Azure database postgresql9/2/2023 Provision Windows and Linux VMs in secondsĮnable a secure, remote desktop experience from anywhere Explore some of the most popular Azure products Your feedback and questions are welcome! You can always reach out to our team of Postgres experts at Ask Azure DB for PostgreSQL. While a perfect logging configuration will be a matter of trial and error, what I have explained here is how you can configure logs, set up logging destination and query logs via Azure log analytics. For a complete list of statement level logging parameters, please refer the Postgres documentationĪzure Database for PostgreSQL logs provides useful information about database activity, that can help in performance tuning and troubleshooting. If you need to set the parameters to these values, make sure you are only doing so for a short period of time for troubleshooting purposes, and closely monitor the storage space, throughout. On a busy production instance logging thousands of SELECT per minutes, this can generate a huge amount of logging information. It may be tempting to set this to “all” to capture every SQL statement running on the server, but this may not always be a good idea in reality. Log_statement = 'off' | 'ddl' | 'mod' | 'all' This is when your server is doing the additional work for logging each SQL statement. Our recommendation is to be very careful when enabling statement-logging options. Verbose logging tends to cause performance issues, especially if you log all statements. If you are interested in sending logs to Azure Storage, see the logs storage account article or For Event Hubs, see the stream Azure logs article. To create an alert for this query, click '+ New alert rule' Search for errors in the last 6 hours. The Postgres logs use the AzureDiagnostics collection mode, so they can be queried from the AzureDiagnostics table. For this article we will use Log Analytics.įor Log Analytics, logs are sent to the workspace you selected. The way you access the logs depends on which endpoint you choose. Viewing logs via Azure Log Analytics (LA) This can be configured in diagnostic settings. Once configured, the logs can be shipped to a storage server, or to log analytics service. For more information about server parameters, please refer When To Log and What To Log sections of the Postgres documentation. You can configure these parameters as per your application requirements. The Azure PostgreSQL server parameter includes several logging server parameters that control the PostgreSQL logging behavior. This post provides more details about enabling this logging and its benefits. This log information can help troubleshoot potential performance and auditing issues while using the database. These logging parameters help capture information such as connections and disconnections, schema modification queries, slow queries with the duration, queries taking time because they are waiting of locks, queries consuming temporary disk storage, and the backend autovacuum process consuming resources. In addition to the default logging, you can modify PostgreSQL logging parameters to capture beneficial information in identifying and solving issues such as deficient performance and security audits. These incorrectly formatted queries generate error messages in the logs, which can help identify the problematic application code. ![]() For example, if you converted a legacy application from Oracle to PostgreSQL, some queries may not convert correctly to PostgreSQL syntax. These error messages can help identify various application issues. SQL query failures, failed login attempts, and deadlocks are captured in the logs by default. PostgreSQL generates event logs that contain useful information. This post discusses how you can configure Azure Database for PostgreSQL logs and shares methods to access these log files using log analytics service. You can ship logs to a storage server, or to log analytics service. Azure PostgreSQL logs are available on every node of a flexible server. ![]() There are various scenarios to use the logs, such as identifying errors, troubleshoot suboptimal performance, and repair configuration issues. Note: This blog post applies to both Single Server and Flexible Server.Īzure Database for PostgreSQL allows you to configure and access PostgreSQL server logs. This article explains how to use Azure Portal to configure and view logs for your Azure database for PostgreSQL.
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