Helm Chart Generator

Small microservice for generate HELM charts. See also Command-line client.

QuickStart

docker run -d --name hcg --rm -p 8080:8080 egeneralov/helm-chart-generator
wget 127.0.0.1:8080/download/$(curl -d@payload.json 127.0.0.1:8080/generate/)

Details

• generate json
  • host
  • version
  • image
  • imageTag
  • port
• POST it to /generate/
  • answer will be filename like ${host}-${version}.tar.gz
• GET /download/${filename}
  • answer will be contents

note for k8s deployment

• create PVC with ReadWriteMany
• apply for current deployment
• scale it, if you have many CI requests

How to

go to local repository

cd ~/.helm/repository/local/

generate chart

export VERSION=1.0
hcg --endpoint 178.128.193.32:1234 --host egeneralov.ru --port 8080 --version ${VERSION} --image egeneralov/helm-chart-generator --tag v${VERSION} --save

Run systemd helm server

cat << EOF > /etc/systemd/system/helm.service
[Unit]
Description=Helm local repository
[Service]
Type=simple
Restart=always
WorkingDir=/root/backend/
Environment=HOME=/root/
ExecStart=/usr/local/sbin/helm serve
[Install]
WantedBy=multi-user.target
EOF

systemctl enable helm.service
systemctl start helm.service

verify repository

root@master:~# helm search | grep local
local/egeneralov.ru                  	1.0.0        	                            	Helm chart for Kubernetes.                        

install chart

root@master:~# helm install local/egeneralov.ru --name hcg

verify installation

root@master:~# helm status hcg
LAST DEPLOYED: Sun Sep  2 04:57:16 2018
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/Service
NAME  TYPE       CLUSTER-IP   EXTERNAL-IP  PORT(S)   AGE
hcg   ClusterIP  10.0.176.96  <none>       8080/TCP  2m

==> v1beta1/Deployment
NAME  DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
hcg   1        1        1           1          2m

==> v1beta1/Ingress
NAME  HOSTS          ADDRESS  PORTS  AGE
hcg   egeneralov.ru  80, 443  2m

==> v1alpha1/Certificate
NAME  AGE
hcg   2m

==> v1/Pod(related)
NAME                  READY  STATUS   RESTARTS  AGE
hcg-766b4966c5-scndq  1/1    Running  0         2m

generate next version

export VERSION=1.0.1
hcg --endpoint 178.128.193.32:1234 --host egeneralov.ru --port 8080 --version ${VERSION} --image egeneralov/helm-chart-generator --tag v${VERSION} --save

upgrade chart

root@master:~# systemctl restart helm
root@master:~# helm upgrade hcg local/egeneralov.ru

Release "hcg" has been upgraded. Happy Helming!
LAST DEPLOYED: Sun Sep  2 05:17:09 2018
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1beta1/Deployment
NAME  DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
hcg   1        2        1           0          11m

==> v1beta1/Ingress
NAME  HOSTS          ADDRESS  PORTS  AGE
hcg   egeneralov.ru  80, 443  11m

==> v1alpha1/Certificate
NAME  AGE
hcg   11m

==> v1/Pod(related)
NAME                  READY  STATUS             RESTARTS  AGE
hcg-766b4966c5-54sk9  0/1    ContainerCreating  0         0s
hcg-76db9666b6-ddjz4  0/1    Running            5         11m

==> v1/Service
NAME  TYPE       CLUSTER-IP   EXTERNAL-IP  PORT(S)   AGE
hcg   ClusterIP  10.0.33.220  <none>       8080/TCP  11m