feat(logging): add loki server job

Signed-off-by: Bruce Becker <[email protected]>

loki.hcl.tpl

@@ -0,0 +1,46 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+
+common:
+  path_prefix: /tmp/loki
+  storage:
+    filesystem:
+      chunks_directory: /tmp/loki/chunks
+      rules_directory: /tmp/loki/rules
+  replication_factor: 1
+  ring:
+    instance_addr: 127.0.0.1
+    kvstore:
+      store: consul
+      consul:
+        host: localhost:8500
+
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: boltdb-shipper
+      object_store: filesystem
+      schema: v11
+      index:
+        prefix: index_
+        period: 24h
+
+ruler:
+  alertmanager_url: http://localhost:9093
+
+# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
+# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
+#
+# Statistics help us better understand how Loki is used, and they show us performance
+# levels for most users. This helps us prioritize features and documentation.
+# For more information on what's sent, look at
+# https://github.com/grafana/loki/blob/main/pkg/usagestats/stats.go
+# Refer to the buildReport method to see what goes into a report.
+#
+# If you would like to disable reporting, uncomment the following lines:
+#analytics:
+#  reporting_enabled: false

loki.nomad

@@ -0,0 +1,72 @@
+variable "loki_version" {
+  type = string
+  default = "v2.5.0"
+  description = "Loki release to deploy. See https://github.com/grafana/loki/releases/"
+}
+job "loki" {
+  datacenters = ["dc1"]
+  type = "service"
+  name = "loki"
+  // migrate {}
+  priority = 80
+  group "log-server" {
+    network {
+      port "loki_http_listen" {
+        static = 3100
+      }
+      port "loki_grpc_listen" {
+        static = 9096
+      }
+      port "promtail_http_listen" {
+        static = 9080
+      }
+      port "promtail_grpc_listen" {
+        static = 0
+      }
+    }
+    service {
+      name = "loki-http-server"
+      tags = ["logs", "loki", "observability"]
+      port = "loki_http_listen"
+
+      check {
+        name = "loki_http_alive"
+        type = "tcp"
+        interval = "10s"
+        timeout = "3s"
+      }
+    }
+    task "server" {
+      driver = "raw_exec"
+      config {
+        command = "loki"
+        args = [
+          "-config.file=local/loki.yml"
+        ]
+      }
+      template {
+        source = "local/loki.yml.tpl"
+        destination = "local/loki.yml"
+      }
+      // artifact {
+      //   source = "https://github.com/grafana/loki/releases/download/${var.loki_version}/loki-linux-${attr.cpu.arch}.zip"
+      //   options { # checksum depends on the cpu arch
+      //   }
+      //   destination = "local/loki"
+      //   mode = "file"
+      // }
+      artifact {
+        source = "http://minio-deploy-run.service.consul:9000/loki-bin/loki-linux-${attr.cpu.arch}.zip"
+        destination = "local/loki"
+        mode = "file"
+      }
+      artifact {
+        source = "http://minio-deploy-run.service.consul:9000/loki-config/loki.hcl.tpl"
+        destination = "local/loki.yml.tpl"
+        mode = "file"
+      }
+
+    }
+
+  }
+}