Upgrade requirements Before upgrading to CloudLink version 7.0.2, ensure that the following requirements are met. Upgrade paths You must be using the version 6.9.0 (build 899.7) or 7.0.0 (build 8.7) or 7.0.1 (build 12.17) before upgrading to CloudLink version 7.0.2. Log in to the CloudLink Center to verify the CloudLink version and build number. The version and build number is displayed in the Information box on the CloudLink Center Home panel. If CloudLink Center was deployed using a version earlier to CloudLink 6.9, the upgrade includes an update to Ubuntu Server version 16.04. This update increases the time that is required for the upgrade process. For Microsoft Azure—If CloudLink Center virtual appliance is running CloudLink version 6.9 or 7.0 or 7.0.1, and Ubuntu version 14.04, then upgrade to CloudLink version 7.0.2 includes an update to Ubuntu Server version 16.04. This update increases the CloudLink 7.0.2 upgrade time. NOTE: Wait until the CloudLink version 7.0.2 upgrade is completed. Do not perform any operations during the 7.0.2 upgrade process. For Amazon Web Services (AWS)—If CloudLink Center virtual appliance is running CloudLink version 6.9 or 7.0 or 7.0.1, and Ubuntu Server version 14.04, then upgrade to CloudLink version 7.0.2 fails. Contact Dell Technologies Support to upgrade to CloudLink version 7.0.2. An active Internet connection is required to download the latest packages for upgrading Ubuntu Server on Microsoft Azure and AWS. VMs Ensure that your CloudLink Center virtual appliance is running the version 6.9.0 (build 899.7) or 7.0.0 (build 8.7) or 7.0.1 (build 12.17). Verify that all CloudLink Center VM must have at least 6 GB of RAM and four vCPUs before you upgrade. If a CloudLink Center VM does not have sufficient resources for the upgrade, a System does not meet requirements alarm is triggered. To automatically upgrade all CloudLink Agents, ensure that all machines that are registered with CloudLink Center are online and display as Connected in CloudLink Center. The Machine Agent Upgrade policy must be set to Auto. If the Machine Agent Upgrade policy is set to Auto, any CloudLink Agent that is not connected to CloudLink Center is automatically upgraded the next time the CloudLink Agent connects. Perform the postupgrade verification if machines are online and connected during the upgrade. For more information, see Postupgrade verification. If the Machine Agent Upgrade policy is set to Manual, then all the machines in the respective machine group that uses Machine Agent Upgrade policy must be upgraded manually. Verify that CloudLink Center cluster servers are online and synchronized with each other. Backups Ensure that the following critical backup requirements are met: It is recommended that you back up CloudLink Center and all VMs before starting the upgrade process. Perform backups by using VM snapshots or traditional backup tools. Back up your CloudLink Center configuration data. For more information, see the chapter "Back up and restore CloudLink Center" in the Dell EMC CloudLink Administration Guide. If you are using Microsoft Active Directory, Amazon S3 external storage, or an S3-compatible bucket, back up your encryption keys by using tools that are specific to those environments. Keystore If you are using an external keystore, ensure that the keystore is connected before starting the upgrade process. CloudLink licenses Before you start the upgrade process, verify that the CloudLink licenses have not expired. Licenses that are past their support duration, typically one, two, or three years from the date of purchase, are blocked from being uploaded. If licenses have expired after being uploaded, all the existing CloudLink functionalities will continue to work including releasing of keys. However, new CloudLink Agent installation and encryption of machines and SDS devices cannot be performed. To reenable encryption, purchase a new license and upload it. Passwords You require the following: CloudLink secadmin password CloudLink console password One of the CloudLink Vault passwords Passwords of the encrypted VMs CloudLink Center clusters The upgrade process upgrades all servers in a cluster. Ensure that all servers are accessible. Upload the upgrade ISO to any server in a cluster. Wait until the ISO is uploaded to all servers before you begin the upgrade. Ports Before starting the upgrade process, ensure that TCP ports 80 and 1194 and UDP port 1194 are open. For more information, see the section "Software requirements for deploying CloudLink Center" in the Dell EMC CloudLink 7.0.2 Deployment Guide.