Casey Jones codeopensrc

http://serverfault.com/questions/334448/why-is-ssh-password-authentication-a-security-risk?rq=1

##Specify what commands/hosts the key can use
command="/usr/local/bin/your_backup_script.sh", ssh-rsa auiosfSAFfAFDFJL1234214DFAfDFa...
would allow only the command /usr/local/bin/your_backup_script.sh with that particular key.

from="yourclient,yourotherclient", ssh-rsa auiosfSAFfAFDFJL1234214DFAfDFa...
specify the allowed hosts for the key

Common Linux admin commands

User

`adduser` (useradd older, less user friendly)

`deluser $USER` (userdel older, less user friendly)

Delete home directory
- deluser --remove-home $USER http://unix.stackexchange.com/questions/289590/cant-add-user-because-group-already-exists

If group already exists

adduser --ingroup $USER $USER

Fix for kubernetes on DigitalOcean `Nameserver limits exceeded" err="Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 11.111.11.1 11.111.11.2 11.111.11.1"` (example IP addresses used)

After ignoring the error for a bit, I finally had to absolutely solve it due to being unable to deploy a prometheus chart inside my kubernetes cluster.

This isn't really a step-by-step but more an accumulation of resources used/found to finally help solve my problem

TL;DR

Modify /etc/netplan/50-cloud-init.yaml removing some entries from IFACE.nameservers.address
- netplan apply to apply changes
resolvctl to see changes to DNS Servers stanza for the IFACE modified


	PATTERN=*.git

	find . -iname '$PATTERN' \| sed -e s%./%%g \| column