Simple demo of Trino HA using Nginx reverse proxy.

docker-compose.yml

version: '3.3'
services:

  trino_a:
    image: trinodb/trino
    container_name: trino_a
    ports:
      - 8080:8080
    volumes:
      - ./trino_a.config.properties:/etc/trino/config.properties
      - ./jvm.config:/etc/trino/jvm.config

  trino_b:
    image: trinodb/trino
    container_name: trino_b
    ports:
      - 8081:8081
    volumes:
      - ./trino_b.config.properties:/etc/trino/config.properties
      - ./jvm.config:/etc/trino/jvm.config

  trino_worker:
    image: trinodb/trino
    container_name: trino_worker
    volumes:
      - ./trino_worker.config.properties:/etc/trino/config.properties
      - ./jvm.config:/etc/trino/jvm.config

  nginx:
    image: nginx
    container_name: nginx
    ports:
      - 80:80
    volumes:
      - ./nginx.conf:/etc/nginx/conf.d/default.conf

jvm.config

-server
-Xmx2G
-XX:+UseG1GC
-XX:+UseGCOverheadLimit
-XX:+ExplicitGCInvokesConcurrent
-XX:+HeapDumpOnOutOfMemoryError
-XX:+ExitOnOutOfMemoryError
-XX:ReservedCodeCacheSize=150M
-Duser.timezone=UTC
-Djdk.attach.allowAttachSelf=true

nginx.conf

upstream trino {
   server trino_a:8080 fail_timeout=3s max_fails=1;
   server trino_b:8081 backup;
}

server {
    listen       80;
    server_name  localhost;
    location / {
        proxy_pass   http://trino;
        proxy_redirect  http://trino/ /;
        proxy_connect_timeout 3;

        proxy_set_header          Host            $host;
        proxy_set_header          X-Real-IP       $remote_addr;
        proxy_set_header          X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}

trino_a.config.properties

coordinator=true
node-scheduler.include-coordinator=true
http-server.http.port=8080
query.max-memory=1.4GB
query.max-memory-per-node=1.4GB
query.max-total-memory-per-node=1.4GB
discovery.uri=http://localhost:8080

trino_b.config.properties

coordinator=true
node-scheduler.include-coordinator=true
http-server.http.port=8081
query.max-memory=1.4GB
query.max-memory-per-node=1.4GB
query.max-total-memory-per-node=1.4GB
discovery.uri=http://localhost:8081

trino_worker.config.properties

coordinator=false
query.max-memory=1.4GB
query.max-memory-per-node=1.4GB
query.max-total-memory-per-node=1.4GB
discovery.uri=http://nginx:80

If expose nginx with ports (not 80 443), should use proxy_set_header Host $http_host; to make trinodb build correct urls in response. $http_host includes port and $host not includes port.

My Nginx config:

server {
    listen 8180;
    server_name _;
    chunked_transfer_encoding off;
    location / {
        allow 127.0.0.1;
        deny all;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass http://127.0.0.1:8080;
    }
}