ChartMuseum is an opensource Helm Chart Repository written in Go Language with support for cloud storage backends, including Google Cloud Storage, Amazon S3, Microsoft Azure Blob Storage, Alibaba Cloud OSS Storage, Openstack Object Storage, Oracle Cloud Infrastructure Object Storage, Baidu Cloud BOS Storage, Tencent Cloud Object Storage, DigitalOcean Spaces, Minio, and etcd.

Prerequisites

• Helm v3.0.0+
• A persistent storage resource and RW access to it
• Kubernetes StorageClass for dynamic provisioning

Verify Helm Version

root@master:~# helm version
version.BuildInfo{Version:"v3.13.1", GitCommit:"3547a4b5bf5edb5478ce352e18858d8a552a4110", GitTreeState:"clean", GoVersion:"go1.20.8"}

Verify the Default Storage

root@master:~# kubectl get sc
NAME                            PROVISIONER        RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
managed-nfs-storage (default)   arobyte.tech/nfs   Delete          Immediate           false                  118m

Using Local Storage to configure Chartmuseum

root@master:~# cat values.yaml
env:
  open:
    STORAGE: local
persistence:
  enabled: true
  accessMode: ReadWriteOnce
  size: 8Gi
  storageClass: "managed-nfs-storage"

Installation

• Add repository

root@master:~# helm repo add chartmuseum https://chartmuseum.github.io/charts

• Install chart (Helm v3)

root@master:~# kubectl create ns chartmuseum
root@master:~# helm install -f values.yaml chartmuseum chartmuseum/chartmuseum  --set env.open.DISABLE_API=false -n chartmuseum

Edit the svc to convert the type to LoadBalancer

root@master:~# kubectl edit svc chartmuseum  -n chartmuseum

    app.kubernetes.io/instance: chartmuseum
    app.kubernetes.io/name: chartmuseum
  sessionAffinity: None
  type: ClusterIP ---> LoadBalancer

Verify The Chartmuseum is installed successfully

root@master:~# kubectl get pods,svc -n chartmuseum
NAME                               READY   STATUS    RESTARTS   AGE
pod/chartmuseum-6f5dcc8787-7r9lm   1/1     Running   0          54m

NAME                  TYPE           CLUSTER-IP     EXTERNAL-IP     PORT(S)          AGE
service/chartmuseum   LoadBalancer   10.109.118.6   172.16.16.151   8080:32563/TCP   54m

I am using HA Proxy for getting traffic routed to my cluster

root@master:~# cat /etc/haproxy/haproxy.cfg
frontend chartmuseum
    bind 192.168.0.114:6201
    mode tcp
    default_backend chartmuseum

backend chartmuseum
    mode tcp
    balance roundrobin
    server backend_server 172.16.16.151:8080 check

root@master:~# systemctl restart haproxy

Login to Browser and verify the URL

Install the helm-cm plugin to push charts to chartmuseum.

root@master:~# helm create mychart
root@master:~# cd mychart/
root@master:~/mychart# helm package .
Successfully packaged chart and saved it to: /root/mychart/mychart-0.1.0.tgz

root@master:~/mychart# helm cm-push mychart-0.1.0.tgz http://chartmuseum.arobyte.tech:6201
"chartmuseum-1" has been added to your repositories

Now Access the Browser the verify the Chart

Add the repo locally and search for it

root@master:~# helm repo add chartmuseum-local http://chartmuseum.arobyte.tech:6201
"chartmuseum-local" has been added to your repositories
root@master:~# helm search repo chartmuseum-local
NAME                    CHART VERSION   APP VERSION     DESCRIPTION
chartmuseum-local/mychart   0.1.0           1.16.0          A Helm chart for Kubernetes

root@master:~# helm pull chartmuseum-local/mychart
root@master:~# ls -l | grep mychart
-rw-r--r--  1 root root     3957 Feb 29 11:59 mychart-0.1.0.tgz

We can see that we are able to push and pull the charts to and from our local charts.

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