Issue

• On Amazon EC2 client registered to RHN Classic or Satellite, rhnplugin get disabled automatically after updating system. Here are steps :

1) List channels to which system is subscribed on RHN Classic

# rhn-channel -l
    jbappplatform-6-x86_64-server-6-rpm
    rhel-x86_64-server-6

2) Check /etc/yum/pluginconf.d/rhnplugin.conf:

# cat /etc/yum/pluginconf.d/rhnplugin.conf
[main]
enabled = 1
gpgcheck = 1

3) Update EC2 instance

# yum update
Loaded plugins: amazon-id, rhnplugin, rhui-lb, security
This system is receiving updates from RHN Classic or RHN Satellite.
<snip>
rh-amazon-rhui-client   noarch 2.2.106-1.el6_5      rhui-REGION-client-config-server-6
<snip>
  Updating   : yum-rhn-plugin-0.9.1-49.el6.noarch                        20/155
warning: /etc/yum/pluginconf.d/rhnplugin.conf created as /etc/yum/pluginconf.d/rhnplugin.conf.rpmnew
<snip>
 Updating   : rh-amazon-rhui-client-2.2.106-1.el6_5.noarch              60/155
warning: /etc/yum.repos.d/redhat-rhui-client-config.repo saved as /etc/yum.repos.d/redhat-rhui-client-config.repo.rpmsave
warning: /etc/yum.repos.d/redhat-rhui.repo saved as /etc/yum.repos.d/redhat-rhui.repo.rpmsave

4) Check status of rhnplugin

# cat /etc/yum/pluginconf.d/rhnplugin.conf
[main]
enabled = 0
gpgcheck = 1