f5 firewall load balancing

Although LVS implements load balancing, it cannot solve a serious problem. When a RealServer is on the machine, it cannot direct subsequent requests allocated to the server to other surviving servers. $ Sudo apt-get install ipvsadm keepalivedYou can directly modify keepalived. conf without configuring ipvsadm. $ Sudo vim/etc/keepalived. conf Global_defs {Router_id LVS_DEVEL} Vrrp_instance VI_1 {State MASTER

script must be executed on both realservers.5. Use keepalvied to achieve load balancing and high availability Vim/etc/keepalived. conf ! Configuration file for keepalivedGlobal_defs {Notification_email {[Email protected]}Notification_email_from [email protected]Smtp_server 127.0.0.1Router_id lvs_devel}Vrrp_instance vi_1 {State master # change master to backup on the backup serverInterface eth0Virtual_route

The principle of using nginx to complete this task is roughly the same, but nginx can only perform load balancing on http and mail, which is quite limited, but it supports regular expressions well! The following describes the experiment: [Lab environment]Nginx keepalived master: 192.168.56.120nginx keepalived slave: 192.168.56.121VIP: 192.168.56.130Web1: 192.168.56.113 Web2: 192.168.56.114 [Experiment topo

Tags: outer netstat bind stat Code load Blog backend service textHttp://www.cnblogs.com/tae44/p/4717334.html Experimental system: CentOS 6.6_x86_64 (2.6.32-504.30.3.el6.x86_64) Lab Prerequisites: Firewall and SELinux are off The experiment shows that there are 4 hosts in this experiment, such as the topology of IP assignment Experimental software: keepalived-1.2.19 haproxy-1.5.14 mariadb-10.0.20 : Http://pa

LVS-NAT LVS-DR model of Load Balancing LVS is short for Linux Virtual Server. It is a Virtual Server cluster system that can define one or more backend servers. Worker s in the INPUT kernel. LVS Scheduling Methods: 10Static Method: only scheduling based on the algorithm itselfRr: Round RobinWrr: Weighted RR Weight Round RobinSh: source hashing supports session binding Based on ip address anti-balancingDh: d

Topology description: 650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php? Refimg = "+ this. src) 'border =" 0 "alt =" "src =" http://img1.51cto.com/attachment/201012/143538619.gif "/> Network Description:Four public network lines are connected at the network egress. For example, two egress firewalls are used as HA and the egress address of the firewall is the address of CERNET. That is, VLAN should be enabled for the

1, CentOS installation SFTP, reference2, Nginx-1.8.1 download, nginx_tcp plugin download3. Installing Nginx[[email protected] nginx-1.8.1] # yum-y Install pcre* [[email protected] nginx-1.8.1] # yum-y Install openssl* [[email protected] nginx-1.8.1] # Patch-p1 [[email protected] nginx-1.8.1] # ./configure--add-module=/root/nginx_tcp_proxy_module-master [[email protected] nginx-1.8.1] make [[E-mail protected]nginx-1.8.1] makeinstall4. Configure Nginxuser nginx nginx;worker_processes 4; events

/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>650 "this.width=650;" src= "http ://s4.51cto.com/wyfs02/m01/8c/08/wkiom1hfelzx1wgraaawcrwo834711.png-wh_500x0-wm_3-wmp_4-s_4110980461.png "title = "999.png" alt= "Wkiom1hfelzx1wgraaawcrwo834711.png-wh_50"/>So first put aside these questions do not say, first of all, say the principle, nginx reverse proxy, the client is not aware of the external network server exists, that is, he just follow the DNS server resolution,

/arp_ignoreecho "2" >/proc/sys/net/ipv4/conf/lo/arp_announceecho "1" >/proc/sys/ Net/ipv4/conf/all/arp_ignoreecho "2" >/proc/sys/net/ipv4/conf/all/arp_announceTo run the script:In Director/usr/local/sbin/lvs_dr.shIn Real Serversh/usr/local/sbin/lvs_dr_rs.shReference documents:How the LVS-DR worksHttp://os.51cto.com/art/201105/264303.htmLVS Scheduling Algorithm Classification:Http://www.apelearn.com/bbs/thread-7407-1-1.htmlArp_ignorearp_announce parameter (dr Mode):Http://www.cnblogs.com/lgfeng/a

to. htaccess files, if Apache ' s document Root # concurs with Nginx ' s one # #l ocation ~/\.ht {# deny all; #}} # Another virtual HOST using mix of ip-, name-, and port-based configuration # #server {# listen 8000; # Listen somename:8080; # server_name somename alias Another.alias; # location/{# root HTML; # index index.html index.htm; #} #} # HTTPS Server # #server {# listen 443 SSL; # server_name localhost; # ssl_certificate Cert.pem; # Ssl_certificate_key Cer

:${catalina_home_ "${i}"}/bin/bootstrap.jarExport Catalina_base_ "${i}" Catalina_home_ "${i}"EofDoneCRM dz JZ TB WM xyg YG YJ LCB GW These are the names in the project, you can also name them without having to worry about him.Next, configure the ports for each tomcat. I'll upload the auto-replace script later.Enter the Conf directory for each Tomcat side, cd/usr/local/tomcat/the project name/confVim Server.xmlModified 3:1) 2) connectiontimeout= "20000" redirectport= "8443"/> Port Port number3)

card)Restart the HTTPD service:4. Test LVS:Because the weights set are the same, they are polled for access.Thinking about a question, what if the two sites require the same content to be implemented?There are many scenarios where you can use NFS mount, rsync sync, etc.You can also set the server after the first visit to access this URL, the same server is responsible for responding, so that you have to log on to a site a bit of refresh, causing the problem is not logged in.Use the external net

Nginx load balancing, reverse proxy, and then from the firewall to do forwarding, error, with the external network ip+ port access, the results of CSS style and port are lost!!!!! Intranet ip+ port access, normal!Solution: Use Chrome's Network tab to analyze the project's path and port! Kill the useless in the config file!Pro-Test and change the configuration fil