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moby--moby/daemon/daemon_solaris.go
Michael Crosby a894aec8d8 Add --oom-score-adjust to daemon
This adds an `--oom-score-adjust` flag to the daemon so that the value
provided can be set for the docker daemon's process.  The default value
for the flag is -500.  This will allow the docker daemon to have a
less chance of being killed before containers do.  The default value for
processes is 0 with a min/max of -1000/1000.

-500 is a good middle ground because it is less than the default for
most processes and still not -1000 which basically means never kill this
process in an OOM condition on the host machine.  The only processes on
my machine that have a score less than -500 are dbus at -900 and sshd
and xfce( my window manager ) at -1000.  I don't think docker should be
set lower, by default, than dbus or sshd so that is why I chose -500.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
2016-07-12 15:53:15 -07:00

167 lines
4.9 KiB
Go

// +build solaris,cgo
package daemon
import (
"fmt"
"github.com/docker/docker/container"
"github.com/docker/docker/image"
"github.com/docker/docker/layer"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/parsers/kernel"
"github.com/docker/docker/reference"
"github.com/docker/engine-api/types"
containertypes "github.com/docker/engine-api/types/container"
"github.com/docker/libnetwork"
nwconfig "github.com/docker/libnetwork/config"
)
//#include <zone.h>
import "C"
const (
defaultVirtualSwitch = "Virtual Switch"
platformSupported = true
solarisMinCPUShares = 1
solarisMaxCPUShares = 65535
)
func (daemon *Daemon) cleanupMountsByID(id string) error {
return nil
}
func parseSecurityOpt(container *container.Container, config *containertypes.HostConfig) error {
return nil
}
func setupRemappedRoot(config *Config) ([]idtools.IDMap, []idtools.IDMap, error) {
return nil, nil, nil
}
func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error {
return nil
}
// setupInitLayer populates a directory with mountpoints suitable
// for bind-mounting dockerinit into the container. The mountpoint is simply an
// empty file at /.dockerinit
//
// This extra layer is used by all containers as the top-most ro layer. It protects
// the container from unwanted side-effects on the rw layer.
func setupInitLayer(initLayer string, rootUID, rootGID int) error {
return nil
}
func checkKernel() error {
// solaris can rely upon checkSystem() below, we don't skew kernel versions
return nil
}
func (daemon *Daemon) getCgroupDriver() string {
return ""
}
func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
return nil
}
// verifyPlatformContainerSettings performs platform-specific validation of the
// hostconfig and config structures.
func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
warnings := []string{}
return warnings, nil
}
// platformReload update configuration with platform specific options
func (daemon *Daemon) platformReload(config *Config, attributes *map[string]string) {
}
// verifyDaemonSettings performs validation of daemon config struct
func verifyDaemonSettings(config *Config) error {
// checkSystem validates platform-specific requirements
return nil
}
func checkSystem() error {
// check OS version for compatibility, ensure running in global zone
var err error
var id C.zoneid_t
if id, err = C.getzoneid(); err != nil {
return fmt.Errorf("Exiting. Error getting zone id: %+v", err)
}
if int(id) != 0 {
return fmt.Errorf("Exiting because the Docker daemon is not running in the global zone")
}
v, err := kernel.GetKernelVersion()
if kernel.CompareKernelVersion(*v, kernel.VersionInfo{Kernel: 5, Major: 12, Minor: 0}) < 0 {
return fmt.Errorf("Your Solaris kernel version: %s doesn't support Docker. Please upgrade to 5.12.0", v.String())
}
return err
}
// configureMaxThreads sets the Go runtime max threads threshold
// which is 90% of the kernel setting from /proc/sys/kernel/threads-max
func configureMaxThreads(config *Config) error {
return nil
}
// configureKernelSecuritySupport configures and validate security support for the kernel
func configureKernelSecuritySupport(config *Config, driverName string) error {
return nil
}
func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
return nil, nil
}
// registerLinks sets up links between containers and writes the
// configuration out for persistence.
func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *containertypes.HostConfig) error {
return nil
}
func (daemon *Daemon) cleanupMounts() error {
return nil
}
// conditionalMountOnStart is a platform specific helper function during the
// container start to call mount.
func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
return nil
}
// conditionalUnmountOnCleanup is a platform specific helper function called
// during the cleanup of a container to unmount.
func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
return daemon.Unmount(container)
}
func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
// Solaris has no custom images to register
return nil
}
func driverOptions(config *Config) []nwconfig.Option {
return []nwconfig.Option{}
}
func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
return nil, nil
}
// setDefaultIsolation determine the default isolation mode for the
// daemon to run in. This is only applicable on Windows
func (daemon *Daemon) setDefaultIsolation() error {
return nil
}
func rootFSToAPIType(rootfs *image.RootFS) types.RootFS {
return types.RootFS{}
}
func setupDaemonProcess(config *Config) error {
return nil
}