--- doc/build/centos7_install.frag	2014/07/18 03:43:11	1.1
+++ doc/build/centos7_install.frag	2021/03/09 13:51:25	1.4
@@ -92,6 +92,7 @@ Finish installing your server, reboot it
 LON-CAPA uses the traditional iptables package instead of the recent Firewalld, included for the
 first time with CentOS 7.  Accordingly, you should install iptables-services, disable firewalld,
 and enable iptables.
+</p>
 <pre>
 yum install iptables-services
 systemctl mask firewalld
@@ -121,6 +122,12 @@ system-config-firewall-tui
 
 <h2>4. <a name="upd">Update your system</a></h2>
 <p>
+If you are using 64-bit architecture enable access to the EPEL repository.  Execute:
+</p>
+<pre>
+yum install epel-release
+</pre>
+<p>
 Update your system to the latest versions of the system software using yum.
 </p>
 <pre>
@@ -143,6 +150,24 @@ mv /etc/yum.conf /etc/yum.conf.backup
 cp centos7_loncapa_yum.conf /etc/yum.conf
 yum update
 </pre>
+<p>
+Verify the required repositories are enabled:
+</p>
+<pre>
+yum repolist enabled
+</pre>
+<p>
+The list of enabled repos should be as follows (where $basearch = x86_64 or i386). The epel repo will be absent if you are using 32-bit architecture.
+</p>
+<table style="border: 0px; border-collapse: collapse;">
+<tr><th>repo id</th><th>repo name</th></tr>
+<tr><td>base/7/$basearch</td><td>CentOS-7 - Base<td></tr>
+<tr><td>epel/x86_64</td><td>Extra Packages for Enterprise Linux 7 - x86_64</td></tr>
+<tr><td>extras/7/$basearch</td><td>CentOS-7 - Extras</td></tr>
+<tr><td>loncapa-updates-basearch/7/$basearch</td><td>CentOS 7 LON-CAPA $basearch Updates</td></tr>
+<tr><td>loncapa-updates-noarch/7</td><td>CentOS 7 LON-CAPA noarch Updates</td></tr>
+<tr><td>updates/7/$basearch</td><td>CentOS-7 - Updates<td></tr>
+</table>
 
 <h3>Configure SELinux</h3>
 <p>