northd: Don't monitor most of northbound external IDs.

ovn-northd copies external IDs from Logical Switch, Router and their Port records to corresponding Southbound Datapath and Port Binding records. IDs in other tables are not used by northd in any way, so there is no point in monitoring them. CMSes tend to create a huge amount of external IDs for every record to the point where they can take literally half of the database data. In high scale clusters that can be several hundreds of MB. Not monitoring them saves a lot of time while downloading initial database snapshots on the first connection and should also reduce the ongoing traffic while new resources are being created. Signed-off-by: Ilya Maximets <[email protected]>
igsilya · Sep 17, 2024 · ded8cce · ded8cce
1 parent 2bdf112
commit ded8cce
Showing 1 changed file with 36 additions and 0 deletions.
diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
@@ -820,6 +820,42 @@ main(int argc, char *argv[])
     ovsdb_idl_omit_alert(ovnnb_idl_loop.idl,
                          &nbrec_nb_global_col_hv_cfg_timestamp);
 
+    /* Ignore northbound external IDs, except for logical switch, router and
+     * their ports, for which the external IDs are propagted to corrsponding
+     * southbound datapath and port binding records. */
+    const struct ovsdb_idl_column *external_ids[] = {
+        &nbrec_acl_col_external_ids,
+        &nbrec_address_set_col_external_ids,
+        &nbrec_bfd_col_external_ids,
+        &nbrec_chassis_template_var_col_external_ids,
+        &nbrec_connection_col_external_ids,
+        &nbrec_copp_col_external_ids,
+        &nbrec_dhcp_options_col_external_ids,
+        &nbrec_dhcp_relay_col_external_ids,
+        &nbrec_dns_col_external_ids,
+        &nbrec_forwarding_group_col_external_ids,
+        &nbrec_gateway_chassis_col_external_ids,
+        &nbrec_ha_chassis_col_external_ids,
+        &nbrec_ha_chassis_group_col_external_ids,
+        &nbrec_load_balancer_col_external_ids,
+        &nbrec_load_balancer_health_check_col_external_ids,
+        &nbrec_logical_router_policy_col_external_ids,
+        &nbrec_logical_router_static_route_col_external_ids,
+        &nbrec_meter_col_external_ids,
+        &nbrec_meter_band_col_external_ids,
+        &nbrec_mirror_col_external_ids,
+        &nbrec_nat_col_external_ids,
+        &nbrec_nb_global_col_external_ids,
+        &nbrec_port_group_col_external_ids,
+        &nbrec_qos_col_external_ids,
+        &nbrec_ssl_col_external_ids,
+        &nbrec_sample_collector_col_external_ids,
+        &nbrec_sampling_app_col_external_ids,
+    };
+    for (size_t i = 0; i < ARRAY_SIZE(external_ids); i++) {
+        ovsdb_idl_omit_alert(ovnnb_idl_loop.idl, external_ids[i]);
+    }
+
     unixctl_command_register("nb-connection-status", "", 0, 0,
                              ovn_conn_show, ovnnb_idl_loop.idl);