From 846fe3a73b3fb70daa099d76ac05cd8872f08b84 Mon Sep 17 00:00:00 2001
From: Travis Brown <travisb@nexthop.ai>
Date: Thu, 12 Mar 2026 16:46:25 +0000
Subject: [PATCH 1/3] [Nexthop] Add empty FSDB config

This default, empty FSDB configuration is required to support FSDB
starting as a service.
---
 .../templates/centos-09.0/root_files/etc/coop/fsdb/current  | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current

diff --git a/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
new file mode 100644
index 0000000000000..06a096ae4351f
--- /dev/null
+++ b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
@@ -0,0 +1,6 @@
+{
+  "defaultCommandLineArgs": {},
+  "trustedSubnets": [],
+  "publishers": {},
+  "subscribers": {}
+}

From 0df427a8d3fa720c3b2d26c66dd8bc9b42626a5d Mon Sep 17 00:00:00 2001
From: Travis Brown <travisb@nexthop.ai>
Date: Mon, 30 Mar 2026 16:20:58 +0000
Subject: [PATCH 2/3] Copy fsdb config from link_test_configs

The empty config prevents FSDB from crashing on startup, but isn't
terribly useful. Copy the recent link_test_config to be the Distro
Image bootstrap FSDB config as it has more useful defaults.
---
 .../root_files/etc/coop/fsdb/current          | 67 ++++++++++++++++++-
 1 file changed, 64 insertions(+), 3 deletions(-)

diff --git a/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
index 06a096ae4351f..04f6516bac3b8 100644
--- a/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
+++ b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
@@ -1,6 +1,67 @@
 {
-  "defaultCommandLineArgs": {},
+  "defaultCommandLineArgs": {
+    "serveHeartbeats": "true",
+    "statsSubscriptionHeartbeat_s": "5",
+    "useIdPathsForSubs": "true"
+  },
   "trustedSubnets": [],
-  "publishers": {},
-  "subscribers": {}
+  "publishers": {
+    "agent": {
+      "paths": [
+        {
+          "path": { "raw": ["agent"] },
+          "isExpected": true,
+          "isStats": false
+        },
+        {
+          "path": { "raw": ["agent"] },
+          "isExpected": true,
+          "isStats": true
+        }
+      ],
+      "skipThriftStreamLivenessCheck": false
+    },
+    "build_info": {
+      "paths": [
+        {
+          "path": { "raw": ["build_info"] },
+          "isExpected": false,
+          "isStats": false
+        }
+      ],
+      "skipThriftStreamLivenessCheck": true
+    },
+    "qsfp_service": {
+      "paths": [
+        {
+          "path": { "raw": ["qsfp_service"] },
+          "isExpected": true,
+          "isStats": false
+        },
+        {
+          "path": { "raw": ["qsfp_service"] },
+          "isExpected": true,
+          "isStats": true
+        }
+      ],
+      "skipThriftStreamLivenessCheck": false
+    }
+  },
+  "subscribers": {
+    ":agent": {
+      "trackReconnect": true,
+      "allowExtendedSubscriptions": true,
+      "numExpectedSubscriptions": 0
+    },
+    "fboss2": {
+      "trackReconnect": false,
+      "allowExtendedSubscriptions": true,
+      "numExpectedSubscriptions": 1
+    },
+    "switch_agent": {
+      "trackReconnect": true,
+      "allowExtendedSubscriptions": false,
+      "numExpectedSubscriptions": 1
+    }
+  }
 }

From 7541e9f66e41e3a232667e7de4521c4898537f05 Mon Sep 17 00:00:00 2001
From: Travis Brown <travisb@nexthop.ai>
Date: Mon, 30 Mar 2026 18:38:25 +0000
Subject: [PATCH 3/3] Add sensor_service

---
 .../centos-09.0/root_files/etc/coop/fsdb/current   | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
index 04f6516bac3b8..8ff7c8c01f10c 100644
--- a/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
+++ b/fboss-image/image_builder/templates/centos-09.0/root_files/etc/coop/fsdb/current
@@ -45,6 +45,20 @@
         }
       ],
       "skipThriftStreamLivenessCheck": false
+    },
+    "sensor_service": {
+      "paths": [
+        {
+          "isExpected": false,
+          "isStats": true,
+          "path": {
+            "raw": [
+              "sensor_service"
+            ]
+          }
+        }
+      ],
+      "skipThriftStreamLivenessCheck": false
     }
   },
   "subscribers": {