Monitoring Azure PostgreSQL flexible server

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Azure Database for PostgreSQL flexible server is a fully managed database service. Instana uses Azure PostgreSQL flexible server sensor to monitor Azure PostgreSQL flexible server in Azure. Instana comprehensively monitors the Azure PostgreSQL flexible server by providing end-to-end visibility into your environment.

For more information about other supported Azure services, see Monitoring and Instrumenting Microsoft® Azure with Azure agent.

Configuring the Azure PostgreSQL flexible server sensor

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To configure the Azure PostgreSQL flexible server sensor, complete the following steps:

  1. Enable the Azure service subscription in Instana. Update the <agentinstall_dir>/etc/instana/configuration.yaml agent configuration file as shown in the following example:

    com.instana.plugin.azure:
 enabled: true
 subscription: "[Your-Subscription-Id]"
 tenant: "[Your-Tenant-Id]"
 principals:
   - id: "[Your-Service-Principal-Account-Id]"
     secret: "[Your-Service-Principal-Secret]"

    For more information about installing the Azure agent, see Installation.

  2. Enable the Azure PostgreSQL flexible server sensor, update the <agentinstall_dir>/etc/instana/configuration.yaml agent configuration file as shown in the following example:

    com.instana.plugin.azure.postgresql:
  enabled: true

  3. Optional: Configure tags and resource groups, see Filtering services by defining tags and resource groups.

Filtering services by defining tags and resource groups

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To define multiple tags and resource groups, separate them with commas. Define the tags as a key-value pair that is separated by a colon (:). You can define multiple tags and resource groups in the configuration.yaml file. Use commas to separate multiple tags or resource groups. If you define a tag or resource group in both lists (include and exclude), the excluded list has higher priority. If you want to include all services without filtering, avoid defining any configuration.

  • To set tags for the include list, update the configuration.yaml file as shown in the following example:

    com.instana.plugin.azure.postgresql:
  include_tags: # Comma separated list of tags in key:value format (e.g. env:prod,env:staging)

  • To set tags for the exclude list, update the configuration.yaml file as shown in the following example:

    com.instana.plugin.azure.postgresql:
  exclude_tags: # Comma separated list of tags in key:value format (e.g. env:dev,env:test)

  • To set resource groups for the include list, update the configuration.yaml file as shown in the following example:

    com.instana.plugin.azure.postgresql:
 include_resource_groups: # Comma separated list of resource groups (e.g. rg_prod,rg_staging)

  • To set resource groups for the exclude list, update the configuration.yaml file as shown in the following example:

    com.instana.plugin.azure.postgresql:
  exclude_resource_groups: # Comma separated list of resource groups (e.g. rg_dev,rg_test)
Note: When you set filters for Azure PostgreSQL flexible server, it takes precedence over the common filter for all Azure services. For more information, see Azure Configuration.

Disabling the Azure PostgreSQL flexible server sensor

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To disable monitoring the Azure PostgreSQL flexible server, update the <agentinstall_dir>/etc/instana/configuration.yaml agent configuration file as shown in the following example:

com.instana.plugin.azure.postgresql:
  enabled: false

Viewing metrics

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To view the metrics, complete the following steps:

  1. From the navigation menu in the Instana UI, select Infrastructure.
  2. Click a host that is monitored.

You can see a host dashboard with all the collected metrics and monitored processes.

Configuration data

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Postgresql server details Description
Name Name of the PostgreSQL server
Resource Group Resource group of the PostgreSQL server
Location Location of the PostgreSQL server
Type Type of the resource
State State of the PostgreSQL server.
Max Connections Maximum number of concurrent connections to the database server(25-5000)
Version Version of PostgreSQL server
SubscriptionID Subscription ID of the Azure account

Performance metrics

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Azure Database for PostgreSQL flexible server is equipped with built-in performance monitoring and alerting features. All Azure metrics have a one-minute frequency, each providing 30 days of history. Two types of metrics are available, default metrics and enhanced metrics. The default metrics are available for all PostgreSQL flexible servers, but you need to enable enhanced metrics. To enable those metrics, which are not enabled by default, set the server parameter metrics.collector_database_activity to ON. This parameter is dynamic, and it doesn't require an instance restart.

Instana monitors the following enhanced metrics:

  • deadlocks
  • longest_query_time_sec
  • logical_replication_delay_in_bytes
Metric Name Metric ids Unit Aggregation Description
Connections
Active active_connections Count Average Total number of connections to the database server, including all connection states such as active, idle, and others, as seen in pg_stat_activity view
Failed connections_failed Count Total Number of failed connections.
Succeeded connections_succeeded Count Total Number of succeeded connections.
CPU
Used cpu_percent Percent Average Percentage of CPU in use.
Memory
Used memory_percent Percent Average Percentage of memory in use.
Deadlocks
Count deadlocks Count Total Number of deadlocks that are detected in this database.
Throughput
Read read_throughput Count Average Bytes read per second from the data disk during monitoring period.
Write write_throughput Count Average Bytes written per second to the data disk during monitoring period.
Network
Ingress network_bytes_ingress Bytes Total Amount of incoming network traffic.
Egress network_bytes_egress Bytes Total Amount of outgoing network traffic.
Storage
Used storage_used Bytes Average Amount of storage space that's used. The storage that's used by the service can include the database files, transaction logs, and the server logs.
Free storage_free Bytes Average Amount of storage space that's available.
Percent storage_percent Percent Average Percent of storage space that's used. The storage that's used by the service can include database files, transaction logs, and server logs.
Backup Storage Used backup_storage_used Bytes Average Amount of backup storage used. This metric represents the sum of storage that's consumed by all the full backups, differential backups, and log backups that are retained based on the backup retention period that's set for the server.
IOPS
Read read_iops Count Average Number of data disk I/O read operations per second.
Write write_iops Count Average Number of data disk I/O write operations per second.
Count iops Count Average Number of I/O operations to disk per second.
Logical Replication Delay
Bytes logical_replication_delay_in_bytes Bytes Maximum Maximum lag across all logical replication slots
Longest Query Time
Seconds longest_query_time_sec Seconds Maximium The age in seconds of the longest query that is currently running