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Cédric MenassaandKubernetes Prow Robot
358053b4e2
* [add] deploymentStrategy on HackMD chart Signed-off-by: Cédric Menassa <cedric.menassa@gmail.com> * [rem] trailing space Signed-off-by: Cédric Menassa <cedric.menassa@gmail.com>
81 lines
3.5 KiB
Markdown
81 lines
3.5 KiB
Markdown
# HackMD
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[HackMD](https://hackmd.io) is a realtime, multiplatform collaborative markdown note editor.
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## Introduction
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This chart bootstraps a [HackMD](https://github.com/hackmdio/docker-hackmd) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
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It also packages the [PostgreSQL](https://github.com/kubernetes/charts/tree/master/stable/postgresql) which is required for bootstrapping a PostgreSQL deployment for the database requirements of the HackMD application.
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## Prerequisites
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- Kubernetes 1.8+
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- PV provisioner support in the underlying infrastructure
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## Install
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```console
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$ git clone https://github.com/hackmdio/docker-hackmd.git
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$ helm install stable/hackmd
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```
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## Configuration
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The following configurations may be set. It is recommended to use values.yaml for overwriting the hackmd config.
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Parameter | Description | Default
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--------- | ----------- | -------
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`deploymentStrategy` | Deployment strategy. | `RollingUpdate`
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`replicaCount` | How many replicas to run. | 1
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`image.repository` | Name of the image to run, without the tag. | [hackmdio/hackmd](https://github.com/hackmdio/docker-hackmd)
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`image.tag` | The image tag to use. | 1.3.0-alpine
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`image.pullPolicy` | The kubernetes image pull policy. | IfNotPresent
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`service.name` | The kubernetes service name to use. | hackmd
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`service.type` | The kubernetes service type to use. | ClusterIP
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`service.port` | Service port. | 3000
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`ingress.enabled` | If true, Ingress will be created | `false`
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`ingress.annotations` | Ingress annotations | `[]`
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`ingress.hosts` | Ingress hostnames | `[]`
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`ingress.tls` | Ingress TLS configuration (YAML) | `[]`
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`resources` | Resource requests and limits | `{}`
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`persistence.enabled` | If true, Persistent Volume Claim will be created | `true`
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`persistence.accessModes` | Persistent Volume access modes | `[ReadWriteOnce]`
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`persistence.annotations` | Persistent Volume annotations | `{}`
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`persistence.existingClaim` | Persistent Volume existing claim name | `""`
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`persistence.size` | Persistent Volume size | `2Gi`
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`persistence.storageClass` | Persistent Volume Storage Class | `unset`
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`extraVars` | Hackmd's extra environment variables | `[]`
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`podAnnotations` | Pod annotations | `{}`
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`sessionSecret` | Hackmd's session secret | `""` (Randomly generated)
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`postgresql.install` | Enable PostgreSQL as a chart dependency | `true`
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`postgresql.imageTag` | The image tag for PostgreSQL | `9.6.2`
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`postgresql.postgresUser` | PostgreSQL User to create | `hackmd`
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`postgresql.postgresHost` | PostgreSQL host (if `postgresql.install == false`) | `nil`
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`postgresql.postgresPassword` | PostgreSQL Password for the new user | random 10 characters
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`postgresql.postgresDatabase` | PostgreSQL Database to create | `hackmd`
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### Use persistent volume for image uploads
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If you want to use a Kubernetes Persistent volume for image upload (enabled by default), you can encourter a problem where your volume doesn't have proper ownershuip, so HackMD won't be able to write into it. You can use set the `HMD_IMAGE_UPLOAD_TYPE` to `filesystem` in your `values.yaml` to have the Docker entrypoint change volume's ownership:
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```yaml
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extraVars:
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- name: HMD_IMAGE_UPLOAD_TYPE
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value: filesystem
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```
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### Use behind a TLS reverse proxy
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If you use HackMD behind a reverse proxy that does TLS decryption and forwards traffic in plain HTTP, you have to enable the following variables in your `values.yaml`:
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```yaml
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extraVars:
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- name: CMD_DOMAIN
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value: change.this.to.your.own.fqdn
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- name: CMD_PROTOCOL_USESSL
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value: "true"
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- name: CMD_URL_ADDPORT
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value: "false"
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```
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