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Understanding Liveness, Readiness and Startup Probes in Kubernetes

 This is a small article about understanding the liveness, readiness and startup in kubernetes.  There's good explanation in the kubernetes documentation: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/ This video also explains well the process: https://www.youtube.com/watch?v=aTlQBofihJQ But I wanted to understand it in a practical way. So I have this demo: https://github.com/DiegoTc/guest-book-js-docker/tree/Running-App-Version-1 It's a simple application running on a kubernetes cluster. https://github.com/DiegoTc/guest-book-js-docker/blob/Running-App-Version-1/argo/deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: name: chat-ui spec: replicas: 1 revisionHistoryLimit: 3 selector: matchLabels: app: chat-ui template: metadata: labels: app: chat-ui spec: containers: - image: diegotc/guestbook:20230803-064434 imagePullPolicy: Alwa...
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Installing Zsh in Ubuntu

So I decided to give it a try to Zsh
I really like the way it shows me the information at CLI and really useful when using git.



I didn't have to many issues for installing it.

Just the following commands and it works.


sudo apt-get install zsh
sudo apt-get install git-core





In case you encounter any issue this article can help you.



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Understanding Liveness, Readiness and Startup Probes in Kubernetes




























 This is a small article about understanding the liveness, readiness and startup in kubernetes.  There's good explanation in the kubernetes documentation: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/ This video also explains well the process: https://www.youtube.com/watch?v=aTlQBofihJQ But I wanted to understand it in a practical way. So I have this demo: https://github.com/DiegoTc/guest-book-js-docker/tree/Running-App-Version-1 It's a simple application running on a kubernetes cluster. https://github.com/DiegoTc/guest-book-js-docker/blob/Running-App-Version-1/argo/deployment.yaml    apiVersion: apps/v1 kind: Deployment metadata:   name: chat-ui spec:   replicas: 1   revisionHistoryLimit: 3   selector:     matchLabels:       app: chat-ui   template:     metadata:       labels:         app: chat-ui     spec:       containers:         - image: diegotc/guestbook:20230803-064434           imagePullPolicy: Alwa...




















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Getting Docker Syntax In Gedit




























I have been working with docker in the last days, and encounter the syntax issue with gedit. Just pure plain text. So make a small search and found an easy way for fixing this. I found Jasper J.F. van den Bosch repository  in GitHub and found the solution for this simple problem.  We need to download the docker.lang file, available here:  https://github.com/ilogue/docker.lang/blob/master/docker.lang   After that, you go to the folder you save the file and do the following command.   sudo mv docker.lang /usr/share/gtksourceview-3.0/language-specs/   If this doesn't work you can try the following:    sudo mv docker.lang  ~/.local/share/gtksourceview-3.0/language-specs/  And that's all!   Screenshot of gedit with no docker lang       Screenshot of gedit with docker lang      




















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Ansible using plugins for dynamic inventories




























 This is a small post about how to use inventory plugins in Ansible. If you are looking the script way I recommend to read this article: http://gloriasilveira.com/setting-up-ansible-for-aws-with-dynamic-inventory-ec2.html  It explains really good this or you can watch this video: https://www.youtube.com/watch?v=LnbqO1kTPqE&t=6s  But if you’re looking to use inventory this article can help you.  First of all, why should I used inventory if all over the internet they’re using the python scripts?  Well, Ansible recommends it:   Inventory plugins take advantage of the most recent updates to Ansible’s core code. We recommend plugins over scripts for dynamic inventory. You can write your own plugin  to connect to additional dynamic inventory sources. https://docs.ansible.com/ansible/latest/user_guide/intro_dynamic_inventory.html  The actual ansible guide is quite good, but there was a step that got me confused, probably my english isn’t so good and I didn’t understood it.  We need to ena...




















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