Move loki to zippy.

services/loki.hcl

@@ -10,6 +10,14 @@ job "loki" {
   }
   group "loki" {
     count = 1
+
+    # Run on primary storage node (zippy) for local disk performance
+    # TODO: move to fractal once it's converted to NixOS (spinning disks OK for log data)
+    constraint {
+      attribute = "${meta.storage_role}"
+      value     = "primary"
+    }
+
     restart {
       attempts = 3
       interval = "5m"
@@ -31,7 +39,7 @@ job "loki" {
           "local/loki/local-config.yaml",
         ]
         ports = ["loki"]
-        volumes = ["/data/compute/appdata/loki:/loki"]
+        volumes = ["/data/services/loki:/loki"]
       }
       template {
         data = <<EOH