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Backing Up Kubernetes Objects of other Clusters
In this part of the guide, we are going to demonstrate how we can backup WordPress with Velero (FSB). For WordPress, we need to backup both namespace resources (Deployments, Services, Secrets, ConfigMaps) and persistent volumes (MySQL and WordPress content).
From ECS-hosted MongoDB to DDS
DRS helps you migrate data from MongoDB databases on ECSs to DDS instances on the current cloud. With DRS, you can migrate databases online with zero downtime and your services and databases can remain operational during migration.
From On-Premises MongoDB to DDS
DRS helps you migrate data from on-premises MongoDB databases to DDS on the current cloud. With DRS, you can migrate databases online with zero downtime and your services and databases can remain operational during migration.
From Other Cloud MongoDB to DDS
DRS helps you migrate MongoDB databases from other cloud platforms to DDS on the current cloud. With DRS, you can migrate databases online with zero downtime and your services and databases can remain operational during migration.
How Do Replica Sets Achieve High Availability and Read/Write Splitting?
DDS replica set instances can store multiple duplicates to ensure data high availability and support the automatic switch of private IP addresses to ensure service high availability. To enhance the read and write performance of your client for connecting to the instance, you can use your client to read different data copies. You need to connect to replica set instances using HA connection addresses. You can also configure read/write splitting. Otherwise, the high availability and high read performance of replica set instances cannot be guaranteed.
Migrating Clusters from Other Clouds to CCE
This best practices series showcase how to migrate Kubernetes workloads from other cloud or on-premises Kubernetes environments to the Cloud Container Engine (CCE) on Open Telekom Cloud. It highlights the key considerations for moving applications, container images, and persistent data while ensuring compatibility and service continuity. This best practice focuses on leveraging Open Telekom Cloud services such as OBS and SWR, along with established tools like Velero to provide a reliable and structured migration path for Kubernetes workloads.
Migrating Container Images
Containers are growing in popularity. Many enterprises choose to build their own Kubernetes clusters. However, the O&M workload of on-premises clusters is heavy, and O&M personnel need to configure the management systems and monitoring solutions by themselves. For enterprises, managing a large number of images requires high O&M, labor, and management costs, and the efficiency is low. SoftWare Repository for Container (SWR) manages container images that function on multiple architectures, such as Linux and Arm. Enterprises can migrate their image repositories to SWR to reduce costs.
Migrating from Promtail to Grafana Alloy
With Promtail reaching end-of-life on March 2, 2026, migrating to Grafana Alloy is essential for maintaining a supported and future-proof logging infrastructure. This blueprint guides you through converting your existing Promtail configuration to Alloy and deploying it on Cloud Container Engine (CCE). If you're currently running Promtail as described in Aggregate CCE Logs with Promtail & Grafana Loki, this guide provides a clear path forward.
Migrating Kafka Services
This solution will demonstrate how you can migrate Kafka services to connect message producers and consumers to a new Kafka instance and can even migrate persisted message data to a new Kafka instance.
Migrating Service Data Across Accounts (Data Disks)
Generally, service data is stored on data disks. To migrate the data across accounts, you need to create data disk images and share them with the target account. This section uses Linux as an example to describe how to migrate service data (only data disks) across accounts in the same region.
Restoring Kubernetes Objects in a CCE Cluster
In this part of the guide, we will demonstrate how to restore a WordPress backup created with Velero (FSB) onto a target Open Telekom Cloud CCE cluster. The process includes restoring both the namespace resources (Deployments, Services, Secrets, ConfigMaps) and the persistent volumes for MySQL and WordPress content, effectively migrating the workload into a new cluster.