Use Case

Set up a multi node docker swarm cluser

References

1. Raft Consensus Algorithm
2. Docker Swarm

Dataflow Diagram

Session 1:

• Set up docker swarm cluster on multiple Ubuntu nodes
  1. What is docker swarm mode? Raft consensus
     • Leader Election
     • Log Replication
  2. Perpare the VMs
     • Copy public key
     • Add Ubuntu user
     • Copy SSH keys to the the Ubuntu user
     • Disable root login and password authentication
     • Enable Ubunut firewall and allow traffic on private network
  3. Install required packages
     • Install Docker
     • Verify docker is installed
     • [Optional] Install AWS CLI if using AWS Secrets manager
     • [Optional] AWS Access Keys
     • Enable log rotate of docker container logs to avoid excessive disk usage
  4. Configure docker swarm cluster
     • Initialize docker swarm on the first host
       • Advertise the docker swarm network on the private network only
     • Copy the docker swarm join tokens to AWS Secrets manager
     • Add rest of the nodes to docker swarm
       • Obtain the join tokens from AWS Secrets manager
       • Join the docker swarm with the first node on the private network only and advertise private network only

Video explanation of the code

Source Code