mirror of https://github.com/hashicorp/consul
Michele Degges
3 years ago
committed by
GitHub
parent
09c5bac102
commit
407cd332ff
@ -0,0 +1,82 @@
|
||||
#!/usr/bin/dumb-init /bin/sh
|
||||
set -e
|
||||
|
||||
# Note above that we run dumb-init as PID 1 in order to reap zombie processes
|
||||
# as well as forward signals to all processes in its session. Normally, sh
|
||||
# wouldn't do either of these functions so we'd leak zombies as well as do
|
||||
# unclean termination of all our sub-processes.
|
||||
# As of docker 1.13, using docker run --init achieves the same outcome.
|
||||
|
||||
# You can set CONSUL_BIND_INTERFACE to the name of the interface you'd like to
|
||||
# bind to and this will look up the IP and pass the proper -bind= option along
|
||||
# to Consul.
|
||||
CONSUL_BIND=
|
||||
if [ -n "$CONSUL_BIND_INTERFACE" ]; then
|
||||
CONSUL_BIND_ADDRESS=$(ip -o -4 addr list $CONSUL_BIND_INTERFACE | head -n1 | awk '{print $4}' | cut -d/ -f1)
|
||||
if [ -z "$CONSUL_BIND_ADDRESS" ]; then
|
||||
echo "Could not find IP for interface '$CONSUL_BIND_INTERFACE', exiting"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
CONSUL_BIND="-bind=$CONSUL_BIND_ADDRESS"
|
||||
echo "==> Found address '$CONSUL_BIND_ADDRESS' for interface '$CONSUL_BIND_INTERFACE', setting bind option..."
|
||||
fi
|
||||
|
||||
# You can set CONSUL_CLIENT_INTERFACE to the name of the interface you'd like to
|
||||
# bind client intefaces (HTTP, DNS, and RPC) to and this will look up the IP and
|
||||
# pass the proper -client= option along to Consul.
|
||||
CONSUL_CLIENT=
|
||||
if [ -n "$CONSUL_CLIENT_INTERFACE" ]; then
|
||||
CONSUL_CLIENT_ADDRESS=$(ip -o -4 addr list $CONSUL_CLIENT_INTERFACE | head -n1 | awk '{print $4}' | cut -d/ -f1)
|
||||
if [ -z "$CONSUL_CLIENT_ADDRESS" ]; then
|
||||
echo "Could not find IP for interface '$CONSUL_CLIENT_INTERFACE', exiting"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
CONSUL_CLIENT="-client=$CONSUL_CLIENT_ADDRESS"
|
||||
echo "==> Found address '$CONSUL_CLIENT_ADDRESS' for interface '$CONSUL_CLIENT_INTERFACE', setting client option..."
|
||||
fi
|
||||
|
||||
# CONSUL_DATA_DIR is exposed as a volume for possible persistent storage. The
|
||||
# CONSUL_CONFIG_DIR isn't exposed as a volume but you can compose additional
|
||||
# config files in there if you use this image as a base, or use CONSUL_LOCAL_CONFIG
|
||||
# below.
|
||||
CONSUL_DATA_DIR=/consul/data
|
||||
CONSUL_CONFIG_DIR=/consul/config
|
||||
|
||||
# You can also set the CONSUL_LOCAL_CONFIG environemnt variable to pass some
|
||||
# Consul configuration JSON without having to bind any volumes.
|
||||
if [ -n "$CONSUL_LOCAL_CONFIG" ]; then
|
||||
echo "$CONSUL_LOCAL_CONFIG" > "$CONSUL_CONFIG_DIR/local.json"
|
||||
fi
|
||||
|
||||
# If the user is trying to run Consul directly with some arguments, then
|
||||
# pass them to Consul.
|
||||
if [ "${1:0:1}" = '-' ]; then
|
||||
set -- consul "$@"
|
||||
fi
|
||||
|
||||
# Look for Consul subcommands.
|
||||
if [ "$1" = 'agent' ]; then
|
||||
shift
|
||||
set -- consul agent \
|
||||
-data-dir="$CONSUL_DATA_DIR" \
|
||||
-config-dir="$CONSUL_CONFIG_DIR" \
|
||||
$CONSUL_BIND \
|
||||
$CONSUL_CLIENT \
|
||||
"$@"
|
||||
elif [ "$1" = 'version' ]; then
|
||||
# This needs a special case because there's no help output.
|
||||
set -- consul "$@"
|
||||
elif consul --help "$1" 2>&1 | grep -q "consul $1"; then
|
||||
# We can't use the return code to check for the existence of a subcommand, so
|
||||
# we have to use grep to look for a pattern in the help output.
|
||||
set -- consul "$@"
|
||||
fi
|
||||
|
||||
# NOTE: Unlike in the regular Consul Docker image, we don't have code here
|
||||
# for changing data-dir directory ownership or using su-exec because OpenShift
|
||||
# won't run this container as root and so we can't change data dir ownership,
|
||||
# and there's no need to use su-exec.
|
||||
|
||||
exec "$@"
|
||||
Loading…
Reference in new issue