# HashiCorp Consul Helm Chart

[HashiCorp Consul](https://www.consul.io/) has multiple components, but as a whole, it is a tool for discovering and configuring services in your infrastructure

## TL;DR

```console
$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm install my-release bitnami/consul
```

## Introduction

This chart bootstraps a [HashiCorp Consul](https://github.com/bitnami/bitnami-docker-consul) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.

Bitnami charts can be used with [Kubeapps](https://kubeapps.com/) for deployment and management of Helm Charts in clusters. This Helm chart has been tested on top of [Bitnami Kubernetes Production Runtime](https://kubeprod.io/) (BKPR). Deploy BKPR to get automated TLS certificates, logging and monitoring for your applications.

## Prerequisites

- Kubernetes 1.12+
- Helm 2.12+ or Helm 3.0-beta3+
- PV provisioner support in the underlying infrastructure

## Installing the Chart

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

```console
$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm install my-release bitnami/consul
```

These commands deploy HashiCorp Consul on the Kubernetes cluster in the default configuration. The [Parameters](#parameters) section lists the parameters that can be configured during installation.

> **Tip**: List all releases using `helm list`

## Uninstalling the Chart

To uninstall/delete the `my-release` deployment:

```console
$ helm delete my-release
```
The command removes all the Kubernetes components associated with the chart and deletes the release. Remove also the chart using `--purge` option:

```console
$ helm delete --purge my-release
```

## Parameters

The following table lists the configurable parameters of the HashiCorp Consul chart and their default values.

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `global.imageRegistry`                    | Global Docker Image registry                                                                                         | `nil`                                                        |
| `global.imagePullSecrets`                 | Global Docker registry secret names as an array                                                                      | `[]` (does not add image pull secrets to deployed pods)      |
| `global.storageClass`                     | Global storage class for dynamic provisioning                                                                        | `nil`                                                        |

### Common parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `nameOverride`                            | String to partially override consul.fullname                                                                         | `nil`                                                        |
| `fullnameOverride`                        | String to fully override consul.fullname                                                                             | `nil`                                                        |
| `clusterDomain`                           | Default Kubernetes cluster domain                                                                                    | `cluster.local`                                              |
| `commonLabels`                            | Labels to add to all deployed objects                                                                                | `nil`                                                        |
| `commonAnnotations`                       | Annotations to add to all deployed objects                                                                           | `[]`                                                         |
| `extraDeploy`                             | Array of extra objects to deploy with the release (evaluated as a template)                                          | `nil`                                                        |

### HashiCorp Consul parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `image.registry`                          | HashiCorp Consul image registry                                                                                      | `docker.io`                                                  |
| `image.repository`                        | HashiCorp Consul image name                                                                                          | `bitnami/consul`                                             |
| `image.tag`                               | HashiCorp Consul image tag                                                                                           | `{TAG_NAME}`                                                 |
| `image.pullPolicy`                        | Image pull policy                                                                                                    | `IfNotPresent`                                               |
| `image.pullSecrets`                       | Specify docker-registry secret names as an array                                                                     | `[]` (does not add image pull secrets to deployed pods)      |
| `image.debug`                             | Specify if debug logs should be enabled                                                                              | `false`                                                      |
| `datacenterName`                          | HashiCorp Consul datacenter name                                                                                     | `dc1`                                                        |
| `domain`                                  | HashiCorp Consul domain                                                                                              | `consul`                                                     |
| `raftMultiplier`                          | Multiplier used to scale key Raft timing parameters                                                                  | `1`                                                          |
| `gossipKey`                               | Gossip key for all members                                                                                           | `nil`                                                        |
| `tlsEncryptionSecretName`                 | Name of existing secret with TLS encryption data                                                                     | `nil`                                                        |
| `configuration`                           | HashiCorp Consul configuration to be injected as ConfigMap                                                           | `{}`                                                         |
| `existingConfigmap`                       | Name of existing ConfigMap with HashiCorp Consul configuration                                                       | `nil`                                                        |
| `localConfig`                             | Extra configuration that will be added to the default one                                                            | `nil`                                                        |
| `command`                                 | Override default container command (useful when using custom images)                                                 | `nil`                                                        |
| `args`                                    | Override default container args (useful when using custom images)                                                    | `nil`                                                        |
| `extraEnvVars`                            | Extra environment variables to be set on HashiCorp Consul container                                                  | `{}`                                                         |
| `extraEnvVarsCM`                          | Name of existing ConfigMap containing extra env vars                                                                 | `nil`                                                        |
| `extraEnvVarsSecret`                      | Name of existing Secret containing extra env vars                                                                    | `nil`                                                        |
| `containerPorts.http`                     | Port to open for HTTP in Consul                                                                                      | `8500`                                                       |
| `containerPorts.dns`                      | Port to open for DNS server in Consul                                                                                | `8600`                                                       |
| `containerPorts.rcp`                      | Port to open for RCP in Consul                                                                                       | `8400`                                                       |
| `containerPorts.rpcServer`                | Port to open for RCP Server in Consul                                                                                | `8300`                                                       |
| `containerPorts.serfLAN`                  | Port to open for Serf LAN in Consul                                                                                  | `8301`                                                       |

### Statefulset parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `replicaCount`                            | Number of HashiCorp Consul replicas                                                                                  | `1`                                                          |
| `updateStrategy`                          | Update strategy type for the statefulset                                                                             | `RollingUpdate`                                              |
| `rollingUpdatePartition`                  | Partition update strategy                                                                                            | `nil`                                                        |
| `priorityClassName`                       | HashiCorp Consul priorityClassName                                                                                   | `nil`                                                        |
| `podManagementPolicy`                     | StatefulSet pod management policy                                                                                    | `OrderedReady`                                               |
| `podAnnotations`                          | Additional pod annotations                                                                                           | `{}`                                                         |
| `podLabels`                               | Additional pod labels                                                                                                | `{}`                                                         |
| `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                                                                                          | `{}` (evaluated as a template)                               |
| `nodeSelector`                            | Node labels for pod assignment                                                                                       | `{}` (evaluated as a template)                               |
| `tolerations`                             | Tolerations for pod assignment                                                                                       | `[]` (evaluated as a template)                               |
| `podSecurityContext.enabled`              | Enable security context for HashiCorp Consul pods                                                                    | `true`                                                       |
| `podSecurityContext.fsGroup`              | Group ID for the volumes of the pod                                                                                  | `1001`                                                       |
| `containerSecurityContext.enabled`        | HashiCorp Consul Container securityContext                                                                           | `true`                                                       |
| `containerSecurityContext.runAsUser`      | User ID for the HashiCorp Consul container                                                                           | `1001`                                                       |
| `resources.limits`                        | The resources limits for HashiCorp Consul containers                                                                 | `{}`                                                         |
| `resources.requests`                      | The requested resources for HashiCorp Consul containers                                                              | `{}`                                                         |
| `livenessProbe`                           | Liveness probe configuration for HashiCorp Consul                                                                    | Check `values.yaml` file                                     |
| `readinessProbe`                          | Readiness probe configuration for HashiCorp Consul                                                                   | Check `values.yaml` file                                     |
| `customLivenessProbe`                     | Override default liveness probe                                                                                      | `nil`                                                        |
| `customReadinessProbe`                    | Override default readiness probe                                                                                     | `nil`                                                        |
| `extraVolumeMounts`                       | Optionally specify extra list of additional volumeMounts for hashicorp consul container                              | `[]`                                                         |
| `extraVolumes`                            | Optionally specify extra list of additional volumes for hashicorp consul container                                   | `[]`                                                         |
| `initContainers`                          | Add additional init containers to the hashicorp consul pods                                                          | `{}` (evaluated as a template)                               |
| `sidecars`                                | Add additional sidecar containers to the hashicorp consul pods                                                       | `{}` (evaluated as a template)                               |
| `pdb.create`                              | Enable/disable a Pod Disruption Budget creation                                                                      | `false`                                                      |
| `pdb.minAvailable`                        | Minimum number/percentage of pods that should remain scheduled                                                       | `1`                                                          |
| `pdb.maxUnavailable`                      | Maximum number/percentage of pods that may be made unavailable                                                       | `nil`                                                        |

### Exposure parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `service.enabled`                         | Use a service to access HashiCorp Consul Ui                                                                          | `true`                                                       |
| `service.port`                            | HashiCorp Consul UI svc port                                                                                         | `80`                                                         |
| `service.type`                            | Kubernetes Service Type                                                                                              | `ClusterIP`                                                  |
| `service.nodePort`                        | Kubernetes node port for HashiCorp Consul UI                                                                         | `""`                                                         |
| `service.annotations`                     | Annotations for HashiCorp Consul UI service                                                                          | `{}` (evaluated as a template)                               |
| `service.loadBalancerIP`                  | IP if HashiCorp Consul UI service type is `LoadBalancer`                                                             | `nil`                                                        |
| `ingress.enabled`                         | Enable ingress resource for Management console                                                                       | `false`                                                      |
| `ingress.path`                            | Path for the default host                                                                                            | `/`                                                          |
| `ingress.certManager`                     | Add annotations for cert-manager                                                                                     | `false`                                                      |
| `ingress.hostname`                        | Default host for the ingress resource                                                                                | `consul-ui.local`                                            |
| `ingress.annotations`                     | Ingress annotations                                                                                                  | `[]`                                                         |
| `ingress.tls`                             | Enable TLS configuration for the hostname defined at `ingress.hostname` parameter                                    | `false`                                                      |
| `ingress.existingSecret`                  | Existing secret for the Ingress TLS certificate                                                                      | `nil`                                                        |
| `ingress.extraHosts[0].name`              | Additional hostnames to be covered                                                                                   | `nil`                                                        |
| `ingress.extraHosts[0].path`              | Additional hostnames to be covered                                                                                   | `nil`                                                        |
| `ingress.extraTls[0].hosts[0]`            | TLS configuration for additional hostnames to be covered                                                             | `nil`                                                        |
| `ingress.extraTls[0].secretName`          | TLS configuration for additional hostnames to be covered                                                             | `nil`                                                        |
| `ingress.secrets[0].name`                 | TLS Secret Name                                                                                                      | `nil`                                                        |
| `ingress.secrets[0].certificate`          | TLS Secret Certificate                                                                                               | `nil`                                                        |
| `ingress.secrets[0].key`                  | TLS Secret Key                                                                                                       | `nil`                                                        |

### Persistence parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `persistence.enabled`                     | Enable HashiCorp Consul data persistence using PVC                                                                   | `true`                                                       |
| `persistence.storageClass`                | PVC Storage Class for HashiCorp Consul data volume                                                                   | `nil`                                                        |
| `persistence.annotations`                 | Persistent Volume Claim annotations Annotations                                                                      | `{}` (evaluated as a template)                               |
| `persistence.accessMode`                  | PVC Access Mode for HashiCorp Consul data volume                                                                     | `[ReadWriteOnce]`                                            |
| `persistence.size`                        | PVC Storage Request for HashiCorp Consul data volume                                                                 | `8Gi`                                                        |

### Volume Permissions parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `volumePermissions.enabled`               | Enable init container that changes the owner and group of the persistent volume(s) mountpoint to `runAsUser:fsGroup` | `false`                                                      |
| `volumePermissions.image.registry`        | Init container volume-permissions image registry                                                                     | `docker.io`                                                  |
| `volumePermissions.image.repository`      | Init container volume-permissions image name                                                                         | `bitnami/minideb`                                            |
| `volumePermissions.image.tag`             | Init container volume-permissions image tag                                                                          | `buster`                                                     |
| `volumePermissions.image.pullPolicy`      | Init container volume-permissions image pull policy                                                                  | `Always`                                                     |
| `volumePermissions.image.pullSecrets`     | Specify docker-registry secret names as an array                                                                     | `[]` (does not add image pull secrets to deployed pods)      |
| `volumePermissions.resources.limits`      | Init container volume-permissions resource  limits                                                                   | `{}`                                                         |
| `volumePermissions.resources.requests`    | Init container volume-permissions resource  requests                                                                 | `{}`                                                         |

### Metrics parameters

| Parameter                                 | Description                                                                                                          | Default                                                      |
|-------------------------------------------|----------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|
| `metrics.enabled`                         | Start a side-car prometheus exporter                                                                                 | `false`                                                      |
| `metrics.image`                           | Exporter image                                                                                                       | `bitnami/consul-exporter`                                    |
| `metrics.imageTag`                        | Exporter image tag                                                                                                   | `{TAG_NAME}`                                                 |
| `metrics.imagePullPolicy`                 | Exporter image pull policy                                                                                           | `IfNotPresent`                                               |
| `metrics.resources`                       | Exporter resource requests/limit                                                                                     | `{}`                                                         |
| `metrics.podAnnotations`                  | Exporter annotations                                                                                                 | `{}`                                                         |
| `metrics.service.type`                    | Kubernetes Service type (consul metrics)                                                                             | `ClusterIP`                                                  |
| `metrics.service.annotations`             | Annotations for the services to monitor                                                                              | {}                                                           |
| `metrics.service.loadBalancerIP`          | loadBalancerIP if redis metrics service type is `LoadBalancer`                                                       | `nil`                                                        |
| `metrics.serviceMonitor.enabled`          | Create ServiceMonitor Resource for scraping metrics using PrometheusOperator                                         | `false`                                                      |
| `metrics.serviceMonitor.namespace`        | Namespace which Prometheus is running in                                                                             | `monitoring`                                                 |
| `metrics.serviceMonitor.interval`         | Interval at which metrics should be scraped                                                                          | `30s`                                                        |
| `metrics.serviceMonitor.scrapeTimeout`    | Specify the timeout after which the scrape is ended                                                                  | `nil`                                                        |
| `metrics.serviceMonitor.relabellings`     | Specify Metric Relabellings to add to the scrape endpoint                                                            | `nil`                                                        |
| `metrics.serviceMonitor.honorLabels`      | honorLabels chooses the metric's labels on collisions with target labels.                                            | `false`                                                      |
| `metrics.serviceMonitor.additionalLabels` | Used to pass Labels that are required by the Installed Prometheus Operator                                           | `{}`                                                         |
| `metrics.serviceMonitor.release`          | Used to pass Labels release that sometimes should be custom for Prometheus Operator                                  | `nil`                                                        |

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

```console
$ helm install my-release --set domain=consul-domain,gossipKey=secretkey bitnami/consul
```

The above command sets the HashiCorp Consul domain to `consul-domain` and sets the gossip key to `secretkey`.

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

```console
$ helm install my-release -f values.yaml bitnami/consul
```

> **Tip**: You can use the default [values.yaml](values.yaml)

## Configuration and installation details

### [Rolling VS Immutable tags](https://docs.bitnami.com/containers/how-to/understand-rolling-tags-containers/)

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.

### Production configuration

This chart includes a `values-production.yaml` file where you can find some parameters oriented to production configuration in comparison to the regular `values.yaml`. You can use this file instead of the default one.

- Start a side-car prometheus exporter:

```diff
- metrics.enabled: false
+ metrics.enabled: true
```

- Create a Pod disruption budget:

```diff
- pdb.create: false
+ pdb.create: true
```

### Using custom configuration

This helm chart supports to customize the whole configuration file.

You can specify the Hashicorp Consul configuration using the `configuration` parameter.

In addition to this option, you can also set an external ConfigMap with all the configuration files. This is done by setting the `existingConfigmap` parameter. Note that this will override the previous option.

### Ingress

This chart provides support for ingress resources. If you have an ingress controller installed on your cluster, such as [nginx-ingress](https://kubeapps.com/charts/stable/nginx-ingress) or [traefik](https://kubeapps.com/charts/stable/traefik) you can utilize the ingress controller to serve your ASP.NET Core 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 ASP.NET Core 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](https://github.com/kubernetes/ingress-nginx/blob/master/docs/user-guide/nginx-configuration/annotations.md). 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.

### TLS Secrets

This chart will facilitate the creation of TLS secrets for use with the ingress controller, however, this is not required.  There are three common use cases:

- Helm generates/manages certificate secrets
- User generates/manages certificates separately
- An additional tool (like [kube-lego](https://kubeapps.com/charts/stable/kube-lego)) manages the secrets for the application

In the first two cases, one will need a certificate and a key.  We would expect them to look like this:

- certificate files should look like (and there can be more than one certificate if there is a certificate chain)

```console
-----BEGIN CERTIFICATE-----
MIID6TCCAtGgAwIBAgIJAIaCwivkeB5EMA0GCSqGSIb3DQEBCwUAMFYxCzAJBgNV
...
jScrvkiBO65F46KioCL9h5tDvomdU1aqpI/CBzhvZn1c0ZTf87tGQR8NK7v7
-----END CERTIFICATE-----
```

- keys should look like:

```console
-----BEGIN RSA PRIVATE KEY-----
MIIEogIBAAKCAQEAvLYcyu8f3skuRyUgeeNpeDvYBCDcgq+LsWap6zbX5f8oLqp4
...
wrj2wDbCDCFmfqnSJ+dKI3vFLlEz44sAV8jX/kd4Y6ZTQhlLbYc=
-----END RSA PRIVATE KEY-----
```

If you are going to use Helm to manage the certificates, please copy these values into the `certificate` and `key` values for a given `ingress.secrets` entry.

If you are going to manage TLS secrets outside of Helm, please know that you can create a TLS secret (named `consul-ui.local-tls` for example).

Please see [this example](https://github.com/kubernetes/contrib/tree/master/ingress/controllers/nginx/examples/tls) for more information.

#### Enable TLS encryption between servers

You must manually create a secret containing your PEM-encoded certificate authority, your PEM-encoded certificate, and your PEM-encoded private key.

> Take into account that you will need to create a config map with the proper configuration.

If the secret is specified, the chart will locate those files at `/opt/bitnami/consul/certs/`, so you will want to use the below snippet to configure HashiCorp Consul TLS encryption in your config map:

```
  "ca_file": "/opt/bitnami/consul/certs/ca.pem",
  "cert_file": "/opt/bitnami/consul/certs/consul.pem",
  "key_file": "/opt/bitnami/consul/certs/consul-key.pem",
  "verify_incoming": true,
  "verify_outgoing": true,
  "verify_server_hostname": true,
```

After creating the secret, you can install the helm chart specyfing the secret name using `tlsEncryptionSecretName=consul-tls-encryption`.

### Metrics

The chart can optionally start a metrics exporter endpoint on port `9107` for [prometheus](https://prometheus.io). The data exposed by the endpoint is intended to be consumed by a prometheus chart deployed within the cluster and as such the endpoint is not exposed outside the cluster.

### 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.

```yaml
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` properties.

### Setting Pod's affinity

This chart allows you to set your custom affinity using the `affinity` paremeter. Find more infomation about Pod's affinity in the [kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity).

As an alternative, you can use of the preset configurations for pod affinity, pod anti-affinity, and node affinity available at the [bitnami/common](https://github.com/bitnami/charts/tree/master/bitnami/common#affinities) chart. To do so, set the `podAffinityPreset`, `podAntiAffinityPreset`, or `nodeAffinityPreset` parameters.

### Sidecars and Init Containers

If you have a need for additional containers to run within the same pod as MongoDB, you can do so via the `sidecars` config parameter. Simply define your container according to the Kubernetes container spec.

```yaml
sidecars:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
      - name: portname
       containerPort: 1234
```

Similarly, you can add extra init containers using the `initContainers` parameter.

```yaml
initContainers:
  - name: your-image-name
    image: your-image
    imagePullPolicy: Always
    ports:
      - name: portname
        containerPort: 1234
```

## Persistence

The [Bitnami HashiCorp Consul](https://github.com/bitnami/bitnami-docker-consul) image stores the HashiCorp Consul data at the `/bitnami` path of the container.

Persistent Volume Claims are used to keep the data across deployments. This is known to work in GCE, AWS, and minikube.
See the [Parameters](#parameters) section to configure the PVC or to disable persistence.

### Adjust permissions of persistent volume mountpoint

As the image run as non-root by default, it is necessary to adjust the ownership of the persistent volume so that the container can write data into it.

By default, the chart is configured to use Kubernetes Security Context to automatically change the ownership of the volume. However this feature does not work in all Kubernetes distributions.
As an alternative, this chart supports using an initContainer to change the ownership of the volume before mounting it in the final destination.

You can enable this initContainer by setting `volumePermissions.enabled` to `true`.

## Upgrading

### 8.0.0

- Several parameters were renamed or dissapeared in favor of new ones on this major version:
  - `securityContext.*` is deprecated in favor of `podSecurityContext` and `containerSecurityContext`.
  - `replicas` is renamed to `replicaCount`.
  - `updateStrategy.type` is renamed to `updateStrategy`.
  - `configmap` is renamed to `configuration`.
- Chart labels were adapted to follow the [Helm charts standard labels](https://helm.sh/docs/chart_best_practices/labels/#standard-labels).
- This version also introduces `bitnami/common`, a [library chart](https://helm.sh/docs/topics/library_charts/#helm) as a dependency. More documentation about this new utility could be found [here](https://github.com/bitnami/charts/tree/master/bitnami/common#bitnami-common-library-chart). Please, make sure that you have updated the chart dependencies before executing any upgrade.

### 7.0.0

Consul pods are now deployed in parallel in order to bootstrap the cluster and be discovered.

The field `podManagementPolicy` can't be updated in a StatefulSet, so you need to destroy it before you upgrade the chart to this version.

```console
$ kubectl delete statefulset consul
$ helm upgrade <DEPLOYMENT_NAME> bitnami/consul
```

### To 6.0.0

This release updates the Bitnami Consul container to `1.6.1-debian-9-r6`, which is based on Bash instead of Node.js.

### To 3.1.0

Consul container was moved to a non-root approach. There shouldn't be any issue when upgrading since the corresponding `securityContext` is enabled by default. Both the container image and the chart can be upgraded by running the command below:

```
$ helm upgrade my-release bitnami/consul
```

If you use a previous container image (previous to **1.4.0-r16**) disable the `securityContext` by running the command below:

```
$ helm upgrade my-release bitnami/consul --set securityContext.enabled=fase,image.tag=XXX
```

### To 2.0.0

Backwards compatibility is not guaranteed unless you modify the labels used on the chart's deployments.
Use the workaround below to upgrade from versions previous to 2.0.0. The following example assumes that the release name is consul:

```console
$ kubectl delete statefulset consul --cascade=false
```
