karimkawambwa

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

karimkawambwa

Backup:
docker exec -t -u postgres your-db-container pg_dumpall -c > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql

Restore:
cat your_dump.sql | docker exec -i your-db-container psql -Upostgres

karimkawambwa

Getting an Alpine shell

Often usefull for in-cluster debugging.

$ kubectl run --generator=run-pod/v1 --image=alpine:3.5 -it alpine-shell -- /bin/sh

detach (without killing the container):

karimkawambwa

karimkawambwa

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

karimkawambwa

#!/bin/bash

# Add to your .bashrc on Mac OSX, then run camfix in Terminal
# if the Mac's built-in camera stops working.
# Thanks to: http://osxdaily.com/2013/12/27/fix-there-is-no-connected-camera-error-mac/
alias camfix='sudo killall VDCAssistant; sudo killall AppleCameraAssistant'