sonic-buildimage/rules/docker-dhcp-relay.mk
Yaqiang Zhu da80593ecb
[dhcp_relay] Use dhcprelayd to manage critical processes (#17236)
Modify j2 template files in docker-dhcp-relay. Add dhcprelayd to group dhcp-relay instead of isc-dhcp-relay-VlanXXX, which would make dhcprelayd to become critical process.
In dhcprelayd, subscribe FEATURE table to check whether dhcp_server feature is enabled.
2.1 If dhcp_server feature is disabled, means we need original dhcp_relay functionality, dhcprelayd would do nothing. Because dhcrelay/dhcpmon configuration is generated in supervisord configuration, they will automatically run.
2.2 If dhcp_server feature is enabled, dhcprelayd will stop dhcpmon/dhcrelay processes started by supervisord and subscribe dhcp_server related tables in config_db to start dhcpmon/dhcrelay processes.
2.3 While dhcprelayd running, it will regularly check feature status (by default per 5s) and would encounter below 4 state change about dhcp_server feature:
A) disabled -> enabled
In this scenario, dhcprelayd will subscribe dhcp_server related tables and stop dhcpmon/dhcrelay processes started by supervisord and start new pair of dhcpmon/dhcrelay processes. After this, dhcpmon/dhcrelay processes are totally managed by dhcprelayd.
B) enabled -> enabled
In this scenaro, dhcprelayd will monitor db changes in dhcp_server related tables to determine whether to restart dhcpmon/dhrelay processes.
C) enabled -> disabled
In this scenario, dhcprelayd would unsubscribe dhcp_server related tables and kill dhcpmon/dhcrelay processes started by itself. And then dhcprelayd will start dhcpmon/dhcrelay processes via supervisorctl.
D) disabled -> disabled
dhcprelayd will check whether dhcrelay processes running status consistent with supervisord configuration file. If they are not consistent, dhcprelayd will kill itself, then dhcp_relay container will stop because dhcprelayd is critical process.
2023-11-27 09:30:01 -08:00

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2.4 KiB
Makefile

# Docker image for DHCP relay
DOCKER_DHCP_RELAY_STEM = docker-dhcp-relay
DOCKER_DHCP_RELAY = $(DOCKER_DHCP_RELAY_STEM).gz
DOCKER_DHCP_RELAY_DBG = $(DOCKER_DHCP_RELAY_STEM)-$(DBG_IMAGE_MARK).gz
$(DOCKER_DHCP_RELAY)_PATH = $(DOCKERS_PATH)/$(DOCKER_DHCP_RELAY_STEM)
$(DOCKER_DHCP_RELAY)_DEPENDS += $(ISC_DHCP_RELAY) $(SONIC_DHCPMON) $(SONIC_DHCPRELAY) $(LIBSWSSCOMMON) $(SONIC_RSYSLOG_PLUGIN)
$(DOCKER_DHCP_RELAY)_DBG_DEPENDS = $($(DOCKER_CONFIG_ENGINE_BULLSEYE)_DBG_DEPENDS)
$(DOCKER_DHCP_RELAY)_DBG_DEPENDS += $(ISC_DHCP_RELAY_DBG) $(SONIC_DHCPRELAY_DBG) $(SONIC_DHCPMON_DBG) $(SONIC_RSYSLOG_PLUGIN)
$(DOCKER_DHCP_RELAY)_DBG_IMAGE_PACKAGES = $($(DOCKER_CONFIG_ENGINE_BULLSEYE)_DBG_IMAGE_PACKAGES)
$(DOCKER_DHCP_RELAY)_LOAD_DOCKERS = $(DOCKER_CONFIG_ENGINE_BULLSEYE)
$(DOCKER_DHCP_RELAY)_INSTALL_PYTHON_WHEELS = $(SONIC_UTILITIES_PY3)
$(DOCKER_DHCP_RELAY)_INSTALL_DEBS = $(PYTHON3_SWSSCOMMON)
$(DOCKER_DHCP_RELAY)_PYTHON_WHEELS += $(SONIC_DHCP_SERVER_PY3)
$(DOCKER_DHCP_RELAY)_VERSION = 1.0.0
$(DOCKER_DHCP_RELAY)_PACKAGE_NAME = dhcp-relay
$(DOCKER_DHCP_RELAY)_PACKAGE_DEPENDS = database^1.0.0
$(DOCKER_DHCP_RELAY)_SERVICE_REQUIRES = updategraph
$(DOCKER_DHCP_RELAY)_SERVICE_AFTER = swss syncd teamd
$(DOCKER_DHCP_RELAY)_SERVICE_BEFORE = ntp-config
$(DOCKER_DHCP_RELAY)_SERVICE_DEPENDENT_OF = swss
SONIC_DOCKER_IMAGES += $(DOCKER_DHCP_RELAY)
SONIC_BULLSEYE_DOCKERS += $(DOCKER_DHCP_RELAY)
SONIC_DOCKER_DBG_IMAGES += $(DOCKER_DHCP_RELAY_DBG)
SONIC_BULLSEYE_DBG_DOCKERS += $(DOCKER_DHCP_RELAY_DBG)
ifeq ($(INCLUDE_KUBERNETES),y)
$(DOCKER_DHCP_RELAY)_DEFAULT_FEATURE_OWNER = kube
endif
$(DOCKER_DHCP_RELAY)_DEFAULT_FEATURE_STATE_ENABLED = y
ifeq ($(INCLUDE_DHCP_RELAY),y)
ifeq ($(INSTALL_DEBUG_TOOLS),y)
SONIC_PACKAGES_LOCAL += $(DOCKER_DHCP_RELAY_DBG)
else
SONIC_PACKAGES_LOCAL += $(DOCKER_DHCP_RELAY)
endif
endif
$(DOCKER_DHCP_RELAY)_CONTAINER_NAME = dhcp_relay
$(DOCKER_DHCP_RELAY)_CONTAINER_PRIVILEGED = false
$(DOCKER_DHCP_RELAY)_CONTAINER_VOLUMES += /etc/sonic:/etc/sonic:ro
$(DOCKER_DHCP_RELAY)_CONTAINER_VOLUMES += /etc/timezone:/etc/timezone:ro
$(DOCKER_DHCP_RELAY)_CONTAINER_TMPFS += /tmp/
$(DOCKER_DHCP_RELAY)_CONTAINER_TMPFS += /var/tmp/
$(DOCKER_DHCP_RELAY)_CLI_CONFIG_PLUGIN = /cli/config/plugins/dhcp_relay.py
$(DOCKER_DHCP_RELAY)_CLI_SHOW_PLUGIN = /cli/show/plugins/show_dhcp_relay.py
$(DOCKER_DHCP_RELAY)_CLI_CLEAR_PLUGIN = /cli/clear/plugins/clear_dhcp6relay_counter.py
$(DOCKER_DHCP_RELAY)_FILES += $(SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT)