juanitomint / kube-tools

A few scripts with utility functions for Kubernetes operations and debugging

kubetools.sh

A compilation of useful functions for working with kubernetes

Overview

In the heat of the battle we need to be fast so for keep things going here are some principles

• kiss Keep it simple! righT?
• provide visual aid preferable using fuzzy finder fzf command
• echo the command you're executing others can learn and re-use
• use https://github.com/reconquest/shdoc to build this README.md

shdoc kubetools.sh >README.md

INSTALL

Add this file to your .profile .bashrc .zshrc

...
source $PATH_TO_FILE/kubetools.sh
...

Index

• kpo()
• ke()
• kno()
• kdp()
• kd()
• kg()
• kppn()
• kppnn()
• knaws()
• knawsall()
• kds()
• kss()
• kst()
• ksta()
• kfmds()
• krun()
• krunbrowse()
• knew()
• kproxy()

kpo()

a shortcut for: get pods

Example

$ kpo -o wide

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• a list of pods

ke()

a shortcut for: get events timestamp sorted

Example

$ ke

Arguments

• ... (all): the options you want ie: -l wide

Output on stdout

• a list of events

kno()

a shortcut for: get nodes

Example

$ kno -o wide -l kafka-connect-dedicated=trues

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• a list of nodes

kdp()

a shortcut for: get deployments

Example

$ kdp -o wide

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• a list of deployments

kd()

a shortcut for: describe

Example

$ kd deployment -l app=kafka

Arguments

• ... (all): the options you want ie: deployments

Output on stdout

• a list of yaml

kg()

a shortcut for: get

Example

$ kg pods -l app=kafka

Arguments

• ... (all): the options you want ie: pods

Output on stdout

• a list of resources or a single resource

kppn()

list all the pods in a node picking one node or passing the node name as an argument

Example

$ kppn ip-172-18-4-100.ap-northeast-1.compute.internal
$ kppn

Arguments

• @arg

Output on stdout

• list of pods

kppnn()

list all the pods in a node picking one pod from the current namespace

Example

$ kppnn

Arguments

• @arg

Output on stdout

• list of pods

knaws()

get nodename given your aws ids

Example

$ knaws i-044cb8a4d984cba35

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• ip-172-18-6-113.ap-northeast-1.compute.internal - aws:///ap-northeast-1d/i-402kr4t2j546hvy23

knawsall()

get all aws ids from your nodes

Example

$ knawsall

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• ip-172-18-6-113.ap-northeast-1.compute.internal - aws:///ap-northeast-1d/i-402kr4t2j546hvy23

kds()

a shortcut for: get daemonsets

Example

$ kds -o wide

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• a list of daemonsets

kss()

a shortcut for: get statefulsets

Example

$ kss -o wide

Arguments

• ... (all): the options you want ie: -o wide

Output on stdout

• a list of statefulsets

kst()

Get a status count from the current namespace

Example

$ kst

Arguments

• ... (all): the options you want

Output on stdout

• pod status 5 Completed 5 CrashLoopBackOff 38 Running

ksta()

Get a status count from all namespaces

Example

$ ksta

Arguments

• ... (all): the options you want

Output on stdout

• pod status 5 Completed 5 CrashLoopBackOff 38 Running

kfmds()

find missing daemonsets pods

Example

$ kfmds filebeatlogz-filebeat

Arguments

• $1 (name): od the daemonset
• ... (all): the options you want

Output on stdout

• Node ip-172-27-2-72.ec2.internal is not running a pod from the daemonset filebeatlogz-filebeat

krun()

Run an epheremal pod with the image you want

Example

$  krun python:3-slim bash --env=VAR1=value1 --env=VAR2=value2 --port=8080

Arguments

• $1 (imagename):
• $2 (command):

Output on stdout

• run an ephemeral pod

krunbrowse()

Run an epheremal pod with the image you want browsing from local docker images If you have a file called .docker-images in your home directory it will use that

Example

$  krunbrowse

knew()

Run an isolated kubernetes context using kubie

Example

$  knew

kproxy()

Run an epheremal pod to proxy to internal aws host

Example

$  kproxy kproxy ads-monetization-airflow-database.cluster-crevvby4h2ik.us-east-1.rds.amazonaws.com	 5432

Arguments

• $1 (hostname):
• $2 (port):

Output on stdout

• run tcp-proxy