Snippets

Snippets or little things I cannot seem to remember but continue to need to get things done.

Import Powershell Module from a Specific Location

pwsh
cd my-module
import-module -name ./Module/

Curl with SNI Support and Client/mTLS

curl -k https://myhost.mydomain.com --cert public.pem --key private.pem --header "Host: myhost.mydomain.com" --resolve myhost.mydomain.com:443:20.231.112.51

Fix the Weird Terraform v0.12 Issue Where it Won’t Load AWS Creds

This annoys the shit out of me and I always forget this command. :)

export AWS_SDK_LOAD_CONFIG=1

Use grep, awk, and xargs to Do Some Sketchy Stuff in a Cluster or with Terraform

Disclaimers: YMMV/IANAL/Don’t try this at home I’m a professional :)

kubectl get po | grep Terminating | awk '{print $1}' | xargs kubectl delete po --force --grace-period=0

kubectl get po --all-namespaces | grep Terminating | awk '{print $2 " " $1}' | xargs printf 'kubectl delete po %s -n %s --force --grace-period=0\n'

kubectl get crd | grep kyverno | awk '{print $1}' | xargs kubectl delete crd

terraform state list | grep fastly | awk '{print "\x27"$1"\x27"}' | xargs terraform state rm #single quotes around the string

Clear the Console + Scrollback in the VS Code Console

I need to use the VSCode Console more instead of switching back/forth between the IDE and iTerm.

CMD + K or CTRL + K

Add an Origin for Github

git remote add origin https://github.com/rayterrill/t.git
git branch -M main
git push -u origin main

Get Running AWS Instances with Filtering

aws ec2 describe-instances --filters "Name=tag:kubernetes.io/cluster/my-cluster,Values=owned" "Name=instance-state-name,Values=running" --region us-east-1 | jq '.Reservations | length'

Setting Up GPG with a Yubikey

1. Insert the compatible yubikey into the computer
2. Reset the pins if desired (recommended)
   1. gpg --card-edit
   2. Enter admin mode: admin
   3. Change the passwords: passwd
3. Change the key size to 4096 (prob defaults to 2048)
   1. gpg --card-edit
   2. Enter admin mode: admin
   3. Change key attributes: key-attr
   4. Choose RSA
   5. Set the keysize to 4096
4. Generate GPG key
   1. gpg --card-edit
   2. Enter admin mode: admin
   3. Generate key: generate
   4. Follow the prompts, and make sure your full name and email match what you have set in Github
5. Export the key to put into github
   1. Get the key id from the output from command 4, and use it here: gpg --armor --export KEY_ID_FROM_STEP_4
   2. Put the outputted PGP Public Key Block in Github
6. Configure Git to always sign:

    [credential]
        helper = osxkeychain
    [user]
        email = YOUR_EMAIL_ADDRESS_WHICH_MATCHES_GITHUB
        name = YOUR_FULLNAME_WHICH_MATCHES_GITHUB
        signingkey = KEY_ID_FROM_STEP_4
    [commit]
        gpgsign = true
   

Setting GPG with a Yubikey up on a New Computer

1. Make sure gpg and pinentry-mac are installed
2. export your public key

   gpg --output username.gpg --export YOUR_EMAIL_ADDRESS
   

3. copy the key over to the new computer
4. import the key on your computer

   gpg --import username.gpg
   

5. Configure pinentry and gpg (.gnupg/gpg-agent.conf - make sure you point to the correct path for pinentry on your machine):

   pinentry-program /opt/homebrew/bin/pinentry-mac
   

6. Restart gpg-agent:

   gpgconf --kill gpg-agent