How to Register a system and Enable Red Hat Subscription

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Register a system and Enable Red Hat Subscription is required for Redhat support and updating packages from Redhat repository.

How to Register a system and Enable Red Hat Subscription: 4 Easy steps

Step 1:- Verify Server requirements

# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.7 (Maipo)

Note: For CentOS no subscription required only check if getting all updates using 
# yum list all

# subscription-manager list
+-------------------------------------------+
    Installed Product Status
+-------------------------------------------+
Product Name:   Red Hat Enterprise Linux Server
Product ID:     85
Version:        7.7
Arch:           x86_64
Status:         Unknown
Status Details:
Starts:
Ends:

# subscription-manager status
WARNING
This system has already been registered with Red Hat using RHN Classic.

Your system is being registered again using Red Hat Subscription Management. Red Hat recommends that customers only register once.

To learn how to unregister from either service please consult this Knowledge Base Article: https://access.redhat.com/kb/docs/DOC-45563

Note: If warning coming use below command to unsubscribe from RHN Classic

# rm -rf /etc/sysconfig/rhn/systemid

Set Proxy details if using in your network. 
# vi /etc/rhsm/rhsm.conf

# Server hostname:
hostname = subscription.rhsm.redhat.com

# Server prefix:
prefix = /subscription

# Server port:
port = 443

# Set to 1 to disable certificate validation:
insecure = 0

# Set the depth of certs which should be checked
# when validating a certificate
ssl_verify_depth = 3

# an http proxy server to use
proxy_hostname = 

# port for http proxy server
proxy_port =

# user name for authenticating to an http proxy, if needed
proxy_user =

# password for basic http proxy auth, if needed
proxy_password =

# host/domain suffix blacklist for proxy, if needed
no_proxy =

[rhsm]
# Content base URL:
baseurl = https://cdn.redhat.com

# Repository metadata GPG key URL:
repomd_gpg_url =

# Server CA certificate location:
ca_cert_dir = /etc/rhsm/ca/

Note: If all parameters in red are same then proceed

Step 2:- Set Proxy

# vi /etc/rhsm/rhsm.conf

set proxy IP and port as below
# an http proxy server to use
#proxy_hostname =
proxy_hostname = xxx.xxx.xxx.xxx

# port for http proxy server
#proxy_port =
proxy_port = xxxx

Step 3:- (RHEL Subscription)

#  subscription-manager register
Registering to: subscription.rhsm.redhat.com:443/subscription
Username: xxxxxxxxx
Password: xxxxxxxxxx
The system has been registered with ID: xxxxxxxxxxxxxxxxxxxxxxxxxxx
The registered system name is: Machine Name

[Localhost.localdomain ~]#  subscription-manager auto-attach
Auto-attach preference: enabled
[Localhost.localdomain ~]#  subscription-manager subscribe
Installed Product Current Status:
Product Name: Red Hat Enterprise Linux Server
Status:       Subscribed

# subscription-manager list
+-------------------------------------------+
    Installed Product Status
+-------------------------------------------+
Product Name:   Red Hat Enterprise Linux Server
Product ID:     85
Version:        7.7
Arch:           x86_64
Status:        Subscribed
Status Details:
Starts:         10/15/2019
Ends:           01/15/2024

#  subscription-manager status
+-------------------------------------------+
   System Status Details
+-------------------------------------------+
Overall Status: Current
System Purpose Status: Not Specified

# subscription-manager list --consumed
+-------------------------------------------+
   Consumed Subscriptions
+-------------------------------------------+
Subscription Name:   Red Hat Enterprise Linux for Virtual Datacenters, Premium
Provides:            Red Hat CodeReady Linux Builder for x86_64
                     Red Hat Enterprise Linux Atomic Host
                     Red Hat Enterprise Linux Atomic Host Beta
                     Red Hat Developer Tools (for RHEL Server)
                     Red Hat Developer Tools Beta (for RHEL Server)
                     Red Hat Developer Toolset (for RHEL Server)
                     Red Hat Enterprise Linux High Performance Networking (for RHEL Server) - Extended Update Support
                     Red Hat Enterprise Linux for x86_64
                     Red Hat Enterprise Linux Resilient Storage (for RHEL Server) - Extended Update Support
                     dotNET on RHEL (for RHEL Server)
                     Red Hat Enterprise Linux Server - Extended Update Support
                     Red Hat Enterprise Linux Scalable File System (for RHEL Server) - Extended Update Support
                     Red Hat Beta
                     Red Hat EUCJP Support (for RHEL Server) - Extended Update Support
                     Oracle Java (for RHEL Server)
                     Oracle Java (for RHEL Workstation)
                     Red Hat Software Collections (for RHEL Server)
                     Oracle Java (for RHEL Server) - Extended Update Support
                     Red Hat S-JIS Support (for RHEL Server) - Extended Update Support
                     Red Hat Software Collections Beta (for RHEL Server)
                     Red Hat Enterprise Linux High Availability (for RHEL Server) - Extended Update Support
                     Red Hat Ansible Engine
                     Red Hat Enterprise Linux Load Balancer (for RHEL Server) - Extended Update Support
                     Red Hat Enterprise Linux Server
SKU:                 xxxxxxxxx
Contract:            xxxxxxxxxx
Account:             xxxxxxxxx
Serial:              xxxxxxxxxxxxxxxxxxxxxxxxxx
Pool ID:             xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Provides Management: No
Active:              True
Quantity Used:       1
Service Level:       Premium
Service Type:        L1-L3
Status Details:      Subscription is current
Subscription Type:   Standard
Starts:              10/15/2019
Ends:                01/15/2024
System Type:         Virtual

Step 4:- (Verifying for getting updates)

# yum list all
Loaded plugins: product-id, search-disabled-repos, subscription-manager
Installed Packages
GConf2.x86_64                                     3.2.6-8.el7         @Server                    
GeoIP.x86_64                                        1.5.0-14.el7       @rhel-7-server-rpms        
ModemManager-glib.x86_64                1.6.10-3.el7_6   @rhel-7-server-rpms        
NetworkManager.x86_64                      1:1.18.0-5.el7    @rhel-7-server-rpms    

Also find other topics Unsubscribe RHEL and Enable virt-who service for RHEL subscription


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