如何在无订阅情况下升级Red Hat Enterprise Linux 6.5补丁？

Hey there, let's work through your RHEL 6.5 questions step by step. Since RHEL 6 reached end-of-life (EOL) back in 2020, official Red Hat updates are no longer available even with a subscription—so using compatible community sources is the way to go here without a paid plan.

1. 无订阅情况下升级RHEL 6.5补丁的方法 #

We'll use the CentOS 6 vault repositories (RHEL and CentOS are binary-compatible for major versions) to get security and bugfix patches:

• First, back up your existing yum repo configs to avoid breaking things:

  sudo cp -r /etc/yum.repos.d/ /etc/yum.repos.d.bak/
  

• Next, remove all default Red Hat repo files:

  sudo rm -f /etc/yum.repos.d/*.repo
  

• Create a new CentOS 6 repo file pointing to the archived vault sources (since CentOS 6 is also EOL):

  sudo tee /etc/yum.repos.d/CentOS-Base.repo <<EOF
  [base]
  name=CentOS-6 - Base
  baseurl=https://vault.centos.org/6.10/os/\$basearch/
  gpgcheck=1
  gpgkey=https://vault.centos.org/6.10/os/x86_64/RPM-GPG-KEY-CentOS-6
  enabled=1
  
  [updates]
  name=CentOS-6 - Updates
  baseurl=https://vault.centos.org/6.10/updates/\$basearch/
  gpgcheck=1
  gpgkey=https://vault.centos.org/6.10/os/x86_64/RPM-GPG-KEY-CentOS-6
  enabled=1
  
  [extras]
  name=CentOS-6 - Extras
  baseurl=https://vault.centos.org/6.10/extras/\$basearch/
  gpgcheck=1
  gpgkey=https://vault.centos.org/6.10/os/x86_64/RPM-GPG-KEY-CentOS-6
  enabled=1
  EOF
  

• Clean old yum cache and generate a new one:

  sudo yum clean all
  sudo yum makecache
  

• Run the system update to apply all available patches:

  sudo yum update -y
  

2. 解决"This system is not registered to Red Hat Subscription Management..."报错 #

This error pops up because RHEL's default yum setup is tied to Red Hat Subscription Management (RHSM), which requires a paid subscription to access official repos. The repo replacement we did above already bypasses this, but if you want to eliminate the warning entirely:

• Disable the subscription-manager yum plugin:

  sudo sed -i 's/enabled=1/enabled=0/' /etc/yum/pluginconf.d/subscription-manager.conf
  

• Alternatively, uninstall the subscription-manager package entirely (only do this if you're sure you'll never use RHSM):

  sudo yum remove subscription-manager -y
  

内容的提问来源于stack exchange，提问作者lswong