From 81ab2f1bbbf7c7757bcc39fa2229e8a7eea295cc Mon Sep 17 00:00:00 2001
From: Aravind Mani <53524901+aravindmani-1@users.noreply.github.com>
Date: Wed, 4 Aug 2021 14:32:02 -0700
Subject: [PATCH] Dell S6100: Monitor serial-getty service (#8304)

Why I did it
serial-getty service exited in Dell S6100 device randomly.

How I did it
Added serial-getty to monit services.

How to verify it
Stop serial-getty in ssh session and check whether the service restarts or not.
---
 .../debian/platform-modules-s6100.install                     | 1 +
 .../s6100/scripts/s6100_platform.sh                           | 1 +
 .../s6100/scripts/s6100_serial_getty_monitor                  | 4 ++++
 3 files changed, 6 insertions(+)
 create mode 100644 platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_serial_getty_monitor

diff --git a/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install b/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
index ae73bf82f5..0823b7c86d 100644
--- a/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
+++ b/platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install
@@ -25,5 +25,6 @@ s6100/systemd/platform-modules-s6100.service etc/systemd/system
 s6100/systemd/s6100-lpc-monitor.service etc/systemd/system
 s6100/systemd/s6100-reboot-cause.service etc/systemd/system
 s6100/systemd/s6100-i2c-enumerate.service etc/systemd/system
+s6100/scripts/s6100_serial_getty_monitor etc/monit/conf.d
 common/fw-updater usr/local/bin
 common/onie_mode_set usr/local/bin
diff --git a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
index 62a8c1a281..5c7c2308c1 100755
--- a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
+++ b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh
@@ -52,6 +52,7 @@ if [[ "$1" == "init" ]]; then
     fi
 
     install_python_api_package
+    monit reload
 
 elif [[ "$1" == "deinit" ]]; then
     /usr/local/bin/s6100_i2c_enumeration.sh deinit
diff --git a/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_serial_getty_monitor b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_serial_getty_monitor
new file mode 100644
index 0000000000..1b5d0c90db
--- /dev/null
+++ b/platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_serial_getty_monitor
@@ -0,0 +1,4 @@
+#Dell S6100 serial getty monitor
+check process serial-getty matching "ttyS"
+start program = "/bin/systemctl start serial-getty@ttyS1.service"
+stop program = "/bin/systemctl stop serial-getty@ttyS1.service"