一 查看tomcat app的server name
root@k8s-master-01:~# kubectl get svc -n wgs
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
wgs-tomcat-app1-service NodePort 10.100.39.62 <none> 80:40003/TCP 60m
二 查看集群domain
root@k8s-master-01:~# kubectl exec wgs-tomcat-app1-deployment-764458b74f-xbd7r -n wgs -- cat /etc/resolv.conf
nameserver 10.100.0.2
search wgs.svc.wgs.local svc.wgs.local wgs.local
options ndots:5
三 nginx配置
3.1 工作目录
root@ceph-node04:/data/k8s/dockerfile/web/nginx/nginx-app01# pwd
/data/k8s/dockerfile/web/nginx/nginx-app01
3.2 修改nginx.conf文件
查看代码
root@ceph-node04:/data/k8s/dockerfile/web/nginx/nginx-tomcat# cat nginx.conf
user nginx nginx;
worker_processes auto;
daemon off;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
log_format log_json '{'
'"@timestamp":"$time_iso8601",'
'"@source":"$server_addr",'
'"@nginx_fields":{'
'"x_forwarded_for":"$http_x_forwarded_for",'
'"request":"$request",'
'"status":"$status",'
'"size":"$body_bytes_sent",'
'"http_referer":"$http_referer",'
'"client":"$remote_addr",'
'"responsetime":"$request_time",'
'"upstreamtime":"$upstream_response_time",'
'"upstreamaddr":"$upstream_addr",'
'"request_method":"$request_method",'
'"domain":"$host",'
'"url":"$uri",'
'"request_body":"$request_body",'
'"http_user_agent":"$http_user_agent"'
'}'
'}';
access_log logs/access.log log_json;
sendfile on;
keepalive_timeout 65;
upstream tomcat_webserver {
server wgs-tomcat-app1-service.wgs.svc.wgs.local:80;
}
server {
listen 80;
server_name localhost;
location / {
root html;
index index.html index.htm;
}
location /myapp {
proxy_pass http://tomcat_webserver;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
3.3 重新构建镜像
root@ceph-node04:/data/k8s/dockerfile/web/nginx/nginx-app01# ./build-command.sh v1.1
Sending build context to Docker daemon 8.192kB
Step 1/6 : FROM 192.168.174.120/baseimages/nginx:1.20.2
---> 9e15403c2475
Step 2/6 : ADD nginx.conf /usr/local/nginx/conf/nginx.conf
---> Using cache
---> 00c339b1c62d
Step 3/6 : ADD webapp /usr/local/nginx/html/webapp/
---> a3db10cedd5d
Step 4/6 : ADD index.html /usr/local/nginx/html/index.html
---> 23191a7a8545
Step 5/6 : EXPOSE 80 443
---> Running in d65afdeeae25
Removing intermediate container d65afdeeae25
---> 4aef837a8fe6
Step 6/6 : CMD ["nginx"]
---> Running in 29536957fb3f
Removing intermediate container 29536957fb3f
---> b43430ba271f
Successfully built b43430ba271f
Successfully tagged 192.168.174.120/baseimages/nginx-web1:v1.1
3.4 上传镜像到harbor
root@ceph-node04:/data/k8s/dockerfile/web/nginx/nginx-app01# docker push 192.168.174.120/baseimages/nginx-web1:v1.1
四 更新nginx pod
4.1 修改nginx.yaml
root@k8s-master-01:/data/k8s/yaml# sed -i 's@192.168.174.120/baseimages/nginx-web1:v1.0@192.168.174.120/baseimages/nginx-web1:v1.1@g' nginx/nginx.yaml
4.2 更新nginx pod
root@k8s-master-01:/data/k8s/yaml# kubectl apply -f nginx/nginx.yaml
deployment.apps/wgs-nginx-deployment configured
service/wgs-nginx-service unchanged
4.3 查看当前pod
root@k8s-master-01:/data/k8s/yaml# kubectl get pods -n wgs
NAME READY STATUS RESTARTS AGE
wgs-nginx-deployment-b4475bcf5-k29nv 1/1 Running 0 2m46s
wgs-tomcat-app1-deployment-764458b74f-xbd7r 1/1 Running 0 88m
4.4 验证nginx配置文件
查看代码
root@k8s-master-01:/data/k8s/yaml# kubectl exec wgs-nginx-deployment-b4475bcf5-k29nv -n wgs -- cat /usr/local/nginx/conf/nginx.conf
user nginx nginx;
worker_processes auto;
daemon off;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
log_format log_json '{'
'"@timestamp":"$time_iso8601",'
'"@source":"$server_addr",'
'"@nginx_fields":{'
'"x_forwarded_for":"$http_x_forwarded_for",'
'"request":"$request",'
'"status":"$status",'
'"size":"$body_bytes_sent",'
'"http_referer":"$http_referer",'
'"client":"$remote_addr",'
'"responsetime":"$request_time",'
'"upstreamtime":"$upstream_response_time",'
'"upstreamaddr":"$upstream_addr",'
'"request_method":"$request_method",'
'"domain":"$host",'
'"url":"$uri",'
'"request_body":"$request_body",'
'"http_user_agent":"$http_user_agent"'
'}'
'}';
access_log logs/access.log log_json;
sendfile on;
keepalive_timeout 65;
upstream tomcat_webserver {
server wgs-tomcat-app1-service.wgs.svc.wgs.local:80;
}
server {
listen 80;
server_name localhost;
location / {
root html;
index index.html index.htm;
}
location /myapp {
proxy_pass http://tomcat_webserver;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
4.5 查看当前svc
root@k8s-master-01:/data/k8s/yaml# kubectl get svc -n wgs
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
wgs-nginx-service NodePort 10.100.114.185 <none> 80:40002/TCP,443:40443/TCP 14m
wgs-tomcat-app1-service NodePort 10.100.39.62 <none> 80:40003/TCP 89m
五 web访问测试
root@k8s-master-01:~# curl http://192.168.174.108:40002/
hello nginx
root@k8s-master-01:~# curl http://192.168.174.108:40002/myapp/
tomcat docker image test
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