feat(conf): enable reuseport on all listeners

Signed-off-by: Joshua Schmid <[email protected]>

changelog/unreleased/kong/feat-reuseport-on-listeners.yml

@@ -0,0 +1,3 @@
+message: add `reuseport` option to listeners
+type: feature
+scope: Configuration

kong.conf.default

@@ -427,7 +427,7 @@
 # HYBRID MODE CONTROL PLANE
 #------------------------------------------------------------------------------
 
-#cluster_listen = 0.0.0.0:8005
+#cluster_listen = 0.0.0.0:8005 reuseport
                          # Comma-separated list of addresses and ports on
                          # which the cluster control plane server should listen
                          # for data plane connections.
@@ -731,7 +731,7 @@
 
 #mem_cache_size = 128m           # Size of each of the two shared memory caches
                                  # for traditional mode database entities
-                                 # and runtime data, `kong_core_cache` and 
+                                 # and runtime data, `kong_core_cache` and
                                  # `kong_cache`.
                                  #
                                  # The accepted units are `k` and `m`, with a minimum
@@ -1910,7 +1910,7 @@
 
 # The Admin GUI for Kong Gateway.
 
-#admin_gui_listen = 0.0.0.0:8002, 0.0.0.0:8445 ssl
+#admin_gui_listen = 0.0.0.0:8002 reuseport, 0.0.0.0:8445 ssl reuseport
                         # Kong Manager Listeners
                         #
                         # Comma-separated list of addresses and ports on which

kong/templates/kong_defaults.lua

@@ -27,9 +27,9 @@ node_id = NONE
 proxy_listen = 0.0.0.0:8000 reuseport backlog=16384, 0.0.0.0:8443 http2 ssl reuseport backlog=16384
 stream_listen = off
 admin_listen = 127.0.0.1:8001 reuseport backlog=16384, 127.0.0.1:8444 http2 ssl reuseport backlog=16384
-admin_gui_listen = 0.0.0.0:8002, 0.0.0.0:8445 ssl
+admin_gui_listen = 0.0.0.0:8002 reuseport, 0.0.0.0:8445 ssl reuseport
 status_listen = 127.0.0.1:8007 reuseport backlog=16384
-cluster_listen = 0.0.0.0:8005
+cluster_listen = 0.0.0.0:8005 reuseport
 cluster_control_plane = 127.0.0.1:8005
 cluster_cert = NONE
 cluster_cert_key = NONE

spec/01-unit/03-conf_loader_spec.lua

@@ -58,7 +58,8 @@ describe("Configuration loader", function()
     assert.equal("eventual", conf.worker_consistency)
     assert.same({"127.0.0.1:8001 reuseport backlog=16384", "127.0.0.1:8444 http2 ssl reuseport backlog=16384"}, conf.admin_listen)
     assert.same({"0.0.0.0:8000 reuseport backlog=16384", "0.0.0.0:8443 http2 ssl reuseport backlog=16384"}, conf.proxy_listen)
-    assert.same({"0.0.0.0:8002", "0.0.0.0:8445 ssl"}, conf.admin_gui_listen)
+    assert.same({"0.0.0.0:8002 reuseport", "0.0.0.0:8445 ssl reuseport"}, conf.admin_gui_listen)
+    assert.same({"0.0.0.0:8005 reuseport"}, conf.cluster_listen)
     assert.equal("/", conf.admin_gui_path)
     assert.equal("logs/admin_gui_access.log", conf.admin_gui_access_log)
     assert.equal("logs/admin_gui_error.log", conf.admin_gui_error_log)
@@ -175,13 +176,13 @@ describe("Configuration loader", function()
     assert.equal(8002, conf.admin_gui_listeners[1].port)
     assert.equal(false, conf.admin_gui_listeners[1].ssl)
     assert.equal(false, conf.admin_gui_listeners[1].http2)
-    assert.equal("0.0.0.0:8002", conf.admin_gui_listeners[1].listener)
+    assert.equal("0.0.0.0:8002 reuseport", conf.admin_gui_listeners[1].listener)
 
     assert.equal("0.0.0.0", conf.admin_gui_listeners[2].ip)
     assert.equal(8445, conf.admin_gui_listeners[2].port)
     assert.equal(true, conf.admin_gui_listeners[2].ssl)
     assert.equal(false, conf.admin_gui_listeners[2].http2)
-    assert.equal("0.0.0.0:8445 ssl", conf.admin_gui_listeners[2].listener)
+    assert.equal("0.0.0.0:8445 ssl reuseport", conf.admin_gui_listeners[2].listener)
 
     assert.equal("0.0.0.0", conf.proxy_listeners[1].ip)
     assert.equal(8000, conf.proxy_listeners[1].port)