feat: healthcheck (keephq#2820)

docs/deployment/monitoring.mdx

@@ -0,0 +1,22 @@
+---
+title: "Monitoring"
+sidebarTitle: "Monitoring"
+---
+
+# Healthchecks
+
+Keep's Backend healthcheck url:
+```
+{BACKEND_API_URL}/healthcheck
+```
+
+Keep's Frontend healthcheck url:
+```
+{FRONTEND_URL}/api/healthcheck
+```
+
+# Prometheus Metrics
+
+(TBD)
+
+> Please note that [/api/metrics](api-ref/metrics/get-metrics) are not designed for production instance's health monitoring, but for usage monitoring by a specific tenant.

docs/mint.json

@@ -57,6 +57,7 @@
       "group": "Deployment",
       "pages": [
         "deployment/configuration",
+        "deployment/monitoring",
         {
           "group": "Authentication",
           "pages": [

keep-ui/app/api/healthcheck/route.ts

@@ -0,0 +1,8 @@
+import { NextResponse } from 'next/server'
+
+export async function GET() {
+  return NextResponse.json({
+    status: 'ok',
+    timestamp: new Date().toISOString()
+  })
+}