The monitor queries for logged in users with super-privileges and kicks them out to
prevent writes to master. Normal users can stay since their writes are prevented by
read_only. Also, the master-status is removed from the master manually to signal to
routers that no more writes should go to master.
If the authentication process fails due to an inability to start a
session, it should not be counted towards the number of failed
authentication attempts.
Plugins may send additional messages during authentication. These messages
often contain notifications such as password expiration dates. Both the client
and backend side authenticators now handle such messages. The messages are not
sent to the user, only the log. The requirement that only "Password: " is queried
still stands.
SSLContext is now used everywhere except the binlogrouter which still
allocates the contexts itself. Fixing the binlogrouter's misuse of
internal structures is a rather large undertaking and for this reason the
SSLContext will be taken into use there in a separate commit.
If gtid of master is unknown (as is typical when master is down when MaxScale
starts) the domain id is guessed from the slaves instead. This is usually
safe.
All GWBUF macros that address a single link in a chain are now
simple wrappers for equivalent gwbuf_link-functions.
Next step is to drop the macros and replace their use with calls
to the functions.
SQLITE_OPEN_URI flag was missing causing the databases to be created in
disk instead of in memory. Also added info level log message from created
database in clustrixmonitor.
If a client requests an unknown binary protocol prepared statement handle,
a custom error shows the actual ID used instead of the "empty" ID of 0
that the backend sends.
The code that checked that only non-empty queries are stored in the query
queue was left out when the query queue fix was backported to 2.3. Since
MXS-2464 is caused by a still unknown bug, the runtime check should help
figure out in which cases the problem occurs.
Due to listener changes we cannot just keep on creating new
listeners with the same port over and over again.
Easiest to simply use a different port each time.
Trying to get the type mask of the QWBUF caused debug assertion in the query
classifier when using some commands. Now type mask is checked only when the
buffer contains MXS_COM_QUERY command.
