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nacos - an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.

Build Status

Nacos is an easy-to-use platform designed for dynamic service discovery and configuration and service management. It helps you to build cloud native applications and microservices platform easily.

Introduction

This chart bootstraps nacos statefulset on a Kubernetes cluster using the Helm package manager.

Prerequisites

  • Kubernetes 1.19+
  • Helm 3.2.0+

Installing the Chart

To install the chart with the release name my-release:

$ helm install my-release nacos

The command deploys nacos cluster on the Kubernetes cluster in the default configuration. The configuration section lists the parameters that can be configured during installation.

tip: The default user is: nacos The default password is: nacos

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm uninstall my-release

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

Parameters

Global parameters

Name Description Value
global.imageRegistry Global Docker image registry ""
global.imagePullSecrets Global Docker registry secret names as an array []
global.storageClass Global StorageClass for Persistent Volume(s) ""

Common parameters

Name Description Value
nameOverride String to partially override nginx.fullname template (will maintain the release name) ""
fullnameOverride String to fully override nginx.fullname template ""
kubeVersion Force target Kubernetes version (using Helm capabilities if not set) ""
clusterDomain Kubernetes Cluster Domain cluster.local
extraDeploy Extra objects to deploy (value evaluated as a template) []
commonLabels Add labels to all the deployed resources {}
commonAnnotations Add annotations to all the deployed resources {}

nacos parameters

Name Description Value
image.registry nacos image registry docker.io
image.repository nacos image repository nacos/nacos-server
image.tag nacos image tag (immutable tags are recommended) v2.2.0
image.pullPolicy nacos image pull policy IfNotPresent
image.pullSecrets Specify docker-registry secret names as an array []
image.debug Set to true if you would like to see extra information on logs false
hostAliases Deployment pod host aliases []
command Override default container command (useful when using custom images) []
args Override default container args (useful when using custom images) []
extraEnvVars Extra environment variables to be set on nacos containers []
extraEnvVarsCM ConfigMap with extra environment variables ""
extraEnvVarsSecret Secret with extra environment variables ""

nacos deployment parameters

Name Description Value
replicaCount Number of nacos replicas to deploy 1
podLabels Additional labels for nacos pods {}
podAnnotations Annotations for nacos pods {}
podAffinityPreset Pod affinity preset. Ignored if affinity is set. Allowed values: soft or hard ""
podAntiAffinityPreset Pod anti-affinity preset. Ignored if affinity is set. Allowed values: soft or hard soft
nodeAffinityPreset.type Node affinity preset type. Ignored if affinity is set. Allowed values: soft or hard ""
nodeAffinityPreset.key Node label key to match Ignored if affinity is set. ""
nodeAffinityPreset.values Node label values to match. Ignored if affinity is set. []
affinity Affinity for pod assignment {}
nodeSelector Node labels for pod assignment. Evaluated as a template. {}
tolerations Tolerations for pod assignment. Evaluated as a template. {}
priorityClassName Priority class name ""
podSecurityContext.enabled Enabled nacos pods' Security Context false
podSecurityContext.fsGroup Set nacos pod's Security Context fsGroup 1001
podSecurityContext.sysctls sysctl settings of the nacos pods []
containerSecurityContext.enabled Enabled nacos containers' Security Context false
containerSecurityContext.runAsUser Set nacos container's Security Context runAsUser 1001
containerSecurityContext.runAsNonRoot Set nacos container's Security Context runAsNonRoot true
containerPorts.http Sets http port inside nacos container 8080
containerPorts.https Sets https port inside nacos container ""
resources.limits The resources limits for the nacos container {}
resources.requests The requested resources for the nacos container {}
customLivenessProbe Override default liveness probe {}
customReadinessProbe Override default readiness probe {}
healthCheck 简化的健康检测,支持 tcp、http,具体查看 values.yaml
autoscaling.enabled Enable autoscaling for nacos deployment false
autoscaling.minReplicas Minimum number of replicas to scale back ""
autoscaling.maxReplicas Maximum number of replicas to scale out ""
autoscaling.targetCPU Target CPU utilization percentage ""
autoscaling.targetMemory Target Memory utilization percentage ""
extraVolumes Array to add extra volumes []
extraVolumeMounts Array to add extra mount []
serviceAccount.create Enable creation of ServiceAccount for nginx pod false
serviceAccount.name The name of the ServiceAccount to use. ""
serviceAccount.annotations Annotations for service account. Evaluated as a template. {}
serviceAccount.autoMount Auto-mount the service account token in the pod false
sidecars Sidecar parameters []
sidecarSingleProcessNamespace Enable sharing the process namespace with sidecars false
initContainers Extra init containers []
pdb.create Created a PodDisruptionBudget false
pdb.minAvailable Min number of pods that must still be available after the eviction 1
pdb.maxUnavailable Max number of pods that can be unavailable after the eviction 0

Traffic Exposure parameters

Name Description Value
service.type Service type LoadBalancer
service.port Service HTTP port 80
service.httpsPort Service HTTPS port 443
service.nodePorts Specify the nodePort(s) value(s) for the LoadBalancer and NodePort service types. {}
service.targetPort Target port reference value for the Loadbalancer service types can be specified explicitly. {}
service.loadBalancerIP LoadBalancer service IP address ""
service.annotations Service annotations {}
service.externalTrafficPolicy Enable client source IP preservation Cluster
ingress.enabled Set to true to enable ingress record generation false
ingress.pathType Ingress path type ImplementationSpecific
ingress.apiVersion Force Ingress API version (automatically detected if not set) ""
ingress.hostname Default host for the ingress resource nginx.local
ingress.path The Path to Nginx. You may need to set this to '/*' in order to use this with ALB ingress controllers. /
ingress.annotations Additional annotations for the Ingress resource. To enable certificate autogeneration, place here your cert-manager annotations. {}
ingress.tls Create TLS Secret false
ingress.extraHosts The list of additional hostnames to be covered with this ingress record. []
ingress.extraPaths Any additional arbitrary paths that may need to be added to the ingress under the main host. []
ingress.extraTls The tls configuration for additional hostnames to be covered with this ingress record. []
ingress.secrets If you're providing your own certificates, please use this to add the certificates as secrets []
healthIngress.enabled Set to true to enable health ingress record generation false
healthIngress.pathType Ingress path type ImplementationSpecific
healthIngress.hostname When the health ingress is enabled, a host pointing to this will be created example.local
healthIngress.annotations Additional annotations for the Ingress resource. To enable certificate autogeneration, place here your cert-manager annotations. {}
healthIngress.tls Enable TLS configuration for the hostname defined at healthIngress.hostname parameter false
healthIngress.extraHosts The list of additional hostnames to be covered with this health ingress record []
healthIngress.extraTls TLS configuration for additional hostnames to be covered []
healthIngress.secrets TLS Secret configuration []

Metrics parameters

Name Description Value
metrics.serviceMonitor.enabled Creates a Prometheus Operator ServiceMonitor (also requires metrics.enabled to be true) false
metrics.serviceMonitor.namespace Namespace in which Prometheus is running ""
metrics.serviceMonitor.interval Interval at which metrics should be scraped. ""
metrics.serviceMonitor.scrapeTimeout Timeout after which the scrape is ended ""
metrics.serviceMonitor.selector Prometheus instance selector labels {}
metrics.serviceMonitor.additionalLabels Additional labels that can be used so PodMonitor will be discovered by Prometheus {}
metrics.serviceMonitor.relabelings RelabelConfigs to apply to samples before scraping []
metrics.serviceMonitor.metricRelabelings MetricRelabelConfigs to apply to samples before ingestion []
metrics.prometheusRule.enabled if true, creates a Prometheus Operator PrometheusRule (also requires metrics.enabled to be true and metrics.prometheusRule.rules) false
metrics.prometheusRule.namespace Namespace for the PrometheusRule Resource (defaults to the Release Namespace) ""
metrics.prometheusRule.additionalLabels Additional labels that can be used so PrometheusRule will be discovered by Prometheus {}
metrics.prometheusRule.rules Prometheus Rule definitions []

Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

$ helm install my-release \
  --set replicaCount=3 \
    ygqygq2/nacos

The above command sets the imagePullPolicy to Always.

Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,

$ helm install my-release -f values.yaml ygqygq2/nacos

Tip: You can use the default values.yaml

Configuration and installation details

It is strongly recommended to use immutable tags in a production environment. This ensures your deployment does not change automatically if the same tag is updated with a different image.

Bitnami will release a new chart updating its containers if a new version of the main container, significant changes, or critical vulnerabilities exist.

Use a different nacos version

To modify the application version used in this chart, specify a different version of the image using the image.tag parameter and/or a different repository using the image.repository parameter. Refer to the chart documentation for more information on these parameters and how to use them with images from a private registry.

Adding extra environment variables

In case you want to add extra environment variables (useful for advanced operations like custom init scripts), you can use the extraEnvVars property.

extraEnvVars:
  - name: LOG_LEVEL
    value: error

Alternatively, you can use a ConfigMap or a Secret with the environment variables. To do so, use the extraEnvVarsCM or the extraEnvVarsSecret values.

Setting Pod's affinity

This chart allows you to set your custom affinity using the affinity parameter. Find more information about Pod's affinity in the kubernetes documentation.

As an alternative, you can use of the preset configurations for pod affinity, pod anti-affinity, and node affinity available at the bitnami/common chart. To do so, set the podAffinityPreset, podAntiAffinityPreset, or nodeAffinityPreset parameters.

Deploying extra resources

There are cases where you may want to deploy extra objects, such a ConfigMap containing your app's configuration or some extra deployment with a micro service used by your app. For covering this case, the chart allows adding the full specification of other objects using the extraDeploy parameter.

Ingress

This chart provides support for ingress resources. If you have an ingress controller installed on your cluster, such as nginx-ingress-controller or contour you can utilize the ingress controller to serve your application.

To enable ingress integration, please set ingress.enabled to true.

Hosts

Most likely you will only want to have one hostname that maps to this nacos installation. If that's your case, the property ingress.hostname will set it. However, it is possible to have more than one host. To facilitate this, the ingress.extraHosts object can be specified as an array. You can also use ingress.extraTLS to add the TLS configuration for extra hosts.

For each host indicated at ingress.extraHosts, please indicate a name, path, and any annotations that you may want the ingress controller to know about.

For annotations, please see this document. Not all annotations are supported by all ingress controllers, but this document does a good job of indicating which annotation is supported by many popular ingress controllers.

Troubleshooting

Find more information about how to deal with common errors related to Bitnami¡¯s Helm charts in this troubleshooting guide.