sticky session load balancer

Core Tip: Goal: To use Apache and tomcat to configure a Web site that can be applied, to meet the following requirements: 1. Use Apache as the httpserver and connect multiple Tomcat application instances, and load balancing. 2. Set the Session Timeout time for the system, including Apache and tomcat 3. List of blocked files for the system, including Objectives:To use Apache and tomcat to configure a Web sit

. Compiling and installingSetting Installation Parameters[Email protected] nginx-1.10.2]#./configure--prefix=/usr/local/nginx--with-http_ssl_moduleCompiling and installing[[email protected] nginx-1.10.2]# make[[email protected] nginx-1.10.2]# make installOpenSSL generates a test CA certificate: See Resources1.1.1.4. Modify the nginx.conf file for load balancing:Requirements: 1. User through HTTPS access, through the Nginx reverse proxy implementation

. Advert_int 1 ## set the synchronization interval authentication {## set the authentication type and password. master and buckup must be set to the same auth_type PASSauth_pass 1111} virtual_ipaddress {## set multiple VIPs, each row occupies 192.168.1.135} virtual_server 192.168.1.135 80 {delay_loop 6 # Health Check Interval. The unit is slb_algo wrr # The Server Load balancer scheduling algorithm is set t

Systemctl start mariadb 4. Test Results (1) When the backend server is normal Web detection page, everything is normal (2) When the backend Static Page service cluster is down and no static page is displayed, it indicates that the dynamic/static page separation is successful. Experiment 4: Permission control and session persistence based on ACL 1. Environment preparation: Machine name IP configuration Service role Remarks

Based on the huge network structure, the use of Cluster Server brings a lot of load problems such as traffic. So the relative, load-balanced technology also emerged. Each technology requires product support, so let's now look at one of the F5 load balancers. So first of all, we first introduce the structure of the product function.Many vendors have launched a

localhost# Host name searched by the Web Client Errorlog "/opt/apache_log/apppolicerror.log" Customlog "/opt/apache_log/app1_access.log"Common Proxypass/balancer: // cluster/stickysession = JSESSIONID | JSESSIONID nofailover = on lbmethod = byrequests timeout = 5 maxattempts = 3 #Balancer: the method used to copy sessions, includingJSESSIONIDOrPHPSESSIONID；Nofailover: On indicates that the

receives multiple concurrent requests to access the Web Services on 61.134.38.5. At this time, the layer-4 switch of Alteon will reasonably allocate these requests to S1, S2, and S3 based on certain algorithms to achieve dynamic load balancing.　　The above section briefly introduces the application of layer-4 Switching Technology in Server Load balancer. However,

start nginx.5. Open a browser:Enter http: // 192.168.16.16 for accessTest: Disable the website on S1, refresh the browser access, disable the website on S2, open the website on S1, and refresh the browser access. Core code 1: Add in http {}Copy codeThe Code is as follows: # Set the Server list of Server Load balancerUpstream localhost {# Allocate the backend tomcat servers to the requests based on ip computing to solve the

maximum number of times is exceeded, an error defined by the proxy_next_upstream module is returned. Fail_timeout: the time when the service is suspended after a max_fails failure. Max_fails can be used with fail_timeout. * // * The server load balancer algorithm supported by upstream * // * Round Robin (default ). Each request is distributed to different backend servers one by one in chronological order.

Many large sites, ngixn often as a reverse proxy sever load upstream Web server with high availability mechanism to build a large Web cluster, and to build such a cluster through nginx, it is inevitable that the nginx a very important module: Load Balancer module ( Upstream), as shown below is an introduction to the Nginx Lo