Estou usando o Centos 7 com Nginx e um SSL do letsencrypt para usar como proxy para jenkins no mesmo droplet. Tudo estava funcionando até o ponto que eu tentei proxy Jenkins .. que deu um erro 502 Bad Gateway. O bloco do servidor está abaixo, alguma idéia porque isso está acontecendo?
server {
listen 443 ssl;
ssl_certificate /etc/letsencrypt/live/DOMAIN.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/DOMAIN.com/privkey.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:E$
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_stapling on;
ssl_stapling_verify on;
add_header Strict-Transport-Security max-age=15768000;
server_name DOMAIN.com;
location ~ /.well-known {
allow all;
}
# The rest of your server block
root /usr/share/nginx/html;
index index.html index.htm;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
# Uncomment to enable naxsi on this location
# include /etc/nginx/naxsi.rules
}
location ^~ /jenkins {
sendfile off;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto https;
#proxy_redirect http:// https://;
add_header Pragma "no-cache";
# Fix the “It appears that your reverse proxy set up is broken" error.
proxy_pass http://localhost:8080;
proxy_read_timeout 90;
proxy_redirect http://localhost:8080 https://DOMAIN.com/jenkins;
# Optionally, require HTTP basic auth.
# auth_basic "Please authenticate";
# auth_basic_user_file /opt/nginx/htpasswd;}}
Aqui estão algumas linhas extraídas do log de erros do nginx:
2016/05/12 11:43:03 [error] 2514#0: *1 no resolver defined to resolve localhost, client: xxx.xxx.xxx.xxx, server: DOMAIN.com, request: "GET /jenkins HTTP/1.1", host$
2016/05/12 12:18:24 [error] 2724#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: DOMAIN.com, request$
2016/05/12 12:18:25 [error] 2724#0: *1 no live upstreams while connecting to upstream, client: xxx.xxx.xxx.xxx, server: DOMAIN.com, request: "GET /jenkins HTTP/1.1"$
EDITAR: Um amigo começou a trabalhar editando meu bloco de servidor abaixo das diretivas SSL como essa, mas ele estava tentando o que quer que funcionasse, não tenho certeza se essa é a melhor maneira?
location ~ "^/static/[0-9a-fA-F]{8}\/(.*)$" {
#rewrite all static files into requests to the root
#E.g /static/12345678/css/something.css will become /css/something.css
rewrite "^/static/[0-9a-fA-F]{8}\/(.*)" /$1 last;}
location /userContent {
#have nginx handle all the static requests to the userContent folder files
#note : This is the $JENKINS_HOME dir
root /var/lib/jenkins/;
if (!-f $request_filename){
#this file does not exist, might be a directory or a /**view** url
rewrite (.*) /$1 last;
break;}
sendfile on;}
location @jenkins {
sendfile off;
proxy_pass http://127.0.0.1:8080;
proxy_redirect http:// https://;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_max_temp_file_size 0;
#this is the maximum upload size
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;}
location / {
# Optional configuration to detect and redirect iPhones
if ($http_user_agent ~* '(iPhone|iPod)') {
rewrite ^/$ /view/iphone/ redirect;}
try_files $uri @jenkins;}}
O Nginx no Centos 7 costuma ter problemas com o SELinux, para descobrir:
sudo cat /var/log/audit/audit.log | grep nginx | grep denied
Se houver alguma linha, isso pode corrigir:
sudo cat /var/log/audit/audit.log | grep nginx | grep denied | audit2allow -M mynginx
sudo semodule -i mynginx.pp