Centos Keepalived-Ha集群+Lvs-DR+Nginx集群配置

發布時間：2020-07-06 06:46:39 來源：網絡閱讀：505 作者：步荀仙欄目：建站服務器

背景介紹

我們都知道一臺服務器能提供的資源是有限的，如果想打破這個限制，只有兩個辦法，一個是購買硬件，提升服務器性能，但是性價比過高，而第二種方法這則是，使用集群軟件讓兩臺服務器處理一個服務的不同請求，分帶單臺服務器的負載，從而提升性能，實現這一的軟件開源著名的有Nginx或者Lvs，這里我們使用的是LVS，但是lvs需要一個調度服務器，這樣調度服務器就是一個集訓的單點故障，一旦調度服務器出現故障，整個集群便崩潰，所以我們需要兩臺調度節點，一旦一個調度節點損壞，那么另一臺調度節點開始工作，這里我們使用Keepalived開源軟件實現調度器的高可用。

邏輯圖介紹

1.用戶在訪問Nginx的時候，先通過VIP訪問Master1，由Master指定那個real-server提供服務

2.在Master通過lvs-Dr指定的算法選定由Nginx1來提供服務，那么數據在通過VIP發送到Nginx1上

3.Nginx處理完請求后，在通過自身的VIP將處理后的請求直接發送給User

注明：

如果Master出現故障，那么Baskup將替代Master工作

如果Nginx1出現故障，那么Nginx2將提點Nginx1工作

如果Nginx1沒有出現故障，那么LVS服務使用算法會將請求平均到Nginx1和Nginx2上

如果兩臺Nginx同時出現故障，那么Master會提供Sorry Server服務

Centos Keepalived-Ha集群+Lvs-DR+Nginx集群配置

物理拓撲圖及環境介紹

服務器：使用虛擬機虛擬4套服務器

操作系統：CentOS7.3

HA軟件/LVs軟件：keepalived

Web軟件：Nginx

IP及主機名配置

VIP：172.18.17.30

Master：

主機名：shiyan7.one

IP地址：172.18.17.31

Backup

主機名：shiyan7.fore

IP地址：172.18.17.34

Nginx1

主機名：shiyan7.two

IP地址：172.18.17.34

Nginx2

主機名：shiyan7.thy

IP地址：172.18.17.34

4臺服務器初始化配置

同步時間服務

    #Master配置NTP服務器
     [root@shiyan7 ~ ]# vim /etc/ntp.conf
       restrict 172.18.17.0 mask 255.255.0.0 nomodify notrap
       server 127.127.1.0
       fudge 127.1.1.0 stratum 8
    [root@shiyan7 ~ ]# ntpdate 172.18.17.31

關閉Selinux

     [root@shiyan7 ~ ]# vim /etc/selinux/config
       SELINUX=disabled

關閉防火墻

     [root@shiyan7 ~ ]# systemctl stop firewalld
     [root@shiyan7 ~ ]# systemctl disable firewalld
      [root@shiyan7 ~ ]# iptables -F

主機名解析配置

      [root@shiyan7 ~ ]# cat /etc/hosts
            127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
            ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
            172.18.17.34 shiyan.fore
            172.18.17.31 shiyan.one
            172.18.17.32 shiyan7.two
            172.18.17.33 shiyan7.thy

Master/Backup初始化配置

安裝KeepAlived、Nginx軟件

      [root@shiyan7 ~ ]# yum install keepalived nginx ipvsadm

Nginx1/2初始化配置

安裝Nginx軟件

      [root@shiyan7 ~ ]# yum install nginx
      #這里配置一個配置VIP及更改內核參數的腳本。
            [root@shiyan7 ~ ]# touch roush.sh
            [root@shiyan7 ~ ]# chmod +x roush.sh
            [root@shiyan7 ~ ]# vim roush.sh
                #!/bin/bash    
                #
                
                vip="172.18.17.30"
                netmask="255.255.255.255"
                iface="lo:0"
                
                case $1 in
                start)
                        echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
                        echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
                        echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
                        echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
                        ifconfig $iface $vip netmask $netmask broadcast $vip up
                        route add -host $vip dev $iface
                        ;;
                stop)
                        ifconfig $iface down
                        echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
                        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
                        echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
                        echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
                        ;;
                esac

Ngxin1配置

     [root@shiyan7 ~ ]# ./roush.sh start
    [root@shiyan7 ~ ]# mkdir /app/nginx/html
    [root@shiyan7 ~ ]#  echo "<h2>RS1:172.18.17.32</h2>" > /app/nginx/html/index.html
    [root@shiyan7 ~ ]#  cp /etc/nginx/nginx/conf{,.bak}#備份原文件
    [root@shiyan7 ~ ]#  vim /etc/nginx/nginx/conf
            server {
            listen       80 default_server;
            listen       [::]:80 default_server;
            server_name  _;
            root         /app/nginx/html;#修改root這里的路徑，其他不需要
            # Load configuration files for the default server block.
            include /etc/nginx/default.d/*.conf;
    
            location / {
            }
    
            error_page 404 /404.html;
                location = /40x.html {
            }
    
            error_page 500 502 503 504 /50x.html;
                
            }
    [root@shiyan7 ~ ]# systemctl start nginx
    #測試Nginx服務
    [root@yum ~ ]# curl http://172.18.17.33
    <h2>RS1:172.18.17.33</h2>

Ngxin2配置

     [root@shiyan7 ~ ]# ./roush.sh start
    [root@shiyan7 ~ ]# mkdir /app/nginx/html
    [root@shiyan7 ~ ]#  echo "<h2>RS1:172.18.17.33</h2>" > /app/nginx/html/index.html
    [root@shiyan7 ~ ]#  cp /etc/nginx/nginx/conf{,.bak}#備份原文件
    [root@shiyan7 ~ ]#  vim /etc/nginx/nginx/conf
            server {
            listen       80 default_server;
            listen       [::]:80 default_server;
            server_name  _;
            root         /app/nginx/html;#修改root這里的路徑，其他不需要
            # Load configuration files for the default server block.
            include /etc/nginx/default.d/*.conf;
    
            location / {
            }
    
            error_page 404 /404.html;
                location = /40x.html {
            }
    
            error_page 500 502 503 504 /50x.html;
                
            }
    [root@shiyan7 ~ ]# systemctl start nginx
    #測試Nginx服務
    [root@yum ~ ]# curl http://172.18.17.34
    <h2>RS1:172.18.17.34</h2>

Master上的配置

    #配置Nginx1-Sorry Server
    [root@shiyan7 ~ ]# mkdir /app/nginx/html
    [root@shiyan7 ~ ]#  echo "Sorry server-1" > /app/nginx/html/index.html
    [root@shiyan7 ~ ]#  cp /etc/nginx/nginx/conf{,.bak}#備份原文件
    [root@shiyan7 ~ ]#  vim /etc/nginx/nginx/conf
        server {
            listen       80 default_server;
            listen       [::]:80 default_server;
            server_name  _;
            root         /app/nginx/html;#修改root這里的路徑，其他不需要
            # Load configuration files for the default server block.
            include /etc/nginx/default.d/*.conf;
    
            location / {
            }
    
            error_page 404 /404.html;
                location = /40x.html {
            }
    
            error_page 500 502 503 504 /50x.html;
                
            }
    [root@shiyan7 ~ ]# systemctl start nginx
    #測試Nginx1-Sorry Server
    [root@yum ~ ]# curl http://172.18.17.31
        Sorry server-1
        
    #配置Keepalived服務
    [root@shiyan7 ~ ]# cp /etc/keepalived/keepalived.conf{,.bak}
    [root@shiyan7 ~ ]# vim /etc/keepalived/keepalived.conf
            vrrp_instance Ha_1 {
            state MASTER
            interface ens33
            virtual_router_id 51
            priority 100
            advert_int 1
            authentication {
                auth_type PASS
                auth_pass 1111
            }
            virtual_ipaddress {
                172.18.17.30/16 dev ens33
            }
        }
        
        virtual_server 172.18.17.30 80 {
            delay_loop 6
            lb_algo lc
            lb_kind DR
            persistence_timeout 50
            protocol TCP
            sorry_server 172.18.17.31 80
            
            real_server 172.18.17.32 80 {
               weight 1
                HTTP_GET {
                    url {
                      path /
                        status_code 200
                    }
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                }
        }
            real_server 172.18.17.33 80 {
                weight 1
                HTTP_GET {
                    url {
                      path /
                        status_code 200
                    }
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                }
            }
        }
    [root@shiyan7 ~ ]#systemctl start keepalived
    #查看配置是否成功
    [root@shiyan7 ~ ]# ip a l
        2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
        link/ether 00:0c:29:1b:f5:ae brd ff:ff:ff:ff:ff:ff
        inet 172.18.17.31/16 brd 172.18.255.255 scope global ens33
           valid_lft forever preferred_lft forever
        inet 172.18.17.30/16 scope global secondary ens33
           valid_lft forever preferred_lft forever
        [root@shiyan7 ~ ]# ipvsadm -ln
            IP Virtual Server version 1.2.1 (size=4096)
            Prot LocalAddress:Port Scheduler Flags
              -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
            TCP  172.18.17.30:80 lc persistent 50
              -> 172.18.17.32:80              Route   1      0          0         
              -> 172.18.17.33:80              Route   1      0          0

Backup上的配置

    #配置Nginx1-Sorry Server
    [root@shiyan7 ~ ]# mkdir /app/nginx/html
    [root@shiyan7 ~ ]#  echo "Sorry server-2" > /app/nginx/html/index.html
    [root@shiyan7 ~ ]#  cp /etc/nginx/nginx/conf{,.bak}#備份原文件
    [root@shiyan7 ~ ]#  vim /etc/nginx/nginx/conf
        server {
            listen       80 default_server;
            listen       [::]:80 default_server;
            server_name  _;
            root         /app/nginx/html;#修改root這里的路徑，其他不需要
            # Load configuration files for the default server block.
            include /etc/nginx/default.d/*.conf;
    
            location / {
            }
    
            error_page 404 /404.html;
                location = /40x.html {
            }
    
            error_page 500 502 503 504 /50x.html;
                
            }
    [root@shiyan7 ~ ]# systemctl start nginx
    #測試Nginx1-Sorry Server
    [root@yum ~ ]# curl http://172.18.17.34
        Sorry server-2
        
    #配置Keepalived服務
    [root@shiyan7 ~ ]# cp /etc/keepalived/keepalived.conf{,.bak}
    [root@shiyan7 ~ ]# vim /etc/keepalived/keepalived.conf
            vrrp_instance Ha_1 {
            state MASTER
            interface ens33
            virtual_router_id 51
            priority 100
            advert_int 1
            authentication {
                auth_type PASS
                auth_pass 1111
            }
            virtual_ipaddress {
                172.18.17.30/16 dev ens33
            }
        }
        
        virtual_server 172.18.17.30 80 {
            delay_loop 6
            lb_algo lc
            lb_kind DR
            persistence_timeout 50
            protocol TCP
            sorry_server 172.18.17.32 80
            
            real_server 172.18.17.32 80 {
               weight 1
                HTTP_GET {
                    url {
                      path /
                        status_code 200
                    }
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                }
        }
            real_server 172.18.17.33 80 {
                weight 1
                HTTP_GET {
                    url {
                      path /
                        status_code 200
                    }
                    connect_timeout 3
                    nb_get_retry 3
                    delay_before_retry 3
                }
            }
        }
    [root@shiyan7 ~ ]#systemctl start keepalived
        [root@shiyan7 ~ ]# ip a l
                2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
            link/ether 00:0c:29:1b:f5:ae brd ff:ff:ff:ff:ff:ff
            inet 172.18.17.34/16 brd 172.18.255.255 scope global ens33
               valid_lft forever preferred_lft forever
               #這里是Baskup服務所以不會有VIP地址
        [root@shiyan7 ~ ]# ipvsadm -ln
            IP Virtual Server version 1.2.1 (size=4096)
            Prot LocalAddress:Port Scheduler Flags
              -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
            TCP  172.18.17.30:80 lc persistent 50
              -> 172.18.17.32:80              Route   1      0          0         
              -> 172.18.17.33:80              Route   1      0          0

測試服務

#正常測試
[root@yum ~ ]# curl http://172.18.17.30
    <h2>RS1:172.18.17.32</h2>
    
[root@yum ~ ]# curl http://172.18.17.30
    <h2>RS1:172.18.17.34</h2>
    
#關閉Nginx1測試
[root@yum ~ ]# curl http://172.18.17.30
    <h2>RS1:172.18.17.33</h2>
    
#關閉所有Nginx服務測試
[root@yum ~ ]# curl http://172.18.17.30
Sorry server-1

#關閉Master測試
[root@yum ~ ]# curl http://172.18.17.30
Sorry server-2

向AI問一下細節

91超碰碰碰碰久久久久久综合_超碰av人澡人澡人澡人澡人掠_国产黄大片在线观看画质优化_txt小说免费全本

Centos Keepalived-Ha集群+Lvs-DR+Nginx集群配置

猜你喜歡

91超碰碰碰碰久久久久久综合_超碰av人澡人澡人澡人澡人掠_国产黄大片在线观看画质优化_txt小说免费全本

Centos Keepalived-Ha集群+Lvs-DR+Nginx集群配置

猜你喜歡

最新資訊

相關推薦

相關標簽