Tag: apache

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Apache2 proxy for Tomcat7

 

Tomcat runs on port 8080 by default

You’ll put the following 2 lines in your /etc/apache2/sites-available/example.com file

ProxyPass /logger http://localhost:8080/logger
ProxyPassReverse /logger http://localhost:8080/logger

Make sure that the folder and the tomcat deployment are the same name or it won’t serve static content correctly.

 

 

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MaxClients in Apache2 is a canary for other vhost logging misconfiguration

I first noticed a problem when the browser started timing out with the message “Establishing Secure Connection”.

I checked Apache’s log at /var/log/apache2/error.log and found the following

[error] server reached MaxClients setting, consider raising the MaxClients setting

I knew at 12:30 am I wasn’t getting that many legitimate users. I noted my other_vhost_access.log were getting huge and showing the following spam.

www.clayweidinger.com:80 216.244.68.204 – – [29/Mar/2014:00:16:50 -0500] “GET http://ib.adnxs.com/bounce?%2Fttj%3Fid%3D2443770%26cb%3D%5BCACHEBUSTER%5D%26referrer%3D%5BREFERRER_URL%5D%26pubclick%3D%5BINSERT_CLICK_TAG%5D HTTP/1.0” 200 0 “http://www.cashwargames.com/view/6407/barbie-pop-diva.html” “Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9”
www.clayweidinger.com:80 216.244.93.140 – – [29/Mar/2014:00:16:50 -0500] “GET http://ib.adnxs.com/ttj?id=2382498&cb=[CACHEBUSTER]&pubclick=[INSERT_CLICK_TAG] HTTP/1.0” 302 0 “http://www.wealthsuperman.com/index.php/component/k2/itemlist/category/42-credit-cards” “Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; en) Opera 11.00”

I disabled logging by commenting out the line in /etc/apache2/conf.d/other_vhost_access_log.

 

 

 

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Apache virtual hosts setup needs proper A DNS record

When I was first setting up SSL with Apache, I discovered apache was sending me to a different virtual host when I typed in the www. or left it off.

<VirtualHost *:443>
ServerName domainname.com
ServerAlias www.domainname.com
...

I eventually learned that I needed to change my configuration to..

ServerName  www.clayweidinger.com
ServerAlias www.clayweidinger.com *.clayweidinger.com clayweidinger.com

But the most important part was making sure I had both a www and a blank/@ DNS A record or CNAME record on my domain registration site.

I won’t make that mistake again!