Taskomatic fails to start and seeing "proxy: DNS lookup failure for: localhost returned by /rpc/api" in apache error_log

Issue

• Problem started happening after upgrading a number of RPMs on the satellite
• Taskomatic not starting with the usual error message in /var/log/rhn/rhn_taskomatic_daemon.log:

STATUS | wrapper  | 2012/07/25 15:01:20 | Launching a JVM...
INFO   | jvm 5    | 2012/07/25 15:01:20 | Wrapper (Version 3.2.1) http://wrapper.tanukisoftware.org
INFO   | jvm 5    | 2012/07/25 15:01:20 |
ERROR  | wrapper  | 2012/07/25 15:01:26 | Startup failed: Timed out waiting for signal from JVM.
ERROR  | wrapper  | 2012/07/25 15:01:27 | JVM did not exit on request, terminated
FATAL  | wrapper  | 2012/07/25 15:01:27 | There were 5 failed launches in a row, each lasting less than 300 seconds.  Giving up.
FATAL  | wrapper  | 2012/07/25 15:01:27 |   There may be a configuration problem: please check the logs.
STATUS | wrapper  | 2012/07/25 15:01:27 | <-- Wrapper Stopped

• Seeing the following error messages in /var/log/httpd/error_log:

[Wed Jul 25 19:15:29 2012] [error] [client 127.0.0.1] proxy: DNS lookup failure for: localhost returned by /rpc/api
[Wed Jul 25 19:15:33 2012] [error] [client 127.0.0.1] proxy: DNS lookup failure for: localhost returned by /rpc/api
[Wed Jul 25 19:15:37 2012] [error] [client 127.0.0.1] proxy: DNS lookup failure for: localhost returned by /rpc/api

• And these messages in /var/log/httpd/ssl_error_log:

[Wed Jul 25 15:22:12 2012] [error] [client 10.38.11.34] proxy: DNS lookup failure for: localhost returned by /rhn/Login.do
[Wed Jul 25 15:22:30 2012] [error] [client 10.38.11.34] proxy: DNS lookup failure for: localhost returned by /rhn/Login.do
[Wed Jul 25 15:26:53 2012] [error] [client 10.38.11.34] proxy: DNS lookup failure for: localhost returned by /rhn/Login.do

• Putting SELinux into permissive mode allows taskomatic to start, but SELinux in enforcing mode is required