Configuring Cluster Monitoring

Prerequisites

• The cluster is in the Available or Processing status.
• The cluster has been running properly for more than 10 minutes.

Recommended Monitoring Metrics

• Cluster CPU and JVM usage. You are advised to configure the following monitoring metrics: average JVM heap usage, maximum JVM heap usage, average CPU usage, and maximum CPU usage.
• Cluster write and query latency and throughput. You are advised to configure the following monitoring metrics: average index latency, average index rate, average search latency, and average QPS.
• Cluster write and query queue and rejected tasks. You are advised to configure the following monitoring metrics: tasks in write queue, tasks in search queue, rejected tasks in write queue, and rejected tasks in search queue.

Creating Alarm Rules

1. Log in to the Cloud Eye console.
2. In the navigation pane on the left, choose Alarm Management > Alarm Rules.
3. In the Resource Type column, select Cloud Search Service as criteria to search for alarm rules that meet the requirements.
   Figure 1 Viewing alarm rules
   

   If no alarm rules are available, create one by referring to Creating an Alarm Rule. For details about how to set Resource Type and Dimension, see Table 1.

   Table 1 Alarm rule configuration parameter

   Parameter	Description	Remark
   Resource Type	Type of the resource that the alarm rule is created for	Select Cloud Search Service.
   Dimension	Metric dimension of the selected resource type	CSS supports two dimensions. Select a dimension as required. CSS Clusters: Alarm rules are specified by cluster. CSS Clusters - CSS Instances: Alarm rules are specified by node in a cluster.

Configuring Monitoring Metrics

1. Create a monitoring panel by referring to Creating a Dashboard. If an available monitoring panel has been created, skip this step.
2. Add CSS monitoring graphs by referring to Adding a Graph.

   For details about how to set Resource Type and Dimension, see Table 2.

   Table 2 Graph configuration parameter

   Parameter	Description	Remark
   Resource Type	Type of the resource to be monitored	Select Cloud Search Service.
   Dimension	Metric dimension	CSS supports two dimensions. Select a dimension as required. CSS Clusters: Monitoring is executed by cluster. CSS Clusters - CSS Instances: Monitoring is executed by node in a cluster.

Viewing Monitoring Metrics

1. Log in to the CSS management console.
2. Choose Clusters. Locate the target cluster and choose More > View Metric in the Operation column.
   Figure 2 Viewing metrics
   
3. Select a time range.
4. View the monitoring metrics.