diff --git a/Fix-rrdcached.service-start-failed-with-selinux_on.patch b/Fix-rrdcached.service-start-failed-with-selinux_on.patch
new file mode 100644
index 0000000..00234f7
--- /dev/null
+++ b/Fix-rrdcached.service-start-failed-with-selinux_on.patch
@@ -0,0 +1,12 @@
+diff --git a/etc/rrdcached.service.in b/etc/rrdcached.service.in
+index 3b6f309..2942a13 100644
+--- a/etc/rrdcached.service.in
++++ b/etc/rrdcached.service.in
+@@ -6,6 +6,7 @@
+ [Unit]
+ Description=Data caching daemon for rrdtool
+ Documentation=man:rrdcached(1)
++Requires=rrdcached.socket
+ 
+ [Service]
+ # If you enable socket-activable rrdcached.socket,
diff --git a/rrdtool.spec b/rrdtool.spec
index 5ec3452..c065e13 100644
--- a/rrdtool.spec
+++ b/rrdtool.spec
@@ -1,6 +1,6 @@
 Name:             rrdtool
 Version:          1.7.0
-Release:          20
+Release:          21
 Summary:          RA tool for data logging and analysis
 License:          GPLv2+ with exceptions
 URL:              http://oss.oetiker.ch/rrdtool/
@@ -9,6 +9,7 @@ Source1:          php4-r1190.tar.gz
 Patch0001:        rrdtool-1.6.0-ruby-2-fix.patch
 Patch0002:        rrdtool-1.4.8-php-ppc-fix.patch
 Patch0003:        rrdtool-1.7.0-fix-configure-parameters.patch
+Patch0004:        Fix-rrdcached.service-start-failed-with-selinux_on.patch
 
 Requires(post):   systemd
 Requires(preun):  systemd
@@ -215,6 +216,9 @@ chrpath -d %{buildroot}/%{python3_sitearch}/*.so
 %{_mandir}/man3/*
 
 %changelog
+* Tue Dec 06 2022 xu_ping <xuping33@h-partners.com> - 1.7.0-21
+- fix rrdcached.service start failed when selinux enforcing.
+
 * Mon Nov 14 2022 yaoxin <yaoxin30@h-partners.com> - 1.7.0-20
 - Modify invalid Source