diff --git a/modules/cockroachdb/cockroachdb.go b/modules/cockroachdb/cockroachdb.go
index 3460e32765..6f718b3493 100644
--- a/modules/cockroachdb/cockroachdb.go
+++ b/modules/cockroachdb/cockroachdb.go
@@ -53,12 +53,8 @@ const (
 	envDatabase = "COCKROACH_DATABASE"
 
 	// cert files.
-	certsDir       = cockroachDir + "/certs"
-	fileCACert     = certsDir + "/ca.crt"
-	fileNodeCert   = certsDir + "/node.crt"
-	fileNodeKey    = certsDir + "/node.key"
-	fileClientCert = certsDir + "/client.root.crt"
-	fileClientKey  = certsDir + "/client.root.key"
+	certsDir   = cockroachDir + "/certs"
+	fileCACert = certsDir + "/ca.crt"
 )
 
 //go:embed data/cluster_defaults.sql
diff --git a/modules/cockroachdb/data/cluster_defaults.sql b/modules/cockroachdb/data/cluster_defaults.sql
new file mode 100644
index 0000000000..78502d115e
--- /dev/null
+++ b/modules/cockroachdb/data/cluster_defaults.sql
@@ -0,0 +1,8 @@
+SET CLUSTER SETTING kv.range_merge.queue_interval = '50ms';
+SET CLUSTER SETTING jobs.registry.interval.gc = '30s';
+SET CLUSTER SETTING jobs.registry.interval.cancel = '180s';
+SET CLUSTER SETTING jobs.retention_time = '15s';
+SET CLUSTER SETTING sql.stats.automatic_collection.enabled = false;
+SET CLUSTER SETTING kv.range_split.by_load_merge_delay = '5s';
+ALTER RANGE default CONFIGURE ZONE USING "gc.ttlseconds" = 600;
+ALTER DATABASE system CONFIGURE ZONE USING "gc.ttlseconds" = 600;
diff --git a/modules/cockroachdb/testdata/__init.sql b/modules/cockroachdb/testdata/__init.sql
new file mode 100644
index 0000000000..c2c82dd48a
--- /dev/null
+++ b/modules/cockroachdb/testdata/__init.sql
@@ -0,0 +1 @@
+SET CLUSTER SETTING jobs.registry.interval.gc = '50s';