There is a Kubernetes package manager called Helm.
I don't use it that often, but every time I search for how to use it, I make a note of it for myself.
What is Helm?
When adding functionality to Kubernetes, deploy it to the cluster with a YAML file and the kubectl create -f command, just as you would deploy an app.
If there are multiple related resources, it is necessary to edit and deploy a YAML file for each.
Helm is a tool that allows you to template these various deployments that are connected to each other, and to put them all together in a single command.
Configuration values can be changed in parts, mistakes in editing YAML files are less likely to occur, and once deployed, they can be deleted at once.
install
The official website is as follows
binary install
Install the Helm client on a local machine.
Download the file, unzip it, and put the binary in your path, but the following command will do it for you.
curl -L https://git.io/get_helm.sh | bash
The "get_helm.sh" file remains, so delete it.
Create Account
Create a Helm account "tiller" on Kubernates and attach admi authority.
rbac-config.yaml
apiVersion: v1 kind: ServiceAccount metadata: name: tiller namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: tiller roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: tiller namespace: kube-system
kubectl create -f rbac-config.yaml
Helm Settings
Set up Helm with the account "tiller" you created.
helm init --service-account tiller --history-max 200
You should add "--history-max 200".
tiller削除
Remove tiller from Kubernetes cluster (to use when starting over from tiller installation)
helm reset -f
Helm Usage
Update repositories to the latest version
helm repo update
package installation
helm install <パッケージ名>
This will give the release a name of *your own accord, so if you want to specify a release name, use the following. (*The name is really given without permission.)
helm install <パッケージ名> --name <リリース名>
Install by namespace specification
helm install <パッケージ名> --namespace <ネームスペース名>
Set parameter values and install
helm install <パッケージ名> \ --set a=b # Set {a:b} \c} --set a=b,c=d # Set {a:b, c:d} \cH:d} --set a.b=c # Set {a:{b:c}} \c --set a={b,c} # {a:[b, c]} set\
Parameter values may be read from an external file
helm install <パッケージ名> \ -f <パラメータYAMLファイル> \
It is safer to file when there are a wide variety of parameters.
Parameter Confirmation
Display of parameter information that can be set in the package
helm inspect values <パッケージ名>
Customize the parameters displayed here by partially overwriting and updating them with "--set" or "-f".
Remove installed packages
helm delete <リリース名> --purge
Confirmation of installed packages
status indication
helm status <リリース名>
Confirmation of set parameters
helm get values <リリース名>
(a) look
helm list --all
Displayed only during operation
helm list
