Step 2: Configure Collector

We can now configure the log directory for the collector, by adding the db_log_location setting, similar to this:

db_log_location: [log location discovered in Step 1]

Then, use the --test-logs option of the collector to verify that log collection and parsing works:

sudo pganalyze-collector --test-logs --reload

In the successful case, the log output will look like this:

2021/02/17 11:50:27 I Running collector test with pganalyze-collector 0.36.0
2021/02/17 11:50:27 I [server1] Testing log collection (local)...
2021/02/17 11:50:33 I [server1]   Local log test successful
2021/02/17 11:50:33 I Re-running log test with reduced privileges of "pganalyze" user (uid = 107, gid = 113)
2021/02/17 11:50:34 I [server1] Testing log collection (local)...
2021/02/17 11:50:46 I [server1]   Local log test successful
2021/02/17 11:50:47 I Successfully reloaded pganalyze collector (PID 123)

The collector should now be processing logs and they should show up in pganalyze shortly.

If you get an error about your Postgres log_line_prefix, check our troubleshooting documentation.

If logs take longer than a few minutes, try restarting the collector:

sudo systemctl restart pganalyze-collector

Once ready, you will see log events on the Log Insights page in pganalyze.

Screenshot of pganalyze Log Insights feature

We recommend setting up Automated EXPLAIN as a follow-up step, to automatically EXPLAIN slow queries in Postgres.

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