之前实现了由nginx负载均衡到服务,然而服务那么多,这样弄的话很麻烦,而且没有经过网关做的一些统一处理
所以这次实现nginx负载均衡到网关,再由网关路由到各个服务
1.参考相关官方文档
可以看出,分为两步,1.配置上游服务器 2.配置代理
2.在nginx的总配置文件中,配置上游服务器
这里我们配置的网关
[root@10 ~]# cd /
[root@10 /]# ls
bin boot dev -e etc home lib lib64 media mnt mydata opt proc root run sbin srv swapfile sys tmp usr -v vagrant var
[root@10 /]# cd mydata/nginx/conf/
[root@10 conf]# ls
conf.d fastcgi_params koi-utf koi-win mime.types modules nginx.conf scgi_params uwsgi_params win-utf
[root@10 conf]# vi nginx.conf
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/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 /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
upstream gulimall{
server 192.168.56.1:88;
}
include /etc/nginx/conf.d/*.conf;
"nginx.conf" 35L, 694C written
上面的这一段是我添加的
就是本机的网关,真实项目可能有多个网关,那个时候配多个就完事了
2.代理配置
将之前配置的代理到商品服务
改为代理到上面配置的上游服务器
[root@10 conf.d]# ls
default.conf gulimall.conf
[root@10 conf.d]# vi gulimall.conf
server {
listen 80;
server_name gulimall.com;
#charset koi8-r;
#access_log /var/log/nginx/log/host.access.log main;
location / {
proxy_pass http://gulimall;
}
#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 /usr/share/nginx/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;
"gulimall.conf" 44L, 1061C written
[root@10 conf.d]# docker restart nginx
nginx
[root@10 conf.d]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
85e5c45a30da nginx:1.10 "nginx -g 'daemon of…" 4 weeks ago Up 5 seconds 0.0.0.0:80->80/tcp, 443/tcp nginx
6919debe7c73 elasticsearch:7.4.2 "/usr/local/bin/dock…" 4 weeks ago Up 2 hours 0.0.0.0:9200->9200/tcp, 0.0.0.0:9300->9300/tcp elasticsearch
fda06f05a0a0 kibana:7.4.2 "/usr/local/bin/dumb…" 4 weeks ago Up 2 hours 0.0.0.0:5601->5601/tcp kibana
69e789223ef0 redis "docker-entrypoint.s…" 4 weeks ago Up 2 hours 0.0.0.0:6379->6379/tcp redis
7c3556ac5cf1 mysql:5.7 "docker-entrypoint.s…" 4 weeks ago Up 2 hours 0.0.0.0:3306->3306/tcp, 33060/tcp mysql
3.配置主机路由
上面配置好后我们访问,还是报404,原因是网关还没有配置路由规则
跟之前的地址路由不同,这里我们要配置主机路由https://cloud.spring.io/spring-cloud-static/spring-cloud-gateway/2.1.3.RELEASE/single/spring-cloud-gateway.html
可以看到
所以我们在gate模块的配置添加如下路由,这个配置记住要放在最下面,具体原因不说了,重启
- id: gulimall_host_route
uri: lb://gulimall-product
predicates:
- Host=**.gulimall.com
4.解决主机名丢失问题
重启后发现访问后还是404
随便从某controller内整个请求,通过下面这个访问说明,我们nginx确实负载到网关,然后网关实现路由了
那么为啥我们访问gulimall.com还是404呢,原因是nginx代理给网关的时候,会丢失请求的host信息,就是下面这玩意
那么我们要添加配置 在之前在gulimall.conf添加的配置上加上,结尾不要忘记引号
proxy_set_header Host $host;
配置完后重启nginx
再次访问,商品首页出现
5.总结
首先windows上配置了映射,gulimall.com被映射到虚拟机,此时访问到虚拟机的默认端口80,被监听到了,此时nginx根据配置把它代理到网关,但是代理给网关的时候会丢失一个主机名的头,所以我们要加个配置,网关一看是主机是gulimall.com的,由于我们在路由中有配置,所以直接路由到商品页首页
至此实现了如下