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Date: Wed, 11 Jan 2017 00:49:17 +0000 (UTC)
From: modjklist@comcast.net
To: Tomcat Users List <users@tomcat.apache.org>
Message-ID: <360171122.88503202.1484095757282.JavaMail.zimbra@comcast.net>
In-Reply-To: <81ccd9d8-8388-3c75-ef76-1edcb92a1c9d@christopherschultz.net>
References: <740724059.87059185.1483941452508.JavaMail.zimbra@comcast.net> <81ccd9d8-8388-3c75-ef76-1edcb92a1c9d@christopherschultz.net>
Subject: Re: 404 errors accessing webapp URLs using local IP address on
 fresh Tomcat 8.5.9 install
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Thread-Topic: 404 errors accessing webapp URLs using local IP address on fresh Tomcat 8.5.9 install
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archived-at: Wed, 11 Jan 2017 00:53:57 -0000

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Thanks for the help Christopher, 

I resolved this by adding 192.168.0.2 to hostB's httpd.conf file as a VirtualHost, then including JkMount for mod_jk. 

----- Original Message -----

From: "Christopher Schultz" <chris@christopherschultz.net> 
To: "Tomcat Users List" <users@tomcat.apache.org> 
Sent: Tuesday, January 10, 2017 11:50:27 AM 
Subject: Re: 404 errors accessing webapp URLs using local IP address on fresh Tomcat 8.5.9 install 

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To whom it may concern, 

On 1/9/17 12:57 AM, modjklist@comcast.net wrote: 
> I have two Linux servers connected via a cross-connect cable with 
> internal IP addresses 192.168.0.1 (hostA) and 192.168.0.2 (hostB). 
> 
> 
> hostA runs CentOS 5, and hostB CentOS 7. 
> 
> hostB runs Apache 2.4.x, and Tomcat 8.5.9. All web traffic gets 
> routed to port 443 (e.g. HTTPS) of Apache web server hostB. All web 
> application traffic (e.g. 
> https://www.example.com/mywebapp/somepage) is then passed to Tomcat 
> via mod_jk version 1.2.42 on port 8009. Additionally, hostB Apache 
> web server is configured to listen on 192.168.0.2 port 8009 (hostA 
> Apache web server is not configured as such). 
> 
> If hostA attempts to access a webpage on hostB (via hostB external 
> IP address) from a browser or command line, such as: [root@hostA 
> ~]# curl -I http://www.example.com/mywebapp/somepage 
> 
> it returns status 200 (good). 
> 
> Now, if I modify the hostA /etc/hosts file hostA accesses to my 
> website (www.example.com) on hostB through the cross-connect cable 
> (e.g. 192.168.0.2 rather than the external IP address), the webpage 
> returns error 404. 
> 
> What can I change to get status 200? 
> 
> My web addresses are xxx.xxx.xxx.xxx (e.g. IPv4). I know Tomcat 
> configures IPv6 by default. So, I modified the setenv.sh as 
> follows: 
> 
> CATALINA_OPTS="-Xms512M -Xmx1024M -Djava.awt.headless=true 
> -Djava.net.preferIPv4Stack=true 
> -Djava.net.preferIPv4Addresses=true" 
> 
> This didn't change the result. 
> 
> As another clue, I observe that hostA always reports status 200 
> (good) when accessing any hostB webpage in www.example.com that is 
> NOT part of /mywebapp, for both internal and external IP addresses. 
> 
> 
> Any ideas what I can try to resolve this? I'm new to Tomcat and 
> this is fresh install (previously used GlassFish) on a brand new 
> server. Thanks in advance for any advice. 

What does hostA say when you issue "host [hostB]" from the command-line? 

- -chris 
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