Lab
A Cloud Guru

Diagnose and Repair Elasticsearch Indices

When configured correctly, Elasticsearch clusters are highly available and fault tolerant. That doesn't necessarily mean they are impervious to failure. Human error and hardware failure are always a possibility. Troubleshooting data availability issues on a distributed system can be a challenge. In this hands-on lab, we will use the cluster allocation explain API to demystify the troubleshooting process of shard allocation issues in Elasticsearch.

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Path Info

Level

Intermediate

Duration

1h 30m

Published

Jul 17, 2020

Challenge

Troubleshoot any red-state indices.
Using the Secure Shell (SSH), log in to the data-1node ascloud_user` via the public IP address.

Start the elasticsearch node with:
```
sudo systemctl start elasticsearch
```
Use the Kibana console tool to execute the following:
```
PUT logs-02/_settings
{
  "number_of_replicas": 1
}
```
Challenge

Troubleshoot any yellow-state indices.
Use the Kibana console tool to execute the following:
```
PUT logs-01/_settings
{
  "number_of_replicas": 1
}
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

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