Log only non-default config

lib/cluster.js

@@ -20,6 +20,7 @@
 
 const cluster = require("cluster");
 const logger = require("./logger");
+const config = require("./config");
 
 const VERSION = require("../package.json").version;
 
@@ -41,8 +42,13 @@ function getConfig() {
   let conf = [];
   const keys = Object.keys(process.env);
   for (let k of keys)
-    if (k.startsWith("GENIEACS_"))
-      conf.push(`${k.slice(9)}=${process.env[k]}`);
+    if (k.startsWith("GENIEACS_")) {
+      const name = k.slice(9);
+      const value = process.env[k];
+      const def = config.getDefault(name);
+      if (def == null || value !== `${def}`)
+        conf.push(`${name}=${value}`);
+    }
 
   return conf.join(",");
 }