Add customizable ulimit settings for all Docker containers

Add ulimits as a configurable advanced setting for every container,
allowing customization through the web UI. Move hardcoded ulimits
from elasticsearch and zeek into defaults.yaml and fix elasticsearch
ulimits that were incorrectly nested under the environment key.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

salt/docker/defaults.yaml

@@ -9,6 +9,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-elastic-fleet':
       final_octet: 21
       port_bindings:
@@ -16,6 +17,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-elasticsearch':
       final_octet: 22
       port_bindings:
@@ -24,6 +26,10 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits:
+        - memlock=-1:-1
+        - nofile=65536:65536
+        - nproc=4096
     'so-influxdb':
       final_octet: 26
       port_bindings:
@@ -31,6 +37,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-kibana':
       final_octet: 27
       port_bindings:
@@ -38,6 +45,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-kratos':
       final_octet: 28
       port_bindings:
@@ -46,6 +54,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-hydra':
       final_octet: 30
       port_bindings:
@@ -54,6 +63,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-logstash':
       final_octet: 29
       port_bindings:
@@ -70,6 +80,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-nginx':
       final_octet: 31
       port_bindings:
@@ -81,6 +92,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-nginx-fleet-node':
       final_octet: 31
       port_bindings:
@@ -88,6 +100,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-redis':
       final_octet: 33
       port_bindings:
@@ -96,11 +109,13 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-sensoroni':
       final_octet: 99
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-soc':
       final_octet: 34
       port_bindings:
@@ -108,16 +123,19 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-backend':
       final_octet: 36
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-filestream':
       final_octet: 37
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-frontend':
       final_octet: 38
       port_bindings:
@@ -125,11 +143,13 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-manager':
       final_octet: 39
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-gatekeeper':
       final_octet: 40
       port_bindings:
@@ -137,6 +157,7 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-strelka-coordinator':
       final_octet: 41
       port_bindings:
@@ -144,11 +165,13 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-elastalert':
       final_octet: 42
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-elastic-fleet-package-registry':
       final_octet: 44
       port_bindings:
@@ -156,11 +179,13 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-idh':
       final_octet: 45
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-elastic-agent':
       final_octet: 46
       port_bindings:
@@ -169,11 +194,13 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-telegraf':
       final_octet: 99
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []
     'so-suricata':
       final_octet: 99
       custom_bind_mounts: []
@@ -186,6 +213,9 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits:
+        - core=0
+        - nofile=1048576:1048576
     'so-kafka':
       final_octet: 88
       port_bindings:
@@ -196,3 +226,4 @@ docker:
       custom_bind_mounts: []
       extra_hosts: []
       extra_env: []
+      ulimits: []

salt/docker/soc_docker.yaml

@@ -39,6 +39,12 @@ docker:
         helpLink: docker.html
         multiline: True
         forcedType: "[]string"
+      ulimits:
+        description: Ulimits for the container.
+        advanced: True
+        helpLink: docker.html
+        multiline: True
+        forcedType: "[]string"
     so-elastic-fleet: *dockerOptions
     so-elasticsearch: *dockerOptions
     so-influxdb: *dockerOptions
@@ -62,42 +68,6 @@ docker:
     so-idh: *dockerOptions
     so-elastic-agent: *dockerOptions
     so-telegraf: *dockerOptions
-    so-suricata:
-      final_octet:
-        description: Last octet of the container IP address.
-        helpLink: docker.html
-        readonly: True
-        advanced: True
-        global: True
-      port_bindings:
-        description: List of port bindings for the container.
-        helpLink: docker.html
-        advanced: True
-        multiline: True
-        forcedType: "[]string"
-      custom_bind_mounts:
-        description: List of custom local volume bindings.
-        advanced: True
-        helpLink: docker.html
-        multiline: True
-        forcedType: "[]string"
-      extra_hosts:
-        description: List of additional host entries for the container.
-        advanced: True
-        helpLink: docker.html
-        multiline: True
-        forcedType: "[]string"
-      extra_env:
-        description: List of additional ENV entries for the container.
-        advanced: True
-        helpLink: docker.html
-        multiline: True
-        forcedType: "[]string"
-      ulimits:
-        description: Ulimits for the container, in bytes.
-        advanced: True
-        helpLink: docker.html
-        multiline: True
-        forcedType: "[]string"
+    so-suricata: *dockerOptions
     so-zeek: *dockerOptions
     so-kafka: *dockerOptions