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Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

	Remove Nodes in NotReady State
	kubectl delete node $(kubectl get nodes \| grep NotReady \| awk '{print $1;}')

	# kubectl cordon <node-name>
	# kubectl drain <node-name> --force --ignore-daemonsets --delete-emptydir-data
	# kubectl delete node <node-name>

	Heap Dump from a K8s Pod

	on pod:
	jmap -dump:format=b,file=dump.hprof 1

	from your machine:
	kubectl exec -n application <pod-name> -- cat /dump.hprof > local_dump.hprof