Puma Redhat/CentOS startup shell script

my_app

#!/bin/bash

# puma - Generic Red Hat Startup script for Puma

# chkconfig: 35 95 05
# description: Generic Puma Startup Script
# processname: puma
# config: /etc/'filename'.conf
# pidfile: /var/run/puma/'filename'.pid

. /etc/rc.d/init.d/functions

# The instance name ('filename') is by default the name of this init script
# In this way another instance can be created by just copying this init script
# and creating a config file with the same name and a .conf extension
# For Example:
#   /etc/init.d/puma14
#   /etc/puma14.conf
# Optionally also create a sysconfig file to override env variables below
#   /etc/sysconfig/puma14
INST=`basename $0`
INSTTRIM=`echo $INST|sed 's/^S[0-9][0-9]//g'`
[[ -h "$INST" ]] && INSTANCE="$INST" || INSTANCE="$INSTTRIM"

# These options can be overriden in /etc/sysconfig/'filename'
PUMA_BIN="bin/puma"
PUMA_USER=rails
PUMA_LOCK_FILE=/var/lock/subsys/${INSTANCE}

# Supply rbenv profile script so that it is sourced in before starting Puma
RBENV=/etc/profile.d/rbenv.sh

# Java Virtual Machine tuning parameters - JRuby only
JAVA_OPTS_GENERAL="-server -Dfile.encoding=UTF-8"
# Enable JMX
#   JMX cannot be used with bundle exec, be sure to start with bin/puma instead. (See: https://github.com/puma/puma/issues/407)
JAVA_OPTS_JMX="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=7100 -Dcom.sun.management.jmxremote.ssl=false -Djmx.remote.x.server.connection.timeout=30000"
# Memory Settings
JAVA_OPTS_MEM="-Xms8192m -Xmx8192m -Xss2048k -XX:PermSize=512m -XX:MaxPermSize=512m -XX:G1HeapRegionSize=8m"
# Garbage Collection Options
JAVA_OPTS_GC="-XX:ReservedCodeCacheSize=256m -XX:+PrintGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintAdaptiveSizePolicy -XX:MaxGCPauseMillis=200 -Dthread.pool.enabled=false -XX:+UseG1GC -XX:+UseCodeCacheFlushing -XX:+ParallelRefProcEnabled -Xloggc:log/jvm_gc_${INSTANCE}.log"

# Rails Environment
RAILS_ENV=development

# Directory containing the Rails Application
# Changes to this directory before starting
RAILS_APP_PATH=/var/www/rails/${INSTANCE}/current

# Where to store the pid file
PUMA_PID_FILE=${RAILS_APP_PATH}/../shared/tmp/pids/${INSTANCE}.pid

# URI to bind to (tcp://, unix://, ssl://)
PUMA_BIND_URI=tcp://127.0.0.1:3200

# min:max threads to use (default 0:16)
PUMA_THREADS=0:16

PUMA_LOG_FILE=${RAILS_APP_PATH}/log/${INSTANCE}.log

# So that other options can be supplied in sysconfig file
PUMA_OTHER_OPTIONS=

# Set time to wait for process to start or stop
START_WAIT=180
STOP_WAIT=120

# By default TMPDIR uses /tmp, but that is only a 2GB file system. Use a custom path so ruby can process larger file uploads.
export TMPDIR=/export/rails/tmp

# Source sysconfig options so that above values can be overriden
SYSCONFIG="/etc/sysconfig/${INSTANCE}"
if [ -f "$SYSCONFIG" ]; then
  . "$SYSCONFIG" || true
fi

# Source in rbenv if present
if [ -f "$RBENV" ]; then
  . "$RBENV" || true
fi

# Export Java Options for when JRuby is being used
export JAVA_OPTS="${JAVA_OPTS_GENERAL} ${JAVA_OPTS_JMX} ${JAVA_OPTS_MEM} ${JAVA_OPTS_GC}"

OPTIONS="--environment ${RAILS_ENV} --bind ${PUMA_BIND_URI} --threads ${PUMA_THREADS} --pidfile ${PUMA_PID_FILE}  ${PUMA_OTHER_OPTIONS}"

start()
{
  echo -n $"Starting ${INSTANCE}: "
  cd ${RAILS_APP_PATH} || exit 1
  su "${PUMA_USER}" -c "nohup ${PUMA_BIN} ${OPTIONS} 1>>${PUMA_LOG_FILE} 2>&1&"

  RETVAL=$?
  # Now wait for Pidfile to be created by Puma
  if [ $RETVAL -eq 0 ]; then
    touch $PUMA_LOCK_FILE
    local count=0
    while [ $count -lt $START_WAIT ] && [ ! -e $PUMA_PID_FILE ]; do
      count=$(($count + 1))
      [ $(($count % 5)) -eq 0 ] && echo -n .
      sleep 1
    done
    if [ $count -ge $START_WAIT ]; then
      echo -e "\\033[60G[  \\033[1;31mFAILED\\033[0;39m  ]"
      RETVAL=1
      return $RETVAL
    fi
  fi
  echo -e "\\033[60G[  \\033[1;32mOK\\033[0;39m  ] (pid: `cat $PUMA_PID_FILE`)"
  return $RETVAL
}

stop()
{
  echo -n $"Stopping ${INSTANCE}: "
  if [ ! -e $PUMA_PID_FILE ] ; then
    echo -e "\\033[60G[  \\033[1;32mPid file missing, assuming already stopped\\033[0;39m  ]"
    RETVAL=0
    return $RETVAL
  fi
  PID=`cat $PUMA_PID_FILE`

  kill -s TERM $PID
  local count=0
  while [ $count -lt $STOP_WAIT ] && checkpid $PID; do
    count=$(($count + 1))
    [ $(($count % 5)) -eq 0 ] && echo -n .
    sleep 1
  done
  if [ $count -ge $STOP_WAIT ]; then
    kill -9 $PID
    rm -f $PUMA_LOCK_FILE $PUMA_PID_FILE
    echo -e "\\033[60G[  \\033[1;31mTerminated with extreme prejudice\\033[0;39m  ]"
    RETVAL=1
  else
    echo -e "\\033[60G[  \\033[1;32mOK\\033[0;39m  ]"
    rm -f $PUMA_LOCK_FILE $PUMA_PID_FILE
    RETVAL=0
  fi
  return $RETVAL
}

restart () {
  stop
  start
}

RETVAL=0

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart|reload|force-reload)
    restart
    ;;
  condrestart)
    [ -f $PUMA_LOCK_FILE ] && restart || :
    ;;
  status)
    status -p $PUMA_PID_FILE ${INSTANCE}
    RETVAL=$?
    ;;
  *)
    echo "Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"
    RETVAL=1
esac

exit $RETVAL

myapp.sysconfig

#!/bin/bash

# See startup script for details on these settings
RAILS_ENV=Production
PUMA_USER=rails
PUMA_GROUP=user
PUMA_BIND_URI="tcp://127.0.0.1:<%= puma_port %>"
# Production settings
PUMA_THREADS=16:100
# Only applicable when using JRuby
JAVA_OPTS_MEM="-Xms8192m -Xmx8192m -Xss2048k -XX:PermSize=512m -XX:MaxPermSize=512m -XX:G1HeapRegionSize=8m"
# Test environment settings
#    PUMA_THREADS=1:16
#    JAVA_OPTS_MEM="-Xms2048m -Xmx3072m -Xss2048k -XX:PermSize=512m -XX:MaxPermSize=512m -XX:G1HeapRegionSize=4m"
#    # Give Rails server more time since on slower machines
#    START_WAIT=300
#    STOP_WAIT=180
CLASSPATH=config/etc
# Override the app path to support multiple Puma instances running from the same location
RAILS_APP_PATH=/var/www/rails/my_app/current
PUMA_LOG_FILE=${RAILS_APP_PATH}/log/${INSTANCE}.log
PUMA_PID_FILE=${RAILS_APP_PATH}/../shared/tmp/pids/${INSTANCE}.pid
# Enable JMX for remote Java management. Only applicable when using JRuby
JAVA_OPTS_JMX="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=<%= jmx_port %> -Dcom.sun.management.jmxremote.ssl=false -Djmx.remote.x.server.connection.timeout=30000"