diff --git a/roles/tidb_lightning/templates/tidb-lightning.toml.j2 b/roles/tidb_lightning/templates/tidb-lightning.toml.j2
index 1671367a9..f00038425 100644
--- a/roles/tidb_lightning/templates/tidb-lightning.toml.j2
+++ b/roles/tidb_lightning/templates/tidb-lightning.toml.j2
@@ -1,12 +1,10 @@
 # lightning Configuration
 
 {% set all_pd = [] -%}
-{% set pd_hosts = groups.pd_servers %}
-{% for host in pd_hosts -%}
-  {% set pd_ip = hostvars[host].ansible_host | default(hostvars[host].inventory_hostname) -%}
-  {% set pd_port = hostvars[host].pd_client_port -%}
-  {% set _ = all_pd.append("%s:%s" % (pd_ip, pd_port)) -%}
-{% endfor -%}
+{% set pd_host = groups.pd_servers[0] -%}
+{% set pd_ip = hostvars[pd_host].ansible_host | default(hostvars[pd_host].inventory_hostname) -%}
+{% set pd_port = hostvars[pd_host].pd_client_port -%}
+{% set _ = all_pd.append("%s:%s" % (pd_ip, pd_port)) -%}
 
 [lightning]
 {% for item, value in tidb_lightning_conf.lightning | dictsort -%}