles for OOMs and reports on how much RAM (vm + rss) each process used and sorts from smallest to largest. … Continue reading

Posted in Java, Linux, Open Source, Tech | Leave a comment

Cassandra vnodes Streaming Reliability Calculator

The Cassandra database has a setting in cassandra.yaml, num_tokens, for the number of vnodes. num_tokens is the number of partitions to use per host, and thus the number of parallel streams to use for data updates. The default was 256 … Continue reading

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Gitlab for Users Transitioning from Github

After using Github for several years, I recently used Gitlab for a solo developer project. Some of the differences I noticed over the past two weeks were: 1. After initial signup, I got a 422 error HTTP response for about … Continue reading

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PostgreSQL and “PANIC: replication checkpoint has wrong magic” error

PSA: I haven’t seen a solution to this issue online, so posting it here for search engines to index. PostgreSQL is an ACID-compliant database, but filesystem corruption can still prevent it from starting. In my case, a linux test instance … Continue reading

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