luckylittle

Setup a secure (SSH) tunnel as a systemd service

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

luckylittle

#!/bin/bash

# Ref: https://docs.openshift.com/container-platform/4.6/backup_and_restore/backing-up-etcd.html

etcd_node=`oc get pods -n openshift-etcd -l app=etcd -o=jsonpath='{.items[0].spec.nodeName}'`
ssh -i ~/.ssh/dmz-ocp4-rsa core@$etcd_node

id=$(sudo crictl ps --name etcdctl | awk 'FNR==2{ print $1}') && sudo crictl exec -it $id /bin/bash
etcdctl member list -w table
etcdctl endpoint health --cluster

luckylittle

#!/bin/bash
# Generate a Markdown change log of pull requests from commits between two tags
# Author: Russell Heimlich
# Original URL: https://gist.github.com/kingkool68/09a201a35c83e43af08fcbacee5c315a
# Modified for Atlassian Stash and older Git version by author: Lucian Maly <lucian@redhat.com>
# URL: https://gist.github.com/luckylittle/7e7192743514d08989a6fc0cdbd93e61

# HOW TO USE
# Copy this script to a directory under Git version control
# Make the script executable i.e. chmod +x changelog.sh

luckylittle

#!/usr/bin/env python

## Converting a CloudFormation Template from JSON to YAML
## Script copyright: http://blog.flux7.com/how-to-convert-a-cloudformation-template-from-json-to-yaml
##
## Example:
## $ python converter.py --json my-stack.template --yaml my-stack.yaml

import yaml
import json

luckylittle

#!/usr/bin/env python
import sys, yaml, json

def funcparse(loader, node):
  node.value = {
    yaml.constructor.ScalarNode:   loader.construct_scalar,
    yaml.constructor.SequenceNode: loader.construct_sequence,
    yaml.constructor.MappingNode:  loader.construct_mapping,
  }[type(node)](node)
  node.tag = node.tag.replace(u'!Ref', 'Ref').replace(u'!', u'Fn::')