For sample i use uereka microservices
- Create user for running API
# useradd api
# passwd api
- login as api create directory eureka for put jar file, copy
jar file to /home/api/eureka
# mkdir eureka
- Create script wrapper for system V init in /home/api/eureka
#!/bin/sh
### BEGIN INIT INFO
# chkconfig: 345 98 01
# description: Startup Script for Eureka API
# Provides: Eureka
### END INIT INFO
SCRIPT="nohup java -jar -DSpring.profiles.active=cloud1 /home/api/eureka/eureka-service.jar"
RUNAS=api
PIDFILE=/home/api/eureka/eureka-api.pid
LOGFILE=/home/api/eureka/eureka-api.log
start() {
if [ -f $PIDFILE ] && [ -s $PIDFILE ] && kill -0 $(cat $PIDFILE); then
echo 'Eureka already running' >&2
return 1
fi
cd /home/api/eureka
echo 'Starting service… Eureka' >&2
local CMD="$SCRIPT &> \"$LOGFILE\" & echo \$!"
su -c "$CMD" $RUNAS > "$PIDFILE"
# Try with this command line instead of above if not workable
# su -s /bin/sh $RUNAS -c "$CMD" > "$PIDFILE"
# or
# nohup java -jar -DSpring.profiles.active=cloud1 /home/api/eureka/eureka.jar &> /home/api/eureka/eureka-api.log & echo $! > $PIDFILE
PID=$(cat $PIDFILE)
if pgrep -u $RUNAS -f eureka-service.jar > /dev/null
then
echo "API Eureka is now running, the PID is $PID"
else
echo ''
echo "Error! Could not start Eureka !"
fi
}
stop() {
if [ ! -f "$PIDFILE" ] || ! kill -0 $(cat "$PIDFILE"); then
echo 'Service Eureka not running' >&2
return 1
fi
echo 'Stopping service…' >&2
kill -15 $(cat "$PIDFILE") && rm -f "$PIDFILE"
echo 'Service Eureka stopped' >&2
}
uninstall() {
echo -n "Are you really sure you want to uninstall this service? That cannot be undone. [yes|No] "
local SURE
read SURE
if [ "$SURE" = "yes" ]; then
stop
rm -f "$PIDFILE"
echo "Notice: log file was not removed: $LOGFILE" >&2
update-rc.d -f eureka remove
rm -fv "$0"
fi
}
status() {
printf "%-50s" "Checking Eureka ..."
if [ -f $PIDFILE ] && [ -s $PIDFILE ]; then
PID=$(cat $PIDFILE)
if [ -z "$(ps axf | grep ${PID} | grep -v grep)" ]; then
printf "%s\n" "The process appears to be dead but pidfile still exists"
else
echo "Running, the PID is $PID"
fi
else
printf "%s\n" "Service Eureka not running"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status
;;
uninstall)
uninstall
;;
restart)
stop
start
;;
*)
echo "Usage: $0 {start|stop|status|restart|uninstall}"
esac
- Enable service in system V and start eureka
# sudo ln -s /home/api/eureka/eureka /etc/init.d/eureka
# sudo chkconfig --add eureka
# sudo chkconfig eureka on
# sudo service eureka start
- Firewall
# iptables -I INPUT -p tcp --destination-port 8761 -j ACCEPT
# service iptables save
