thomaschaplin

Git Commit Search Cheat Sheet

Quick reference for finding commits in Git with examples.

---

1. Search by exact string (-S)

git log -p -S "" -- 

thomaschaplin

PagerDuty Incident Exporter

A simple Bash script to export all incidents from PagerDuty month by month basis.

It:

• Queries the PagerDuty Incidents API v2
• Handles pagination (for large result sets)
• Outputs one JSON file per month like pagerduty-incident-export-12-2021.json, pagerduty-incident-export-01-2022.json, etc.
• Compatible with macOS (uses BSD date syntax)

thomaschaplin

Unused CRD Detector for Kubernetes

This script lists all Custom Resource Definitions (CRDs) in a Kubernetes cluster and checks how many instances exist for each CRD. It only prints CRDs that have at least one instance.

Prerequisites

• kubectl
• jq

Usage

thomaschaplin

How to view all Jenkins Secrets/Credentials

I recently worked on a Project that required migrating Jenkins credentials to another credentials store, going to each credential and viewing and subsequently decrypting the credential turned into a real chore and I needed a way to do this all in one go.

Luckily we can access credentialsStore using Jenkins script console, so:

In Jenkins, go to: /script page. Run the following command:

thomaschaplin

def sout = new StringBuilder(), serr = new StringBuilder()
def proc = "ls /var/jenkins_home/jobs".execute()
proc.consumeProcessOutput(sout, serr)
proc.waitForOrKill(30000)
println "out> $sout\nerr> $serr"

thomaschaplin

def sout = new StringBuilder(), serr = new StringBuilder()
def proc = "git config --list".execute()
proc.consumeProcessOutput(sout, serr)
proc.waitForOrKill(30000)
println "out> $sout\nerr> $serr"

thomaschaplin

How to delete a index.lock file via the Script Console

Steps

Step 1

In the console output of the failing job you will see an error similar to - stderr: fatal: Unable to create '/var/jenkins_home/jobs/job-name-example/workspace@script/.git/index.lock': File exists.

Step 2

thomaschaplin

How to kill a Jenkins job via the Script Console

Steps

Step 1

Find the name of the job, this is usually in the URL - https://jenkins.domain.io/job/job-name-example/123 In this example URL the job name would be - job-name-example

Step 2

thomaschaplin

def numberOfHoursBack = 7 * 24

def totalBuildTime =
  Jenkins.instance.getItems(Job.class).collect {
    job ->
      job.getBuilds().byTimestamp(System.currentTimeMillis() - numberOfHoursBack * 60 * 60 * 1000, System.currentTimeMillis())
  }
  .flatten()
  .collect {
    build -> build.getDuration()

thomaschaplin

type itemMap<T> = {
    [itemName: string]: T
}

type Environments = {
    [x: string]: Environment
}

export enum Environment {
    /* eslint-disable no-unused-vars */