Tomcat用于发布JSP Web页面，根据企业实际需求，会在单台服务器配置N个Tomcat实例，同时手动将Tomcat创建后的实例加入至Nginx虚拟主机中，同时重启Nginx,开发Nginx、Tomcat自动创建Tomcat实例及Nginx虚拟机管理脚本能大大减轻人工的干预，实现快速交付。
本篇shell脚本实现Nginx自动安装、虚拟主机及自动将Tomcat加入虚拟机，实现思路如下：
1、手动拷贝Tomcat与脚本一致的目录（可自行修改）；
2、手动修改Tomcat端口为6001、7001、8001（可自行修改）；
3、脚本指定参数为v1.example.com；
4、创建v1.example.com Tomcat实例；
5、修改Tomcat实例端口，保证Port唯一；
6、将Tomcat实例加入Nginx虚拟机；
7、重复创建Tomcat实例，端口自动增加，并加入原Nginx虚拟主机，实现负载均衡；
具体实现脚本如下：
#!/bin/bash
#Auto config Nginx and tomcat cluster
#By author falnet
#Define Path variables
NGINX_CONF="/usr/local/nginx/conf"
install_nginx(){
NGINX_FILE=nginx-1.16.0.tar.gz
NGINX_DIR='echo $NGINX_FILE|sed 's/.tar.*//g''
wget -c http://nginx.org/download/$NGINX_FILE
yum install pcre-devel pcre -y
rm -rf $NGINX_DIR; tar xf $NGINX_FILE
cd $NGINX_DIR; useradd www; ./configure --user=www --group=www --prefix=/usr/local/nginx2 --with-http_stub_status_module --with-http_ssl_module
make && make install
cd ../
}
install_tomcat(){
JDK_FILE="jdk1.7.0_25.tar.gz"
JDK_DIR='echo $JDK_FILE|sed 's/.tar.*//g''
tar -xzf $JDK_FILE ; mkdir -p /usr/java/ ; mv $JDK_DIR /usr/java/
sed -i '/JAVA_HOME/d; /JAVA_BIN/d; /JAVA_OPTS/d' /etc/profile
cat>> /etc/profile <<EOF
export JAVA_HOME=/export/servers/$JAVA_DIR
export JAVA_BIN=/export/servers/$JAVA_DIR/bin
export PATH=\$JAVA_HOME/bin:\$PATH
export CLASSPATH=.:\$JAVA_HOME/lib/dt.jar:\$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH
EOF
source /etc/profile; java -version
#install tomcat start
ls tomcat
}
config_tomcat_nginx(){
#config tomcat nginx vhost
grep " include domains" $NGINX_CONF/nginx.conf >>/dev/null 2>&1
if [ $? -ne 0 ]; then
sed -i '$d' $NGINX_CONF/nginx.conf
echo -e "\n include domains/*; \n}" >>$NGINX_CONF/nginx.conf
mkdir -p $NGINX_CONF/domains/
fi
VHOSTS=$1
NUM='ls /usr/local/|grep -c tomcat'
if [ $NUM -eq 0 ]; then
cp -r tomcat /usr/local/tomcat_$VHOSTS
cp -r xxx.example.com $NGINX_CONF/domains/$VHOSTS
#sed -i "s/VHOSTS/$VHOSTS/g" $NGINX_CONF/domains/$VHOSTS
sed -i "s/xxx/$VHOSTS/g" $NGINX_CONF/domains/$VHOSTS
exit 0
fi
#......................................................................................
#VHOSTS=$1
VHOSTS_NUM='ls $NGINX_CONF/domains/|grep -c $VHOSTS'
SERVER_NUM='grep -c "127" $NGINX_CONF/domains/$VHOSTS'
SERVER_NUM_1 ='expr $SERVER_NUM + 1'
rm -rf /tmp/.port.txt
for i in 'find /usr/local/ -maxdepth 1 - name "tomcat"'; do
grep "port" $i/conf/server.xml | e grep -v "\--|8080||SSL Enabled"|awk '{print $2}'|sed 's/port=//g; s/\"//g'|sort -nr >>/tmp/.port.txt
done
MAX_PORT='cat /tmp/.port.txt|grep -v 8443|sort -nr|head -1'
PORT_1='expr $MAX_PORT - 2000 + 1'
PORT_2='expr $MAX_PORT - 1000 + 1'
PORT_3='expr $MAX_PORT + 1'
if [ $VHOSTS_NUM -eq 1 ]; then
read -p "The $VHOSTS is exists, You sure create mulit Tomcat for the $VHOSTS? yes or no " INPUT
if [ $INPUT == "YES" -o $INPUT == "Y" -o $INPUT == "yes" ]; then
cp -r tomcat /usr/local/tomcat_${VHOSTS}_${SERVER_NUM_1}
sed -i "s/6001/$PORT_1/g"
/usr/local/tomcat_${VHOSTS}_${SERVER_NUM_1}/conf/server.xml
sed -i "s/7001/$PORT_2/g"
/usr/local/tomcat_${VHOSTS}_${SERVER_NUM_1}/conf/server.xml
sed -i "s/8001/$PORT_3/g"
/usr/local/tomcat_${VHOSTS}_${SERVER_NUM_1}/conf/server.xml
sed -i "/^upstream/a server 127.0.0.1:${PORT_2} weight=1 max_fails=2 fail_timeout=30s; " $NGINX_CONF/domains/$VHOSTS
exit 0
fi
exit
fi
cp -r tomcat /usr/local/tomcat_$VHOSTS
cp -r xxx.example.com $NGINX_CONF/domains/$VHOSTS
sed -i "s/VHOSTS/$VHOSTS/g" $NGINX_CONF/domains/$VHOSTS
sed -i "s/xxx/$VHOSTS/g" $NGINX_CONF/domains/$VHOSTS
sed -i "s/7001/${PORT_2}/g" $NGINX_CONF/domains/$VHOSTS
##########config tomcat
sed -i "s/6001/$PORT_1/g" /usr/local/tomcat_${VHOSTS}/conf/server.xml
sed -i "s/7001/$PORT_2/g" /usr/local/tomcat_${VHOSTS}/conf/server.xml
sed -i "s/8001/$PORT_3/g" /usr/local/tomcat_${VHOSTS}/conf/server.xml
}
if [ ! -d $NGINX_CONF -o ! -d /usr/java/$JDK_DIR]; then
install_nginx
install_tomcat
fi
config_tomcat_nginx $1
