Setting up a Local Yum Server Using an ISO Image

8 Setting up a Local Yum Server Using an ISO Image

To set up a local yum server (for example, if you have a network of systems that do not have Internet access):

Choose one of the systems to be the yum server, and create a local yum repository on it as described in Creating a Local Yum Repository Using an ISO Image.
Install the Apache HTTP server from the local yum repository.
```
sudo yum install httpd
```
If SELinux is enabled in enforcing mode on your system:
1. Use the semanage command to define the default file type of the repository root directory hierarchy as httpd_sys_content_t:
```
sudo /usr/sbin/semanage fcontext -a -t httpd_sys_content_t "/var/OSimage(/.*)?"
```
2. Use the restorecon command to apply the file type to the entire repository.
```
sudo /sbin/restorecon -R -v /var/OSimage
```
Note:

The semanage and restorecon commands are provided by the policycoreutils-python and policycoreutils packages.
Create a symbolic link in /var/www/html that points to the repository:
```
sudo ln -s /var/OSimage /var/www/html/OSimage
```
Edit the HTTP server configuration file, /etc/httpd/conf/httpd.conf, as follows:
1. Specify the resolvable domain name of the server in the argument to ServerName.
```
ServerName server_addr:80
```
  If the server does not have a resolvable domain name, enter its IP address instead.
2. Verify that the setting of the Options directive in the <Directory "/var/www/html"> section specifies Indexes and FollowSymLinks to allow you to browse the directory hierarchy, for example:
```
Options Indexes FollowSymLinks
```
3. Save your changes to the file.
Start the Apache HTTP server, and configure it to start after a reboot.
```
sudo systemctl start httpd
sudo systemctl enable httpd
```
If you have enabled a firewall on your system, configure it to allow incoming HTTP connection requests on TCP port 80, for example:
```
sudo firewall-cmd --zone=zone --add-port=80/tcp
sudo firewall-cmd --permanent --zone=zone --add-port=80/tcp
```
Disable all existing yum repositories on the server and each client system.

In the /etc/yum.repos.d directory, edit any existing repository files and disable all entries by setting enabled=0. If you have the yum-utils package installed, as described in Using Yum Utilities to Manage Configuration, you can disable all repositories by running:
```
sudo yum-config-manager --disable \*                  
```
Edit the repository file on the server (for example, /etc/yum.repos.d/OL75.repo):
```
[OL75]
name=Oracle Linux 7.5 x86_64
baseurl=http://server_addr/OSimage/OL7.5_x86_64
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY
gpgcheck=1 
enabled=1 
```
Replace server_addr with the IP address or resolvable host name of the local yum server.
On each client, copy the repository file from the server to the /etc/yum.repos.d directory.

On the server and each client, test that you can use yum to access the repository.

sudo yum repolist

Loaded plugins: refresh-packagekit, security
...
repo id                          repo name                                status
OL75                             Oracle Linux 7.5 x86_64                  5,070
repolist: 5,070