I'm trying to create a service from executing a jar file in Ubuntu machine. I have created a wrapper with the below code
#!/bin/sh
SERVICE_NAME=MyService
PATH_TO_JAR=/home/nani/Documents/My_Build_executable/My_Build-12-06.jar
PID_PATH_NAME=/tmp/MyService-pid
case $1 in
start)
echo "Starting $SERVICE_NAME ..."
if [ ! -f $PID_PATH_NAME ]; then
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
echo $! > $PID_PATH_NAME
echo "$SERVICE_NAME started ..."
else
echo "$SERVICE_NAME is already running ..."
fi
;;
stop)
if [ -f $PID_PATH_NAME ]; then
PID=$(cat $PID_PATH_NAME);
echo "$SERVICE_NAME stoping ..."
kill $PID;
echo "$SERVICE_NAME stopped ..."
rm $PID_PATH_NAME
else
echo "$SERVICE_NAME is not running ..."
fi
;;
restart)
if [ -f $PID_PATH_NAME ]; then
PID=$(cat $PID_PATH_NAME);
echo "$SERVICE_NAME stopping ...";
kill $PID;
echo "$SERVICE_NAME stopped ...";
rm $PID_PATH_NAME
echo "$SERVICE_NAME starting ..."
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
echo $! > $PID_PATH_NAME
echo "$SERVICE_NAME started ..."
else
echo "$SERVICE_NAME is not running ..."
fi
;;
esac
but I'm ge stuck with the PID_PATH_NAME. what is this PID and what exactly I need to do to configure/create/modify this one? please help me.
The term PID stands for Process IDentifier, and is a unique number each process gets. By saving the PID to a file, the system can later find the PID of the service, and will be able to, for example, send a stop-signal to the service when it should be stopped.
Related
When deploying an application into dedicated Bluemix it uses DEA architecture by default. How can I force it to use DIEGO architecture instead?
You have to use more steps. Deploy without start, switch to diego, start.
cf push APPLICATION_NAME --no-start
cf disable-diego APPLICATION_NAME
cf start APPLICATION_NAME
Ref Deploying Apps
I built a bash exec to do this, which will use your existing manifest.yml file and pack all of this into a single request. The contents of the bash exec follow:
#!/bin/bash
filename="manifest.yml"
if [ -e $filename ];
then
echo "using manifest.yml file in this directory"
else
echo "no manifest.yml file found. exiting"
exit -2
fi
shopt -s nocasematch
string='name:'
targetName=""
echo "Retrieving name from manifest file"
while read -r line
do
name="$line"
variable=${name%%:*}
if [[ $variable == *"name"* ]]
then
inBound=${name#*:}
targetName="$(echo -e "${inBound}" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
fi
done < "$filename"
if [ "$targetName" == "" ];
then
echo "Could not find name of application in manifest.yml file. Cancelling build."
echo "application name is identified by the 'name: ' term in the manifest.yml file"
exit -1
else
echo "starting cf push for $targetName"
cf push --no-start
echo "cf enable-diego $targetName"
cf enable-diego $targetName
echo "cf start $targetName"
cf start $targetName
exit 0
fi
Just put this code into your editor as a new file and then make the file executable. I keep a copy of this exec in each of my repos in the root directory. After doing a copy-paste and executing this exec, you may get the following error:
/bin/bash^M: bad interpreter: No such file or directory
If you do, just run the dos2unix command and it will 'fix up' the line endings to match your os.
I need to use mongodb with the --rest option. But mongodb is started automatically on boot, so I guess I need to modify a file or something.
Where can I add this --rest option?
I have this file at /etc/init/mongodb.conf, not sure what to edit:
# Ubuntu upstart file at /etc/init/mongodb.conf
limit nofile 20000 20000
kill timeout 300 # wait 300s between SIGTERM and SIGKILL.
pre-start script
mkdir -p /var/lib/mongodb/
mkdir -p /var/log/mongodb/
end script
start on runlevel [2345]
stop on runlevel [06]
script
ENABLE_MONGODB="yes"
if [ -f /etc/default/mongodb ]; then . /etc/default/mongodb; fi
if [ "x$ENABLE_MONGODB" = "xyes" ]; then exec start-stop-daemon --start --quiet --chuid mongodb --exec /usr/bin/mongod -- --config /etc/mongodb.conf; fi
end script
And this file at /etc/init.d/mongodb:
#!/bin/sh -e
# upstart-job
#
# Symlink target for initscripts that have been converted to Upstart.
set -e
INITSCRIPT="$(basename "$0")"
JOB="${INITSCRIPT%.sh}"
if [ "$JOB" = "upstart-job" ]; then
if [ -z "$1" ]; then
echo "Usage: upstart-job JOB COMMAND" 1>&2
exit 1
fi
JOB="$1"
INITSCRIPT="$1"
shift
else
if [ -z "$1" ]; then
echo "Usage: $0 COMMAND" 1>&2
exit 1
fi
fi
COMMAND="$1"
shift
if [ -z "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
ECHO=echo
else
ECHO=:
fi
$ECHO "Rather than invoking init scripts through /etc/init.d, use the service(8)"
$ECHO "utility, e.g. service $INITSCRIPT $COMMAND"
# Only check if jobs are disabled if the currently _running_ version of
# Upstart (which may be older than the latest _installed_ version)
# supports such a query.
#
# This check is necessary to handle the scenario when upgrading from a
# release without the 'show-config' command (introduced in
# Upstart for Ubuntu version 0.9.7) since without this check, all
# installed packages with associated Upstart jobs would be considered
# disabled.
#
# Once Upstart can maintain state on re-exec, this change can be
# dropped (since the currently running version of Upstart will always
# match the latest installed version).
UPSTART_VERSION_RUNNING=$(initctl version|awk '{print $3}'|tr -d ')')
if dpkg --compare-versions "$UPSTART_VERSION_RUNNING" ge 0.9.7
then
initctl show-config -e "$JOB"|grep -q '^ start on' || DISABLED=1
fi
case $COMMAND in
status)
$ECHO
$ECHO "Since the script you are attempting to invoke has been converted to an"
$ECHO "Upstart job, you may also use the $COMMAND(8) utility, e.g. $COMMAND $JOB"
$COMMAND "$JOB"
;;
start|stop)
$ECHO
$ECHO "Since the script you are attempting to invoke has been converted to an"
$ECHO "Upstart job, you may also use the $COMMAND(8) utility, e.g. $COMMAND $JOB"
if status "$JOB" 2>/dev/null | grep -q ' start/'; then
RUNNING=1
fi
if [ -z "$RUNNING" ] && [ "$COMMAND" = "stop" ]; then
exit 0
elif [ -n "$RUNNING" ] && [ "$COMMAND" = "start" ]; then
exit 0
elif [ -n "$DISABLED" ] && [ "$COMMAND" = "start" ]; then
exit 0
fi
$COMMAND "$JOB"
;;
restart)
$ECHO
$ECHO "Since the script you are attempting to invoke has been converted to an"
$ECHO "Upstart job, you may also use the stop(8) and then start(8) utilities,"
$ECHO "e.g. stop $JOB ; start $JOB. The restart(8) utility is also available."
if status "$JOB" 2>/dev/null | grep -q ' start/'; then
RUNNING=1
fi
if [ -n "$RUNNING" ] ; then
stop "$JOB"
fi
# If the job is disabled and is not currently running, the job is
# not restarted. However, if the job is disabled but has been forced into the
# running state, we *do* stop and restart it since this is expected behaviour
# for the admin who forced the start.
if [ -n "$DISABLED" ] && [ -z "$RUNNING" ]; then
exit 0
fi
start "$JOB"
;;
reload|force-reload)
$ECHO
$ECHO "Since the script you are attempting to invoke has been converted to an"
$ECHO "Upstart job, you may also use the reload(8) utility, e.g. reload $JOB"
reload "$JOB"
;;
*)
$ECHO
$ECHO "The script you are attempting to invoke has been converted to an Upstart" 1>&2
$ECHO "job, but $COMMAND is not supported for Upstart jobs." 1>&2
exit 1
esac
It's probably cleaner to enable the REST interface via /etc/mongodb.conf by adding a line of:
rest = true
That setting is documented here.
MongoDB version 2.6 has switched to a YAML config file. The following two entries are required to prevent the following startup warning:
mongodb WARNING: --rest is specified without --httpinterface
net:
http:
enabled: true
RESTInterfaceEnabled: true
When u start the server using command mongod , add --rest option with command mongod like this mongod --rest.
refer mongod - MongoDB Manual 2.6.
After run command complete , u can use the following the simple Restful API:
http://127.0.0.1:28017/databaseName/collectionName/
Here is simple RestFul API Doc.
Just start the server using mongod --rest
Note: By default, the rest API's are inaccessible due to security issues. The web interface is accessible at localhost:<port>, where the number is 1000 more than the mongod port. For example, your mongodb server is running at 27017 (by default) then you can access mongodb at
http://127.0.0.1:28017/<db-name>/<collection-name>/
I am having a weird problem with mongodb after installation it is ending with a message
invoke-rc.d: unknown initscript, /etc/init.d/mongodb not found.
dpkg: error processing mongodb-10gen (--configure):
What is wrong here I followed the steps given here: http://www.mongodb.org/display/DOCS/Ubuntu+and+Debian+packages
The issue is that you are trying to install a version packaged for Upstart init services, but Debian Squeeze still uses SysV init by default.
There is a note on this in the install docs:
http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian-or-ubuntu-linux/#installing-mongodb
If you are using Debian or Ubuntu that uses SysV style init process, use the following line:
deb http://downloads-distro.mongodb.org/repo/debian-sysvinit dist 10gen
This means that you need to create mongodb start script in /etc/init.d/
Try this script
#!/bin/bash
#
# mongodb Startup script for the mongodb server
#
# chkconfig: - 64 36
# description: MongoDB Database Server
#
# processname: mongodb
#
# Source function library
. /lib/lsb/init-functions
if [ -f /etc/sysconfig/mongodb ]; then
. /etc/sysconfig/mongodb
fi
prog="mongod"
mongod="/usr/local/mongodb/bin/mongod"
RETVAL=0
start() {
echo -n $"Starting $prog: "
daemon $mongod "--fork --logpath /var/log/mongodb.log --logappend 2>&1 >>/var/log/mongodb.log"
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
return $RETVAL
}
stop() {
echo -n $"Stopping $prog: "
killproc $prog
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
return $RETVAL
}
reload() {
echo -n $"Reloading $prog: "
killproc $prog -HUP
RETVAL=$?
echo
return $RETVAL
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
condrestart)
if [ -f /var/lock/subsys/$prog ]; then
stop
start
fi
;;
reload)
reload
;;
status)
status $mongod
RETVAL=$?
;;
*)
echo $"Usage: $0 {start|stop|restart|condrestart|reload|status}"
RETVAL=1
esac
exit $RETVAL
after type in terminal:
sudo chmod +x /etc/init.d/mongodb
sudo /etc/init.d/mongodb start
ps -A | grep mongod
I'm writing a Django app that uses celery. So far I've been running on Ubuntu, but I'm trying to deploy to CentOS.
Celery comes with a nice init.d script for Debian-based distributions, but it doesn't work on RedHat-based distributions like CentOS because it uses start-stop-daemon. Does anybody have an equivalent one for RedHat that uses the same variable conventions so I can reuse my /etc/default/celeryd file?
Is better solved here:
Celery CentOS init script
You should be good using that one
Since I didn't get an answer, I tried to roll my own:
#!/bin/sh
#
# chkconfig: 345 99 15
# description: celery init.d script
# Defines the following variables
# CELERYD_CHDIR
# DJANGO_SETTINGS_MODULE
# CELERYD
# CELERYD_USER
# CELERYD_GROUP
# CELERYD_LOG_FILE
CELERYD_PIDFILE=/var/run/celery.pid
if test -f /etc/default/celeryd; then
. /etc/default/celeryd
fi
# Source function library.
. /etc/init.d/functions
# Celery options
CELERYD_OPTS="$CELERYD_OPTS -f $CELERYD_LOG_FILE -l $CELERYD_LOG_LEVEL"
if [ -n "$2" ]; then
CELERYD_OPTS="$CELERYD_OPTS $2"
fi
start () {
cd $CELERYD_CHDIR
daemon --user $CELERYD_USER --pidfile $CELERYD_PIDFILE $CELERYD $CELERYD_OPTS &
}
stop () {
if [[ -s $CELERYD_PIDFILE ]] ; then
echo "Stopping Celery"
killproc -p $CELERYD_PIDFILE python
echo "done!"
rm -f $CELERYD_PIDFILE
else
echo "Celery not running."
fi
}
check_status() {
status -p $CELERYD_PIDFILE python
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
check_status
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
exit 1
;;
esac
Below is the batch file I am kicking off at the end of an installer to properly configure my postgres database, however there comes an issue wherein the service is unable to be started.
This is what the service parameters look like:
C:\Program Files\pgsql\bin/pg_ctl.exe runservice -N "MyPostGres" -D "C:/Program Files/pgsql/PGDATA"
Batch file
#echo off
if "%1" == "" goto displayUsage
if "%2" == "" goto displayUsage
if "%3" == "" goto displayUsage
goto setup
:displayUsage
echo supply arguments: SUPER_USER_NAME SUPER_USER_PASSWORD USER_PASSWORD \ >> C:\myLog.log
goto end
:setup
echo %~1 >> C:\myLog.log
echo %~2 >> C:\myLog.log
echo %~3 >> C:\myLog.log
echo calling initdb! >> C:\myLog.log
initdb -U MY_PG ../PGDATA
echo calling pg_ctl register! >> C:\myLog.log
rem provide a variable for PGDATA
pg_ctl register -N TravisPostGres -U MY_PG -P wooo! -D "C:\Program Files\pgsql\PGDATA"
echo calling pg_ctl start! >> C:\myLog.log
pg_ctl start -D ../PGDATA -w
echo calling createuser! %~1 >> C:\myLog.log
createuser -s -UMY_PG %~1
:end
echo the end! >> C:\myLog.log
exit /B 0
I discovered that the issue was the existence of the following file
C:\Program
This file is invisible via explorer view but when executing dir from the c directory it was shown as a 0k file. Deleting this file proved to be the fix.