observability: add k8s API/kubelet tracing, Alloy, Mimir and Loki

Wire kube-apiserver and kubelet tracing to a Jaeger collector on
docker-29, deploy Grafana Alloy in-cluster to ship logs/metrics, and
stand up Mimir + Loki on docker-30 as their backing stores.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

vms-home/docker-29/tracing/docker-compose.yaml

@@ -0,0 +1,14 @@
+services:
+  jaeger:
+    image: jaegertracing/jaeger:2.18.0
+    container_name: jaeger
+    restart: unless-stopped
+    user: root
+    command: ["--config", "/jaeger/config.yaml"]
+    volumes:
+      - ./jaeger-config.yaml:/jaeger/config.yaml:ro
+      - ./badger:/badger
+    ports:
+      - "4317:4317"    # OTLP gRPC
+      - "4318:4318"    # OTLP HTTP
+      - "16686:16686"  # Jaeger UI

vms-home/docker-29/tracing/jaeger-config.yaml

@@ -0,0 +1,35 @@
+service:
+  extensions: [jaeger_storage, jaeger_query]
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: []
+      exporters: [jaeger_storage_exporter]
+
+extensions:
+  jaeger_storage:
+    backends:
+      badger_store:
+        badger:
+          directories:
+            keys: /badger/key
+            values: /badger/data
+          ephemeral: false
+          ttl:
+            spans: 4h
+          metrics_update_interval: 5m
+  jaeger_query:
+    storage:
+      traces: badger_store
+
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: 0.0.0.0:4317
+      http:
+        endpoint: 0.0.0.0:4318
+
+exporters:
+  jaeger_storage_exporter:
+    trace_storage: badger_store