Several ways to implement session pasting in Nginx load balancer server

1. Use Nginx Ip_hash as Load Balancer Service and support session sticky

2, using nginx sticky third-party module to achieve cookie-based load balancing

3, using the Nginx map instruction according to the cookie shunt:

Map $COOKIE _abcdexpid $group {  ~*1$apache001;  ~*2$apache002;  Defaultroot;} Upstream apache001 {  server 192.168.1.1:8080 weight=1 Max_fails=1 fail_timeout=30s;} upstream apache002 {  Server 192.168.1.2:8080 weight=1 Max_fails=1 fail_timeout=30s;} Upstream root {  server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;} server {  listen       8080;  server_name  neoremind.net;   Log_format  main  ' $remote _addr-$remote _user [$time _local] "$request" "            $status $body _bytes_sent" $ Http_referer "group= $group" "            $http _user_agent" $gzip _ratio $request _time "$http _x_forwarded_for";   Access_log  Logs/access_log main;  Error_log   Logs/error_log;   Location/{        Proxy_pass/HTTP $group;    Proxy_set_header x-forwarded-for $remote _addr;    }}

4. Using Set and If...else ... Based on Cookie diversion

Upstream apache001 {  server 192.168.1.1:8080 weight=1 Max_fails=1 fail_timeout=30s;} upstream apache002 {  Server 192.168.1.2:8080 weight=1 Max_fails=1 fail_timeout=30s;} Upstream root {  server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;} server {  listen       8080;  server_name  beidoutest.baidu.com;   #match Cookie  Set $group "root";  if ($http _cookie ~* "abcdexpid= ([^;] +) (1$) {    set $group apache001;  }  if ($http _cookie ~* "abcdexpid= ([^;] +) (2$) {    set $group apache002;  }   Log_format  main  ' $remote _addr-$remote _user [$time _local] "$request" "            $status $body _bytes_sent" $ Http_referer "group= $group" "            $http _user_agent" $gzip _ratio $request _time "$http _x_forwarded_for";   Access_log  Logs/access_log main;  Error_log   Logs/error_log;   Location/{    Proxy_pass/HTTP $group;    Proxy_set_header x-forwarded-for $remote _addr;  } }

5, the nginx1.7.2 version after the hash method provided:

# HTTP Context  upstream backend_hosts {      hash $cookie _jsessionid consistent;      Server host1.example.com;     Server host2.example.com;     

}

• This article is from: Linux Learning Network

Several ways to implement session pasting in Nginx load balancer server