add plausible analytics (#28)

jobs/services/plausible.hcl

@@ -0,0 +1,125 @@
+job "plausible" {
+  datacenters = ["aperture"]
+  type = "service"
+
+  group "web" {
+    network {
+      port "http" {
+        to = 8000
+      }
+      port "db" {
+        static = 8123
+      }
+    }
+
+    task "plausible" {
+      service {
+        name = "plausible"
+        port = "http"
+
+        check {
+          type = "http"
+          path = "/"
+          interval = "10s"
+          timeout = "2s"
+        }
+
+        tags = [
+          "traefik.enable=true",
+          "traefik.http.routers.plausible.rule=Host(`plausible.redbrick.dcu.ie`)",
+          "traefik.http.routers.plausible.entrypoints=websecure",
+          "traefik.http.routers.plausible.tls.certresolver=lets-encrypt"
+        ]
+      }
+
+      driver = "docker"
+
+      config {
+        image = "plausible/analytics:latest"
+        ports = ["http"]
+
+        command = "/bin/sh"
+        args = ["-c", "sleep 10 && /entrypoint.sh db migrate && /entrypoint.sh run"]
+      }
+
+      template {
+        data = <<EOH
+BASE_URL=https://plausible.redbrick.dcu.ie
+SECRET_KEY_BASE={{ key "plausible/secret" }}
+DATABASE_URL=postgres://{{ key "plausible/db/user" }}:{{ key "plausible/db/password" }}@postgres.service.consul:5432/{{ key "plausible/db/name" }}
+CLICKHOUSE_DATABASE_URL=http://{{ env "NOMAD_ADDR_db" }}/plausible_events_db
+EOH
+        destination = "local/file.env"
+        env = true
+      }
+
+      resources {
+        memory = 500
+      }
+    }
+
+    task "clickhouse" {
+      constraint {
+        attribute = "${attr.unique.hostname}"
+        value     = "chell"
+      }
+
+      service {
+        name = "plausible-clickhouse"
+        port = "db"
+      }
+
+      driver = "docker"
+
+      config {
+        image = "clickhouse/clickhouse-server:23.3.7.5-alpine"
+        ports = ["db"]
+        volumes = [
+          "/opt/plausible/clickhouse:/var/lib/clickhouse",
+          "local/clickhouse.xml:/etc/clickhouse-server/config.d/logging.xml:ro",
+          "local/clickhouse-user-config.xml:/etc/clickhouse-server/users.d/logging.xml:ro"
+        ]
+      }
+
+      template {
+        data = <<EOH
+<clickhouse>
+    <logger>
+        <level>warning</level>
+        <console>true</console>
+    </logger>
+
+    <!-- Stop all the unnecessary logging -->
+    <query_thread_log remove="remove"/>
+    <query_log remove="remove"/>
+    <text_log remove="remove"/>
+    <trace_log remove="remove"/>
+    <metric_log remove="remove"/>
+    <asynchronous_metric_log remove="remove"/>
+    <session_log remove="remove"/>
+    <part_log remove="remove"/>
+</clickhouse>
+EOH
+        destination = "local/clickhouse.xml"
+      }
+
+      template {
+        data = <<EOH
+<clickhouse>
+    <profiles>
+        <default>
+            <log_queries>0</log_queries>
+            <log_query_threads>0</log_query_threads>
+        </default>
+    </profiles>
+</clickhouse>
+EOH
+        destination = "local/clickhouse-user-config.xml"
+      }
+
+      resources {
+        memory = 800
+      }
+    }
+  }
+}