Elasticsearch

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In this video, you’ll see how to configure Docker credentials, generate certificates, and install Elasticsearch using Helm.

  • [02:30]
    Configure Docker credentials to allow downloading custom Docker images.
  • [03:36]
    Visit site docker.com and fetch these values - user id, email and create a new personal access token.
  • [04:50]
    Validate docker credentials are accurate (look for Login Succeeded). Create kubernetes secrets to store the docker credentials.
  • [05:30]
    Generate custom certificates to go with the Elasticsearch install. This will take 2 minutes or so as we download docker image to generate certificates.
  • [07:00]
    Install Elasticsearch. See the installation via Headlamp dashboard.
  • [11:42]
    Video ends

Runs as a persistent data store for the Camunda platform.
It is a distributed, RESTful search and analytics engine capable of addressing a growing number of use cases.

Edit this block in text editor before running the same.
Replace the username, password (token) and email as mentioned.


export UNAMESPACE={{UNAMESPACE}}


# replace user id, email, token appropriately
DOCKER_USER_ID=put-your-value-here-docker-id-example-hjrc
DOCKER_USER_EMAIL=put-your-value-here-example-user-at-gmail.com
DOCKER_USER_TOKEN=put-your-value-here-keep-it-secret


# let's also test if it is valid. you should see confirmation 'Login Succeeded'
echo $DOCKER_USER_TOKEN | docker login  --username "$DOCKER_USER_ID"  --password-stdin


kubectl create secret docker-registry registry-camunda-cloud  \
--namespace={{UNAMESPACE}} \
--docker-server=registry.camunda.cloud \
--docker-username=${DOCKER_USER_ID} \
--docker-password=${DOCKER_USER_TOKEN} \
--docker-email=${DOCKER_USER_EMAIL}


kubectl create secret docker-registry registry-docker-hub  \
    --namespace={{UNAMESPACE}} \
    --docker-server=hub.docker.com \
    --docker-username=${DOCKER_USER_ID} \
    --docker-password=${DOCKER_USER_TOKEN} \
    --docker-email=${DOCKER_USER_EMAIL}



###CAUTION: Look for Login Succeeded confirmation after running the docker login command. If you see any error, please check the values and try again.

Install elastic components - elk certs
Important: Make sure Docker CLI command is supported on the terminal window.


UNAMESPACE={{UNAMESPACE}} envsubst < elk-makefile | sh

After this, you should see secrets created in your namespace (via Project Lens UI app).
# Config => secret/elastic-certificates created
# Config => secret/elasticsearch-master-certs created
# Config => secret/elastic-jks created
###CAUTION: You may have to run the script twice. Sometimes the certs are not created on first run. Please check and proceed.

Install Elasticsearch


helm repo add elastic https://helm.elastic.co


helm repo update


helm install elasticsearch elastic/elasticsearch -n {{UNAMESPACE}} -f elasticsearch-ap-21.yaml

After this, you should see Elastic pod running.
# It may take about 3 to 5 minutes for the pod to be in running state.

Post Command-Set Execution: Click to view screen shot - Elasticsearch pod up and running.

Click on image to enlarge
Elasticsearch pod status

Next: Camunda app components