This system is not registered with an entitlement server. Use subscription-manager to register.

It looks like your system is not registered with an entitlement server, which is why you’re seeing the “Unable to read consumer identity” message. This is preventing yum from accessing the necessary repositories to update or upgrade httpd.

To resolve this issue, you can register your system using the subscription-manager. Here are the steps:

1. Register your system:

sudo subscription-manager register –username <your-username> –password <your-password>

Replace <your-username> and <your-password> with your Red Hat account credentials.
If you don’t have an account, you may need to create one here: https://console.redhat.com/

2. Attach a subscription:

sudo subscription-manager attach –auto

But since you’re using CentOS Stream 9, you don’t need to use subscription-manager as it’s primarily for Red Hat Enterprise Linux (RHEL). Instead, you can enable the repositories directly using dnf.

Here are the steps to enable the necessary repositories on CentOS Stream 9:

1. Enable the CodeReady Linux Builder repository:

sudo dnf config-manager –set-enabled crb

2. Install the epel-release and epel-next-release packages:

sudo dnf install epel-release epel-next-release

3. Enable the BaseOS and AppStream repositories:

sudo dnf config-manager –set-enabled baseos
sudo dnf config-manager –set-enabled appstream

4. Update or install httpd:

sudo dnf update httpd

In some cases, you might want to first clear the DNF cache before running the updates:

1. Clean the DNF cache:

sudo dnf clean all

2. Check for available updates:

sudo dnf check-update

3. Specifically update httpd:

sudo dnf update httpd

4. Update all packages:

sudo dnf update