Tips on Elastic Certified Engineer Exam

Relationships among Elastic Training Lessons, Elastic Exam Objectives, and Elastic Docs

Presentations

📝 Tips on Elastic Certified Engineer Exam (Chinese Version)

📝 Tips on Elastic Certified Engineer Exam (English Version)

Self-Learning Path

📝 Reorder Exam Objectives (XLSX Version)

📝 Reorder Exam Objectives (PDF Version)

Docker Environments

File	Description
single_node.yml	simple node env
node_role.yml	cluster and node role env
elastic_security.yml	elastic stack security env
backup_and_recovery.yml	backup and recovery env
cross_cluster_search.yml	cross cluster search env
shard_allocation.yml	shard allocation env

How to Use

Startup a testing environment in foreground:

docker-compose -f your_config_file.yml up

Or Startup a testing environment in background:

docker-compose -f your_config_file.yml up -d

Shutdown a testing environment:

docker-compose -f your_config_file.yml down

Or Shutdown a test environment and delete all data:

docker-compose -f your_config_file.yml down -v

Common issues

• Error `bootstrap check failure [1] of [1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

  • Increase the virtual memory areas - 🔗stackoverflow:

        # Change for current session: 
        $ sysctl -w vm.max_map_count=262144
    
        # Tip: modify the /etc/sysctl.conf for permanent changes
    

  • Official Elasticsearch tutorial - docs

• Error ERROR: for <node_name> Cannot create container for service <node_name>: not a directory

  • You are probably on WSL: reboot your pc, prune (docker volume prune) the volumes and try again

• Error FileNotFoundError: [Errno 2] No such file or directory

  • If you are on WSL and have just added a new volume:
    • Cut the container section that use the volume, but keep the volume creation
    • Run the docker-compose command
    • Paste the container section again
    • Run the docker-compose command
  • If you are on WSL and you are sure the code is correct:
    • Restart the docker desktop app
    • Close all WSL window instances
    • Reopen a WSL and clear all containers and volumes
    • Try again