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a894aec8d8
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>
167 lines
4.9 KiB
Go
167 lines
4.9 KiB
Go
// +build solaris,cgo
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package daemon
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import (
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"fmt"
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"github.com/docker/docker/container"
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"github.com/docker/docker/image"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/pkg/idtools"
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"github.com/docker/docker/pkg/parsers/kernel"
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"github.com/docker/docker/reference"
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"github.com/docker/engine-api/types"
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containertypes "github.com/docker/engine-api/types/container"
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"github.com/docker/libnetwork"
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nwconfig "github.com/docker/libnetwork/config"
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)
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//#include <zone.h>
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import "C"
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const (
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defaultVirtualSwitch = "Virtual Switch"
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platformSupported = true
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solarisMinCPUShares = 1
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solarisMaxCPUShares = 65535
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)
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func (daemon *Daemon) cleanupMountsByID(id string) error {
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return nil
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}
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func parseSecurityOpt(container *container.Container, config *containertypes.HostConfig) error {
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return nil
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}
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func setupRemappedRoot(config *Config) ([]idtools.IDMap, []idtools.IDMap, error) {
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return nil, nil, nil
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}
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func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error {
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return nil
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}
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// setupInitLayer populates a directory with mountpoints suitable
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// for bind-mounting dockerinit into the container. The mountpoint is simply an
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// empty file at /.dockerinit
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//
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// This extra layer is used by all containers as the top-most ro layer. It protects
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// the container from unwanted side-effects on the rw layer.
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func setupInitLayer(initLayer string, rootUID, rootGID int) error {
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return nil
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}
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func checkKernel() error {
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// solaris can rely upon checkSystem() below, we don't skew kernel versions
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return nil
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}
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func (daemon *Daemon) getCgroupDriver() string {
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return ""
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}
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func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
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return nil
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}
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// verifyPlatformContainerSettings performs platform-specific validation of the
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// hostconfig and config structures.
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func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
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warnings := []string{}
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return warnings, nil
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}
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// platformReload update configuration with platform specific options
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func (daemon *Daemon) platformReload(config *Config, attributes *map[string]string) {
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}
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// verifyDaemonSettings performs validation of daemon config struct
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func verifyDaemonSettings(config *Config) error {
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// checkSystem validates platform-specific requirements
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return nil
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}
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func checkSystem() error {
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// check OS version for compatibility, ensure running in global zone
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var err error
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var id C.zoneid_t
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if id, err = C.getzoneid(); err != nil {
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return fmt.Errorf("Exiting. Error getting zone id: %+v", err)
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}
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if int(id) != 0 {
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return fmt.Errorf("Exiting because the Docker daemon is not running in the global zone")
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}
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v, err := kernel.GetKernelVersion()
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if kernel.CompareKernelVersion(*v, kernel.VersionInfo{Kernel: 5, Major: 12, Minor: 0}) < 0 {
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return fmt.Errorf("Your Solaris kernel version: %s doesn't support Docker. Please upgrade to 5.12.0", v.String())
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}
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return err
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}
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// configureMaxThreads sets the Go runtime max threads threshold
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// which is 90% of the kernel setting from /proc/sys/kernel/threads-max
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func configureMaxThreads(config *Config) error {
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return nil
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}
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// configureKernelSecuritySupport configures and validate security support for the kernel
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func configureKernelSecuritySupport(config *Config, driverName string) error {
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return nil
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}
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func (daemon *Daemon) initNetworkController(config *Config, activeSandboxes map[string]interface{}) (libnetwork.NetworkController, error) {
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return nil, nil
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}
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// registerLinks sets up links between containers and writes the
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// configuration out for persistence.
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func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *containertypes.HostConfig) error {
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return nil
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}
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func (daemon *Daemon) cleanupMounts() error {
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return nil
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}
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// conditionalMountOnStart is a platform specific helper function during the
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// container start to call mount.
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func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
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return nil
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}
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// conditionalUnmountOnCleanup is a platform specific helper function called
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// during the cleanup of a container to unmount.
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func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
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return daemon.Unmount(container)
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}
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func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
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// Solaris has no custom images to register
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return nil
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}
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func driverOptions(config *Config) []nwconfig.Option {
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return []nwconfig.Option{}
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}
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func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
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return nil, nil
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}
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// setDefaultIsolation determine the default isolation mode for the
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// daemon to run in. This is only applicable on Windows
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func (daemon *Daemon) setDefaultIsolation() error {
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return nil
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}
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func rootFSToAPIType(rootfs *image.RootFS) types.RootFS {
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return types.RootFS{}
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}
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func setupDaemonProcess(config *Config) error {
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return nil
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}
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