3 files changed, 99 insertions, 0 deletions

diff --git a/hosts/surtr/matrix/default.nix b/hosts/surtr/matrix/default.nix
index b690ec9a..9c9c3565 100644
--- a/hosts/surtr/matrix/default.nix
+++ b/hosts/surtr/matrix/default.nix
@@ -27,6 +27,16 @@ with lib;
             type = "http";
             x_forwarded = true;
           }
+          { bind_addresses = ["::1" "127.0.0.1"];
+            port = 9092;
+            resources = [
+              { names = [ "metrics" ];
+                compress = false;
+              }
+            ];
+            tls = false;
+            type = "http";
+          }
         ];
 
         tls_certificate_path = "/run/credentials/matrix-synapse.service/synapse.li.pem";
diff --git a/hosts/surtr/prometheus/default.nix b/hosts/surtr/prometheus/default.nix
index e38fdcb2..0f0cf586 100644
--- a/hosts/surtr/prometheus/default.nix
+++ b/hosts/surtr/prometheus/default.nix
@@ -136,6 +136,14 @@ in {
           ];
           scrape_interval = "5s";
         }
+        { job_name = "synapse";
+          metrics_path = "/_synapse/metrics";
+          static_configs = [
+            { targets = ["localhost:9092"]; }
+          ];
+          relabel_configs = relabelHosts;
+          scrape_interval = "5s";
+        }
       ];
 
       rules = [
@@ -144,6 +152,9 @@ in {
           ];
         })
       ];
+      ruleFiles = [
+        ./synapse-v2.rules
+      ];
     };
     users.users.${config.services.prometheus.exporters.unbound.user} = {
       description = "Prometheus unbound exporter service user";
diff --git a/hosts/surtr/prometheus/synapse-v2.rules b/hosts/surtr/prometheus/synapse-v2.rules
new file mode 100644
index 00000000..7e405bf7
--- /dev/null
+++ b/hosts/surtr/prometheus/synapse-v2.rules
@@ -0,0 +1,78 @@
+groups:
+- name: synapse
+  rules:
+  - record: "synapse_federation_transaction_queue_pendingEdus:total"
+    expr: "sum(synapse_federation_transaction_queue_pendingEdus or absent(synapse_federation_transaction_queue_pendingEdus)*0)"
+  - record: "synapse_federation_transaction_queue_pendingPdus:total"
+    expr:   "sum(synapse_federation_transaction_queue_pendingPdus or absent(synapse_federation_transaction_queue_pendingPdus)*0)"
+  - record: 'synapse_http_server_request_count:method'
+    labels:
+      servlet: ""
+    expr: "sum(synapse_http_server_request_count) by (method)"
+  - record: 'synapse_http_server_request_count:servlet'
+    labels:
+      method: ""
+    expr: 'sum(synapse_http_server_request_count) by (servlet)'
+
+  - record: 'synapse_http_server_request_count:total'
+    labels:
+      servlet: ""
+    expr: 'sum(synapse_http_server_request_count:by_method) by (servlet)'
+
+  - record: 'synapse_cache:hit_ratio_5m'
+    expr: 'rate(synapse_util_caches_cache:hits[5m]) / rate(synapse_util_caches_cache:total[5m])'
+  - record: 'synapse_cache:hit_ratio_30s'
+    expr: 'rate(synapse_util_caches_cache:hits[30s]) / rate(synapse_util_caches_cache:total[30s])'
+
+  - record: 'synapse_federation_client_sent'
+    labels:
+      type: "EDU"
+    expr: 'synapse_federation_client_sent_edus + 0'
+  - record: 'synapse_federation_client_sent'
+    labels:
+      type: "PDU"
+    expr: 'synapse_federation_client_sent_pdu_destinations:count + 0'
+  - record: 'synapse_federation_client_sent'
+    labels:
+      type: "Query"
+    expr: 'sum(synapse_federation_client_sent_queries) by (job)'
+
+  - record: 'synapse_federation_server_received'
+    labels:
+      type: "EDU"
+    expr: 'synapse_federation_server_received_edus + 0'
+  - record: 'synapse_federation_server_received'
+    labels:
+      type: "PDU"
+    expr: 'synapse_federation_server_received_pdus + 0'
+  - record: 'synapse_federation_server_received'
+    labels:
+      type: "Query"
+    expr: 'sum(synapse_federation_server_received_queries) by (job)'
+
+  - record: 'synapse_federation_transaction_queue_pending'
+    labels:
+      type: "EDU"
+    expr: 'synapse_federation_transaction_queue_pending_edus + 0'
+  - record: 'synapse_federation_transaction_queue_pending'
+    labels:
+      type: "PDU"
+    expr: 'synapse_federation_transaction_queue_pending_pdus + 0'
+
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep{origin_type="remote"})
+    labels:
+      type: remote
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep{origin_entity="*client*",origin_type="local"})
+    labels:
+      type: local
+  - record: synapse_storage_events_persisted_by_source_type
+    expr: sum without(type, origin_type, origin_entity) (synapse_storage_events_persisted_events_sep{origin_entity!="*client*",origin_type="local"})
+    labels:
+      type: bridges
+  - record: synapse_storage_events_persisted_by_event_type
+    expr: sum without(origin_entity, origin_type) (synapse_storage_events_persisted_events_sep)
+  - record: synapse_storage_events_persisted_by_origin
+    expr: sum without(type) (synapse_storage_events_persisted_events_sep)
+