Alibaba Cloud Elasticsearch allows you to upgrade the version or kernel of your Alibaba Cloud Elasticsearch cluster. This ensures that your business is up-to-date. This topic describes how to upgrade the version or kernel of an Elasticsearch cluster and describes the limits on versions that can be upgraded and the supported cluster restart modes.
Limits on cluster versions
The following table lists limits on the versions for an upgrade.
Source version | Destination version |
---|---|
V5.5.3 | V5.6.16 |
V5.6.16 | V6.3.2 |
V6.3.2 | V6.7.0 |
Notice If the version of your Elasticsearch cluster does not meet the preceding requirements,
you cannot upgrade the version. We recommend that you cancel the subscription of or
release the cluster and purchase a cluster of the desired version.
Cluster restart modes
When you upgrade the version or kernel of your cluster, the system restarts the cluster.
The following table describes the restart modes that are provided by Alibaba Cloud
Elasticsearch.
Restart mode | Principle | Risk and recommendation | Scenario |
---|---|---|---|
Blue-green restart | The system adds nodes of a later version to the cluster, migrates data stored on original nodes to the added nodes, and removes the original nodes from the cluster. |
|
|
Full restart | The system disables all nodes in the cluster and restarts the cluster. | During an upgrade, the system installs a TLS certificate on your cluster. This may interrupt your services but does not cause data loss. The
upgrade duration depends on the specifications of the cluster and the volume of data
stored on the cluster. We recommend that you plan the upgrade in advance.
Note A full restart does not change the IP addresses of the nodes in the cluster. Therefore,
you do not need to update the IP addresses.
|
V5.6.16 to V6.3.2 |
Procedure
Upgrade the version or kernel of a cluster
FAQ
- How long is required to upgrade the version of an Elasticsearch cluster?
- Can I upgrade or downgrade the version of an Elasticsearch cluster?
- Are services affected when I upgrade the version of an Elasticsearch cluster?
- When I upgrade the configuration of an Elasticsearch cluster, the system displays the following error message: UpgradeVersionMustFromConsole. What do I do?