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helm_Package Management in Kubernetes
Tanveer Alam edited this page Dec 8, 2019
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3 revisions
$ helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION$ helm search hub wordpress
URL CHART VERSION APP VERSION DESCRIPTION
https://hub.helm.sh/charts/bitnami/wordpress 8.0.1 5.3.0 Web publishing platform for building blogs and ...
https://hub.helm.sh/charts/presslabs/wordpress-... v0.6.3 v0.6.3 Presslabs WordPress Operator Helm Chart
https://hub.helm.sh/charts/presslabs/wordpress-... v0.7.3 v0.7.3 A Helm chart for deploying a WordPress site on ...https://hub.helm.sh/charts/bitnami/wordpress
$ helm repo add bitnami https://charts.bitnami.com
"bitnami" has been added to your repositories
$ helm search repo wordpress
NAME CHART VERSION APP VERSION DESCRIPTION
bitnami/wordpress 8.0.1 5.3.0 Web publishing platform for building blogs and ...$ helm install wordpress bitnami/wordpress
NAME: wordpress
LAST DEPLOYED: Sat Dec 7 19:24:18 2019
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
1. Get the WordPress URL:
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
Watch the status with: 'kubectl get svc --namespace default -w wordpress'
export SERVICE_IP=$(kubectl get svc --namespace default wordpress --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}")
echo "WordPress URL: http://$SERVICE_IP/"
echo "WordPress Admin URL: http://$SERVICE_IP/admin"
2. Login with the following credentials to see your blog
echo Username: user
echo Password: $(kubectl get secret --namespace default wordpress -o jsonpath="{.data.wordpress-password}" | base64 --decode)$ helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0 $ helm install wordpress bitnami/wordpress
Error: cannot re-use a name that is still in use
helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0 $ helm install wordpress-1 bitnami/wordpress
NAME: wordpress-1
LAST DEPLOYED: Sat Dec 7 19:38:49 2019
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
1. Get the WordPress URL:
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
Watch the status with: 'kubectl get svc --namespace default -w wordpress-1'
export SERVICE_IP=$(kubectl get svc --namespace default wordpress-1 --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}")
echo "WordPress URL: http://$SERVICE_IP/"
echo "WordPress Admin URL: http://$SERVICE_IP/admin"
2. Login with the following credentials to see your blog
echo Username: user
echo Password: $(kubectl get secret --namespace default wordpress-1 -o jsonpath="{.data.wordpress-password}" | base64 --decode)
$ helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress-1 default 1 2019-12-07 19:38:49.327688934 +0530 IST deployed wordpress-8.0.1 5.3.0 $ helm delete wordpress-1
release "wordpress-1" uninstalled
$ helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0 $ helm install wordpress-1 bitnami/wordpress --version 8.0.0
$ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress-1 default 1 2019-12-07 19:42:27.561867082 +0530 IST deployed wordpress-8.0.0 5.2.4 $ helm upgrade wordpress-1 bitnami/wordpress
$ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress-1 default 2 2019-12-07 19:43:29.073676976 +0530 IST deployed wordpress-8.0.1 5.3.0 Dependency management
$ helm fetch --untar bitnami/wordpress
$ ls -1 wordpress/
charts
Chart.yaml
README.md
requirements.lock
requirements.yaml
templates
values.schema.json
values.yaml
$ tree wordpress/
wordpress/
├── charts
│ └── mariadb
│ ├── Chart.yaml
│ ├── files
│ │ └── docker-entrypoint-initdb.d
│ │ └── README.md
│ ├── OWNERS
│ ├── README.md
│ ├── templates
│ │ ├── _helpers.tpl
│ │ ├── initialization-configmap.yaml
│ │ ├── master-configmap.yaml
│ │ ├── master-pdb.yaml
│ │ ├── master-statefulset.yaml
│ │ ├── master-svc.yaml
│ │ ├── NOTES.txt
│ │ ├── rolebinding.yaml
│ │ ├── role.yaml
│ │ ├── secrets.yaml
│ │ ├── serviceaccount.yaml
│ │ ├── servicemonitor.yaml
│ │ ├── slave-configmap.yaml
│ │ ├── slave-pdb.yaml
│ │ ├── slave-statefulset.yaml
│ │ ├── slave-svc.yaml
│ │ ├── test-runner.yaml
│ │ └── tests.yaml
│ ├── values-production.yaml
│ └── values.yaml
├── Chart.yaml
├── README.md
├── requirements.lock
├── requirements.yaml
├── templates
│ ├── deployment.yaml
│ ├── externaldb-secrets.yaml
│ ├── _helpers.tpl
│ ├── ingress.yaml
│ ├── NOTES.txt
│ ├── pvc.yaml
│ ├── secrets.yaml
│ ├── servicemonitor.yaml
│ ├── svc.yaml
│ ├── tests
│ │ └── test-mariadb-connection.yaml
│ └── tls-secrets.yaml
├── values.schema.json
└── values.yaml
7 directories, 41 files$ rm -rf ./charts/mariadb/
$ helm dep list
NAME VERSION REPOSITORY STATUS
mariadb 7.x.x https://kubernetes-charts.storage.googleapis.com/ missing
$ helm dep update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "bitnami" chart repository
Update Complete. ⎈Happy Helming!⎈
Saving 1 charts
Downloading mariadb from repo https://kubernetes-charts.storage.googleapis.com/
Deleting outdated charts
$ ll ./charts/
total 32
drwxr-xr-x 2 tan tan 4096 Dec 8 11:22 ./
drwxr-xr-x 4 tan tan 4096 Dec 8 11:22 ../
-rw-r--r-- 1 tan tan 22060 Dec 8 11:22 mariadb-7.3.0.tgz
$ helm dep list
NAME VERSION REPOSITORY STATUS
mariadb 7.x.x https://kubernetes-charts.storage.googleapis.com/ ok $ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress-1 default 2 2019-12-07 19:43:29.073676976 +0530 IST deployed wordpress-8.0.1 5.3.0
$ helm delete wordpress-1
release "wordpress-1" uninstalled
$ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress$ helm install wordpress-1 .
NAME: wordpress-1
LAST DEPLOYED: Sun Dec 8 11:27:32 2019
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
1. Get the WordPress URL:
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
Watch the status with: 'kubectl get svc --namespace default -w wordpress-1'
export SERVICE_IP=$(kubectl get svc --namespace default wordpress-1 --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}")
echo "WordPress URL: http://$SERVICE_IP/"
echo "WordPress Admin URL: http://$SERVICE_IP/admin"
2. Login with the following credentials to see your blog
echo Username: user
echo Password: $(kubectl get secret --namespace default wordpress-1 -o jsonpath="{.data.wordpress-password}" | base64 --decode)
$ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
wordpress default 1 2019-12-07 19:24:18.902421987 +0530 IST deployed wordpress-8.0.1 5.3.0
wordpress-1 default 1 2019-12-08 11:27:32.51396584 +0530 IST deployed wordpress-8.0.1 5.3.0Cleanup:
$ helm delete wordpress wordpress-1
release "wordpress" uninstalled
release "wordpress-1" uninstalled
$ helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
$ kubectl get pod
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