fix: Queue health monitor should only run on worker processes (#6228)

server/index.ts

@@ -10,7 +10,6 @@ import Koa from "koa";
 import helmet from "koa-helmet";
 import logger from "koa-logger";
 import Router from "koa-router";
-import uniq from "lodash/uniq";
 import { AddressInfo } from "net";
 import stoppable from "stoppable";
 import throng from "throng";
@@ -27,17 +26,11 @@ import { checkConnection, sequelize } from "./storage/database";
 import RedisAdapter from "./storage/redis";
 import Metrics from "./logging/Metrics";
 
-// The default is to run all services to make development and OSS installations
-// easier to deal with. Separate services are only needed at scale.
-const serviceNames = uniq(
-  env.SERVICES.split(",").map((service) => service.trim())
-);
-
 // The number of processes to run, defaults to the number of CPU's available
 // for the web service, and 1 for collaboration during the beta period.
 let processCount = env.WEB_CONCURRENCY;
 
-if (serviceNames.includes("collaboration")) {
+if (env.SERVICES.includes("collaboration")) {
   if (processCount !== 1) {
     Logger.info(
       "lifecycle",
@@ -114,14 +107,14 @@ async function start(id: number, disconnect: () => void) {
   app.use(router.routes());
 
   // loop through requested services at startup
-  for (const name of serviceNames) {
+  for (const name of env.SERVICES) {
     if (!Object.keys(services).includes(name)) {
       throw new Error(`Unknown service ${name}`);
     }
 
     Logger.info("lifecycle", `Starting ${name} service`);
     const init = services[name];
-    await init(app, server, serviceNames);
+    await init(app, server, env.SERVICES);
   }
 
   server.on("error", (err) => {