常青树 发表于 2019-1-31 13:45:06

fastdfs负载均衡

  环境:centos6.5
  tracker_server_1 ip:192.168.2.190tracker_server_2 ip:192.168.2.191
  storage_server_group1_1 ip: 192.168.2.192storage_server_group1_2 ip:192.168.2.193
  storage_server_group2_1 ip: 192.168.2.194storage_server_group2_2 ip:192.168.2.195
  第一部分六节点做时间同步
  #service iptables stop
  #yum install -y ntpdate
  #cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
  #ntpdate us.pool.ntp.org
  时间定时同步(6节点安装)
  #crontab -e
  输入以下代码,每10分钟同步一次
  */10 * * * * /usr/sbin/ntpdate us.pool.ntp.org | logger -t NTP
  第二部分六节点安装FastDFS_v5.05
  1、安装相关倚赖包并建立相关文件夹及权限设定
  #mkdir /main/soft
  所有相关软件上传至/main/soft/
  #yum -y install gcc gcc-c++ openssl openssl-devel pcre-devel perl unzip
  #/usr/sbin/groupadd www
  #/usr/sbin/useradd -s /sbin/nologin -M -g www www
  #mkdir -p /main/web/fdfs
  #chmod 777 /main/web/fdfs
  #mkdir /main/web/fdfs/storage
  #chown -R www:www /main/web/fdfs
  #chmod g+s /main/web/fdfs
  #mkdir -p /main/web/logs
  #chmod +w /main/web/logs
  #chown -R www:www /main/web/logs
  2、安装libfastcommon,FastDFS_v5.05依赖libfastcommon,不再依赖libevent
  #cd /main/soft/
  #unzip libfastcommon-master.zip
  #cd libfastcommon-master
  #./make.sh
  #./make.sh install
  libfastcommon.so默认安装到了/usr/lib64/libfastcommon.so,而FastDFS主程序设置的lib目录是/usr/local/lib,所以设置软连接
  #ln -s /usr/lib64/libfastcommon.so /usr/local/lib/libfastcommon.so
  #ln -s /usr/lib64/libfastcommon.so /usr/lib/libfastcommon.so
  #ln -s /usr/lib64/libfdfsclient.so /usr/local/lib/libfdfsclient.so
  #ln -s /usr/lib64/libfdfsclient.so /usr/lib/libfdfsclient.so
  3、安装fastdfs
  #cd /main/soft
  #tar -zxvf fastdfs-5.05.tar.gz
  #cd fastdfs-5.05/
  #./make.sh
  #./make.sh install
  第三部分二个tracker节点配置
  1、建立数据及日志目录
  #mkdir /main/web/fdfs/tracker
  2、拷贝及修改tracker配置文件
  #cp /etc/fdfs/tracker.conf.sample /etc/fdfs/tracker.conf
  #vi /etc/fdfs/tracker.conf
  一般只需改动以下几个参数即可:
  disabled=false             #启用配置文件
  port=22122               #设置tracker的端口号
  base_path=/main/web/fdfs/tracker    #设置tracker的数据文件和日志目录(需预先创建)
  http.server_port=8080          #设置http端口号
  3、启动并验证tracker节点
  #/usr/bin/fdfs_trackerd /etc/fdfs/tracker.conf
  #echo '/usr/bin/fdfs_trackerd /etc/fdfs/tracker.conf' >> /etc/rc.local
  启动tracker,确认启动是否成功。(查看是否对应端口22122是否开始监听)
  #netstat -unltp|grep fdfs
  也可查看tracker的日志是否启动成功或是否有错误。
  #cat /main/web/fdfs/tracker/logs/trackerd.log
  第四部分storage四节点配置
  1、防火墙设置
  端口开放
  #iptables -I INPUT -p tcp --dport 8080 -j ACCEPT
  #iptables -I INPUT -p tcp --dport 22122 -j ACCEPT
  #/etc/rc.d/init.d/iptables save
  2、拷贝及修改storage配置文件
  #cp /etc/fdfs/storage.conf.sample /etc/fdfs/storage.conf
  #vi /etc/fdfs/storage.conf
  一般只需改动以下几个参数即可:
  disabled=false             #启用配置文件
  group_name=group1         #组名,根据实际情况修改
  port=23000               #设置storage的端口号
  base_path=/main/web/fdfs/storage      #设置storage的日志目录(需预先创建)
  store_path_count=1         #存储路径个数,需要和store_path个数匹配
  store_path0=/main/web/fdfs/storage   #存储路径
  tracker_server=192.168.2.190:22122#tracker服务器的IP地址和端口号
  tracker_server=192.168.2.191:22122#tracker服务器的IP地址和端口号
  http.server_port=8080         #设置http端口号
  3、启动storage服务
  #/usr/bin/fdfs_storaged /etc/fdfs/storage.conf
  重启storage服务
  #/usr/bin/restart.sh/usr/bin/fdfs_storaged /etc/fdfs/storage.conf
  #cat /main/web/fdfs/storage/logs/storaged.log
  确认启动成功后,可以运行fdfs_monitor查看storage服务器是否已经登记到tracker服务器,特别注意每个group中所有storage的端口号必须一致
  #/usr/bin/fdfs_monitor /etc/fdfs/storage.conf
  第五部分storage四节点上安装NGINX,在storage上安装的nginx主要为了提供http的访问服务,同时解决group中storage服务器的同步延迟问题。(需要安装ngx_cache_purge-2.3.tar.gz)
  1、在storage server安装nginx模块
  #cd /main/soft/
  #tar -zxvf fastdfs-nginx-module_v1.16.tar.gz
  #vi /main/soft/fastdfs-nginx-module/src/config
  修改如下配置,我这里原来是
  CORE_INCS="$CORE_INCS /usr/local/include/fastdfs /usr/local/include/fastcommon/"
  改成
  CORE_INCS="$CORE_INCS /usr/include/fastdfs /usr/include/fastcommon/"
  这个是很重要的,不然在nginx编译的时候会报错的,我看网上很多在安装nginx的fastdfs的插件报错,都是这个原因,而不是版本不匹配。
  2、安装Nginx所需的pcre库
  #cd /main/soft
  #tar zxvf pcre-8.36.tar.gz
  #cd pcre-8.36/
  #./configure
  #make && make install
  3、安装nginx及修改配置
  #cd /main/soft/
  #tar -zxvf nginx-1.6.3.tar.gz
  #cd nginx-1.6.3
  #./configure --user=www --group=www --prefix=/main/server/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_sub_module --with-pcre=../pcre-8.36 --with-pcre-jit --add-module=../fastdfs-nginx-module/src
  #make && make install
  4、修改nginx配置
  #rm -rf /main/server/nginx/conf/nginx.conf
  #vi /main/server/nginx/conf/nginx.conf
  复制以下代码
  userwww www;
  worker_processes4;
  error_log/main/web/logs/nginx_error.logcrit;
  #error_loglogs/error.log;
  #error_loglogs/error.lognotice;
  #error_loglogs/error.loginfo;
  pid   logs/nginx.pid;
  events {
  use epoll;
  worker_connections 65535;
  }
  http{
  server_names_hash_bucket_size 128;
  client_header_buffer_size 32k;
  large_client_header_buffers 4 32k;
  client_max_body_size 300m;
  include    mime.types;
  default_typeapplication/octet-stream;
  sendfile   on;
  tcp_nopush   on;
  proxy_redirect off;
  proxy_connect_timeout 90;
  proxy_send_timeout 90;
  proxy_read_timeout 90;
  proxy_buffer_size 16k;
  proxy_buffers 4 64k;
  proxy_busy_buffers_size 128k;
  proxy_temp_file_write_size 128k;
  keepalive_timeout65;
  server {
  listen    8080;
  server_namelocalhost;
  #charset koi8-r;
  #access_loglogs/host.access.logmain;
  location~/group/M00{
  root /main/web/fdfs/storage/data;
  ngx_fastdfs_module;
  }
  }
  log_formataccess'$remote_addr - $remote_user [$time_local] "$request" '
  '$status $body_bytes_sent "$http_referer" '
  '"$http_user_agent" $http_x_forwarded_for';
  access_log/main/web/logs/access.logaccess;
  }
  5、复制fastdfs相关文件到配置目录并修改
  #cp /main/soft/fastdfs-5.05/conf/http.conf /etc/fdfs/
  #cp /main/soft/fastdfs-5.05/conf/mime.types /etc/fdfs/
  #cp /main/soft/fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs/mod_fastdfs.conf
  #vi /etc/fdfs/mod_fastdfs.conf
  一般只需改动以下几个参数即可:
  base_path=/main/web/fdfs/storage       #保存日志目录
  tracker_server=192.168.2.190:22122   #tracker服务器的IP地址以及端口号
  tracker_server=192.168.2.191:22122   #tracker服务器的IP地址以及端口号
  storage_server_port=23000         #storage服务器的端口号
  group_name=group1               #当前服务器的group名
  url_have_group_name= true         #文件url中是否有group名
  store_path_count=1            #存储路径个数,需要和store_path个数匹配
  store_path0=/main/web/fdfs/storage      #存储路径
  group_count= 2                #设置组的个数
  在末尾增加2个组的具体信息:
  
  group_name=group1
  storage_server_port=23000
  store_path_count=1
  store_path0=/main/web/fdfs/storage
  
  group_name=group2
  storage_server_port=23000
  store_path_count=1
  store_path0=/main/web/fdfs/storage
  6、给storage的存储目录做一个软连接
  # ln -s /main/web/fdfs/storage/data /main/web/fdfs/storage/data/M00
  7、编写nginx 启动服务
  #vi /etc/init.d/nginx
  输入以下代码并保存(4台storage服务器配置)
  #!/bin/sh
  #
  # nginx - this script starts and stops the nginx daemin
  #
  # chkconfig:- 85 15
  # description:Nginx is an HTTP(S) server, HTTP(S) reverse \
  #      proxy and IMAP/POP3 proxy server
  # processname: nginx
  # config:    /main/server/nginx/conf/nginx.conf
  # pidfile:   /main/server/nginx/logs/nginx.pid
  # Source function library.
  . /etc/rc.d/init.d/functions
  # Source networking configuration.
  . /etc/sysconfig/network
  # Check that networking is up.
  [ "$NETWORKING" = "no" ] && exit 0
  nginx="/main/server/nginx/sbin/nginx"
  prog=$(basename $nginx)
  NGINX_CONF_FILE="/main/server/nginx/conf/nginx.conf"
  lockfile=/var/lock/subsys/nginx
  start() {
  [ -x $nginx ] || exit 5
  [ -f $NGINX_CONF_FILE ] || exit 6
  echo -n $"Starting $prog: "
  daemon $nginx -c $NGINX_CONF_FILE
  retval=$?
  echo
  [ $retval -eq 0 ] && touch $lockfile
  return $retval
  }
  stop() {
  echo -n $"Stopping $prog: "
  killproc $prog -QUIT
  retval=$?
  echo
  [ $retval -eq 0 ] && rm -f $lockfile
  return $retval
  }
  restart() {
  configtest || return $?
  stop
  start
  }
  reload() {
  configtest || return $?
  echo -n $"Reloading $prog: "
  killproc $nginx -HUP
  RETVAL=$?
  echo
  }
  configtest() {
  $nginx -t -c $NGINX_CONF_FILE
  }
  rh_status() {
  status $prog
  }
  rh_status_q() {
  rh_status >/dev/null 2>&1
  }
  case "$1" in
  start)
  rh_status_q && exit 0
  $1
  ;;
  stop)
  rh_status_q || exit 0
  $1
  ;;
  restart|configtest)
  $1
  ;;
  reload)
  rh_status_q || exit 7
  $1
  ;;
  status)
  rh_status
  ;;
  *)
  echo $"Usage: $0 {start|stop|status|restart|reload|configtest}"
  exit 2
  esac
  保存后,设置权限并添加到启动服务列表中
  #chmod 755 /etc/init.d/nginx
  #chkconfig --add nginx
  #chkconfig --level 345 nginx on
  #service nginx start
  在error.log中没有错误,既启动成功。可以打开浏览器,直接访问http://192.168.2.192:8080,查看是否弹出nginx欢迎页面。
  第六部分tracker两节点上安装nginx,在tracker上安装的nginx主要为了提供http访问的反向代理、负载均衡以及缓存服务。
  1、建立相关文件夹
  #mkdir -p /main/web/cache/nginx/proxy_cache/tmp
  #chown -R www:www /main/web/cache
  #chmod g+s /main/web/cache
  #mkdir /etc/keepalived
  2、解压fastdfs-nginx-module模块
  #cd /main/soft/
  #tar -zxvf fastdfs-nginx-module_v1.16.tar.gz
  #vi /main/soft/fastdfs-nginx-module/src/config
  修改如下配置,我这里原来是
  CORE_INCS="$CORE_INCS /usr/local/include/fastdfs /usr/local/include/fastcommon/"
  改成
  CORE_INCS="$CORE_INCS /usr/include/fastdfs /usr/include/fastcommon/"
  这个是很重要的,不然在nginx编译的时候会报错的,我看网上很多在安装nginx的fastdfs的插件报错,都是这个原因,而不是版本不匹配。
  3、解压ngx_cache_purge模块
  #tar zxvf ngx_cache_purge-2.3.tar.gz
  4、安装Nginx所需的pcre库
  #tar zxvf pcre-8.36.tar.gz
  #cd pcre-8.36/
  #./configure
  #make && make install
  5、安装nginx及修改配置
  #cd /main/soft/
  #tar -zxvf nginx-1.6.3.tar.gz
  #cd nginx-1.6.3
  #./configure --user=www --group=www --prefix=/main/server/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_sub_module --with-pcre=../pcre-8.36 --with-pcre-jit --add-module=../fastdfs-nginx-module/src --add-module=../ngx_cache_purge-2.3
  #make && make install
  修改NGINX配置问文件:
  # rm -rf /main/server/nginx/conf/nginx.conf
  # vi /main/server/nginx/conf/nginx.conf
  复制如下配置文件:
  userwww www;
  worker_processes4;
  error_log/main/web/logs/nginx_error.logcrit;
  #error_loglogs/error.log;
  #error_loglogs/error.lognotice;
  #error_loglogs/error.loginfo;
  pid   logs/nginx.pid;
  events {
  use epoll;
  worker_connections 65535;
  }
  http{
  server_names_hash_bucket_size 128;
  client_header_buffer_size 32k;
  large_client_header_buffers 4 32k;
  client_max_body_size 300m;
  include    mime.types;
  default_typeapplication/octet-stream;
  sendfile   on;
  tcp_nopush   on;
  proxy_redirect off;
  proxy_connect_timeout 90;
  proxy_send_timeout 90;
  proxy_read_timeout 90;
  proxy_buffer_size 16k;
  proxy_buffers 4 64k;
  proxy_busy_buffers_size 128k;
  proxy_temp_file_write_size 128k;
  keepalive_timeout65;
  #设置缓存存储路径、存储方式、分配内存大小、磁盘最大空间、缓存期限
  proxy_cache_path/main/web/cache/nginx/proxy_cachelevels=1:2keys_zone=http-cache:500m max_size=10g inactive=30d;
  proxy_temp_path/main/web/cache/nginx/proxy_cache/tmp;
  #设置group1的服务器
  upstream fdfs_group1 {
  server 192.168.2.192:8080 weight=1 max_fails=2 fail_timeout=30s;
  server 192.168.2.193:8080 weight=1 max_fails=2 fail_timeout=30s;
  }
  #设置group2的服务器
  upstream fdfs_group2 {
  server 192.168.2.194:8080 weight=1 max_fails=2 fail_timeout=30s;
  server 192.168.2.195:8080 weight=1 max_fails=2 fail_timeout=30s;
  }
  server {
  listen    80;
  server_namelocalhost;
  #charset koi8-r;
  #access_loglogs/host.access.logmain;
  location /group1/M00{
  proxy_next_upstream http_502 http_504 error timeout invalid_header;
  proxy_cache_valid200 304 12h;
  proxy_cache_key $uri$is_args$args;
  proxy_pass http://fdfs_group1;
  expires 30d;
  }
  location /group2/M00 {
  proxy_next_upstream http_502 http_504 error timeout invalid_header;
  proxy_cache_valid200 304 12h;
  proxy_cache_key $uri$is_args$args;
  proxy_pass http://fdfs_group2;
  expires 30d;
  }
  location ~/purge(/.*) {
  allow 127.0.0.1;
  allow 192.168.2.0/24;
  deny all;
  }
  }
  log_formataccess'$remote_addr - $remote_user [$time_local] "$request" '
  '$status $body_bytes_sent "$http_referer" '
  '"$http_user_agent" $http_x_forwarded_for';
  access_log/main/web/logs/access.logaccess;
  }
  6、复制fastdfs相关文件到配置目录并修改
  #cp /main/soft/fastdfs-5.05/conf/http.conf /etc/fdfs/
  #cp /main/soft/fastdfs-5.05/conf/mime.types /etc/fdfs/
  #cp /main/soft/fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs/mod_fastdfs.conf
  #vi /etc/fdfs/mod_fastdfs.conf
  一般只需改动以下几个参数即可:
  base_path=/main/web/fdfs/storage       #保存日志目录
  tracker_server=192.168.2.190:22122   #tracker服务器的IP地址以及端口号
  tracker_server=192.168.2.191:22122   #tracker服务器的IP地址以及端口号
  storage_server_port=23000         #storage服务器的端口号
  group_name=group1               #当前服务器的group名
  url_have_group_name= true         #文件url中是否有group名
  store_path_count=1            #存储路径个数,需要和store_path个数匹配
  store_path0=/main/web/fdfs/storage      #存储路径
  group_count= 2                #设置组的个数
  在末尾增加2个组的具体信息:
  
  group_name=group1
  storage_server_port=23000
  store_path_count=1
  store_path0=/main/web/fdfs/storage
  
  group_name=group2
  storage_server_port=23000
  store_path_count=1
  store_path0=/main/web/fdfs/storage
  7、编写nginx 启动服务
  #vi /etc/init.d/nginx
  输入以下代码并保存
  #!/bin/sh
  #
  # nginx - this script starts and stops the nginx daemin
  #
  # chkconfig:- 85 15
  # description:Nginx is an HTTP(S) server, HTTP(S) reverse \
  #      proxy and IMAP/POP3 proxy server
  # processname: nginx
  # config:    /main/server/nginx/conf/nginx.conf
  # pidfile:   /main/server/nginx/logs/nginx.pid
  # Source function library.
  . /etc/rc.d/init.d/functions
  # Source networking configuration.
  . /etc/sysconfig/network
  # Check that networking is up.
  [ "$NETWORKING" = "no" ] && exit 0
  nginx="/main/server/nginx/sbin/nginx"
  prog=$(basename $nginx)
  NGINX_CONF_FILE="/main/server/nginx/conf/nginx.conf"
  lockfile=/var/lock/subsys/nginx
  start() {
  [ -x $nginx ] || exit 5
  [ -f $NGINX_CONF_FILE ] || exit 6
  echo -n $"Starting $prog: "
  daemon $nginx -c $NGINX_CONF_FILE
  retval=$?
  echo
  [ $retval -eq 0 ] && touch $lockfile
  return $retval
  }
  stop() {
  echo -n $"Stopping $prog: "
  killproc $prog -QUIT
  retval=$?
  echo
  [ $retval -eq 0 ] && rm -f $lockfile
  return $retval
  }
  restart() {
  configtest || return $?
  stop
  start
  }
  reload() {
  configtest || return $?
  echo -n $"Reloading $prog: "
  killproc $nginx -HUP
  RETVAL=$?
  echo
  }
  configtest() {
  $nginx -t -c $NGINX_CONF_FILE
  }
  rh_status() {
  status $prog
  }
  rh_status_q() {
  rh_status >/dev/null 2>&1
  }
  case "$1" in
  start)
  rh_status_q && exit 0
  $1
  ;;
  stop)
  rh_status_q || exit 0
  $1
  ;;
  restart|configtest)
  $1
  ;;
  reload)
  rh_status_q || exit 7
  $1
  ;;
  status)
  rh_status
  ;;
  *)
  echo $"Usage: $0 {start|stop|status|restart|reload|configtest}"
  exit 2
  esac
  8、保存后,设置权限并添加到启动服务列表中 (2台tracker服务器配置)
  #chmod 755 /etc/init.d/nginx
  #chkconfig --add nginx
  #chkconfig --level 345 nginx on
  #service nginx start
  第八部分tracker server两节点上配置client及测试
  1、第一个节点修改
  #cp /etc/fdfs/client.conf.sample /etc/fdfs/client.conf
  #vi /etc/fdfs/client.conf
  第一个及诶但修改以下参数:
  base_path=/main/web/fdfs/tracker      #日志存放路径
  tracker_server=192.168.2.190:22122      #tracker服务器IP地址和端口号
  http.tracker_server_port=8080         #tracker服务器的http端口号
  2、第二个节点修改
  #cp /etc/fdfs/client.conf.sample /etc/fdfs/client.conf
  #vi /etc/fdfs/client.conf
  第一个及诶但修改以下参数:
  base_path=/main/web/fdfs/tracker      #日志存放路径
  tracker_server=192.168.2.191:22122      #tracker服务器IP地址和端口号
  http.tracker_server_port=8080         #tracker服务器的http端口号
  3、创建测试文件
  #cd /main/
  #vi test.html
  hghghghg
  上传测试文件
  # /usr/bin/fdfs_test /etc/fdfs/client.conf upload test.html
  第九部分tracker server两节点上安装keepalived实现nginx的高可用
  1、keepalived安装
  安装keepalived-1.2.16
  #cd /main/soft
  #tar zxvf keepalived-1.2.16.tar.gz
  #cd keepalived-1.2.16
  #./configure --prefix=/main/server/keepalived
  #make && make install
  复制相关目录
  #复制keepalived启动文件到默认路径,也可以通过设置环境变量的path实现
  #cp /main/server/keepalived/sbin/keepalived /usr/sbin/
  #复制keepalived服务脚本到默认的地址,也通过修改init.d/keepalived文件中的相应配置实
  #cp /main/server/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
  #复制服务启动脚本到,以便可以通过service控制keepalived服务
  #cp /main/server/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
  设置权限并添加到启动服务列表中
  #chmod 755 /etc/init.d/keepalived
  #chkconfig --add keepalived
  #chkconfig --level 345 keepalived on
  2、创建nginx监控脚本
  #vi /main/server/nginx/conf/check_nginx.sh
  ##复制以下脚本
  #!/bin/bash
  A=`ps -C nginx –no-header|wc -l`
  if [ $A -eq 0 ];then
  /main/server/nginx/sbin/nginx
  sleep 3
  if [ `ps -C nginx --no-header|wc -l` -eq 0 ];then
  killall keepalived
  fi
  fi
  3、给nginx监控脚本赋予权限
  #chmod 755 /main/server/nginx/conf/check_nginx.sh
  4、编写配置文件
  主节点(10.1.11.31)创建keepalived配置文件
  #vi /etc/keepalived/keepalived.conf
  ##复制以下配置文件
  !Configuration File for keepalived
  global_defs {
  notification_email {
  jk@hgtech365.com
  }
  notification_email_from jk@hgtech365.com
  smtp_server 127.0.0.1
  smtp_connect_timeout 30
  router_id NGINX1_DEVEL
  }
  vrrp_script chk_nginx {
  script "/main/server/nginx/conf/check_nginx.sh"
  interval 2
  weight 2
  }
  vrrp_instance VI_1 {
  state MASTER
  nopreempt
  interface eth0
  virtual_router_id 31
  mcast_src_ip 192.168.2.190
  priority 150
  advert_int 1
  authentication {
  auth_type PASS
  auth_pass fds#FSAF897
  }
  virtual_ipaddress {
  192.168.2.196
  }
  track_script {
  chk_nginx
  }
  }
  5、备用节点(192.168.2.191)创建keepalived配置文件
  #vi /etc/keepalived/keepalived.conf
  ##复制以下配置文件
  ! Configuration File for keepalived
  global_defs {
  notification_email {
  jk@hgtech365.com
  }
  notification_email_from flb@flb41.com
  smtp_server 127.0.0.1
  smtp_connect_timeout 30
  router_id NGINX2_DEVEL
  }
  vrrp_script chk_nginx {
  script "/main/server/nginx/conf/check_nginx.sh"
  interval 2
  weight 2
  }
  vrrp_instance VI_1 {
  state BACKUP
  interface eth0
  virtual_router_id 31
  mcast_src_ip 192.168.2.191
  priority 100
  advert_int 1
  authentication {
  auth_type PASS
  auth_pass fds#FSAF897
  }
  virtual_ipaddress {
  192.168.2.196
  }
  track_script {
  chk_nginx
  }
  }
  5、保存配置文件后,启动keepalived服务
  #service keepalived start
  6、防火墙设置
  端口开放
  #iptables -I INPUT -p tcp --dport 80 -j ACCEPT
  #iptables -I INPUT 3 -p vrrp -j ACCEPT
  #/etc/rc.d/init.d/iptables save
  6、测试
  http://192.168.100.240

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