mmastoras

# get status of a job
$ nomad job status -no-color kafka-broker
ID            = kafka-broker
Name          = kafka-broker
Submit Date   = 2019-07-24T14:03:41-07:00
Type          = service
Priority      = 50
Datacenters   = alpha
Status        = dead
Periodic      = false

mmastoras

#!/bin/bash

apt-get update
apt-get install -y psmisc

i="0"

while [ $i -lt 10 ]
do
    if [ $(fuser /var/lib/dpkg/lock) ]; then

mmastoras

Here’s a bash function to make it easier to shell into kubernetes pods. Running `kubash` by itself will give you a list of pod names; 

$ kubash <pod name # will open a bash shell on a pod with that name. It works via prefix matching so any of the following would work:
$ kubash railsapp-68b45f5c7b-98qqz #attach to this specific pod
$ kubash railsapp                  #attach to any railsapp-* pod
$ kubash ra                        #attach to some pod that starts with "ra"

/bin/kubash
kubash() {
  if [ "$1" = "" ]; then

mmastoras

apt-get update -o Acquire::Check-Valid-Until=false

mmastoras

# Encrypt a key for use in aws secrets manager terraform state files

1. Encrypt a secret using the aws cli
$ echo "<secret>" | tr -d '\n' > secret.txt # strip the newline from the echo
$ aws kms encrypt --key-id alias/aws/secretsmanager --plaintext fileb://secret.txt --encryption-context "type=password,env=staging" --output text --query CiphertextBlob | pbcopy

2. Create the aws_kms_secrets data resource in terraform
data "aws_kms_secrets" "mercury" {
  secret {
    name    = "staging_db_password"

mmastoras

$ nc -vz -u 10.100.0.10 53
Connection to 10.100.0.10 53 port [udp/domain] succeeded!
# nc -vz 10.100.0.10 443
Connection to 10.100.0.10 443 port [tcp/*] succeeded!

mmastoras

#!/bin/bash

echo "waiting for elasticsearch"
for i in {1..60}; do
  nc_output=$(nc -zv localhost 9200 2>&1 >/dev/null)
  [[ $nc_output == *"open"* ]] && break
  sleep 1
  echo -n "."
done

mmastoras

# get logs from a pod
$ kubectl logs -f <pod name> --namespace <namespace>

# get logs from a specific container in a pod
$ kubectl logs -f <pod name> -c <container> -n <namespace>

# get logs across several containers
$ kubectl logs -l istio=ingressgateway -n istio-system -c ingress-sds # by using label

# get list of pods and observe their logs

mmastoras

# run bash in a specific container image
docker run -it <image> /bin/bash

# run bash and mount a local volume into a specific contaimer image
docker run -it -v $(pwd):/pki-tools/pki dprails/pki-tools /bin/bash

# run a x86 docker image on M1 mac
docker run -it --platform linux/amd64 -v $(pwd):/pki-tools/pki dprails/pki-tools /bin/bash

# build on m1 mac

mmastoras

sudo apt-get remove --purge mysql-server mysql-client mysql-common
sudo apt-get autoremove
sudo apt-get autoclean
dpkg -l | grep mysql
sudo apt-get install mysql-client-core-5.6
sudo apt-get update
sudo add-apt-repository -y ppa:ondrej/mysql-5.6
sudo apt-get update
sudo apt-get install mysql-client-core-5.6
dpkg -l | grep mysql