Difference in load configuration for watch delay tests show how huge the
impact is. Even with random write scheduler grpc under http
server can only handle 500 KB with 2 seconds delay. On the other hand,
separate grpc server easily hits 10, 100 or even 1000 MB within 100 miliseconds.
Priority write scheduler that was used in most previous releases
is far worse than random one.
Tests configured to only 5 MB to avoid flakes and taking too long to fill
etcd.
Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>
To avoid inconsistant behavior during cluster upgrade we are feature
gating persistance behind cluster version. This should ensure that
all cluster members are upgraded to v3.6 before changing behavior.
To allow backporting this fix to v3.5 we are also introducing flag
--experimental-enable-lease-checkpoint-persist that will allow for
smooth upgrade in v3.5 clusters with this feature enabled.
Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>
This makes it possible to run an etcd node for testing and development
without placing lots of load on the file system.
Fixes#11930.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
Make log level configurable, and deprecate "debug" flag in v3.5.
And adds more warnings on flags that's being deprecated in v3.5.
Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
To remove the dependency on ghodss/yaml. Replaced this dependency with sigs.k8s.io/yaml.
This wil help to remove the ghodss/yaml dependency from main kubernetes repository.
xref: https://github.com/kubernetes/kubernetes/issues/77024
systemd/journal should be configured manually.
Interpreting PPID 1 as systemd unit is wrong,
especially when embedded etcd runs under Docker
container. For such case, every single log write
will error and fall back to stderr, which is
inefficient.
Instead, add "systemd/journal" log output option
and returns error if systemd/journal socket cannot
be found.
"--logger=zap --log-outputs=default" will only error
for v3.4, since zap logger is still experimental.
v3.5 deprecates capnslog and changes "--log-outputs"
default value to "--log-outputs=stderr".
Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
"--log-output default,a.log" should error out when etcd
runs as a systemd unit. We expect 'default' to be overridden
explicitly.
Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
- Add/Document "logger" to support structured logging.
- This makes functional tests run easier, since zap logger
provides built-in log redirect to files.
- "etcd --logger-option=zap" to enable structured logging.
- Current "capnslog" will still be used as "default".
- We may switch the default or deprecate "capnslog" in v3.5.
- Either way, will clearly be documented.
Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
