Category Archives: Misc

Setup Camel-K in VMware Tansu (Kubernetes) with a Harbor registry

Here is how I set up a Camel-K installation in VMware Tansu with a Harbor registry.

  1. Log into Harbor
  2. Got to your project
  3. Create a Robot Account with both push and pull permissions (you might need Admin permissions in the project for this)
  4. Copy the JWT at the end of the creation process
  5. Log into VMware Tansu CLI
  6. Create a secret with that JWT token
    kubectl create secret docker-registry camel-k-stage --docker-server=<Harbor adress> --docker-username="robot\$camel-k-stage" --docker-password='<JWT token>'
  7. Install Camel-K Operator
    kamel install --registry <Harbor adress> --organization <Harbor project name> --registry-secret camel-k-stage
  8. Your Camel-K operator is now ready for use

Tested on Harbor v2.0 and VMware Tansu Kubernetes v1.22

My Docker Cheat Sheet

Run a new container

docker run <container id or name>

Start a stopped container

docker start <container id or name>

Stop a container

docker stop <container id or name>

Kill a container

docker kill <container id or name>

Restart a container

docker restart <container id or name>

List all running containers

docker ps

List all containers

docker ps -a

List with formatted output (here only show name and status of containers)

docker ps --format '{{.Names}} {{.Status}}'

Inspect a container

docker inspect <container id or name>

List all ports a container uses

docker container port <container id or name>

Open Bash in container (‘exit’ to close)

docker exec -it <container id or name> bash

Watch STDOUT from container (‘-f’ for continued logging)

docker logs <container id or name>

Search containers in registry (example: “MySQL” gives all available MYSQL-containers)

docker search <search word>

Pull container from registry

docker pull <name>

Git: Rename “master” to “main”

More and more places are starting to rename their “master” branch to “main”. Here is a short description on one way to do that

1. We start with pulling/commiting all our work so that our Git tree is clean

$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean

2. Now we rename our local branch

niklas@HOME MINGW64 /c/git/my-project (master)
$ git branch -m master main

niklas@HOME MINGW64 /c/git/my-project (main)

3. Now we create the “main” branch on our remote

$ git push -u origin main
Total 0 (delta 0), reused 0 (delta 0), pack-reused 0
remote: To create a merge request for main, visit:
 * [new branch]      main -> main
branch 'main' set up to track 'origin/main'.

4. and lastly we remove the “master” branch to prevent any misstakes commiting to it in the future

$ git push origin --delete master
 - [deleted]         master

NOTE! If you have pipeline scripts that depended on “master” before you need to update them to use “main” now
NOTE 2! If your project used “master” as “Default branch” you need to change that to “main” now

Tested on Windows 10 and GitBash v3.5.2