Monitoring a Managed Service for Kubernetes cluster using Filebeat OSS

Filebeat OSS is a plugin for collecting and forwarding logs to the OpenSearch ecosystem. Installed in a Managed Service for Kubernetes cluster, Filebeat collects cluster and pod logs, and forwards them to Yandex Managed Service for OpenSearch.

To set up Managed Service for Kubernetes cluster monitoring with Filebeat OSS:

1. Install Filebeat OSS.
2. Check the result.

If you no longer need the resources you created, delete them.

Getting startedGetting started

1. Create a Managed Service for Kubernetes cluster and a node group.

   Manually

   Terraform

   1. If you do not have a network yet, create one.

   2. If you do not have any subnets, create them in the availability zones where your Managed Service for Kubernetes cluster and node group will be created.

   3. Create security groups for the Managed Service for Kubernetes cluster and its node groups.

      Warning

      The configuration of security groups determines the performance and availability of the cluster and the services and applications running in it.

   4. Create a Managed Service for Kubernetes cluster and a node group in any suitable configuration. When creating them, specify the security groups prepared in advance.

   1. If you do not have Terraform yet, install it.

   2. Download the file with provider settings. Place it in a separate working directory and specify the parameter values.

   3. Download the k8s-cluster.tf configuration file of the Managed Service for Kubernetes cluster to the same working directory. The file describes:

      • Network.

      • Subnet.

      • Managed Service for Kubernetes cluster.

      • Service account required for a Managed Service for Kubernetes cluster and node group.

      • Security groups which contain rules required for the Managed Service for Kubernetes cluster and its node groups.

        Warning

        The configuration of security groups determines the performance and availability of the cluster and the services and applications running in it.

   4. Specify the following in the configuration file:

      • Folder ID.
      • Kubernetes version for a Managed Service for Kubernetes cluster and node groups.
      • Managed Service for Kubernetes cluster CIDR.
      • Name of the service account. It must be unique within the folder.

   5. Run the terraform init command in the directory with the configuration files. This command initializes the provider specified in the configuration files and enables you to use the provider resources and data sources.

   6. Make sure the Terraform configuration files are correct using this command:

      terraform validate
      

      If there are any errors in the configuration files, Terraform will point them out.

   7. Create the required infrastructure:

      1. Run the command to view planned changes:

         terraform plan
         

         If the resource configuration descriptions are correct, the terminal will display a list of the resources to modify and their parameters. This is a test step. No resources are updated.

      2. If you are happy with the planned changes, apply them:

         1. Run the command:

            terraform apply
            

         2. Confirm the update of resources.

         3. Wait for the operation to complete.

      All the required resources will be created in the specified folder. You can check resource availability and their settings in the management console.

2. Install kubectl and configure it to work with the created cluster.

3. Create a Managed Service for OpenSearch cluster with any suitable configuration.

Install Filebeat OSSInstall Filebeat OSS

Install Filebeat OSS by following this guide.

Check the resultCheck the result

Make sure that the Managed Service for OpenSearch cluster is receiving logs from the Managed Service for Kubernetes cluster:

curl \
  --user admin:<admin_password_to_Managed_Service_for_OpenSearch_cluster> \
  --cacert CA.pem \
  --request GET 'https://<OpenSearch_DATA_host_name>:9200/_cat/indices?v'

The list should contain filebeat-7.12.1-<log_date> indexes with the Managed Service for Kubernetes cluster logs.

Delete the resources you createdDelete the resources you created

Some resources are not free of charge. Delete the resources you no longer need to avoid paying for them.

Delete the Managed Service for OpenSearch cluster.

Delete the other resources depending on how they were created: