Installing Redis¶

This section explains the steps to install Redis using the Bitnami Redis Helm chart (version 18.0.2) in Kubernetes. Helm simplifies the deployment by managing configurations. The chart sets up a scalable Redis instance with optimal settings for storage, resources and security.

To install Redis, follow the steps:

1. Fetch the Redis Helm chart version 18.0.2 by running the following command:

   helm fetch bitnami/redis --version 18.0.2
   

2. Update the following parameters in the values.yaml file.

   Name	Description	Value
   global.storageClass	Global StorageClass for Persistent Volume(s)	"longhorn-ssd"
   global.redis.password	Global Redis® password (overrides auth.password)	"123456"
   master.resources.limits	The resources limits for the Redis® master containers	{"cpu": "2", "memory": "12Gi"}
   master.resources.requests	The requested resources for the Redis® master containers	{"cpu": "100m", "memory": "6Gi"}
   master.affinity	Affinity for Redis® master pods assignment	{"nodeAffinity": {"requiredDuringSchedulingIgnoredDuringExecution": {"nodeSelectorTerms": [{"matchExpressions": [{"key": "iaas", "operator": "In", "values": ["true"]}]}]}}}
   master.tolerations	Tolerations for Redis® master pods assignment	[{"effect": "NoSchedule", "key": "domain", "operator": "Equal", "value": "iaas"}]
   master.persistence.size	Persistent Volume size	200Gi
   master.service.type	Redis® master service type	NodePort
   master.service.nodePorts.redis	Node port for Redis® master	"30004"
   replica.resources.limits	The resources limits for the Redis® replicas containers	{"cpu": "2", "memory": "15Gi"}
   replica.resources.requests	The requested resources for the Redis® replicas containers	{"cpu": "250m", "memory": "6Gi"}
   replica.affinity	Affinity for Redis® replicas pods assignment	{"nodeAffinity": {"requiredDuringSchedulingIgnoredDuringExecution": {"nodeSelectorTerms": [{"matchExpressions": [{"key": "iaas", "operator": "In", "values": ["true"]}]}]}}}
   replica.tolerations	Tolerations for Redis® replicas pods assignment	[{"effect": "NoSchedule", "key": "domain", "operator": "Equal", "value": "iaas"}]
   replica.persistence.size	Persistent Volume size	200Gi
   metrics.enabled	Start a sidecar Prometheus exporter to expose Redis® metrics	true
   metrics.serviceMonitor.enabled	Create ServiceMonitor resource(s) for scraping metrics using PrometheusOperator	true
   metrics.serviceMonitor.namespace	The namespace in which the ServiceMonitor will be created	"monitoring"
   sysctl.enabled	Enable init container to modify Kernel settings	true
   sysctl.command	Override default init-sysctl container command (useful when using custom images)	['sysctl', '-w', 'net.core.somaxconn=551']

3. Install Redis using Helm by running the following command:

   helm -n mdsp-bk-redis install redis ./
   

Reference¶

For more information, refer to the official Redis Helm chart: Bitnami Redis 18.0.2.