diff --git a/inst/loops/config.py b/inst/loops/config.py
index 5504dd5..02b7939 100644
--- a/inst/loops/config.py
+++ b/inst/loops/config.py
@@ -5,8 +5,10 @@ from os import getenv
 
 load_dotenv()
 
+server_id = getenv('SERVER_ID')
 zope_conf = getenv('ZOPE_CONF', 'zope.conf')
-server_port = getenv('SERVER_PORT', '8099')
+server_port = getenv('SERVER_PORT',
+        server_id and getenv(f'SERVER_PORT_{server_id}')) or '8080'
 
 shell_pw = (getenv('SHELL_PW', 'dummy'))
 loops_path = (getenv('LOOPS_PATH', None))
diff --git a/inst/loops/zope.conf b/inst/loops/zope.conf
index ab4a5e2..4d3fb8a 100644
--- a/inst/loops/zope.conf
+++ b/inst/loops/zope.conf
@@ -13,12 +13,12 @@ site-definition application.zcml
 
 # Uncomment this if you want to connect to a ZEO server instead:
 #  <zeoclient>
-#    server localhost:8100
+#    server $(ZEO_SERVER)
 #    storage 1
 #    # ZEO client cache, in bytes
-#    cache-size 20MB
+#    cache-size $(ZEO_CACHE_SIZE)
 #    # Uncomment to have a persistent disk cache
-#    #client zeo1
+#    #client zeo1$(SERVER_ID)
 #  </zeoclient>
 </zodb>
 
@@ -28,7 +28,7 @@ site-definition application.zcml
   # the tokens STDOUT or STDERR.
 
   <logfile>
-    path var/log/z3-deploy.log
+    path var/log/loops-$(SERVER_ID).log
     formatter zope.exceptions.log.Formatter
   </logfile>