GCP Installation Steps

This post describes how to install Myelin on Google Cloud Platform.

1. Create namespace:

   NAMESPACE=myelin
   kubectl create ns $NAMESPACE
   kubectl label namespace $NAMESPACE istio-injection=enabled
   

2. Install Helm client: Installation

3. Install Tiller:

   kubectl -n kube-system create sa tiller
   kubectl create clusterrolebinding tiller --clusterrole cluster-admin --serviceaccount=kube-system:tiller
   helm init --service-account tiller
   

4. Add Myelin repo to Helm:

   helm repo add myelin.io https://myelin-helm-charts.storage.googleapis.com/
   helm repo update
   

5. Setup authentication:

   Create a file secrets.yaml with the following content:

   licence: LICENCE
   
   authenticateDocker:
     enabled: true
   
   dockerSecret:
     auths:
       dockerRegistryUrl:
         auth: AUTHBASE64
   
   artifacts:
     accesskey: ACCESSKEY
     secretkey: SECRETKEY
   
   authenticateGithub:
     enabled: true
   
   github:
     sshPrivateKey: PRIVATE_KEY
     sshPublicKey: PUBLIC_KEY
   

   • licence: Get a free licence from here.

   • dockerRegistryUrl: add the repository url instead of this line, for example use https://gcr.io for Google Container Registry.

   • dockerSecret.auths.auth: Auth token. To obtain this token for GCP, go to IAM -> Service Accounts and create a new key. Then convert this file to a base64 encoded string: echo -n '_json_key:' | cat - key.json | base64

   
   Enable s3 interoperability for Google Storage here. Select the interoperability tab and create a new key, which can be used for the following:

   • artifacts.accesskey: gcp access key
   • artifacts.secretkey: gcp secret key

   
   To access Github using SSH add the following (set authenticateGithub.enabled to false if you are accessing public repositories via https):

   • github.sshPrivateKey: private key
   • github.sshPublicKey: public key

   
   Create a config file gcp-config.yaml:

   rook-ceph:
     agent:
       flexVolumeDirPath: /home/kubernetes/flexvolume
   
   axonController:
     dockerServer: dockerRegistryUrl
     dockerNamespace: namespace
     config:
       artifactRepository:
         archiveLogs: true
         s3:
           bucket: myelin-dev
           endpoint: storage.googleapis.com
           region: eu-west-1
           accessKeySecret:
             name: myelin-artifacts
             key: accesskey
           secretKeySecret:
             name: myelin-artifacts
             key: secretkey
   
   deployerController:
     config:
       artifactRepository:
         archiveLogs: true
         s3:
           bucket: myelin-dev
           endpoint: storage.googleapis.com
           region: eu-west-1
           accessKeySecret:
             name: myelin-artifacts
             key: accesskey
           secretKeySecret:
             name: myelin-artifacts
             key: secretkey
   

   The following values should be filled in:

   • axonController.dockerServer: repository url, use gcr.io for Container Registry. This repository is used to store docker images created by Myelin.
   • axonController.dockerNamespace: namespace of the repository, for GCR it is the same as the project name.
   • axonController.config.artifactRepository.s3.bucket: Google Storage bucket
   • axonController.config.artifactRepository.s3.region: Google Storage region.
   • deployerController.config.artifactRepository.s3.bucket: Google Storage bucket
   • deployerController.config.artifactRepository.s3.region: Google Storage region.

   Create a bucket that stores temporary files on Google Storage. Make sure the region is the same as the bucket region.

6. Install the Helm chart:

   • Install Myelin (add the –devel flag if you would like to install the latest development version)

     RELEASE_NAME=myelin-app
     CONFIG_FILE=gcp-config.yaml
     SECRETS_FILE=secrets.yaml
     NAMESPACE=myelin
     
     helm install myelin.io/myelin \
          --debug \
          --devel \
          --name $RELEASE_NAME \
          -f $CONFIG_FILE,$SECRETS_FILE \
          --set createCustomResource=true \
          --set deployerController.createCustomResource=true \
          --namespace=$NAMESPACE
     

7. Install the Myelin cli:

   MacOS installation:

   brew tap myelin/cli https://github.com/myelinio/homebrew-cli.git
   brew install myelin
   

   Linux installation:

   curl -sSL -o /usr/local/bin/myelin https://myelin-cli.storage.googleapis.com/cli-linux/v0.4.0/myelin-linux-amd64
   chmod +x /usr/local/bin/myelin
   # Add bash completion
   apt-get install bash-completion
   myelin completion bash > /etc/bash_completion.d/myelin
   

8. Test first Axon:

   • Create Axon:

     myelin submit https://raw.githubusercontent.com/myelinio/myelin-examples/master/recommender_rf_demo/recommender-demo.yaml --namespace=$NAMESPACE
     

   • Watch Axon execution:

     myelin watch axon ml-rec-rf --namespace=$NAMESPACE
     

   • Get Axon public REST endpoints:

     REST_URL=$(myelin endpoint ml-rec-rf  --namespace=$NAMESPACE -o json | jq -r '.[0].modelStable.url')
     curl -XPOST ${REST_URL}predict --data '{"data":{"ndarray":[5411, 5439]}}'