Using Haproxy to implement view connction load balancing

1. Install the required service process first:

#yum ‐y Install Haproxy keepalived

2. Edit the keeoalived configuration file

[[email protected] ~]# cat /etc/keepalived/keepalived.conf global_defs {     notification_email {      keepalived     }    notification_email_from [email protected]    smtp _server 192.168.1.200    smtp_connect_timeout 30    router_ id 10.10.1.222}vrrp_script chk_haproxy {script  "Killall -0 haproxy" interval  1                      #  Monitor if Haproxy is alive in this machine weight 2                       }vrrp_instance vi_1  {interface eth0                      #虚拟ip绑定在本机的eth0网卡上state  MASTERsmtp_alertvirtual_router_id 51priority 101                    #  101  is  master priority, 100  is  slaves priority advert_int 1      authentication {         auth_type pass          auth_pass 1111     }virtual_ipaddress  {         10.10.1.222          #虚拟IP}track_script {chk_haproxy}}

3. Allow keepalied virtual IP bindings, edit/etc/sysctl.conf configuration file

Net.ipv4.ip_nonlocal_bind = 1

4. Configure the Firewall

Accept packages for VRRP broadcast domains

Iptables‐i input‐d 224.0.0.0/8‐j ACCEPT

Adding rules for the VRRP protocol

Iptables‐i input‐p 112‐j ACCEPT

Open 80 and 443 ports

Iptables‐i input‐p tcp‐‐dport 80‐j acceptiptables‐i input‐p tcp‐‐dport 443‐j acceptservice iptables Save

5. Edit the Haproxy configuration file:

---------------------------------------------------------------# global settings#------------------- --------------------------------------------------Global    # to have these  messages end up in /var/log/haproxy.log you will    #  NEED TO:    #    # 1)  configure syslog  to accept network log events.  this is done    #     by adding the  '-R '  option to the syslogd_options  in    #    /etc/sysconfig/syslog    #     # 2)  configure local2 events to go to the /var/ log/haproxy.log    #   file. a line like the  Following can be added to    #   /etc/sysconfig/syslog     #    #    local2.*                        /var/log/ haproxy.log    #    log          127.0.0.1 local2    chroot      /var/lib/ haproxy    pidfile     /var/run/haproxy.pid     maxconn     4000    user         haproxy    group       haproxy     daemon    # turn on stats unix socket     stats socket /var/lib/haproxy/stats#---------------------------------------------------------------------# common  defaults that all the  ' Listen '  and  ' backend '  sections will# use  if not designated in their block#---------------------------------------------- -----------------------defaults    mode                     http    log                       global    option                   httplog    option                   dontlognull     option httP-server-close    option forwardfor       except  127.0.0.0/8    option                   redispatch    retries                  3     timeout http-request    10s    timeout queue            1m    timeout connect          10s    timeout client           1m    timeout server           1m    timeout http-keep-alive  10s    timeout&nbsP;check           10s    maxconn                  3000    stats refresh 30s                      stats uri  /stats            stats realm welcome         stats auth admin:dragon123           stats hide-version  #-------------------------------------------------------------- -------# main frontend which proxys to the backends#----------------------- ----------------------------------------------#frontend   main *:5000#     Acl url_static &nbsP;     path_beg       -i /static /images  /javascript /stylesh#    acl url_static        path_end       -i .jpg .gif .png .css  .js# #   use_backend static           if url_static  #  default_backend              app#---------------------------------------------------------------------#  static backend for serving up images, stylesheets and such#----- ----------------------------------------------------------------#backend  static#     balance     roundrobin#    server       static 127.0.0.1:4331 check#---------------------------------------------------------------------# round robin  balancing between the various backends#--------------------------------------------- ------------------------#backend  app #   balance      roundrobin #   server  app1 127.0.0.1:5001 check#     server  app2 127.0.0.1:5002 check#    server  app3  127.0.0.1:5003 check#    server  app4 127.0.0.1:5004 check# frontend unsecuredbind 10.10.1.222:80redirect location https://view.domain.local#--------- ------------------------------------------------------------# frontend secured#--------------------- ------------------------------------------------frontend securedbind 10.10.1.222:443  #ssl   Crt ./haproxy-cert.pemmode tcpdefault_backend view#-------------------------------------------------------------------- -# balancing between the various backends#------------------------------------------- --------------------------backend viewmode tcpbalance sourceserver view01  10.10.1.38:443 weight 1 check port 443 inter 2000 rise 2  Fall 5server view02 10.10.1.36:443 weight 1 check port 443 inter  2000 rise 2 fall 5

6. Open the service:

Chkconfig haproxy onchkconfig keepalived onservice haproxy startservice keepalived start

View Virtual IP

IP addr sh eth0

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/6F/4B/wKioL1WX32ezsqahAAEW_6Fg5d0163.jpg "title=" Xuniip.png "alt=" Wkiol1wx32ezsqahaaew_6fg5d0163.jpg "/>

Connecting Virtual IP

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/6F/4B/wKioL1WX4GmjtOIgAACDSq4cIrw378.jpg "title=" 111. PNG "alt=" wkiol1wx4gmjtoigaacdsq4cirw378.jpg "/>

Verify Password

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/6F/4E/wKiom1WX3rrT4bhxAADVnbO12Mc826.jpg "title=" 222. PNG "alt=" wkiom1wx3rrt4bhxaadvnbo12mc826.jpg "/>

To view scheduling conditions:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/6F/4E/wKiom1WX3j2iIgkQAAGTaRv2KS8920.jpg "title=" Check.png "alt=" Wkiom1wx3j2iigkqaagtarv2ks8920.jpg "/>

Using Haproxy to implement view connction load balancing