Kubectl Plugins Basic Structure of a kubectl Plugin kubectl plugins are simply executables that start with the kubectl- prefix. When you execute a command like: kubectl my-plugin kubectl searches for an executable called kubectl-my-plugin in the directories listed in the PATH environment variable and executes it.

K9scli Shortcuts 1 2 3 4 5 6 7 Ctrl-d: delete. Ctrl-k: kill (no confirmation). Ctrl-w: toggle wide columns. (Equivalent to kubectl … -o wide) Ctrl-z: toggle error state Ctrl-e: hide header. Ctrl-s: save output (e.g. the YAML) to disk. Ctrl-l: rollback. Sort by Column If you want to sort any view (Pod/Services) based on some exact column - you can just press Shift + Column Initial e.g. If you want to sort items by column Age - Just press Shift + A...

Pod disruption budget PDBs define the minimum number of replicas that must remain running during disruptions. This prevents critical workloads from being evicted but can hinder node scaling. A PodDisruptionBudget (PDB) is a Kubernetes object that specifies the number of pods that can be unavailable in deployment, maintenance, or at any given time. This helps to ensure that your applications remain available even if some of their pods are terminated or evicted....

kustomize lets you customize raw, template-free YAML files for multiple purposes, leaving the original YAML untouched and usable as is.

Git terror moments

Installing talos on a Turing Piv2 board with cm4 modules.

Overview Percona Distribution for PostgreSQL includes a set of extensions that have been tested to work together. These extensions enable you to efficiently solve essential practical tasks to operate and manage PostgreSQL. Reference The pg_stat_statements and pg_stat_monitor extensions are used to collect and monitor query statistics in PostgreSQL, but they have key differences in functionality, focus, and efficiency. pg_stat_statements: This is an official extension included with PostgreSQL. Its main purpose is to track the performance of queries executed in the database....

Parameters shared_buffers: The shared_buffers parameter defines how much RAM is reserved for PostgreSQL operations. Increasing it can improve performance, especially if you increase the number of connections. PostgreSQL recommends setting shared_buffers to between 25% and 40% of the total RAM. With 128 GB of RAM, you can configure it to a value close to 32 GB or 40 GB, depending on system requirements and workload. 1 ALTER SYSTEM SET shared_buffers = '32GB'; work_mem: Defines the memory allocated for temporary operations (such as sorting and joins) per session....

Backup db pg_dump -h -p -U postgres -d db_name -F c -b -v -f file.sql -d db_name -F c: more efficient -b: binary data incluyed (blobs or binary objects) -v: more detailed -f: file_name Backup roles 1 pg_dumpall -h <origin ip> -p <origin port> -U postgres --roles-only -f roles.sql Restore drop db before recovery 1 2 postgres=# DROP DATABASE db_name; DROP DATABASE create db 1 createdb -h <destination ip> -p <destination port> -U postgres db_name restore pg_restore -h -p -U postgres -d db_name -v file....

init postgresql db from scratch 1 2 3 4 5 systemctl stop postgresql rm -rf /var/lib/postgresql/15/main/* export PATH=$PATH:/usr/lib/postgresql/15/bin pg_ctl -D /var/lib/postgresql/15/main/ initdb init db manually 1 sudo -u postgres /usr/lib/postgresql/17/bin/postgres -D /var/lib/postgresql/17/main