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In many cases, zookeeper is the first choice for complex balancing based on wcf, which can have better control granularity, but zk is not friendly to C#, and it is relatively troublesome to implement. In actual circumstances, if
If the granularity of your load mechanism is very rough, you can use nginx first. It can achieve complex balancing and dual-machine hot backup, and implement our business with the smallest amount of code. I will share it in detail below.
1: Prepared materials
1. Not much to say, a picture is worth a thousand words. The servers in the picture are all virtualized by vmware, as shown below:
《 1》 Three windows machines, two WCF windows servers (192.168.23.187, 192.168.23.188), one Client server (192.168.23.1)
《2》 One Centos machine, used Hosts web complex balancing nginx (192.168.23.190).
《3》Add host mapping in all Client Hosts files: [192.168.23.190 cluster.com] to facilitate access to the IP address of the server where nginx is located through the domain name.
2: Environment setup
1. WCF program
Since it is a test, it must be a simple program, and the code is not completely given.
《1》 HomeService implementation class code is as follows (output the IP address of the current server for easy viewing):
public class HomeService : IHomeService { public string DoWork(string msg) { var ip = Dns.GetHostAddresses(Dns.GetHostName()).FirstOrDefault(i => i.AddressFamily == AddressFamily.InterNetwork).ToString(); return string.Format("当前 request 由 server={0} 返回", ip); } }
《2》App.Config code
<?xml version="1.0" encoding="utf-8" ?> <configuration> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" /> </startup> <system.serviceModel> <behaviors> <serviceBehaviors> <behavior name=""> <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="false" /> </behavior> </serviceBehaviors> </behaviors> <services> <service name="WcfService.HomeService"> <endpoint address="/HomeService" binding="basicHttpBinding" contract="WcfService.IHomeService"> <identity> <dns value="localhost" /> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> <host> <baseAddresses> <add baseAddress="http://192.168.23.187:8733" /> </baseAddresses> </host> </service> </services> </system.serviceModel> </configuration>
[root@localhost nginx-1.13.6]# make && make install
[root@localhost conf]# ls
fastcgi.conf koi-utf nginx.conf uwsgi_params
fastcgi.conf.default koi-win nginx.conf.default uwsgi_params.defaultfastcgi_params mime.types scgi_params win-utf
fastcgi_params.default mime.types.default scgi_params.default[root@localhost conf]# vim nginx.conf
#user nobody; worker_processes 1; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; #log_format main '$remote_addr - $remote_user [$time_local] "$request" ' # '$status $body_bytes_sent "$http_referer" ' # ' "$http_user_agent" "$http_x_forwarded_for"'; #access_log logs/access.log main; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; #gzip on; upstream cluster.com{ server 192.168.23.187:8733 weight=1; server 192.168.23.188:8733 weight=5; } server { listen 80; server_name localhost; #charset koi8-r; #access_log logs/host.access.log main; location / { root html; index index.html index.htm; proxy_pass http://cluster.com; #设置主机头和客户端真实地址,以便服务器获取客户端真实IP proxy_set_header X-Forwarded-Host $host; proxy_set_header X-Forwarded-Server $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Real-IP $remote_addr; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # #location ~ \.php$ { # root html; # fastcgi_pass 127.0.0.1:9000; # fastcgi_index index.php; # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; # include fastcgi_params; #} # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.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 cert.key; # ssl_session_cache shared:SSL:1m; # ssl_session_timeout 5m; # ssl_ciphers HIGH:!aNULL:!MD5; # ssl_prefer_server_ciphers on; # location / { # root html; # index index.html index.htm; # } #} }
class Program { static void Main(string[] args) { for (int i = 0; i < 1000; i++) { HomeServiceClient client = new HomeServiceClient(); var info = client.DoWork("hello world!"); Console.WriteLine(info); System.Threading.Thread.Sleep(1000);14 } Console.Read(); } }
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