FAQs

Why does the connection to the cluster fail during development?

1. Whether the network of development is connected to the cluster; 2. Whether the cluster name is correctly configured, the default configuration file cluster.name for the cluster ** resource ID **.

Does UES support cross-regional and cross-data center access?

UElasticsearch does not support access from cross-regional user networks and mutual visits under different VPCs, but it supports access from different data centers in the same region.

Can I access cluster nodes by SSH login from a cloud host in the same availability zone?

No, cluster nodes do not support ssh login.

How can the UElasticsearch cluster be accessed from the public network?

No public network access to the cluster function is currently provided.

Does the ULB product support UElasticsearch cluster load balancing access?

ULB access is not currently provided. The ULB’s seventh protocol provides only public network access, and the fourth protocol’s internal network does not support UElasticsearch product forwarding.

Why does the built-in head plug-in of UES fail to connect to the cluster?

You must ensure that the network of the head plugin management platform can access the entered ES connection address. It is strongly discouraged to build a public network proxy to access the UElasticsearch cluster for the sake of using the head plugin.

When should I choose a cluster with a separate main node?

When the number of nodes is more than 5, it is recommended to choose a cluster type with a separate master node (the cluster includes an independent master node). The minimum default configuration for master nodes can be selected, and higher-level configuration can be considered when the number of nodes is more than 20.

Does the cluster support expansion? Can the configuration of the node be modified? Does the master node support expansion?

The cluster supports adding nodes, but it does not support deleting nodes from the console; the node supports upgrading configuration but does not support downgrading configuration; the master node does not support expansion, nor does it support upgrading/downgrading configuration. The default configuration of expanding nodes in the cluster is the same as the original data node configuration, and it does not support choosing other configurations.

What is the difference between the various types of SSD disk nodes?

The types of SSD disk nodes are: memory-intensive machine model, ordinary machine model, storage-intensive machine model. There are no fundamental differences between the three categories, they are only divided into three categories for easy management, and you can choose the appropriate CPU, memory, and storage capacity based on actual business needs.

What is the most reasonable setting for the number of primary shard and replicas in the index?

UElasticsearch cluster defaults to 5 primary shards and 1 replica. The recommended number of primary shards >= the number of data nodes, but it should not exceed three times the number of data nodes, and the number of replicas should be less than the number of data nodes.

Does UES support tool extensions, such as the integration of Logstash?

ELK’s integrated use is supported, and Kibana is already integrated inside UElasticsearch. There is no special requirement for the version of Logstash, but it is recommended to use the same version.