Upgrade Host Kernels to 553 for ZStack Cloud 5.5.x

Scenario

• Product: ZCF
• Component: ZStack Cloud
• Version: 5.5.x
• Current kernel: 4.18.0-425.19.2.4.g0fd3a169.el8.x86_64
• Target kernel: 4.18.0-553.69.1.13.gc220c6303994.el8.x86_64
• Deployment: Dual management nodes
• Trigger: Host kernels must be upgraded to 553, with related driver and environment validation.

Symptoms

• Current host kernel versions are old.
• Hosts must be upgraded to 4.18.0-553.69.1.13.
• The change also requires mlnx-ofed driver and post-upgrade firewall-rule checks.

Assessment

1. Confirm that the target host is evacuated before upgrade.
2. Verify the kernel, driver, and NIC state after upgrade.