go-microservice

Packages

• Chi Router, CORS, & Middleware

Commands required to build and tag then push to docker hub

• docker build -f xxxx-service.dockerfile -t username/xxxx-service:1.0.0 .
• docker push username/xxxx-service:1.0.0 [ Needs to login using docker login" ]

Docker Swarm

• docker login
• docker swarm init
• get token by docker swarm join-token worker OR docker swarm join-token manager
• docker stack deploy -c swarm.yml [ name of the swarm ]
• docker service scale [ name of service ] = [ instances ]
• to kill -> docker service scale [ name of service ] = 0
• to remove -> docker stack rm [ name of stack ]
• to remove swarm -> docker swarm leave --force
• sudo vi /etc/hosts

How to update image on DS

• change version version using docker build -f xxxx-service.dockerfile -t username/xxxx-service:1.0.1 .
• then push
• have 2 instances running
• docker pull ercsnmrs/micro-caddy-production:1.0.1
• docker service update --image [ username/xxxx-service:1.0.1 ] [ service name ]

Linode Linux Notes

• add user -> adduser [ username ]
• make user have sudo privileges -> usermod -aG sudo [ username ]
• create firewall -> ufw allow ssh | ufw allow http | ufw allow https | ufw allow 2377/tcp | ufw allow 7946/tcp | ufw allow 7946/udp | ufw allow 4789/udp | ufw allow 8025/tcp
• ufw allow ssh
• sudo hostnamectl set-hostname node-1
• docker swarm init --advertise-addr [ ip ] then copy swarm token to node 2
• sudo mkdir swarm | sudo chown evm:evm swarm/
• vi swarm.yml
• sudo usermod -aG docker evm
• gluster and SSHFS is one way to share assets over volumes/nodes