diff --git a/README.md b/README.md
index 7b1dd2ec1..da76c363a 100755
--- a/README.md
+++ b/README.md
@@ -160,6 +160,7 @@ For previous versions, please read:
 
 ## V3 changes
 
+* v3.0, 2020-02-18, For [#1579][bug #1579], support force gracefully quit. 3.0.120
 * v3.0, 2020-02-18, For [#1579][bug #1579], support gracefully quit. 3.0.119
 * v3.0, 2020-02-17, For [#1601][bug #1601], flush async on_dvr/on_hls events before stop. 3.0.118
 * <strong>v3.0, 2020-02-14, [3.0 beta1(3.0.117)][r3.0b1] released. 121964 lines.</strong>
diff --git a/trunk/conf/full.conf b/trunk/conf/full.conf
index ae24f377e..02842b280 100644
--- a/trunk/conf/full.conf
+++ b/trunk/conf/full.conf
@@ -73,9 +73,16 @@ work_dir ./;
 # default: off
 asprocess off;
 
-# for gracefully quit, final wait for cleanup in milliseconds.
+# For gracefully quit, final wait for cleanup in milliseconds.
+# @see https://github.com/ossrs/srs/issues/1579#issuecomment-587414898
 # default: 3200
 grace_final_wait 3200;
+# Whether force gracefully quit, never fast quit.
+# By default, SIGTERM which means fast quit, is sent by K8S, so we need to
+# force SRS to treat SIGTERM as gracefully quit for gray release or canary.
+# @see https://github.com/ossrs/srs/issues/1579#issuecomment-587475077
+# default: off
+force_grace_quit off;
 
 #############################################################################################
 # heartbeat/stats sections
diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 94b77b513..10c7e7741 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -3488,7 +3488,7 @@ srs_error_t SrsConfig::check_normal_config()
             && n != "http_api" && n != "stats" && n != "vhost" && n != "pithy_print_ms"
             && n != "http_server" && n != "stream_caster" && n != "srt_server"
             && n != "utc_time" && n != "work_dir" && n != "asprocess"
-            && n != "ff_log_level" && n != "grace_final_wait"
+            && n != "ff_log_level" && n != "grace_final_wait" && n != "force_grace_quit"
             ) {
             return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "illegal directive %s", n.c_str());
         }
@@ -4076,6 +4076,18 @@ srs_utime_t SrsConfig::get_grace_final_wait()
     return (srs_utime_t)(::atol(conf->arg0().c_str()) * SRS_UTIME_MILLISECONDS);
 }
 
+bool SrsConfig::is_force_grace_quit()
+{
+    static bool DEFAULT = false;
+
+    SrsConfDirective* conf = root->get("force_grace_quit");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
+    }
+
+    return SRS_CONF_PERFER_FALSE(conf->arg0());
+}
+
 vector<SrsConfDirective*> SrsConfig::get_stream_casters()
 {
     srs_assert(root);
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index 83889aba4..b3ce93f2c 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -470,6 +470,8 @@ public:
     virtual bool get_asprocess();
     // Get the final wait in ms for gracefully quit.
     virtual srs_utime_t get_grace_final_wait();
+    // Whether force to gracefully quit, never fast quit.
+    virtual bool is_force_grace_quit();
 // stream_caster section
 public:
     // Get all stream_caster in config file.
diff --git a/trunk/src/app/srs_app_server.cpp b/trunk/src/app/srs_app_server.cpp
index 9ea4a25c4..88e2e6725 100644
--- a/trunk/src/app/srs_app_server.cpp
+++ b/trunk/src/app/srs_app_server.cpp
@@ -915,7 +915,14 @@ void SrsServer::on_signal(int signo)
         #endif
 #endif
     }
-    
+
+    // For K8S, force to gracefully quit for gray release or canary.
+    // @see https://github.com/ossrs/srs/issues/1595#issuecomment-587473037
+    if (signo == SRS_SIGNAL_FAST_QUIT && _srs_config->is_force_grace_quit()) {
+        srs_trace("force gracefully quit, signo=%d", signo);
+        signo = SRS_SIGNAL_GRACEFULLY_QUIT;
+    }
+
     if ((signo == SIGINT || signo == SRS_SIGNAL_FAST_QUIT) && !signal_fast_quit) {
         srs_trace("sig=%d, user terminate program, fast quit", signo);
         signal_fast_quit = true;
diff --git a/trunk/src/core/srs_core_version3.hpp b/trunk/src/core/srs_core_version3.hpp
index c27634123..4e9f290ae 100644
--- a/trunk/src/core/srs_core_version3.hpp
+++ b/trunk/src/core/srs_core_version3.hpp
@@ -24,6 +24,6 @@
 #ifndef SRS_CORE_VERSION3_HPP
 #define SRS_CORE_VERSION3_HPP
 
-#define SRS_VERSION3_REVISION 119
+#define SRS_VERSION3_REVISION 120
 
 #endif