mmastoras

setup local branch tracking a remote feature branch
====================================================
git checkout -b <feature branch name> origin/<feature_branch_name>

create new feature branch
=========================
git checkout master
git checkout -b <feature branch name>

create a new local branch tracking a remote branch

mmastoras

// get journal logs from systemd services
# journalctl -u <service name>.service
# journalctl -u <service name>.service -n 100 --no-pager

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

# 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

$ 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

apt-get update
apt-get install -y psmisc

i="0"

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

mmastoras

knife supermarket search openssh
knife supermarket download openssh
tar -xzvf openssh-2.10.3.tar.gz
knife supermarket download iptables
tar -xzvf iptables-8.0.0.tar.gz
knife cookbook upload iptables
knife cookbook upload openssh

mmastoras

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

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

$ influx -ssl -host <host> -port <port>

# select database
> use <database name>

# set time format
> precision rfc3339

# show all measurements
> show measurements