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MXS-1772 Document netmask limitations

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Only mentioned in the MySQL authenticator section, although the limitation
is likely in all authenticators.
This commit is contained in:
Esa Korhonen
2018-05-07 16:37:43 +03:00
parent 11e20f9cca
commit bcbb823ab3
1 changed files with 7 additions and 2 deletions
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Documentation/About/Limitations.md
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@ -88,14 +88,19 @@ different backend authentication module is not supported.
### Limitations in the MySQL authenticator (MySQLAuth)
* MySQL old style passwords are not supported. MySQL versions 4.1 and newer use a
new authentication protocol which does not support pre-4.1 style passwords.
* MySQL old style passwords are not supported. MySQL versions 4.1 and newer use
a new authentication protocol which does not support pre-4.1 style passwords.
* When users have different passwords based on the host from which they connect
MariaDB MaxScale is unable to determine which password it should use to connect
to the backend database. This results in failed connections and unusable
usernames in MariaDB MaxScale.
* Only a subset of netmasks are supported for the *Host*-column in the
*mysql.user*-table (and related tables). Specifically, if the *Host* is of the
form `base_ip/netmask`, then the netmask must only contain the numbers 0 or 255.
For example, a netmask of 255.255.255.0 is fine while 255.255.255.192 is not.
## Filter limitations
Filters are not guaranteed to receive complete MySQL packets if they are used