f5 load balancer configuration step by step

according to certain algorithms, balance the load of all servers in the cluster as much as possible. For external clients, they do not know which server in the cluster is accessed. multiple servers can be regarded as a "large" server logically. In this way, when the service capabilities of the cluster cannot meet the current needs, it is very convenient to add new servers to the cluster to meet the needs. It can be seen that the system has excellent

least_conn to the festival.In addition, this can be configured on each load server as follows:A, down: The current server temporarily does not participate in the load;B, Max_fails: The number of times to allow the request to fail defaults to 1, and when the maximum number of times is exceeded, the error defined by the Proxy_next_upstream module is returned;C, fail_timeout:max_fails times of failure, the ti

Apache Load Balancer Session sticker configuration (JK mode) In the work, because other products and Apache reverse proxy mode of work is not very good, so need to put Apache and Application Server (TOMCAT) co-configuration of a long MOD_JK mode of the session paste pattern, in the

:229406(224.0KiB) TX Bytes:229406(224.0KiB) [Email protected] keepalived]# Ipvsadm-lnip Virtual Server version1.2.1(size=4096) Prot localaddress:port Scheduler Flags-remoteaddress:port Forward Weight activeconn inactconntcp192.168.103.100: theWRR Persistent --192.168.103.101: theRoute1 0 0-192.168.103.105: theRoute1 0 0If the NODE3 does not turn off the firewall, the ETH0:1 network card is also enabled, so be careful to shut down the firewall.Linux under KEEPALIVED+LV

Logs_path= "/data/logs/"#将日志改名Mkdir-p ${logs_path}${date-d "Yesterday" + "%Y"}/${date-d "Yesterday" + "%m"}/MV ${logs_path}access.log ${logs_path}${date-d "Yesterday" + "%Y"}/${date-d "Yesterday" + "%m"}/access_${date-d "yester Day "+"%y%m%d "}.log#重启Nginx服务, regenerate the Access.log fileService Nginx Reload#创建计划任务#crontab-|* * * */bin/bash/data/logs.shLoad BalancingUpstream My_server_pool {}Copies the specified input file into the specified output file, and can be converted to a format during

# #location ~/\.ht{ #denyall;#} }#anothervirtualhostusingmix ofip-,name-,andport-basedconfiguration# #server { #listen8000; #listensomename:8080; #server_namesomenamealias another.alias;#location/{# roothtml;# indexindex.htmlindex.htm;# }#}#HTTPSserver # #server {# listen443;#server_namelocalhost; #ssl on;#ssl_certificate cert.pem;#ssl_certificate_ keycert.key;#ssl_session_timeout5m; #ssl_protocolsSSLv2SSLv3TLSv1; #ssl_ciphershigh:!anull:! md5;#ssl_prefer_server_cipherson; #location/{# roothtml

maximum number of failures is 3, which is 3 attempts, and the time-out is 30 seconds. The default value for Max_fails is 1, andthe default value for Fail_timeout is 10s. The case of a transmission failure, specified by Proxy_next_upstream or Fastcgi_next_upstream. You can also use Proxy_connect_timeout and proxy_read_timeout to control the upstream response time. One situation to note is that the max_fails and Fail_timeout parameters may not work when there is only one server in upstream. The p

This article mainly introduced the Nginx to do nodejs application load Balancer Configuration example, this article directly gives the configuration instance, needs the friend can refer to.load Balancing allows the user's requests to be distributed across multiple servers for processing, enabling access to a huge numbe

allocation#========loadbalancer, Load Balancer controller ========Worker.loadbalancer.type=lb#请求失败以后重试次数Worker.loadbalancer.retries=3#controller控制的tomcat的名称, TOMCAT1 and TOMCAT2 respectively, set by Server.xml in TomcatWorker.loadbalancer.balance_workers=tomcat1,tomcat2,tomcat3#回话是否有粘性, false means no stickiness, and the same reply request will be processed in different tomcatWorker.loadbalancer.sticky_ses

; Proxy_next_upstream Error timeout Invalid_header http_500 http_502 http_503 http_504; Proxy_max_temp_file_size 0; Proxy_connect_timeout 90; Proxy_send_timeout 90; Proxy_read_timeout 90; Proxy_buffer_size 4k; Proxy_buffers 4 32k; Proxy_busy_buffers_size 64k; Proxy_temp_file_write_size 64k; } } There are several ways Nginx does load balancing:1. RR (default) Each request is assigned to a different back-end server in chronol

default is 1.weight, the larger the load weight. 3.max_fails: The number of times that a request failed is allowed defaults to 1. When the maximum number of times is exceeded, returns the time that the Proxy_next_upstream module defines the error 4.fail_timeout:max_fails after the failure. 5.backup: When all other non-backup machines are down or busy, request the backup machine. So the pressure on this machine is the lightest.Nginx supports multiple

'; Upstream web_app { Server 127.0.0.1: 8080 Weight = 1 max_fails = 2 fail_timeout = 30 s; Server 127.0.0.1: 8081 Weight = 1 max_fails = 2 fail_timeout = 30 s; } #### Chinaapp.sinaapp.com Server { Listen 80; SERVER_NAME chinaapp.sinaapp.com; Index index. jsp index.html index.htm; # Release directory/data/WWW Root/data/WWW; Location/ { Proxy_next_upstream http_502 http_504 error timeout invalid_header; Proxy_set_header host $ h

High-availability server Load balancer configuration for HAProxy + Keepalived in CentOS5.5I. system environment:System Version: CentOS5.5 x86_64Master_ip: 172.20.27.40Backup_ip: 172.20.27.50Vip: 172.20.27.200Web_1: 172.20.27.90Web_2: 172.20.27.100Ii. haproxy installation:1. First install 172.20.27.40:1.1 installationTar zxvf haproxy-1.3.20.tar.gzCd haproxy-1.3.20

First, the premise1: System Linux (CentOS)2:nginx Proxy Server (web:192.168.1.10 proxy.abc.com)3:nginx Background Server (web1:192.168.1.11 www.abc.com web2:192.168.1.12 backend.abc.com)Second, configuration (192.168.1.10)1: Configure/usr/local/nginx/config/nginx.confRemove server{} and introduce all server configurations via include config.d/*.confAdd the following lines at the end of the nginx.conf:ABC { 127.0. 0.1:8000; # # #通

: VMware8.0, three CentOS5.6 virtual machines Server Configuration C_server 8.8.8.1 D_SERVER0 8.8.8.8 (Public network IP) D_server1 192.168.10.1 (LAN IP) R_server1 192.168.10.2(LAN IP) R_server2 192.168.10.3(LAN IP) Ensure that C_server and D_SERVER0 can communicate with each other, d_server1,r_server1 and r_server2 can communicate with each other, and R_server1 and R_server2 gateways point to D_ Server1 (Command: Route add default GW 192.168.10.1), i

Nginx + Tomcat server Load balancer ConfigurationGuideNginx + tomcat is the mainstream Java Web architecture of Internet companies. nginx + tomcat can work stably at the same time. How can I use nginx to reverse proxy tomcat backend balancing? Directly install the configuration as follows:Install JAVA JDK # Download the appropriate jdk software package, and then

First download, install Tomcat.Modify the Tomcat port and modify the Server.xml:1. Modify the Tomcat port (default 8080)port= "8383" protocol= "http/1.1" connectiontimeout = "20000" redirectport= "8443"/>2.shutdown Port (default 8005)port= "8006" shutdown= "shutdown"> className = "Org.apache.catalina.startup.VersionLoggerListener"/> 3. Modify the AJP port (default 8009)- port = "8019" protocol = "ajp/1.3" Redirectport = "8443" />At the same time modify the

DocumentRootDocumentRoot "/data/wwwroot/polyguide"About 477 lines, remove comments, enable Apache to turn on the virtual host functionInclude/etc/httpd/extra/httpd-vhosts.conf(2) Edit httpd virtual Host configuration fileVim/etc/httpd/extra/httpd-vhosts.confServerName a.pl.com #基于域名的虚拟主机DocumentRoot "/data/wwwroot/polyguide"Options Noneallowoverride NoneRequire all granted #允许所有用户访问Rewriteengine onRewriterule ^/static/(. *)/static/$1 [L]Rewriterule ^

With load balancing, modify the configuration HTTP node as follows:#设定http服务器, using its reverse proxy function to provide load balancer support http{ #设定mime类型, type defined by Mime.type file include/etc/nginx/ mime.types;default_typeapplication/octet-stream; #设定日志格式 access_log/var/log/ nginx/access.log; #省略上文有的一些配置

Nginx Simple Server Load balancer configuration example 01 user www; 02 03worker_processes 10; 04 05 # error_log logs/error. log; 06 # error_log logs/error. log notice; 07 # error_log logs/error. log info; 08 09 # pid logs/nginx. pid; 10 11 # maximum file descriptor 12worker_rlimit_nofile 51200; 13 14events15 {16 use epoll; 17 18 worker_connections 51200; 19} 20