sonic-buildimage/files/build_templates/docker_image_ctl.j2

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#!/bin/bash
# single instance containers are still supported (even though it might not look like it)
# if no instance number is passed to this script, $DEV will simply be unset, resulting in docker
# commands being sent to the base container name. E.g. `docker start database$DEV` simply starts
# the container `database` if no instance number is passed since `$DEV` is not defined
{%- if docker_container_name == "database" %}
link_namespace() {
# Makes namespace of a docker container available in
# /var/run/netns so it can be managed with iproute2
mkdir -p /var/run/netns
PID="$(docker inspect -f {{"'{{.State.Pid}}'"}} "{{docker_container_name}}$DEV")"
PIDS=`ip netns pids "$NET_NS" 2>/dev/null`
if [ "$?" -eq "0" ]; then # namespace exists
if `echo $PIDS | grep --quiet -w $PID`; then # namespace is correctly linked
return 0
else # if it's incorrectly linked remove it
ip netns delete $NET_NS
fi
fi
ln -s /proc/$PID/ns/net /var/run/netns/$NET_NS
}
{%- endif %}
function getMountPoint()
{
echo $1 | python -c "import sys, json, os; mnts = [x for x in json.load(sys.stdin)[0]['Mounts'] if x['Destination'] == '/usr/share/sonic/hwsku']; print '' if len(mnts) == 0 else os.path.basename(mnts[0]['Source'])" 2>/dev/null
}
function getBootType()
{
# same code snippet in files/scripts/syncd.sh
case "$(cat /proc/cmdline)" in
*SONIC_BOOT_TYPE=warm*)
TYPE='warm'
;;
*SONIC_BOOT_TYPE=fastfast*)
TYPE='fastfast'
;;
*SONIC_BOOT_TYPE=fast*|*fast-reboot*)
TYPE='fast'
;;
*)
TYPE='cold'
esac
echo "${TYPE}"
}
function preStartAction()
{
{%- if docker_container_name == "database" %}
WARM_DIR=/host/warmboot
if [[ ("$BOOT_TYPE" == "warm" || "$BOOT_TYPE" == "fastfast") && -f $WARM_DIR/dump.rdb ]]; then
# Load redis content from /host/warmboot/dump.rdb
docker cp $WARM_DIR/dump.rdb database$DEV:/var/lib/redis/dump.rdb
else
# Create an emtpy file and overwrite any RDB if already there
echo -n > /tmp/dump.rdb
docker cp /tmp/dump.rdb database$DEV:/var/lib/redis/
fi
{%- elif docker_container_name == "snmp" %}
sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB HSET 'DEVICE_METADATA|localhost' chassis_serial_number $(decode-syseeprom -s)
{%- else %}
: # nothing
{%- endif %}
}
function postStartAction()
{
{%- if docker_container_name == "database" %}
if [ "$DEV" ]; then
docker exec -i database$DEV sysctl -w net.ipv6.conf.all.disable_ipv6=0
link_namespace $DEV
fi
# Wait until redis starts
/usr/bin/docker exec database$DEV ping_pong_db_insts
if [[ ("$BOOT_TYPE" == "warm" || "$BOOT_TYPE" == "fastfast") && -f $WARM_DIR/dump.rdb ]]; then
rm -f $WARM_DIR/dump.rdb
else
# If there is a config_db.json dump file, load it.
if [ -r /etc/sonic/config_db$DEV.json ]; then
if [ -r /etc/sonic/init_cfg.json ]; then
sonic-netns-exec "$NET_NS" sonic-cfggen -j /etc/sonic/init_cfg.json -j /etc/sonic/config_db$DEV.json --write-to-db
else
sonic-netns-exec "$NET_NS" sonic-cfggen -j /etc/sonic/config_db$DEV.json --write-to-db
fi
fi
if [[ "$BOOT_TYPE" == "fast" ]]; then
# set the key to expire in 3 minutes
/usr/bin/sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB SET "FAST_REBOOT|system" "1" "EX" "180"
fi
/usr/bin/sonic-netns-exec "$NET_NS" sonic-db-cli CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"
fi
if [[ -x /usr/bin/db_migrator.py ]]; then
# Migrate the DB to the latest schema version if needed
/usr/bin/db_migrator.py -o migrate
fi
{%- elif docker_container_name == "swss" %}
docker exec swss$DEV rm -f /ready # remove cruft
if [[ "$BOOT_TYPE" == "fast" ]] && [[ -d /host/fast-reboot ]]; then
test -e /host/fast-reboot/fdb.json && docker cp /host/fast-reboot/fdb.json swss$DEV:/
test -e /host/fast-reboot/arp.json && docker cp /host/fast-reboot/arp.json swss$DEV:/
test -e /host/fast-reboot/default_routes.json && docker cp /host/fast-reboot/default_routes.json swss$DEV:/
rm -fr /host/fast-reboot
fi
docker exec swss$DEV touch /ready # signal swssconfig.sh to go
{%- elif docker_container_name == "pmon" %}
DEVPATH="/usr/share/sonic/device"
REBOOT="platform_reboot"
PSENSOR="/usr/local/bin/platform_sensors.py"
if [ -d ${DEVPATH}/${PLATFORM} ] && [ -f $PSENSOR ]; then
exist=`docker exec -i pmon ls /usr/bin/platform_sensors.py "$@" 2>/dev/null`
if [ -z "$exist" ]; then
docker cp $PSENSOR pmon:/usr/bin/
fi
fi
{%- else %}
: # nothing
{%- endif %}
}
start() {
# Obtain boot type from kernel arguments
BOOT_TYPE=`getBootType`
# Obtain our platform as we will mount directories with these names in each docker
PLATFORM=`sonic-netns-exec "$NET_NS" sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
{%- if docker_container_name == "database" %}
# Don't mount HWSKU in {{docker_container_name}} container.
HWSKU=""
{%- else %}
# Obtain our HWSKU as we will mount directories with these names in each docker
HWSKU=`sonic-netns-exec "$NET_NS" sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
{%- endif %}
DOCKERCHECK=`docker inspect --type container {{docker_container_name}}$DEV 2>/dev/null`
if [ "$?" -eq "0" ]; then
{%- if docker_container_name == "database" %}
DOCKERMOUNT=""
{%- else %}
DOCKERMOUNT=`getMountPoint "$DOCKERCHECK"`
{%- endif %}
if [ x"$DOCKERMOUNT" == x"$HWSKU" ]; then
{%- if docker_container_name == "database" %}
echo "Starting existing {{docker_container_name}}$DEV container"
{%- else %}
echo "Starting existing {{docker_container_name}}$DEV container with HWSKU $HWSKU"
{%- endif %}
preStartAction
docker start {{docker_container_name}}$DEV
postStartAction
exit $?
fi
# docker created with a different HWSKU, remove and recreate
echo "Removing obsolete {{docker_container_name}}$DEV container with HWSKU $DOCKERMOUNT"
docker rm -f {{docker_container_name}}$DEV
fi
{%- if docker_container_name == "database" %}
echo "Creating new {{docker_container_name}}$DEV container"
create multiple Redis DB instances based on CONFIG at /etc/sonic/database_config.json (#2182) this is the first step to moving different databases tables into different database instances in this PR, only handle multiple database instances creation based on user configuration at /etc/sonic/database_config.json we keep current method to create single database instance if no extra/new DATABASE configuration exist in database_config.json file. if user try to configure more db instances at database_config.json , we create those new db instances along with the original db instance existing today. The configuration is as below, later we can add more db related information if needed: { ... "DATABASE": { "redis-db-01" : { "port" : "6380", "database": ["APPL_DB", "STATE_DB"] }, "redis-db-02" : { "port" : "6381", "database":["ASIC_DB"] }, } ... } The detail description is at design doc at Azure/SONiC#271 The main idea is : when database.sh started, we check the configuration and generate corresponding scripts. rc.local service handle old_config copy when loading new images, there is no dependency between rc.local and database service today, for safety and make sure the copy operation are done before database try to read it, we make database service run after rc.local Then database docker started, we check the configuration and generate corresponding scripts/.conf in database docker as well. based on those conf, we create databases instances as required. at last, we ping_pong check database are up and continue 
Signed-off-by: Dong Zhang d.zhang@alibaba-inc.com
2019-08-28 13:15:10 -05:00
# if database_config exists in old_config, use it; otherwise use the default one in new image
if [ -f /etc/sonic/old_config/database_config.json ]; then
echo "Use database_config.json from old system..."
mv /etc/sonic/old_config/database_config.json /etc/sonic/
fi
{%- else %}
echo "Creating new {{docker_container_name}}$DEV container with HWSKU $HWSKU"
{%- endif %}
if [ -z "$DEV" ]; then
NET="host"
else
{%- if docker_container_name == "database" %}
NET="bridge"
{%- else %}
NET="container:database$DEV"
{%- endif %}
fi
{%- if docker_container_name == "bgp" %}
if [ "$DEV" ]; then
if [ ! -d "/etc/sonic/frr/$DEV" ]; then
mkdir /etc/sonic/frr/$DEV
cp -r /etc/sonic/frr/*.conf /etc/sonic/frr/$DEV
fi
fi
{%- endif %}
{%- if sonic_asic_platform == "mellanox" %}
# TODO: Mellanox will remove the --tmpfs exception after SDK socket path changed in new SDK version
{%- endif %}
docker create {{docker_image_run_opt}} \
--net=$NET \
--uts=host \{# W/A: this should be set per-docker, for those dockers which really need host's UTS namespace #}
{%- if install_debug_image == "y" %}
-v /src:/src:ro -v /debug:/debug:rw \
{%- endif %}
{%- if '--log-driver=json-file' in docker_image_run_opt or '--log-driver' not in docker_image_run_opt %}
--log-opt max-size=2M --log-opt max-file=5 \
{%- endif %}
{%- if sonic_asic_platform == "mellanox" %}
{%- if docker_container_name == "syncd" %}
-v /var/log/mellanox/sniffer:/var/log/mellanox/sniffer:rw \
-v mlnx_sdk_socket:/var/run/sx_sdk \
-v mlnx_sdk_ready:/tmp \
-v /dev/shm:/dev/shm:rw \
-e SX_API_SOCKET_FILE=/var/run/sx_sdk/sx_api.sock \
{%- elif docker_container_name == "pmon" %}
-v /var/run/hw-management:/var/run/hw-management:rw \
-v mlnx_sdk_socket:/var/run/sx_sdk \
-v mlnx_sdk_ready:/tmp \
-e SX_API_SOCKET_FILE=/var/run/sx_sdk/sx_api.sock \
-v /dev/shm:/dev/shm:rw \
{%- else %}
--tmpfs /tmp \
{%- endif %}
{%- endif %}
{%- if docker_container_name == "bgp" %}
-v /etc/sonic/frr/$DEV:/etc/frr:rw \
{%- endif %}
-v /var/run/redis$DEV:/var/run/redis:rw \
-v /usr/share/sonic/device/$PLATFORM:/usr/share/sonic/platform:ro \
{%- if docker_container_name != "database" %}
-v /usr/share/sonic/device/$PLATFORM/$HWSKU/$DEV:/usr/share/sonic/hwsku:ro \
{%- endif %}
{%- if sonic_asic_platform != "mellanox" %}
--tmpfs /tmp \
{%- endif %}
--tmpfs /var/tmp \
--name={{docker_container_name}}$DEV {{docker_image_name}}:latest || {
echo "Failed to docker run" >&1
exit 4
}
preStartAction
docker start {{docker_container_name}}$DEV
postStartAction
}
wait() {
docker wait {{docker_container_name}}$DEV
}
stop() {
docker stop {{docker_container_name}}$DEV
{%- if docker_container_name == "database" %}
if [ "$DEV" ]; then
ip netns delete "$NET_NS"
fi
{%- endif %}
}
OP=$1
DEV=$2 # namespace/device number to operate on
if [ "$DEV" ]; then
NET_NS="asic$DEV" #name of the network namespace
else
NET_NS=""
fi
case "$1" in
start|wait|stop)
$1
;;
*)
echo "Usage: $0 {start namespace(optional)|wait namespace(optional)|stop namespace(optional)}"
exit 1
;;
esac