# Arvados Helm Chart
This directory contains a simple Helm chart for Arvados, excluding the Git
-server and SLURM. It's more or less a port of the Kubernetes config generated
-by the Arvados Kelda blueprint.
+server. This is an initial version, there is (a lot of) room for improvement.
-The files should only be considered an example of what a Kubernetes deployment
-might look like -- this is my first Helm chart, and there are definitely things
-that could be cleaner.
+**WARNING**
-## Usage
+This Helm chart does not retain any state after it is deleted. An Arvados
+cluster spun up with this Helm Chart is entirely ephemeral.
-1. Boot a [GKE cluster](https://console.cloud.google.com/kubernetes/) with at least 3 nodes.
- - I tested with 3 n1-standard-1 (1 vCPU, 3.75GB RAM) machines on Kubernetes v1.8.8.
- - It takes a few minutes for the cluster to be initialized.
+**/WARNING**
-2. Reserve a [static IP](https://console.cloud.google.com/networking/addresses) in GCE.
- - Make sure the IP is in the same region as your GKE cluster, and is of the
- "Regional" type.
+## Usage example (GKE)
-3. Install `gcloud`, `kubectl`, and `helm` on your development machine.
+1. Install `gcloud`, `kubectl`, and `helm` on your development machine.
`gcloud` is used to setup the connection to your GKE cluster. `kubectl` is
used to interact with the Kubernetes cluster. `helm` is used to deploy to
the cluster.
- Follow the instructions [here](https://cloud.google.com/sdk/downloads) to install `gcloud`.
- `gcloud components install kubectl` to install `kubectl`.
- - `brew install kubernetes-helm` to install `helm`.
+ - Follow the instructions [here](//docs.helm.sh/using_helm/#installing-helm) to install `helm`.
- If that doesn't work, see the official installation instructions for
[kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl)
and [helm](https://docs.helm.sh/using_helm/#installing-helm).
-3. Connect to the GKE cluster.
+2. Boot a [GKE cluster](https://console.cloud.google.com/kubernetes/) with at
+ least 3 nodes, n1-standard-2 or larger.
+
+ Kubernetes 1.10 is required, because this chart uses the binaryData configmap feature.
+
+ It is also possible to boot the cluster from the command line:
+
+ gcloud container clusters create <CLUSTERNAME> --zone us-central1-a --machine-type n1-standard-2 --cluster-version 1.10.2-gke.3
+
+ It takes a few minutes for the cluster to be initialized.
+
+3. Reserve a [static IP](https://console.cloud.google.com/networking/addresses) in GCE.
+ - Make sure the IP is in the same region as your GKE cluster, and is of the
+ "Regional" type.
+
+4. Connect to the GKE cluster.
+
+ Web:
- Click the "Connect" button next to your [GKE cluster](https://console.cloud.google.com/kubernetes/).
- Execute the "Command-line access" command on your development machine.
+
+ Alternatively, use this command:
+ - gcloud container clusters get-credentials <CLUSTERNAME> --zone us-central1-a --project <YOUR-PROJECT>
+
+ Test:
- Run `kubectl get nodes` to test your connection to the GKE cluster. The
- nodes you specified in step 1 should show up in the output.
+ nodes you specified in step 2 should show up in the output.
4. Install `helm` on the cluster.
- Run the following commands from your development machine. The last three
5. Double click on the certificate and change the trust level to "Always
Trust". The certificate will be named "arvados-test-cert".
-7. Modify the Kubernetes configs to reference your static IP.
- - Replace all references to the IP `8.8.8.8` with the IP allocated in step 1.
- - This can be done automatically with the following command:
- ```
- grep -lr --exclude README.md '8.8.8.8' . | xargs sed -i '' 's/8.8.8.8/<STATIC IP>/g'
- ```
-8. Install the Arvados Kubernetes configs.
- - Run `helm install --name arvados .`
+7. Install the Arvados Kubernetes configs.
+ - Run `helm install --name arvados . --set externalIP=<YOUR-OFFICIAL-IP>`
- If you make a change to the Kubernetes manifests and want to reinstall
the configs, run `helm delete --purge arvados`, followed by the `helm
install` command.
-9. Wait for everything to boot in the cluster. This takes a few minutes from my
- testing.
+8. Wait for everything to boot in the cluster. This takes about 5 minutes.
- `kubectl get pods` should show all the pods as running.
- `kubectl get services` shouldn't show anything as `<pending>`.
- If some services are stuck in `<pending>` check their status with
manually delete all entries under "Forwarding rules" and "Target
pools" in the [console UI](https://console.cloud.google.com/net-services/loadbalancing/advanced/targetPools/list).
- Even after the containers are running, they take a couple minutes to
- download and install various packages. If some components seem down,
+ download and install various packages. If some component seem down,
check its logs with `kubectl logs <POD NAME>` and see if it's fully
- initialized. In my testing, the container has been inaccessible for up to
- 10 minutes after starting.
+ initialized.
+
+10. Connect to Workbench:
+ - Navigate to `https://<STATIC IP>` in your browser. Use the username and
+ password specified in values.yaml to log in.
+
+ Alternatively, use the Arvados cli tools or SDKs:
+
+ Set the environment variables properly:
-10. Connect to the Workbench.
- - Navigate to `https://<STATIC IP>` in your browser.
+ ARVADOS_API_TOKEN=<superUserSecret from values.yaml>
+ ARVADOS_API_HOST=<STATIC IP>:444
+ ARVADOS_API_HOST_INSECURE=true
-11. Destroy the GKE cluster when finished.
+11. Destroy the GKE cluster when finished, via the web or command line:
+ - helm del arvados --purge
+ - gcloud container clusters delete <CLUSTERNAME> --zone us-central1-a
## Future Work
-- The Arvados Dockerfiles need to be rebuilt so that they have the latest `apt`
- metadata. As a workaround, some pods, such as `keep-web` are running `apt-get
- update` when they start.
-- Set the floating IP through `./values.yaml` and have Helm handling templating
- it, rather than manually replacing references to the IP.
- - There may be other values worth templating, such as the number of Keep
- containers to deploy, or the versions of the Arvados packages to install.
-- Figure out a better way of setting API tokens. It's currently hardcoded in
- the config files, and changing it in one location will cause the other
- references to fail.
- ```
- $ grep -r 'thisisnotavery' .
- ./config/api-server/90-init-db.sh: bundle exec script/create_superuser_token.rb thisisnotaverygoodsuperusersecretstring00000000000
- ./config/api-server/90-init-db.sh: bundle exec get_anonymous_user_token.rb -t thisisnotaverygoodanonymoussecretstring00000000000 || true
- ./config/sso/90-init-db.sh: bundle exec script/create_superuser_token.rb thisisnotaverygoodsuperusersecretstring00000000000
- ./config/sso/90-init-db.sh: bundle exec get_anonymous_user_token.rb -t thisisnotaverygoodanonymoussecretstring00000000000 || true
- ./templates/keep-proxy-deployment.yaml: value: "thisisnotaverygoodanonymoussecretstring00000000000"
- ./templates/keep-web-deployment.yaml: value: "thisisnotaverygoodanonymoussecretstring00000000000"
- ./templates/shell-server-deployment.yaml: value: "thisisnotaverygoodsuperusersecretstring00000000000"
- ```
+- Add an option to use an external PostgreSQL database
+- Add an option to use an external Keep storage backend
+- Add Arvados Docker Cleaner to the compute nodes.
- Figure out how to reduce redundant YAML files.
- The Nginx SSL proxies (`./templates/keep-web-https.yaml`,
`./templates/keep-proxy-https.yaml`, `./templates/ws-https.yaml`) are
- The configmap YAMLs are all basically the same.
- This might be possible with partials (a Helm templating feature). Or in a
different templating language such as ksonnet.
-- Add SLURM support
- Support changing keep-store scale. Right now the scale is set to `replicas:
2` in `templates/keep-store-deployment.yaml`. Unfortunately, increasing the scale
isn't as simple as changing the number since the hostnames are hardcoded in
important if autoscaling is added.
- Get the SSL certificate automatically using Lets Encrypt, eliminating the
need for the self-signed certificate generated by the `cert-gen.sh` script.
-- Add SSL to SSO server
- - It's currently being hosted on only HTTP.
projects / arvados-k8s.git / commitdiff