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Only show global warnings once

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Upon each container create I'm seeing these warning **every** time in the
daemon output:
```
WARN[0002] Your kernel does not support swap memory limit
WARN[0002] Your kernel does not support cgroup rt period
WARN[0002] Your kernel does not support cgroup rt runtime
```
Showing them for each container.create() fills up the logs and encourages
people to ignore the output being generated - which means its less likely
they'll see real issues when they happen.  In short, I don't think we
need to show these warnings more than once, so let's only show these
warnings at daemon start-up time.

Signed-off-by: Doug Davis <dug@us.ibm.com>
(cherry picked from commit ff42a2eb41)
Signed-off-by: Victor Vieux <vieux@docker.com>
This commit is contained in:
Doug Davis 2016-11-29 07:38:07 -08:00 • committed by Victor Vieux
parent e9779fd7df
commit b0970b629b
2 changed files with 6 additions and 6 deletions
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2
daemon/daemon_unix.go
View file

@ -1198,7 +1198,7 @@ func (daemon *Daemon) initCgroupsPath(path string) error {
}
path = filepath.Join(root, path)
sysinfo := sysinfo.New(false)
sysinfo := sysinfo.New(true)
if err := os.MkdirAll(path, 0755); err != nil && !os.IsExist(err) {
return err
}

10
pkg/sysinfo/sysinfo_linux.go
View file

@ -82,23 +82,23 @@ func checkCgroupMem(cgMounts map[string]string, quiet bool) cgroupMemInfo {
swapLimit := cgroupEnabled(mountPoint, "memory.memsw.limit_in_bytes")
if !quiet && !swapLimit {
logrus.Warn("Your kernel does not support swap memory limit.")
logrus.Warn("Your kernel does not support swap memory limit")
}
memoryReservation := cgroupEnabled(mountPoint, "memory.soft_limit_in_bytes")
if !quiet && !memoryReservation {
logrus.Warn("Your kernel does not support memory reservation.")
logrus.Warn("Your kernel does not support memory reservation")
}
oomKillDisable := cgroupEnabled(mountPoint, "memory.oom_control")
if !quiet && !oomKillDisable {
logrus.Warn("Your kernel does not support oom control.")
logrus.Warn("Your kernel does not support oom control")
}
memorySwappiness := cgroupEnabled(mountPoint, "memory.swappiness")
if !quiet && !memorySwappiness {
logrus.Warn("Your kernel does not support memory swappiness.")
logrus.Warn("Your kernel does not support memory swappiness")
}
kernelMemory := cgroupEnabled(mountPoint, "memory.kmem.limit_in_bytes")
if !quiet && !kernelMemory {
logrus.Warn("Your kernel does not support kernel memory limit.")
logrus.Warn("Your kernel does not support kernel memory limit")
}
return cgroupMemInfo{