Files
weave-scope/docker/entrypoint.sh
2015-06-03 14:44:16 +00:00

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#!/bin/sh
usage() {
echo "$0 --dns <IP> --hostname <NAME> --searchpath <SEARCHPATH> --app.foo bar --probe.foo bar"
exit 1
}
# This script exists to modify the network settings in the scope containers
# as docker doesn't allow it when started with --net=host
APP_ARGS=""
PROBE_ARGS=""
while true; do
case "$1" in
--dns)
[ $# -gt 1 ] || usage
DNS_SERVER="$2"
shift 2
;;
--searchpath)
[ $# -gt 1 ] || usage
SEARCHPATH="$2"
shift 2
;;
--app.*)
[ $# -gt 1 ] || usage
ARG_NAME=$(echo "$1" | sed 's/\-\-app\.//')
ARG_VALUE="$2"
shift 2
APP_ARGS="$APP_ARGS -$ARG_NAME=$ARG_VALUE"
;;
--probe.*)
[ $# -gt 1 ] || usage
ARG_NAME=$(echo "$1" | sed 's/\-\-probe\.//')
ARG_VALUE="$2"
shift 2
PROBE_ARGS="$PROBE_ARGS -$ARG_NAME=$ARG_VALUE"
;;
*)
break
;;
esac
done
mkdir -p /etc/weave
echo "$APP_ARGS" >/etc/weave/app.args
echo "$PROBE_ARGS" >/etc/weave/probe.args
if [ -n "$DNS_SERVER" -a -n "$SEARCHPATH" ]; then
echo "domain $SEARCHPATH" >/etc/resolv.conf
echo "search $SEARCHPATH" >>/etc/resolv.conf
echo "nameserver $DNS_SERVER" >>/etc/resolv.conf
fi
# End of the command line can optionally be some
# addresses of probes to connect to, for people not
# using Weave DNS. We stick these in /etc/weave/probes
# for the run-app script to pick up.
MANUAL_PROBES=$@
echo "$MANUAL_PROBES" >/etc/weave/probes
exec /sbin/runsvdir /etc/service