PostgreSQL Logs Integration
To make use of the Sematext PostgreSQL Logs integration, you'll need to send parsed PostgreSQL logs to your Sematext Logs App. The easiest way is via Logagent, which can parse PostgreSQL logs out of the box.
Once data is in, you can explore it via the built-in reports:
Be sure to check out the PostgreSQL Monitoring integration as well, to get a complete view on PostgreSQL. For example, if you notice expensive queries in the logs, monitoring can tell you whether they hit the indices or they were mostly scans.
Setting up Logagent¶
With Node.js installed, you'd first need to install Logagent:
sudo npm i -g @sematext/logagent
Then, write a config file that tails your PostgreSQL logs and sends them to your PostgreSQL Logs App. Parsing happens out of the box, since we match the
# Global options options: # print stats every 60 seconds printStats: 60 # don't write parsed logs to stdout suppress: true input: files: - /var/log/postgresql/postgresql-*-main.log output: elasticsearch: module: elasticsearch # use logsene-receiver.eu.sematext.com for the EU region url: https://logsene-receiver.sematext.com indices: # send PostgreSQL logs to this Logs App YOUR_LOGS_TOKEN_GOES_HERE: - .*postgres.*\.log
logagent-setup to copy the config to
/etc/sematext/logagent.conf, then set up the init script and start Logagent:
sudo logagent-setup -c /path/to/logagent.conf
If you already have Logagent installed, you can simply append to the
files input the PostgreSQL log file, then the two lines (token+pattern) in the
elasticsearch output. In the end, restart Logagent.
Once data is in, you can explore it using the built-in reports or create your own. For example, you can use the Statement Duration report to check on your queries:
If you have trouble sending logs, try out the latest version of Logagent via
sudo npm i -g @sematext/logagent. Also, make sure Logagent is pointed to the right path and Logs App token.
If logs don't get parsed properly, or you need additional parsing, feel free to open an issue or to contribute to Logagent built-in patterns. These patterns are open-source, as well as Logagent itself.