How To Solve Issues Related to Log – Waiting for elected master node to setup local exporter does it have x-pack installed

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Troubleshooting background

To troubleshoot Elasticsearch log “Waiting for elected master node to setup local exporter does it have x-pack installed” it’s important to know common problems related to Elasticsearch concepts: master, node, plugin. See below-detailed explanations complete with common problems, examples and useful tips.

Nodes in Elasticsearch

What it is

Simply explained a node is a single server that is part of a cluster. Each node is assigned with one or more roles, which describes the node responsibility and operations – Data nodes stores the data, and participates in the cluster’s indexing and search capabilities, while master nodes are responsible for managing the cluster activities and storing the cluster state, including the metadata.

While it’s possible to run several Node instances of Elasticsearch on the same hardware, it’s considered a best practice to limit a server to a single running instance of Elasticsearch.

Nodes connect to each other and form a cluster by using a discovery method. 

Roles
Master node

Master nodes are in charge of cluster-wide settings and changes  – deleting or creating indices and fields, adding or removing nodes and allocating shards to nodes. Each cluster has a single master node that is elected from the master eligible nodes using a distributed consensus algorithm and is reelected if the current master node fails.

Coordinator Node (aka client node)

Coordinator Node – is a node that does not hold any configured role. It doesn’t hold data, not part of the master eligible group nor execute ingest pipelines. Coordinator node serves incoming search requests and is acting as the query coordinator – running the query and fetch phases, sending requests to every node which holds a shard being queried. The client node also distributes bulk indexing operations and route queries to shards copies based on the nodes responsiveness.

Plugin in Elasticsearch

What it is

Plugins are used to extend the functionality of Elasticsearch. In addition to the core plugins available to you, it is possible to write custom plugins as well. Plugins are generated in a zip format with the mandatory file structure.

Examples:
  • Core Plugins: Xpack for Security and monitoring, Discovery plugins for EC2
  • Adding S3 plugin for storing snapshots on S3
sudo bin/elasticsearch-plugin install repository-s3
  • Adding HDFS plugin for storing snapshots on HDFS
sudo bin/elasticsearch-plugin install repository-hdfs
  • Removing a plugin
sudo bin/elasticsearch-plugin remove repository-hdfs
Notes:
  • Plugins are installed using the Elasticsearch-plugin script, which enables actions such as  listing, removing and installing plugins.
  • Core plugins can be installed simply by providing the name of the plugin to the Elasticsearch-plugin command.
  • You can also download the plugin manually and then install it using the elasticsearch-plugin install command, providing the file name/path of the plugin’s source file.
  • When a plugin is removed, you will need to restart the elasticsearch node(s) in order to complete the removal process.
Common Problems:
  • You need to install the required plugins in your Elasticsearch deployment before moving it to production machines. (as it’s likely your production machines are behind a proxy and it’s very hard to get plugins installed behind a proxy).
  • The same is true when you are going to deploy elasticsearch using Docker images, you will most likely be rebuilding the standard image and including your required plugins in the custom docker build. Make sure the docker build is run on a build machine that is not behind a proxy, otherwise the plugin installation will fail during docker build.

Click here to get to our list of the Most frequent issues caused by Elasticsearch Plugins


To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

Solved Rebuilt Node Logs Say Waitin
discuss.elastic.co/t/solved-rebuilt-node-logs-say-waiting-for-local-exporter/92482

 

Waiting For Elected Master Node Nul
discuss.elastic.co/t/waiting-for-elected-master-node-null-to-setup-local-exporter-default-local/85498

 


Log Context

Log ”Waiting for elected master node to setup local exporter does it have x-pack installed” classname is LocalExporter.java
We have extracted the following from Elasticsearch source code to get an in-depth context :

         if (clusterService.state().nodes().isLocalNodeElectedMaster()) {
            setup = setupIfElectedMaster(clusterState; templates; clusterStateChange);
        } else if (setupIfNotElectedMaster(clusterState; templates.keySet()) == false) {
            // the first pass will be false so that we don't bother users if the master took one-go to setup
            if (waitedForSetup.getAndSet(true)) {
                logger.info("waiting for elected master node [{}] to setup local exporter [{}] (does it have x-pack installed?)";
                            clusterService.state().nodes().getMasterNode(); config.name());
            }

            setup = false;
        }






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