Harden production workflows and agent admission

deploy/docker-compose.showcase.yml

@@ -7,7 +7,7 @@ services:
   server:
     environment:
       MONLET_STALE_AFTER_SEC: "20"
-      MONLET_DEAD_AFTER_SEC: "40"
+      MONLET_DEAD_AFTER_SEC: "30"
       MONLET_DETECTOR_TICK_SEC: "5"
       MONLET_EVENTS_RETENTION_MONTHS: "1"
       MONLET_OUTBOX_RETENTION_MAX_ROWS: "1000"
@@ -28,6 +28,7 @@ services:
 
   agent-mixed:
     image: monlet-showcase-agent
+    hostname: agent-01
     build:
       context: ..
       dockerfile: deploy/docker/agent.Dockerfile
@@ -36,6 +37,7 @@ services:
     volumes:
       - ./showcase/agents/mixed.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - mixed_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -44,11 +46,13 @@ services:
 
   agent-resolve:
     image: monlet-showcase-agent
+    hostname: agent-02
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/resolve.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - resolve_agent_state:/var/lib/monlet-agent
       - resolve_state:/state
     depends_on:
       server:
@@ -58,11 +62,13 @@ services:
 
   agent-flap:
     image: monlet-showcase-agent
+    hostname: agent-03
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/flap.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - flap_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -71,11 +77,13 @@ services:
 
   agent-timeout:
     image: monlet-showcase-agent
+    hostname: agent-04
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/timeout.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - timeout_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -84,11 +92,13 @@ services:
 
   agent-prometheus-owned:
     image: monlet-showcase-agent
+    hostname: agent-05
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/prometheus_owned.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - prometheus_owned_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -97,11 +107,13 @@ services:
 
   agent-stale:
     image: monlet-showcase-agent
+    hostname: agent-07
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/stale.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - stale_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -110,11 +122,13 @@ services:
 
   agent-dead:
     image: monlet-showcase-agent
+    hostname: agent-08
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
       - ./showcase/agents/dead.toml:/etc/monlet/agent.toml:ro
       - ./showcase/checks:/opt/monlet/checks:ro
+      - dead_agent_state:/var/lib/monlet-agent
     depends_on:
       server:
         condition: service_healthy
@@ -124,6 +138,7 @@ services:
   # No depends_on:server — starts in parallel so it must spool events until server is ready.
   agent-spool-replay:
     image: monlet-showcase-agent
+    hostname: agent-06
     environment:
       MONLET_CONFIG: /etc/monlet/agent.toml
     volumes:
@@ -135,5 +150,12 @@ services:
         condition: service_healthy
 
 volumes:
+  mixed_agent_state:
+  resolve_agent_state:
   resolve_state:
+  flap_agent_state:
+  timeout_agent_state:
+  prometheus_owned_agent_state:
+  stale_agent_state:
+  dead_agent_state:
   spool_replay_state: