KinD cluster

Create local Kubernetes in Docker (KinD) clusters for deployment and testing.

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This repository is designed as my personal cat litter box, where I experiment unsteadily and intermittently.

Clone this repository at your own risk.

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Tested on following environment:

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Linuxmint
Description:	Linux Mint 20.3
Release:	20.3
Codename:	una

$ uname -r
5.15.0-107-generic

Running start.sh will perform the following tasks:

• before creating local cluster, the script will check if the following programs are installed in your machine and will (try to) install the missing ones:

  • Docker (Community Edition v24.0.5-1)

  • kubectl (v1.28.0)

  • Helm (v3.12.3)

  • KinD

• install components found in config file into all new local clusters:

  • NGINX=true will install nginx (as IngressController).

  • DASHBOARD=true will install Skooner dashboard. An access token is created and printed in *.token file (located in root directory) for each cluster: copy and paste its content into the dashboard login page located from http://localhost:9080 on. This is not optimal and I could integrate OIDC with the dashboard instead of generating an access token every time I want to login to the dashboard.

  • OPERATOR_SDK=true will install Operator SDK (TODO).

  • NUM_CLUSTERS will create more clusters: each component (NGINX, DASHBOARD, ...) will be installed in every cluster.

  • EXTRA_MASTERS will add more master nodes; by default a cluster is created with only one master node.

  • NUM_WORKERS will add more worker nodes; by default, a cluster is created with only one worker node.

Following commands were necessary when creating more than one cluster:

$ sudo sysctl fs.inotify.max_user_instances=1280 # It was 128
$ sudo sysctl fs.inotify.max_user_watches=655360 # It was 65536