[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
This commit is contained in:
Ian Y. Choi 2018-02-16 13:12:48 +00:00
parent 49fdad8dc8
commit 36d003613e
1 changed files with 9 additions and 0 deletions

View File

@ -7,6 +7,15 @@ guide use MariaDB or MySQL depending on the distribution. OpenStack
services also support other SQL databases including
`PostgreSQL <https://www.postgresql.org/>`__.
.. 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 <https://mariadb.com/kb/en/library/server-system-variables/#open_files_limit>`__
configuration.
.. toctree::
:glob: