dubbo-monitor 监控中心安装BUG处理

在给自己的阿里云装 dubbo监控系统的时候出现了 启动不起来的原因

## There is insufficient memory for the Java Runtime Environment to continue.# Native memory allocation (malloc) failed to allocate 1879048192 bytes for committing reserved memory.# Possible reasons:#   The system is out of physical RAM or swap space#   In 32 bit mode, the process size limit was hit# Possible solutions:#   Reduce memory load on the system#   Increase physical memory or swap space#   Check if swap backing store is full#   Use 64 bit Java on a 64 bit OS#   Decrease Java heap size (-Xmx/-Xms)#   Decrease number of Java threads#   Decrease Java thread stack sizes (-Xss)#   Set larger code cache with -XX:ReservedCodeCacheSize=# This output file may be truncated or incomplete.##  Out of Memory Error (os_linux.cpp:2756), pid=9808, tid=139890146473728## JRE version:  (7.0_75-b13) (build )# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.75-b04 mixed mode linux-amd64 compressed oops)# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again#

上面说的是没有足够的内存启动 监控  这个时候查看你解压出来的启动文件 vi start.sh文件就是启动文件

STDOUT_FILE=$LOGS_DIR/stdout.logLIB_DIR=$DEPLOY_DIR/libLIB_JARS=`ls $LIB_DIR|grep .jar|awk '{print "'$LIB_DIR'/"$0}'|tr "\n" ":"`JAVA_OPTS=" -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true "JAVA_DEBUG_OPTS=""if [ "$1" = "debug" ]; then    JAVA_DEBUG_OPTS=" -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n "fiJAVA_JMX_OPTS=""if [ "$1" = "jmx" ]; then    JAVA_JMX_OPTS=" -Dcom.sun.management.jmxremote.port=1099 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false "fiJAVA_MEM_OPTS=""BITS=`java -version 2>&1 | grep -i 64-bit`if [ -n "$BITS" ]; then    JAVA_MEM_OPTS=" -server -Xmx2g -Xms2g -Xmn256m -XX:PermSize=128m -Xss256k -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 "else    JAVA_MEM_OPTS=" -server -Xms1g -Xmx1g -XX:PermSize=128m -XX:SurvivorRatio=2 -XX:+UseParallelGC "fiecho -e "Starting the $SERVER_NAME ...\c"nohup java $JAVA_OPTS $JAVA_MEM_OPTS $JAVA_DEBUG_OPTS $JAVA_JMX_OPTS -classpath $CONF_DIR:$LIB_JARS com.alibaba.dubbo.container.Main > $STDOUT_FILE 2>&1 &

发现启动需要2个g内存。。

-Xmx2g -Xms2g -Xmn256m  

-Xms128m JVM初始分配的堆内存
-Xmx512m JVM最大允许分配的堆内存，按需分配
-XX:PermSize=64M JVM初始分配的非堆内存
-XX:MaxPermSize=128M JVM最大允许分配的非堆内存，按需分配

由于我的linux 的内存就只有2个G

而在启动的时候dubbo-monitor 默认需要2G 所以启动不起来 修改成 -Xmx512m -Xms512m  在启动就好了