1. COP 4343 Unix System Administration
Unit 2:
yum
network access
webserver

2. Yellowdog updater modified
Based on Redhat package manager
uses rpm files
downloads rpm files from repositories
Configuration: /etc/yum.repos.d
default:
retrieve mirror list from redhat.com
optional:
setup local fedora and fedora-updates repositories

3. /etc/yum.repos.d fedora.repo fedora-updates.repo
baseurl=ftp://mirror.cs.fiu.edu/pub/mirrors/fedora/$releasever/$basearch/os
fedora-updates.repo
baseurl=ftp://mirror.cs.fiu.edu/pub/mirrors/fedora/updates/$releasever/$basearch/

4. Yellowdog updater modified
yum check-update
checks for available updates
yum update
updates all installed packages
also: yum update yum
yum install package-name
installs new package

5. Network access Your machine will be given full Internet access if:
You have installed all current patches available for your distribution
You send to with
Your machines IP number
don’t send the root password
Your machine passes a security assessment administered by SCS support personnel

6. Apache Webserver Install with: Configuration file:
yum install httpd
Configuration file:
/etc/httpd/conf/httpd.conf
Make part of run-level:
chkconfig --add httpd
chkconfig httpd on
Start webserver
service httpd start
Configure access through firewall
/etc/sysconfig/iptables

7. Apache Webserver /etc/httpd/conf/httpd.conf Global: Main server:
Server root
Interface and port
Main server:
User/group
Admin, name
Document root
Userdir
Directory index and access
Logs
Cgi handling

8. Apache Webserver /etc/httpd/conf/httpd.conf Virtual hosts Name
Document root
logs