PostgreSQL logs filling up in Puppet Enterprise 2018.1.0

Since upgrading to 2018.1.0 my PostgreSQL logs are growing rapidly, up to 2GB a day.

Error messages and logs

The logs are being filled up messages similar to the following:

    2018-05-11 08:16:15.819 EDT [db:pe-puppetdb,sess:5af5880a.43bf,pid:17343,vtid:30/391,tid:65255616] STATEMENT:
    with recursive live_paths(key, path, value) as  (select key, key as path, value
    from (select (jsonb_each(stable||volatile)).* from factsets) as base_case union all
    select sub_path as key, sub_paths.path||'#~'||sub_path as path,
    sub_value as value  from (select * from (select path, case jsonb_typeof(value) when 'object'
    then (jsonb_each(value)).key when 'array'
    then generate_series(0, jsonb_array_length(value - 1))::text
    end
    as sub_path, case jsonb_typeof(value) when 'object' then (jsonb_each(value)).value when 'array'
    then jsonb_array_elements(value)
    end
    as sub_value from live_paths) as candidates where candidates.sub_path is not null)
    as sub_paths)  delete from fact_paths fp where not exists (select 1 from live_paths
    where live_paths.path = fp.path)`

Version and installation information

PE version: 2018.1.0

This issue only affects 2018.1.0. It was resolved in 2018.1.2.

Solution

Excessive temporary file logging in PosgreSQL is a known issue in PE 2018.1.0. Fix it by setting value of the log_temp_files parameter to -1 to stop logging temporary files in either Hiera or the console, but not both.

In Heira

Set the value of the log_temp_files parameter to -1 with the following steps.

1. Add the following to Hiera, by default in common.yaml: puppet_enterprise::profile::database::log_temp_files: -1

2. On the master, run puppet agent -t.

In the console

Set the value of the log_temp_files parameter to -1 with the following steps.

1. In the console, click Classification, click the + to the left of PE Infrastructure, click PE Database, click Configuration. Click Parameter name and select log_temp_files.

2. Under Value, change the value to -1.

3. Click Add parameter and Commit changes.