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https://issues.apache.org/jira/browse/IGNITE-13796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksim Timonin updated IGNITE-13796:
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Fix Version/s: 2.10
> Update docs for the kubernetes module
> -------------------------------------
>
> Key: IGNITE-13796
> URL: https://issues.apache.org/jira/browse/IGNITE-13796
> Project: Ignite
> Issue Type: New Feature
> Components: documentation
> Affects Versions: 2.10
> Reporter: Maksim Timonin
> Assignee: Nikita Safonov
> Priority: Major
> Fix For: 2.10
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Docs related to the ticket IGNITE-13204. Before this change it was impossible
> to rely on partition awareness feature [1] on thin clients within Kubernetes
> environment. The reason was a Kubernetes cluster can scale dynamically but
> thin client was able to configure only static list of addresses in moment of
> start. The ticket fix it, provide opportunity to dynamically change list of
> addresses known to thin clients. That ticket relates only to thin clients
> started *within* Kubernetes cluster. Thin clients that are running outside of
> Kubernetes cluster must be configured the same way as before (with static
> list of addresses, usually it is an address of Ingress or other load
> balancer), it's impossible to provide partition awareness feature for them as
> there are no directly access to pods.
> The ticket:
> 1. Introduced class KubernetesConnectionConfiguration that represents common
> settings to connect within Kubernetes cluster.
> 2. There are 2 classes that use the configuration class to configure the
> connection:
> * TcpDiscoveryKubernetesIpFinder is responsible to configure Ignite nodes.
> * ThinClientKubernetesAddressFinder is responsible to configure Thin clients
> in case when partition awareness feature is enabled.
> 3. Introduced ClientAddressFinder interface that provides dynamic list of
> address to thin client. Generally, every user can implement this interface
> and provide dynamic list of addresses in any environment. Ignite provides the
> only implementation of this interface - ThinClientKubernetesAddressFinder
> class, that works for Kubernetes environment. This interface should be useful
> for any scaling environment.
>
> There was a refactoring of TcpDiscoveryKubernetesIpFinder to enable to use it
> this configuration class, so some methods of the Finder are marked as
> deprecated.
> [1]
> [https://ignite.apache.org/docs/latest/thin-clients/java-thin-client#partition-awareness]
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