java app startup script template

startup.sh

#!/usr/bin/env bash

# project artifact: ${project.artifact}-${project.version}.jar
# startup script of core
# 需要一个参数： 启动的配置文件名称，这个配置文件必须在当前classpath下
# 启动示例：
#   startup.sh 2551.conf 0    0     listening port specified in config file, disable jmx
#   startup.sh 2551.conf 3551       listening port is 3551 , disable jmx
#   startup.sh my.conf   5555 8555  listening port is 5555, jmx port is 8555
#   startup.sh 3551.conf 0    4444  listening port specified in config file, jmx port is 4444
#   startup.sh test.conf 0          listening port specified in config file, disable jmx

if [ "$#" -lt 1 ]; then
    echo "usage: $0 <target conf file under classpath> <listening port> <jmx port>";
    echo " port number: local actor system listening port, default is
         '0', means use the value specified in config file ('akka.remote.netty.tcp.port')";
    echo " jmx port number: enable jmx (e.g. jconsole), default is '0', means disable jmx connection" ;
    exit 1;
fi

# JAVA_HOME=""
## check JAVA_HOME
if [ -z ${JAVA_HOME} ]
then
    # 如果没有设置，则默认设置为默认的路径来尝试
    JAVA_HOME="/home/work/local/jdk1.8.0_51"
fi

if [ ! -e ${JAVA_HOME} ]
then
    echo "JAVA_HOME: ${JAVA_HOME} does not exist" >&2;
    exit 1;
fi

SCRIPT_DIR=$(cd "$(dirname "$0")"; pwd);
CONF_FILE=$1
PORT=${2:-"0"}
JMX_PORT=${3:-"0"}

if [[ $PORT =~ '^[0-9]+$' ]] ; then
    echo "Port is not a number" >&2;
    exit 1;
fi

if [[ ${JMX_PORT} =~ '^[0-9]+$' ]] ; then
    echo "JMX Port is not a number" >&2;
    exit 1;
fi

HEAP_DUMP_DIR=${SCRIPT_DIR}/heapdump
LOG_DIR=${SCRIPT_DIR}/logs

mkdir -p ${LOG_DIR} ${HEAP_DUMP_DIR}

# jvm8 options here   http://docs.oracle.com/javase/8/docs/technotes/tools/unix/java.html
#   -XX:MaxMetaspaceSize                      原PermGen，一般都要设置这个值，因为vm默认无限制
#   -XX:+UseConcMarkSweepGC                   CMS (latency first) 连带默认开启`-XX:+UseParNewGC` （另: 不要禁用ParNewGC）
#   -XX:+ScavengeBeforeFullGC                 FullGC之前先回收年轻带，vm默认开启
#   -XX:+CMSScavengeBeforeRemark              Remark阶段之前尝试回收一次年轻带
#   -Dsun.net.inetaddr.ttl=<TTL in seconds>   dns cache ttl, jvm default is forever, usually a few minutes in practice
#   -Djava.rmi.server.hostname=<external IP>  rmi stuff, set this if there's multiple ip addresses
#   -XX:HeapDumpPath                          可以指定目录或者文件名，建议指定目录，指定目录时自动生成的文件名里带有pid值

JAVA_OPTS=" -server
    -Xms1024m -Xmx2048m -Xmn800m -XX:MaxMetaspaceSize=256m
    -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
    -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=75
    -XX:+ScavengeBeforeFullGC -XX:+CMSScavengeBeforeRemark
    -XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails -Xloggc:${LOG_DIR}/gc.${CONF_FILE}.log
    -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M
    -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=${HEAP_DUMP_DIR} "

##     jmx for jconsole and jvisual
JMX_OPTS=" -Dcom.sun.management.jmxremote
    -Dcom.sun.management.jmxremote.port=${JMX_PORT}
    -Dcom.sun.management.jmxremote.authenticate=false
    -Dcom.sun.management.jmxremote.ssl=false "


if [[ "${PORT}" != "0" ]] ; then
    JAVA_OPTS=" ${JAVA_OPTS} -Dakka.remote.netty.tcp.port=${PORT} ";
fi

if [[ "${JMX_PORT}" != "0" ]] ; then
    JAVA_OPTS=" ${JAVA_OPTS} ${JMX_OPTS} ";
fi

echo "use JAVA_HOME: ${JAVA_HOME}\n CONFIG FILE: ${CONF_FILE}" >&2

nohup ${JAVA_HOME}/bin/java \
    ${JAVA_OPTS} -DAPP_ID=${CONF_FILE} -DLOGBACK_OUT_REF=FILE \
    -cp .:${project.artifactId}-${project.version}.jar \
    cluster.ClusterStartup -f ${CONF_FILE} > ${LOG_DIR}/core-${CONF_FILE}-nohup.log 2>&1 &

echo $! > ${SCRIPT_DIR}/run-${CONF_FILE}.pid
echo "write pid to ${SCRIPT_DIR}/run-${CONF_FILE}.pid"