This adds support for disabling writeback cache by adding a new
DISABLE_WRITEBACK_CACHE option to "scylla-server" sysconfig file, which
makes the "scylla_prepare" script (that is run before Scylla starts up)
call perftune.py with appropriate parameters. Also add a
"--disable-writeback-cache" option to "scylla_sysconfig_setup", which
can be called by scylla-machine image scripts, for example.
Refs: #7341
Tests: dtest (next-gating)
Closes#8526
To connection-less environment, we need to add node_exporter binary
to scylla-server package, not downloading it from internet.
Related #7765Fixes#2190Closes#7796
A Linux machine typically has multiple clocksources with distinct
performances. Setting a high-performant clocksource might result in
better performance for ScyllaDB, so this should be considered whenever
starting it up.
This patch introduces the possibility of enforcing optimized Linux
clocksource to Scylla's setup/start-up processes. It does so by adding
an interactive question about enforcing clocksource setting to scylla_setup,
which modifies the parameter "CLOCKSOURCE" in scylla_server configuration
file. This parameter is read by perftune.py which, if set to "yes", proceeds
to (non persistently) setting the clocksource. On x86, TSC clocksource is used.
Fixes#4474Fixes#5474Fixes#5480
Since systemd unit can override parameters using drop-in unit, we don't need
mustache template for them.
Also, drop --disttype and --target options on install.sh since it does not
required anymore, introduce --sysconfdir instead for non-redhat distributions.
We tune NIC and disks together now. Change the sysconfig parameter to
reflect this new semantics.
However if we detect an old parameter name in the scylla-server we would
still update it thereby keeping the support for old installations.
Signed-off-by: Vlad Zolotarov <vladz@scylladb.com>
After RAID devices mounted to /var/lib/scylla, scylla-server doesn't able to
find ./conf/ directory since we haven't created symlinks on the volume.
Instead of creating symlink on scylla_raid_setup, let's specify scylla.yaml
path on program argument.
Fixes#2236
Signed-off-by: Takuya ASADA <syuu@scylladb.com>
Message-Id: <1491056110-1078-1-git-send-email-syuu@scylladb.com>
It actually doesn't called unconditionally now, (since $LOCAL_PKG is always empty) so we can safely remove this.
Signed-off-by: Takuya ASADA <syuu@scylladb.com>
