diff --git a/dbms/src/Server/MetricsPrometheus.cpp b/dbms/src/Server/MetricsPrometheus.cpp
index 2a1c1bae42d..c3248632e84 100644
--- a/dbms/src/Server/MetricsPrometheus.cpp
+++ b/dbms/src/Server/MetricsPrometheus.cpp
@@ -59,8 +59,17 @@ std::string getInstanceValue(const Poco::Util::AbstractConfiguration & conf)
         auto service_addr = conf.getString("flash.service_addr");
         if (service_addr.empty())
             return getHostName();
-        // "0.0.0.0", "127.x.x.x", "locallhost", "0:0:0:0:0:0:0:0", "0:0:0:0:0:0:0:1", "::", "::1", ":${port}"
-        static const std::vector<std::string> blacklist{"0.0.0.0", "127.", "locallhost", "0:0:0:0:0:0:0", ":"};
+        // "0.0.0.0", "127.x.x.x", "localhost", "0:0:0:0:0:0:0:0", "0:0:0:0:0:0:0:1", "::", "::1", ":${port}"
+        static const std::vector<std::string> blacklist{
+            // ivp4
+            "0.0.0.0",
+            "127.",
+            "localhost",
+            // ipv6
+            "0:0:0:0:0:0:0",
+            "[0:0:0:0:0:0:0",
+            ":",
+            "[:"};
         for (const auto & prefix : blacklist)
         {
             if (startsWith(service_addr, prefix))
diff --git a/etc/config-template.toml b/etc/config-template.toml
index 0c89597c5bf..ad13fca53d0 100644
--- a/etc/config-template.toml
+++ b/etc/config-template.toml
@@ -122,6 +122,10 @@
 # advertise-status-addr = "tiflash0:20292"
 # engine-addr = "tiflash0:3930"
 
+# [cluster]
+# Used to specify which cluster the tiflash compute node belongs to.
+# cluster_id = "${cluster_id}"
+
 [logger]
 # log = "/tmp/tiflash/log/server.log"
 # level = "debug"