This is a networking problem. The traefik container cannot reach the destination container. This is most likely the problem of the default or specific network defined for traefik and the destination container. Assume this compose file: So you’d think your traefik default network configuration would look like this: But you have to remember that Docker… Continue Reading traefik gateway timeout
debugging jenkinsfiles
As a DevOps I spend a lot of time in Jenkins, automating stuff. Often pipelines will misbehave and I need ways of debugging things: Println Obviously the easiest way of getting information out of the running pipeline. Simulating a “breakpoint” Adding a somewhere in the pipeline pauses execution at that point which lets me check… Continue Reading debugging jenkinsfiles
check how much swap is used per process
This is simply a re-post of How to find out which processes are using swap space in Linux? which in return is based on northernmost.org’s Swap Usage – 5 Years Later Use like this:
find (and delete) files recursively on linux using find
Just as a reminder to myself, I will repost this post on baeldung: Recursively Deleting Files With a Specific Extension Get an idea of what you’ll be deleting: Reminder: Do backups and check that you’re in the correct location before starting the execution.
docker swarm: find all services using a certain secret
If you find yourself in a situation like us, wanting to know how many and which services in a docker swarm are using a specific secret, this might help you:
vs code tweaks
Currently my main editor is Visual Studio Code, which Microsoft has done a marvellous job on. Despite installing various extensions for the various things I’m working with, I will collect some tweaks here that I usually do, so I can remember them later: Navigate between tabs with Cmd+<number> Add the Cmd+<number> keybinding to your keybindings.json… Continue Reading vs code tweaks
osx docker, kubernetes, helm setup
Install Docker-Desktop: https://www.docker.com/products/docker-desktop Enable Kubernetes Cluster bundled with Docker: https://docs.docker.com/docker-for-mac/#kubernetes Install helm: https://helm.sh/docs/intro/quickstart/ Add kubectl and helm commandline completion to .zshrc: source <(kubectl completion zsh)source <(helm completion zsh)
debugging in vscode
I am currently debugging a 10+ year old PHP project, trying to migrate it to PHP 7.2 While debugging VSCode would start giving me “error evaluating code” and jump out of the debug session after the first step. When I stopped the debugger and reloaded the page, the page would load fine. So it didn’t… Continue Reading debugging in vscode
ssh jump hosts
Just a repost of SSH jump host. To remember in the future.
docker container stuck in ‘new’ state forever
I’ve had this issue a couple of times and I formulated a devops-stackexchange question eventually. Although I do not yet really have a way to debug the NEW state, there is some information there: Docker container stuck in “new” state – Docker swarm – service stack