05-10-2019
In general, all traffic on the Internet has a beginning and an end point Often, this is referred to as the client and the server.
The server listens on well known ports. The client generally uses whatever is available.
When you run HTTPD on your machine, it is generally acting as a client, listening on port 80, or port 443 if using SSL.
When you use YUM to access their repo services, their server is generally listening or port 80, or port 442 if using SSL.
So, when you block HTTPD on your computer, you are not blocking that service on another server, like YUM, because to access a repo like YUM or GIT you are acting as a client, accessing a server. When you block or disable HTTPD on your computer, you are simply blocking access to your server, locally.
You should probably do some homework and learn some basics about client-server processes.
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LEARN ABOUT CENTOS
yum-debug-dump
yum-debug-dump(1) yum-debug-dump(1)
NAME
yum-debug-dump - write system RPM configuration to a debug-dump file
SYNOPSIS
yum-debug-dump
DESCRIPTION
yum-debug-dump is a program which creates a gzipped file containing a lot of information useful to developers trying to debug a problem.
By default it will output a file to the current working directory named yum_debug_dump-<hostname>-<time>.txt.gz. This file contains no pri-
vate information but does contain a complete list of all packages you have installed, all packages available in any repository, important
configuration and system information. You can view this file using the 'zless' command.
You can use the coresponding program yum-debug-restore to act on this file and restore a set of packages (much like dump/restore).
FILES
As yum-debug-dump uses YUM libraries for retrieving all the information, it relies on YUM configuration for its default values like which
repositories to use. Consult YUM documentation for details:
/etc/yum.conf
/etc/yum/repos.d/
/var/cache/yum/
SEE ALSO
yum-debug-restore (1)
yum.conf (5)
http://yum.baseurl.org/
AUTHORS
See the Authors file included with this program.
BUGS
There are of course no bugs, but should you find any, you should first consult the FAQ section on http://yum.baseurl.org/wiki/Faq and if
unsuccessful in finding a resolution contact the mailing list: yum-devel@lists.baseurl.org. To file a bug use http://bugzilla.redhat.com
for Fedora/RHEL/Centos related bugs and http://yum.baseurl.org/report for all other bugs.
Seth Vidal 28 April 2008 yum-debug-dump(1)