sysadmin

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Archive of posts from May 2023

• Filesystem benchmarking

  benchmarking hardware and software raid. ext4 xfs and zfs filesystems.

• bash zfs snapshot manager

  bash tooling to send like set of zfs filesystems to backup server. made for kvm lxc container volumes.

• Hadoop HDFS/YARN HA cluster

  building and deploying hadoop

• Durable event streams with Kafka clustering

  building and deploying a kafka high availability cluster

• Redis HA clustering

  building and deploying a redis high availability cluster using sentinel, prometheus redis exporter and grafana dashboard

• Creating server certificates with your own custom root Certificate Authority

  generating a self signed server certificate for https security is easy enough but having your own certificate authority (ca) to sign with means you to only have to import one certificate to your devices for trust. this is the process i followed to generate my own root ca certificate and...

• bpftrace first look with CentOS 8

  installation of bpftrace tool to instrument kernel probes

• SysAdmins shell one liners

  useful system administrator one liners for investigation of events

• Adding swap files in times of need

  adding swap files to linux host during memory pressure events

• Jekyll starter cheat sheets

  information on jekyll and static site generators.