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+# Netdata via nginx
+
+To pass netdata via a nginx, use this:
+
+### As a virtual host
+
+```
+upstream backend {
+ # the netdata server
+ server 127.0.0.1:19999;
+ keepalive 64;
+}
+
+server {
+ # nginx listens to this
+ listen 80;
+
+ # the virtual host name of this
+ server_name netdata.example.com;
+
+ location / {
+ 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_pass http://backend;
+ proxy_http_version 1.1;
+ proxy_pass_request_headers on;
+ proxy_set_header Connection "keep-alive";
+ proxy_store off;
+ }
+}
+```
+
+### As a subfolder to an existing virtual host
+
+```
+upstream netdata {
+ server 127.0.0.1:19999;
+ keepalive 64;
+}
+
+server {
+ listen 80;
+
+ # the virtual host name of this subfolder should be exposed
+ #server_name netdata.example.com;
+
+ location = /netdata {
+ return 301 /netdata/;
+ }
+
+ location ~ /netdata/(?<ndpath>.*) {
+ proxy_redirect off;
+ proxy_set_header Host $host;
+
+ proxy_set_header X-Forwarded-Host $host;
+ proxy_set_header X-Forwarded-Server $host;
+ proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+ proxy_http_version 1.1;
+ proxy_pass_request_headers on;
+ proxy_set_header Connection "keep-alive";
+ proxy_store off;
+ proxy_pass http://netdata/$ndpath$is_args$args;
+
+ gzip on;
+ gzip_proxied any;
+ gzip_types *;
+ }
+}
+```
+
+### As a subfolder for multiple netdata servers, via one nginx
+
+```
+upstream backend-server1 {
+ server 10.1.1.103:19999;
+ keepalive 64;
+}
+upstream backend-server2 {
+ server 10.1.1.104:19999;
+ keepalive 64;
+}
+
+server {
+ listen 80;
+
+ # the virtual host name of this subfolder should be exposed
+ #server_name netdata.example.com;
+
+ location ~ /netdata/(?<behost>.*)/(?<ndpath>.*) {
+ proxy_set_header X-Forwarded-Host $host;
+ proxy_set_header X-Forwarded-Server $host;
+ proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+ proxy_http_version 1.1;
+ proxy_pass_request_headers on;
+ proxy_set_header Connection "keep-alive";
+ proxy_store off;
+ proxy_pass http://backend-$behost/$ndpath$is_args$args;
+
+ gzip on;
+ gzip_proxied any;
+ gzip_types *;
+ }
+
+ # make sure there is a trailing slash at the browser
+ # or the URLs will be wrong
+ location ~ /netdata/(?<behost>.*) {
+ return 301 /netdata/$behost/;
+ }
+}
+```
+
+Of course you can add as many backend servers as you like.
+
+Using the above, you access netdata on the backend servers, like this:
+
+- `http://nginx.server/netdata/server1/` to reach `backend-server1`
+- `http://nginx.server/netdata/server2/` to reach `backend-server2`
+
+
+### Enable authentication
+
+Create an authentication file to enable the nginx basic authentication.
+Do not use authentication without SSL/TLS!
+If you haven't one you can do the following:
+
+```
+printf "yourusername:$(openssl passwd -apr1)" > /etc/nginx/passwords
+```
+
+And enable the authentication inside your server directive:
+
+```
+server {
+ # ...
+ auth_basic "Protected";
+ auth_basic_user_file passwords;
+ # ...
+}
+```
+
+## limit direct access to netdata
+
+If your nginx is on `localhost`, you can use this to protect your netdata:
+
+```
+[web]
+ bind to = 127.0.0.1 ::1
+```
+
+---
+
+You can also use a unix domain socket. This will also provide a faster route between nginx and netdata:
+
+```
+[web]
+ bind to = unix:/tmp/netdata.sock
+```
+_note: netdata v1.8+ support unix domain sockets_
+
+At the nginx side, use something like this to use the same unix domain socket:
+
+```
+upstream backend {
+ server unix:/tmp/netdata.sock;
+ keepalive 64;
+}
+```
+
+---
+
+If your nginx server is not on localhost, you can set:
+
+```
+[web]
+ bind to = *
+ allow connections from = IP_OF_NGINX_SERVER
+```
+
+_note: netdata v1.9+ support `allow connections from`_
+
+`allow connections from` accepts [netdata simple patterns](../libnetdata/simple_pattern/) to match against the connection IP address.
+
+## prevent the double access.log
+
+nginx logs accesses and netdata logs them too. You can prevent netdata from generating its access log, by setting this in `/etc/netdata/netdata.conf`:
+
+```
+[global]
+ access log = none
+```
+
+## SELinux
+
+If you get an 502 Bad Gateway error you might check your nginx error log:
+
+```sh
+# cat /var/log/nginx/error.log:
+2016/09/09 12:34:05 [crit] 5731#5731: *1 connect() to 127.0.0.1:19999 failed (13: Permission denied) while connecting to upstream, client: 1.2.3.4, server: netdata.example.com, request: "GET / HTTP/2.0", upstream: "http://127.0.0.1:19999/", host: "netdata.example.com"
+```
+
+If you see something like the above, chances are high that SELinux prevents nginx from connecting to the backend server. To fix that, just use this policy: `setsebool -P httpd_can_network_connect true`.
+
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fdocs%2FRunning-behind-nginx&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()