Xen ECS EOS
- Why will Xen ECSs be EOS?
Since all versions of the Xen virtualization platform used by Huawei Cloud have been end of service (EOS), Huawei Cloud cannot obtain patch updates or community support. After detecting new security risks, Huawei Cloud cannot provide patches and technical support for users, which is risky to user services. Therefore, Xen ECSs on Huawei Cloud are EOD accordingly.
- What are the impacts if I continue to use Xen ECSs?
- After the Xen virtualization platform is EOS, Huawei Cloud cannot provide patch updates and technical support for newly detected security risks. As a result, security risks may occur in user services.
- New disks and NICs cannot be attached to existing Xen ECSs when the ECSs are running.
- The backups of an existing Xen ECS cannot be used to create Xen ECSs, and the KVM ECSs created using a Xen ECS backup cannot be started.
- Which virtualization platform will be used to replace Xen?
Huawei Cloud will use KVM to replace Xen. Compared with Xen, KVM provides more functions, better stability, and higher performance. KVM ECSs surpass Xen ECSs in:
- Fault detection
- Live migration
- Remote high availability (HA)
KVM can better meet the cloud computing requirements. The majority number of users are using KVM, and most Xen users have switched from Xen to KVM.
- What should I do with my existing Xen ECSs?
Change a Xen ECS to a KVM ECS by modifying specifications on the ECS console.
- Does the price remain unchanged after I change a Xen ECS to a KVM ECS?
Modifying specifications will change how much you need to pay for the ECS. For details, see Pricing of a Changed Specification.
- Which ECSs require specifications modification?
- C1, C2, M1, and S1 Xen ECSs require specifications modification. Table 2 lists recommended KVM flavors. Select target ECS flavors by region.
- To ensure proper running of SAP services, the SUSE-based large-memory ECSs for SAP certification, including H1, E1, E2, and ET2 ECS series, are not included in this specifications modification.
- GPU-accelerated G1 ECSs are not included in this specifications modification.
Table 1 Xen ECS series Requiring Specifications Modification
Not Requiring Specifications Modification
C1
C2
M1
S1
H1
E1
E2
ET2
G1
Table 2 Recommended KVM flavors Source Xen Flavor
Target KVM Flavor (Recommended 1)
Target KVM Flavor (Recommended 2)
c1.medium
s3.small.1
s6.small.1
c1.large
s3.large.2
s6.large.2
c1.xlarge
s3.xlarge.2
s6.xlarge.2
c1.2xlarge
s3.2xlarge.2
s6.2xlarge.2
c1.4xlarge
s3.4xlarge.2
N/A
c1.8xlarge
c3.8xlarge.2
c6.8xlarge.2
c2.medium
s3.medium.2
s6.medium.2
c2.large
s3.large.2
s6.large.2
c2.xlarge
s3.xlarge.2
s6.xlarge.2
c2.2xlarge
s3.2xlarge.2
s6.2xlarge.2
c2.4xlarge
s3.4xlarge.2
N/A
c2.8xlarge
c3.8xlarge.2
c6.8xlarge.2
m1.medium
m3.large.8
m6.large.8
m1.large
m3.large.8
m6.large.8
m1.xlarge
m3.xlarge.8
m6.xlarge.8
m1.2xlarge
m3.2xlarge.8
m6.2xlarge.8
m1.4xlarge
m3.4xlarge.8
m6.4xlarge.8
s1.medium
s3.medium.4
s6.medium.4
s1.large
s3.large.4
s6.large.4
s1.xlarge
s3.xlarge.4
s6.xlarge.4
s1.2xlarge
s3.2xlarge.4
s6.2xlarge.4
s1.4xlarge
s3.4xlarge.4
N/A
s1.8xlarge
c3.8xlarge.4
c6.8xlarge.4
- How does the change from a Xen ECS to a KVM ECS affect services?
- Before changing a Xen ECS to a KVM ECS, stop the ECS, which will interrupt services running on the ECS. After the change is complete, start the ECS to restore service running.
- After the change is complete, the underlying virtualization platform is changed from Xen to KVM, which does not affect services.
- How can I change a Xen ECS to a KVM ECS?
Before changing a Xen ECS to a KVM ECS, manually install desired drivers on the ECS. If there are no drivers installed on the ECS, the ECS will be unavailable (the OS cannot be started) after the specifications are modified. After drivers are installed, do as follows:
- Windows
- Create a system disk snapshot.
- Check the UVP VMTools version.
- Install or upgrade UVP VMTools.
- Modify specifications.
- Check disk attachment.
For details, see Changing a Xen ECS to a KVM ECS (Windows).
- Linux
For Linux, you are advised to use a script to automatically install desired drivers for specifications modification.
- Using a script for automatic driver installation
- Create a system disk snapshot.
- Use a script to automatically install drivers.
- Modify specifications.
- Check disk attachment.
For details, see Automatically Changing a Xen ECS to a KVM ECS (Linux).
- Manually installing drivers
- Create a system disk snapshot.
- Install drivers.
- Verify the ECS configuration.
- Modify specifications.
- Check disk attachment.
For details, see Manually Changing a Xen ECS to a KVM ECS (Linux).
- Using a script for automatic driver installation
- Windows
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