[mux]: Call write_standby from host only

Signed-off-by: Lawrence Lee <lawlee@microsoft.com>

dockers/docker-mux/supervisord.conf

@@ -27,15 +27,6 @@ stdout_logfile=syslog
 stderr_logfile=syslog
 dependent_startup=true
 
-[program:standby_init]
-command=/opt/write_standby/bin/write_standby.py
-priority=2
-autostart=false
-autorestart=false
-startsecs=0
-dependent_startup=true
-dependent_startup_wait_for=rsyslogd:running
-
 [program:linkmgrd]
 command=nice -n -20 /usr/sbin/linkmgrd -v warning
 priority=2

files/build_templates/docker_image_ctl.j2

@@ -428,9 +428,6 @@ start() {
         -v /var/run/redis-chassis:/var/run/redis-chassis:ro \
         -v /usr/share/sonic/device/$PLATFORM/$HWSKU/$DEV:/usr/share/sonic/hwsku:ro \
 {%- endif %}
-{%- if docker_container_name == "mux" -%}
-        -v /opt/write_standby/bin:/opt/write_standby/bin:ro \
-{%- endif -%}
         $REDIS_MNT \
         -v /usr/share/sonic/device/$PLATFORM:/usr/share/sonic/platform:ro \
 {%- if sonic_asic_platform != "mellanox" %}

files/build_templates/mux.service.j2

@@ -9,10 +9,11 @@ StartLimitBurst=3
 
 [Service]
 User={{ sonicadmin_user }}
+ExecStartPre=/usr/local/bin/write_standby.py
 ExecStartPre=/usr/bin/{{docker_container_name}}.sh start
 ExecStart=/usr/bin/{{docker_container_name}}.sh wait
 ExecStop=/usr/bin/{{docker_container_name}}.sh stop
-ExecStopPost=/opt/write_standby/bin/write_standby.py
+ExecStopPost=/usr/local/bin/write_standby.py
 Restart=always
 RestartSec=30
 

files/build_templates/sonic_debian_extension.j2

@@ -53,7 +53,6 @@ FILESYSTEM_ROOT_USR_SHARE_SONIC_TEMPLATES="$FILESYSTEM_ROOT_USR_SHARE_SONIC/temp
 FILESYSTEM_ROOT_USR_SHARE_SONIC_FIRMWARE="$FILESYSTEM_ROOT_USR_SHARE_SONIC/firmware"
 FILESYSTEM_ROOT_ETC="$FILESYSTEM_ROOT/etc"
 FILESYSTEM_ROOT_ETC_SONIC="$FILESYSTEM_ROOT_ETC/sonic"
-FILESYSTEM_ROOT_OPT="$FILESYSTEM_ROOT/opt"
 
 GENERATED_SERVICE_FILE="$FILESYSTEM_ROOT/etc/sonic/generated_services.conf"
 
@@ -815,8 +814,7 @@ sudo LANG=C cp $SCRIPTS_DIR/asic_status.py $FILESYSTEM_ROOT/usr/local/bin/asic_s
 sudo LANG=C cp $SCRIPTS_DIR/sonic-netns-exec $FILESYSTEM_ROOT/usr/bin/sonic-netns-exec
 
 # Copy write_standby script for mux state
-sudo LANG=C mkdir -p $FILESYSTEM_ROOT_OPT/write_standby/bin/
-sudo LANG=C cp $SCRIPTS_DIR/write_standby.py $FILESYSTEM_ROOT_OPT/write_standby/bin/write_standby.py
+sudo LANG=C cp $SCRIPTS_DIR/write_standby.py $FILESYSTEM_ROOT/usr/local/bin/write_standby.py
 
 # Copy systemd timer configuration
 # It implements delayed start of services