From 02289479ef9fb6fb529b5e38f65418c728ca2502 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Roemer Date: Wed, 21 Oct 2015 16:27:05 +0100 Subject: [PATCH] Docker `socat` link creation - `start.sh` will now verify that the port is not already used by another service - Resolve #1807 - Log when a service is created, or could not be created - Keep track of which port is already used, including goes & sshd port --- docker/start.sh | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/docker/start.sh b/docker/start.sh index c687515f5d..85a6cfa5d0 100755 --- a/docker/start.sh +++ b/docker/start.sh @@ -13,12 +13,24 @@ for f in /data/gogs/data /data/gogs/conf /data/gogs/log /data/git /data/ssh; do done # Bind linked docker container to localhost socket using socat -env | sed -En 's|(.*)_PORT_([0-9]*)_TCP=tcp://(.*):(.*)|\1_\2 socat -ls TCP4-LISTEN:\2,fork,reuseaddr TCP4:\3:\4|p' | \ -while read NAME CMD; do - mkdir -p /app/gogs/docker/s6/SOCAT_$NAME - echo -e "#!/bin/sh\nexec $CMD" > /app/gogs/docker/s6/SOCAT_$NAME/run - chmod +x /app/gogs/docker/s6/SOCAT_$NAME/run -done +USED_PORT="80:443:22" +while read NAME ADDR PORT; do + if test -z "$NAME$ADDR$PORT"; then + continue + elif echo $USED_PORT | grep -E "(^|:)$PORT($|:)" > /dev/null; then + echo "init:socat | Can't bind linked container ${NAME} to localhost, port ${PORT} already in use" 1>&2 + else + SERV_FOLDER=/app/gogs/docker/s6/SOCAT_${NAME}_${PORT} + mkdir -p ${SERV_FOLDER} + CMD="socat -ls TCP4-LISTEN:${PORT},fork,reuseaddr TCP4:${ADDR}:${PORT}" + echo -e "#!/bin/sh\nexec $CMD" > ${SERV_FOLDER}/run + chmod +x ${SERV_FOLDER}/run + USED_PORT="${USED_PORT}:${PORT}" + echo "init:socat | Linked container ${NAME} will be binded to localhost on port ${PORT}" 1>&2 + fi +done << EOT +$(env | sed -En 's|(.*)_PORT_([0-9]+)_TCP=tcp://(.*):([0-9]+)|\1 \3 \4|p') +EOT # Exec CMD or S6 by default if nothing present if [ $# -gt 0 ];then