Nginx配置文件与.netcore网站和couchdb反向代理在ubuntu 18.04LTS &

Question

我正在尝试配置nginx作为我自己在ubuntu上托管的网站的反向代理。没有server_name，因为我正在使用虚拟机IP。

我想要的是，如果我把IP放在浏览器上，然后网站显示，如果我把IP:5984, couchdb信息显示

我已经尝试了多种选择，这完全适用于。net核心网站，但无法访问couchdb

这是我的配置

server {
listen 80;
location /{
proxy_pass http://localhost:5000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection keep-alive;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
location / {
proxy_pass http://localhost:5984/;
proxy_redirect off;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

我也试过这个:

server {
listen 80;
location / {
proxy_pass http://localhost:5000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection keep-alive;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
server {
listen 5984;
location /{
proxy_pass http://localhost:5984/;
proxy_redirect off;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

谢谢!

Answer 1

根据你刚才共享的配置，看起来NGINX和你的couchdb节点运行在同一个实例上(单节点?)你不能在nginx和couchdb上使用相同的端口5984!这在Ubuntu上不起作用。如果你想让反向代理监听5984，让couchbd监听其他东西，例如49152。

如果couchdb和nginx使用相同的端口，error.log的grep

2021/02/09 14:25:15 [emerg] 78949#78949: bind() to 0.0.0.0:5984 failed (98: Address already in use)
2021/02/09 14:25:15 [notice] 78949#78949: try again to bind() after 500ms
2021/02/09 14:25:15 [emerg] 78949#78949: bind() to 0.0.0.0:5984 failed (98: Address already in use)
2021/02/09 14:25:15 [notice] 78949#78949: try again to bind() after 500ms
2021/02/09 14:25:15 [emerg] 78949#78949: bind() to 0.0.0.0:5984 failed (98: Address already in use)
2021/02/09 14:25:15 [notice] 78949#78949: try again to bind() after 500ms
2021/02/09 14:25:15 [emerg] 78949#78949: bind() to 0.0.0.0:5984 failed (98: Address already in use)
2021/02/09 14:25:15 [notice] 78949#78949: try again to bind() after 500ms
2021/02/09 14:25:15 [emerg] 78949#78949: bind() to 0.0.0.0:5984 failed (98: Address already in use)
2021/02/09 14:25:15 [notice] 78949#78949: try again to bind() after 500ms
2021/02/09 14:25:15 [emerg] 78949#78949: still could not bind()

我正在使用docker在我的testserver上运行couch db:

docker run -p 55984:5984 -d -e COUCHDB_USER=admin -e COUCHDB_PASSWORD=password couchdb

6339f2af29ed   couchdb          "tini -- /docker-ent…"   5 seconds ago   Up 4 seconds   4369/tcp, 9100/tcp, 0.0.0.0:55984->5984/tcp   elegant_archimedes

简单的curl直接响应couchdb:

$curl localhost:55984 | jq
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100   247  100   247    0     0   2440      0 --:--:-- --:--:-- --:--:--  2470
{
"couchdb": "Welcome",
"version": "3.1.1",
"git_sha": "ce596c65d",
"uuid": "317efcb5527237d5c9e974c5d3680ae3",
"features": [
"access-ready",
"partitioned",
"pluggable-storage-engines",
"reshard",
"scheduler"
],
"vendor": {
"name": "The Apache Software Foundation"
}
}

这是我的工作NGINX配置

server {
listen 80;
# Proxy location to your backend application. Listen on Port 80.
location / {
proxy_pass       http://localhost:8080;
proxy_set_header Host $host;
}
}
server {
listen 5984;
# CouchDB ProxyLocation. Using InstanceIP with Port `5984`.
location / {
proxy_pass http://localhost:55984;
proxy_redirect off;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

测试:通过NGINX访问CouchDB

$curl localhost:5984 | jq
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100   247  100   247    0     0   8095      0 --:--:-- --:--:-- --:--:--  8233
{
"couchdb": "Welcome",
"version": "3.1.1",
"git_sha": "ce596c65d",
"uuid": "875045f1b2314443a21236808b0223cf",
"features": [
"access-ready",
"partitioned",
"pluggable-storage-engines",
"reshard",
"scheduler"
],
"vendor": {
"name": "The Apache Software Foundation"
}
}

get out to Backend App using NGINX

$curl localhost
<h1>Wellcome! Please Login!</h1>
<form action="doLogin.php" method="post">
<input type="text" id="user" name="user" />
<input type="password" id="password" name="password" />
<input type="submit" value="Login">
</form>

所以在这个配置下它可以工作。目前使用NGINX 1.19.5在CentOS7没有SELinux!