From 36d003613e559bbac119eb4317bc1cefcf4ec506 Mon Sep 17 00:00:00 2001 From: "Ian Y. Choi" Date: Fri, 16 Feb 2018 13:12:48 +0000 Subject: [PATCH] [install] Mentions SQL max connection error It is worth mentioning about the maximum number of connections error messages to give hints how to deal with such kind of errors. Change-Id: Iee67650c97c40db49a1ee23ea4015d25ec380978 Closes-Bug: #1749681 --- doc/install-guide/source/environment-sql-database.rst | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/doc/install-guide/source/environment-sql-database.rst b/doc/install-guide/source/environment-sql-database.rst index 6322ca5061..cbdfd5424e 100644 --- a/doc/install-guide/source/environment-sql-database.rst +++ b/doc/install-guide/source/environment-sql-database.rst @@ -7,6 +7,15 @@ guide use MariaDB or MySQL depending on the distribution. OpenStack services also support other SQL databases including `PostgreSQL `__. +.. note:: + + If you see ``Too many connections`` or ``Too many open files`` + error log messages on OpenStack services, verify that maximum number of + connection settings are well applied to your environment. + In MariaDB, you may also need to change + `open_files_limit `__ + configuration. + .. toctree:: :glob: