When the SERVER_BEING_DRAINED bit is on, if the number of connections
to the server is 0, the state is reported as "Drained", otherwise as
"Being Drained".
Fixed the documentation on the arguments to maxkeys, which is a directory,
and added a short paragraph about alternative key file locations. Also
documented that keys are read from the directory where the `datadir`
parameter points to.
Any administrative operation, performed using maxadmin or maxctrl,
that takes longer than the watchdog timeout will cause MaxScale to
be killed and restarted by the watchdog.
The cache size now refers to the total memory used by the cache instead of
the per thread limit. This makes it easier to use as well as more
predictable by removing the dependency on the number of worker threads.
Explicitly state that servers only require `ssl_ca_cert` and that
`ssl_cert` and `ssl_key` are optional in certain cases. Updated the
wording of all parameters and removed obsolete or false documentation.
Enabling it will give a performance improvement and it offloads work from
the CPU. This leads to better and more complete utilization of system
resources.
The server allows both unencrypted and encrypted connections on the same
port. MaxScale only allows either encrypted or unencrypted
connections. The differences as well as the reasoning for this need to be
documented.
The feature was rarely used and was only useful in extremely rare
cases. The functionality can still be emulated, if for some reason needed,
by pointing `logdir` to `/dev/shm` or another tmpfs mount.
- Cannot be supported with std::thread.
- Unlikely that the default size (8MB) would ever be too small and
if it is, there is some problem.
- The stack size can be specified using 'ulimit -s' before starting
MaxScale.
Enabling it with a value of 1 should remove the vast majority of
connection related problems that appear in MaxScale. This should filter
out most of the errors caused by transient network problems.
