clickhouse-eks

clickhouse-eks

A Helm chart for ClickHouse running on AWS EKS across AZs using a nodeSelector to pin resources to run on specific VMs types

Installing the Chart

# add the altinity chart repository
helm repo add altinity https://helm.altinity.com

# use this command to install clickhouse-eks chart (it will also create a `clickhouse` namespace)
helm install clickhouse altinity/clickhouse-eks --namespace clickhouse --create-namespace

Use -f flag to override default values: helm install -f newvalues.yaml

Upgrading the Chart

# get latest repository versions
helm repo update

# upgrade to a newer version using the release name (`clickhouse`)
helm upgrade clickhouse altinity/clickhouse-eks --namespace clickhouse

Uninstalling the Chart

# uninstall using the release name (`clickhouse`)
helm uninstall clickhouse --namespace clickhouse

This command removes all the Kubernetes components associated with the chart and deletes the release.

Connecting to your ClickHouse Cluster

# list your pods
kubectl get pods --namespace clickhouse

# pick any of your available pods and connect through the clickhouse-client
kubectl exec -it chi-eks-dev-0-0-0 --namespace clickhouse -- clickhouse-client

Use kubectl port forward to access your ClickHouse cluster from outside: kubectl port-forward service clickhouse-eks 9000:9000 & clickhouse-client

Values

Key	Type	Default	Description
all.metadata.labels.application_group	string	"eks"	The name of the application group
clickhouse.cluster	string	"dev"	Cluster name
clickhouse.extraContainers	list	[]	Extra containers for clickhouse pods
clickhouse.extraVolumes	list	[]	Extra volumes for clickhouse pods
clickhouse.image	string	"altinity/clickhouse-server:24.3.12.76.altinitystable"	ClickHouse server image
clickhouse.keeper_name	string	"keeper-eks"	Name of the keeper cluster
clickhouse.name	string	"eks"	Metadata name
clickhouse.node_selector	string	"m6i.large"	AWS instance type
clickhouse.password	string	nil	ClickHouse user password
clickhouse.service_type	string	"cluster-ip"	Possible service types are cluster-ip, internal-loadbalancer and external-loadbalancer
clickhouse.storage	string	"50Gi"	Storage size for ClickHouse data
clickhouse.storage_class_name	string	"gp2"	Storage class for ClickHouse data
clickhouse.user	string	"default"	ClickHouse user name
clickhouse.zones	list	["us-east-1a","us-east-1a","us-east-1c"]	AWS availability zones for creating replicas