gerrit issue "Operation timed out"

[allen zhang]

Hi All,

I am meeting this weird problem, it shows up in my web page something like this when I am trying to visit http://test.123.com/gerrit/login/

Network Error (tcp_error) 

A communication error occurred: "Operation timed out"

The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.

For assistance, contact your network support team.

the story is :

input http://test.123.com/gerrit/login/ in my IE and then pop up the auth dialog request my username and passwd, so I can put in my user and password, and then it will eventually time out with the above message in my browser. it seems port 8081 does NOT work in gerrit side. I need any help that can help me to narrow down this problem. I am so tired with this issue, so far I have no any clue on it yet. 

It is so weird as I can access gerrit web page before I reboot my machine and it seems gerrit could no longer get to port 8081. 

Note: I have already disabled selinux and iptable service.

my httpd config file:

vim /etc/httpd/conf/httpd.conf

<VirtualHost *>

  ProxyRequests Off

  ProxyVia Off

  ProxyPreserveHost On

  <Proxy *>

        Order deny,allow

        Allow from all

  </Proxy>

  <Location /gerrit/login/>

     AuthType Basic

     AuthName "Gerrit Code Review"

     AuthBasicProvider file

     AuthUserFile /etc/passwords

     Require valid-user

  </Location>

  RedirectMatch ^/gerrit$ /gerrit/

  ProxyPass /gerrit/ http://test.123.com:8081/gerrit/

</VirtualHost>

my gerrit.config file looks like as following:

cat /home/gerrit/review_site/etc/gerrit.config

[gerrit]

        basePath = git

        canonicalWebUrl = http://test.123.com:8081/gerrit/

[database]

        type = MYSQL

        hostname = test.123.com

        database = reviewdb

        username = gerrit

[auth]

        type = HTTP

[sendemail]

        smtpServer = localhost

        smtpUser = gerrit

[container]

        user = gerrit

        javaHome = /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre

[sshd]

        listenAddress = *:2034

[httpd]

        listenUrl = proxy-http://*:8081/gerrit

[cache]

        directory = cache

[Shawn Pearce]

Remove the :8081 here. This should be the URL of your Apache server,
which is probably on port 80 and thus doesn't need the port number in
the URL.

> [sshd]
> listenAddress = *:2034
> [httpd]
> listenUrl = proxy-http://*:8081/gerrit

This is fine. You want this URL port number to match the number you
have in your ProxyPass line in the httpd.conf file (above).