es Bootstrap the cluster using an initial set of master-eligible nodes

To bootstrap a cluster using an initial set of master-eligible nodes in Elasticsearch, you need to follow these steps:

Install Elasticsearch on all the master-eligible nodes in the cluster. You can download the Elasticsearch package from the official Elastic website and follow the installation instructions for your operating system.
Configure the Elasticsearch nodes by modifying the elasticsearch.yml configuration file. You need to set the following properties on all the master-eligible nodes:
```
node.name: <unique_node_name>
cluster.initial_master_nodes: [<comma_separated_list_of_master_eligible_node_names>]
```
Replace <unique_node_name> with a unique name for each node in the cluster, and <comma_separated_list_of_master_eligible_node_names> with a comma-separated list of all the master-eligible node names in the cluster. Make sure to use the same list of nodes on all the master-eligible nodes.
Start Elasticsearch on all the master-eligible nodes by running the appropriate command for your operating system. For example, on Linux, you can use the following command:
```
./bin/elasticsearch
```
This will start Elasticsearch on each node with the provided configuration.
Wait for the nodes to form a cluster. You can check the cluster status by running the following command on any of the master-eligible nodes:
```
./bin/elasticsearch-cluster-health
```
Once the cluster status is green, it means that the nodes have successfully formed a cluster.

By following these steps, you can bootstrap the cluster using an initial set of master-eligible nodes in Elasticsearch