Merge pull request #8379 from esvmicrosoft/patch-1

genlin · web-flow · commit 802a2b5de8e4 · 2025-03-17T13:57:05.000+08:00
AB#4385: Update upgrade-canonical-ubuntu-18dot04-lts.md
diff --git a/support/azure/virtual-machines/linux/upgrade-canonical-ubuntu-18dot04-lts.md b/support/azure/virtual-machines/linux/upgrade-canonical-ubuntu-18dot04-lts.md
@@ -11,18 +11,24 @@ ms.reviewer: patcatun, clausw, divargas, rondom, azurevmlnxcic, v-weizhu
 
 **Applies to:** :heavy_check_mark: Linux VMs
 
-Even though Canonical Ubuntu 18.04 LTS is out of standard support on May 31, 2023, you can continue to use existing Azure Linux virtual machines (VMs) running it. However, Canonical no longer provides security, feature, and maintenance updates, which may leave your systems vulnerable. We recommend that you either migrate to the next Ubuntu LTS release or upgrade to Ubuntu Pro to gain access to extended security and maintenance from Canonical.
+Canonical Ubuntu 18.04 LTS reached the end of standard support on May 31, 2023. Although you can continue to use existing Azure Linux virtual machines (VMs) that are running Ubuntu 18.04 LTS, these VMs could become vulnerable because Canonical no longer provides security, feature, and maintenance updates for the OS. Therefore, we recommend that you either migrate to the next Ubuntu LTS release or upgrade to Ubuntu Pro.
 
 ## Upgrade to Ubuntu 20.04 LTS or Ubuntu 22.04
 
-Transitioning to the latest operating system, such as [Ubuntu 20.04 LTS](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-server-focal?tab=Overview) or [Ubuntu Pro 22.04 LTS](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-pro-jammy?tab=Overview), is important for performance, hardware enablement, and new technology benefits, and we recommend doing so for new instances. The transition might be a complex process for existing deployments. Therefore, it should be properly scoped and tested with your workload. Although there's no direct upgrade path from Ubuntu 18.04 LTS to Ubuntu 22.04 LTS, you can directly upgrade to Ubuntu 20.04 LTS and then to Ubuntu 22.04 LTS, or directly install Ubuntu 22.04 LTS. For more information, see the [Ubuntu Server upgrade guide](https://ubuntu.com/server/docs/upgrade-introduction).
+To take advantage of improved performance, hardware enablement, and new technology, you should transition to the latest operating system, such as [Ubuntu 20.04 LTS](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-server-focal?tab=Overview) or [Ubuntu Pro 22.04 LTS](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-pro-jammy?tab=Overview). The transition might be complex for existing deployments. Therefore, it should be properly scoped and tested with your workload. 
+
+There's no direct upgrade path from Ubuntu 18.04 LTS to Ubuntu 22.04 LTS. However, you can directly upgrade to Ubuntu 20.04 LTS and then to Ubuntu 22.04 LTS, or you can directly install Ubuntu 22.04 LTS. For more information, see the [Ubuntu Server upgrade guide](https://ubuntu.com/server/docs/upgrade-introduction).
 
 > [!NOTE]
-> An in-place upgrade to a new major version (for example, upgrading from Ubuntu 18.04 to 20.04) will cause a disconnection between the data plane and the [control plane](/azure/architecture/guide/multitenant/considerations/control-planes) of the VM. Azure capabilities such as [Auto guest patching](/azure/virtual-machines/automatic-vm-guest-patching), [Auto OS image upgrades](/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-automatic-upgrade), [Hotpatching](/windows-server/get-started/hotpatch?toc=%2Fazure%2Fvirtual-machines%2Ftoc.json), and [Azure Update Manager](/azure/update-manager/overview) won't be available. To use these features, we recommend that you create a new VM by using your preferred operating system instead of performing an in-place upgrade.
+> An in-place upgrade to a new major version (for example, upgrading from Ubuntu 18.04 to 20.04) breaks the connection between the data plane and the [control plane](/azure/architecture/guide/multitenant/considerations/control-planes) of the VMs. Consequently, Azure capabilities such as [Auto guest patching](/azure/virtual-machines/automatic-vm-guest-patching), [Auto OS image upgrades](/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-automatic-upgrade), [Hotpatching](/windows-server/get-started/hotpatch?toc=%2Fazure%2Fvirtual-machines%2Ftoc.json), and [Azure Update Manager](/azure/update-manager/overview) won't be available. To access these features, we recommend that you create a VM (by using your preferred OS) instead of performing an in-place upgrade.
+
+## Upgrade to Ubuntu Pro - Extended Security Maintenance until 2028
+
+Ubuntu Pro is an enhanced offering that includes security updates for all Ubuntu packages. It provides Extended Security Maintenance (ESM) for infrastructure and applications and optional full-time (24 hours a day, seven days a week) telephone and ticket support. Ubuntu Pro 18.04 LTS remains fully supported until April 2028. 
 
-## Upgrade to Ubuntu Pro – Extended Security Maintenance until 2028
+You can deploy new VMs that run Ubuntu Pro from the [Azure Marketplace](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-pro-bionic?tab=Overview). You can upgrade your Ubuntu Server (version 16.04 or higher) VM to Ubuntu Pro through an [in-place upgrade](/azure/virtual-machines/workloads/canonical/ubuntu-pro-in-place-upgrade). Alternatively, you can directly purchase the system from [Canonical](https://ubuntu.com/pro). 
 
-Ubuntu Pro includes security patching for all Ubuntu packages because of Extended Security Maintenance (ESM) for infrastructure and applications and optional full-time (24 hours a day, seven days a week) telephone and ticket support. Ubuntu Pro 18.04 LTS will remain fully supported until April 2028. Ubuntu Pro is free for personal and small-scale commercial users on up to five VMs and has transparent, per-machine pricing for enterprises. New VMs that run Ubuntu Pro can be deployed from the [Azure Marketplace](https://azuremarketplace.microsoft.com/marketplace/apps/canonical.0001-com-ubuntu-pro-bionic?tab=Overview). You can also upgrade existing VMs to [Ubuntu Pro](https://ubuntu.com/pro) by purchasing from Canonical. For more information about the end of standard support for Ubuntu 18.04 LTS, see [Ubuntu 18.04 LTS (Bionic Beaver) on Azure](https://ubuntu.com/18-04/azure). 
+For more information about the end of standard support for Ubuntu 18.04 LTS, see [Ubuntu 18.04 LTS (Bionic Beaver) on Azure](https://ubuntu.com/18-04/azure). 
 
 [!INCLUDE [Third-party disclaimer](../../../includes/third-party-disclaimer.md)]
 
