服务器集群自动切换网络节点
原创
#!/bin/bash
# 集群节点自动切换
# Define the list of IP addresses
ipList=( 10.1.1.8 10.1.1.13 )
failCount=0
failFlag=0
failMaxFlag=0
successCount=0
successMaxFlag=0
failMaxCount=5 # 稳定 5 次pin
successMaxCount=5 # 稳定 5 次pin
i=0
configDIR(){
if [ `id -un` != "root" ]
then
sudoc="sudo"
else
sudoc=""
fi
wwwconf=/datadisk/eisc/wwwconf/
$sudoc mkdir -p $wwwconf ; $sudoc rm -rf $wwwconf/*
xiangmuName=(
www work sou enchantment guzheng zhoubao gcc xibin
)
peizhi=" eisc.cn $ip 62000" # HOME
}
create_www_conf(){
echo "案例： eisc.cn 0.0.0.0 62000"
# read -p " 请输入三个参数：" peizhi
buff=( $peizhi )
yuming=${buff[0]}
# 前端域名，增加到nginx 消息头部
ip=${buff[1]}
# 后端服务器ip
portmin=${buff[2]}
portmin=$[portmin-1]
# 设置最小端口，后面网站按照顺序自动加1
declare -A port
port["www"]="62010"
port["work"]="62011"
port["sou"]="62012"
port["enchantment"]="62013"
port["guzheng"]="62014"
port["zhoubao"]="62015"
port["gcc"]="62016"
port["xibin"]="62100"
cd $wwwconf; sudo chmod 777 -R $wwwconf $wwwconf/*
if [ ! -e eiscwwwconf.tar.gz ]
then
$sudoc tar -czvf eiscwwwconf.tar.gz *
$sudoc rm -rf `ls | grep -v eiscwwwconf.tar.gz`
fi
$sudoc rm -rf `ls | grep -v eiscwwwconf.tar.gz`
# file=(`ls $www | grep -vE "ssl|wwwconf|wwwroot|*.sh"`)
file=${xiangmuName[*]}
for i in ${file[*]}
do
((a++))
b=$[portmin+a] ; portlist[$c]=$b ; ((c++))
# 打印一次变量，接收一个元素存入数组： portlist
if [ ! -e $www/$i/cgi-bin ]
then
sudo mkdir $www/$i/cgi-bin
fi
case $i in
"www") b=${port[www]} ; echo "#------- www 被手动指定固定端口 $b -------#" ;;
"work") b=${port[work]} ; echo "#------- work 被手动指定固定端口 $b -------#" ;;
"sou") b=${port[sou]} ; echo "#------- sou 被手动指定固定端口 $b -------#";;
"enchantment") b=${port[enchantment]} ; echo "#------- enchantment 被手动指定固定端口 $b -------#";;
"guzheng") b=${port[guzheng]} ; echo "#------- guzheng 被手动指定固定端口 $b -------#";;
"zhoubao") b=${port[zhoubao]} ; echo "#------- zhoubao 被手动指定固定端口 $b -------#";;
"gcc") b=${port[gcc]} ; echo "#------- zhoubao 被手动指定固定端口 $b -------#";;
"xibin") b=${port[xibin]} ; echo "#------- xibin 被手动指定固定端口 $b -------#";;
esac
echo " $i 创建web网站 的端口： $b 前端域名 + $i.$yuming + 后端ip port + $ip:$b + c++ cgi 解析目录： $i/cgi-bin"
echo " $i 创建web网站 的端口： $b 前端域名 + $i.$yuming + 后端ip port + $ip:$b + c++ cgi 解析目录： $i/cgi-bin" >> log_www_conf.txt
#--------- 生成前端转发 子站点文件 -----------#
$sudoc mkdir -p $wwwconf/nginxzhuanfa ; $sudoc chmod 777 $wwwconf/nginxzhuanfa
echo "
server{
listen 80;
server_name $i.$yuming;
location / {
proxy_pass http://$ip:$b;
#---- 记录 IP 地址 ----#
proxy_redirect off;
proxy_set_header Host \$http_host;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
}
}
" > $wwwconf/nginxzhuanfa/$i-$b.conf
if [ "$i" = "www" ]
then
echo "
server{
listen 80;
server_name $i.$yuming $yuming;
location / {
proxy_pass http://$ip:$b;
#---- 记录 IP 地址 ----#
proxy_redirect off;
proxy_set_header Host \$http_host;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
}
}
" > $wwwconf/nginxzhuanfa/$i-$b.conf
fi
if [ "$i" = "gcc" ]
then
echo "
server{
listen 80;
server_name www.okgcc.cn okgcc.cn;
location / {
proxy_pass http://$ip:$b;
#---- 记录 IP 地址 ----#
proxy_redirect off;
proxy_set_header Host \$http_host;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
}
}
" > $wwwconf/nginxzhuanfa/$i-$b.conf
fi
#---------- 端口对端口 ----------#
$sudoc mkdir -p $wwwconf/portconf ; $sudoc chmod 777 $wwwconf/portconf
echo "
server{
listen $b;
location / {
proxy_pass http://$ip:$b;
#---- 记录 IP 地址 ----#
proxy_redirect off;
proxy_set_header Host \$http_host;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
}
}
" > $wwwconf/portconf/$i-$b.conf
if [ "$i" = "www" ]
then
echo "
server{
listen $b;
location / {
proxy_pass http://$ip:$b;
}
}
" > $wwwconf/portconf/$i-$b.conf
fi
if [ "$i" = "gcc" ]
then
echo "
server{
listen $b;
location / {
proxy_pass http://$ip:$b;
}
}
" > $wwwconf/portconf/$i-$b.conf
fi
#---------- 后端转发子站点 ----------#
echo "
server {
listen $b;
root $www/$i;
index index.php index.html index.htm index;
add_header 'yuming is ' '$i.$yuming';
add_header 'ipport is ' '$ip:$b';
location ~ \.php {
# fastcgi_pass unix:/var/run/php-fpm811.sock;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
include fastcgi_params;
}
location /cgi-bin {
fastcgi_pass unix:/var/run/fcgiwrap.socket;
include fastcgi.conf;
}
}
" > $wwwconf/$b.$i.conf
done
echo "[ok]创建网站日志存放在： $wwwconf/log_www_conf.txt"
echo "[ok]前端转发 nginx 子文件目录： $wwwconf/nginxzhuanfa"
sudo nginx -s reload
}
MainNginxconf()
{
echo "[ok] 通讯正常,正在切换到节点 ip= $ip" ; sleep 10
configDIR
create_www_conf
}
# Main function
main() {
local initFlag=1
while true; do
for ip in ${ipList[*]}
do
failCount=0
successCount=0
for((;;))
do
ping -c1 -W1 $ip | grep from > /dev/null
if [ $? -ne 0 ]; then # 0 正常; -ne 不等于0
failFlag=1
else
failFlag=0
sleep 0.2
fi
echo "Checking network status for $ip failFlag=$failFlag failCount=$failCount successMaxFlag=$successMaxFlag successCount=$successCount"
if [ $failFlag -eq 1 ]; then
((failCount++))
fi
if [ $failFlag -eq 0 ]; then
((successCount++))
fi
if [ $failCount -gt $failMaxCount ]; then
failMaxFlag=1
successCount=0
successMaxFlag=0
break
else
failMaxFlag=0
fi
if [ $successCount -gt $successMaxCount ]; then
successMaxFlag=1;
failCount=0
failMaxFlag=0
break
else
successMaxFlag=0;
fi
done
if [ $successCount -gt $successMaxCount ]; then
break
fi
done
if [ $successMaxFlag -eq 1 ];then
MainNginxconf
fi
done
}
main
# 一键下载： wget ddoss.cn/file/ubuntu/shell/server/grouphost.sh
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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