开启tomcat的apr模式，并利用redis做tomcat7的session的共享。

yum -y install  readline*  xmlto kernel-devel yum* screen vim* psmisc wget lrzsz pcre-devel libtidy libtidy-devel iptraf sysstat libevent libevent-devel perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker tar rrdtool ntp* dos2unix setup* net-snmp-utils net-snmp-devel ruby ruby-devel php-snmp cmake net-snmp-perl net-snmp net-snmp-libs wget elinks make autoconf213 m4 gcc gcc-c++ automake autoconf fontconfig fontconfig-devel libjpeg libjpeg* libjpeg-devel libpng libpng-devel freetype freetype* freetype-devel libxml2 libxml2-devel libdhash libdhash-devel  libxslt* zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2* libc-client libc-client-devel libicu-devel ncurses ncurses-devel xmlrpc-c xmlrpc-c-devel curl curl-devel e2fsprogs e2fsprogs-devel  krb5-devel libidn libidn-devel openssl openssl-devel openldap openldap-devel openldap-clients openldap-servers gd gd-devel pam* gettext gettext-devel  keyutils  compat* mpfr cpp libgomp libstdc++-devel ppl cloog-ppl keyutils-libs-devel libcom_err-devel libsepol-devel libXpm*  php-gd ncurses* libtool*  patch unzip bison-devel bison libcom_err-devel libsepol-devel gtk* libselinux-devel libtiff libtiff*  php-common policycoreutils telnet t1lib t1lib* nasm nasm*

vim /etc/profile
export JAVA_HOME=/data/java

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar

export JAVA_HOME JAVA_BIN PATH CLASSPATH

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apr/lib

export LD_LIBRARY_PATH

yum install -y zlib

tar zxf openssl-1.0.2h.tar.gz

cd openssl-1.0.2h

./config shared zlib

make

make install

mv /usr/bin/openssl /usr/bin/openssl.bak

mv /usr/include/openssl /usr/include/openssl.bak

ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl

ln -s /usr/local/ssl/include/openssl /usr/include/openssl

echo “/usr/local/ssl/lib” >> /etc/ld.so.conf

ldconfig -v

openssl version -a

tar -xvf apr-1.5.2.tar.gz

cd apr-1.5.2

./configure --prefix=/usr/local/apr

make

make install

tar -xvf apr-iconv-1.2.1.tar.gz

cd apr-iconv-1.2.1

./configure --prefix=/usr/local/apr-iconv --with-apr=/usr/local/apr

make

make install

tar zxvf apr-util-1.5.4.tar.gz

cd apr-util-1.5.4

./configure --prefix=/usr/local/apr-util  --with-apr=/usr/local/apr

make

make install

cd /root

tar zxvf apache-tomcat-7.0.61.tar.gz

mv apache-tomcat-7.0.61 你项目的路径和名字

cd /你项目的路径和名字/bin

tar zxvf tomcat-native.tar.gz
cd tomcat-native-1.1.33-src/jni/native/
./configure --with-apr=/usr/local/apr
make
make install

vim 你项目的路径和名字/bin/catalina.sh　

JAVA_OPTS="-server -Xms2048m -Xmx2048m -XX:PermSize=256M -XX:MaxPermSize=512m  -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC  -XX:MaxGCPauseMillis=50 -XX:GCPauseIntervalMillis=200"

<Connector port="8999"
protocol="org.apache.coyote.http11.Http11AprProtocol"
executor="tomcatThreadPool"
compression="on"
compressionMinSize="2048"
maxThreads="30000"
minSpareThreads="50"
maxSpareThreads="200"
enableLookups="false"
redirectPort="8444"
acceptCount="35000"
debug="0"
connectionTimeout="40000"
disableUploadTimeout="true" URIEncoding="UTF-8" useBodyEncodingForURI="true" />
<!-- A "Connector" using the shared thread pool-->

在<Host name="localhost"  appBase="webapps"
unpackWARs="true" autoDeploy="true">下面增加

<Context path=""  docBase="你项目的路径和名字" />

vim context.xml
<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />

<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"

host="IP"

port="端口"

database="用的你个redis数据库，默认16个，自己指定"

maxInactiveInterval=""/>

<!-- Sentinel 配置 -->

<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />

<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"

maxInactiveInterval=""

sentinelMaster="mymaster"

sentinels="127.0.0.1:26379,127.0.0.1:26380,127.0.0.1:26381,127.0.0.1:26382"

/>