CODEWITHSUNDEEP
apachehttp-redirectproxydnscouchdb
SmokinGrunts
SmokinGrunts

Reputation: 108

Access CouchDB Fauxton UI from subdomain

Remote Server: Ubuntu 14.04 Headless

I've setup Couchdb v2.0.0 successfully, and can access it remotely via www.[mydomain].com:5984/_utils

I want to create a subdomain to access this URL, something like dbadmin.[mydomain].com

First, I created a subdomain of db.[mydomain].com (Here's the apache2 vhost config:)

<VirtualHost *:80>
    ServerName db.[mydomain].com

    ProxyRequests Off
    ProxyPreserveHost On
    ProxyVia Off

    <Proxy *>
        Require all granted
    </Proxy>

    ProxyPass / http://db.[mydomain].com:5984/
    ProxyPassReverse / http://db.[mydomain].com:5984/
</VirtualHost>

Note: I have replaced [mydomain] with the actual domain ;P

I then created an A Record with my DNS Registrar as follows:

db     A       [PublicIP]

and then a SRV Record:

_db._tcp.db  SRV     0      5       5984    db.[mydomain].com

and I test it by going to http://db.[mydomain].com/ on my laptop

Result: {"couchdb":"Welcome","version":"2.0.0","vendor":{"name":"The Apache Software Foundation"}}

So a success, I think. Now, I create the dbadmin subdomain. Apache2 vhost config:

<VirtualHost *:80>
    ServerName dbadmin.[mydomain].com

    ProxyRequests Off
    ProxyPreserveHost On
    ProxyVia Off

    <Proxy *>
        Require all granted
    </Proxy>

    ProxyPass / http://db.[mydomain].com:5984/_utils
    ProxyPassReverse / http://db.[mydomain].com:5984/_utils
</VirtualHost>

Then another A Record:

dbadmin     A       [PublicIP]

Followed by another SRV Record:

_dbadmin._tcp.dbadmin  SRV     0      5       5984    dbadmin.[mydomain].com

I test it by visiting http://dbadmin.[mydomain].com

Result: {"error":"unauthorized","reason":"You are not a server admin."}

I have spent far too many hours trying to suss out the proper way of doing this. I've tried all sorts of configurations, settings, DNS Records, changing couch's local.ini, proxy settings... You get the idea.

Please, elucidate how I can simply redirect a subdomain to either the server's public IP + port + path or the server's root domain + port + path?

Upvotes: 1

Views: 788

Answers (1)

SmokinGrunts
SmokinGrunts

Reputation: 108

I solved this with mod_rewrite in the VHost config:

<VirtualHost *:80>
ServerName dbadmin.[mydomain].com

ProxyRequests Off
ProxyPreserveHost On
ProxyVia Off

<Proxy *>
     Require all granted
</Proxy>

ProxyPass / http://db.[mydomain].com:5984/
ProxyPassReverse / http://db.[mydomain].com:5984/

RewriteEngine on
RewriteCond %{REQUEST_URI} !^/_utils
RewriteRule ^/$ /_utils/$1 [R,L]

It appears that I didn't even need the SRV Record, either. Groovy!

Can anyone succinctly explain to me what the Regex for this condition and rule are actually doing? I know at a basic level that it looks for /_utils in the query, and if not there, it puts it there...

The rule does however remove the protocol identifier 'http://' from the beginning of the URL, which is rather annoying... Can anyone explain why, and how to prevent that from happening?

Upvotes: 1

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