Golang HostConfig.CPUShares方法代碼示例

// adaptContainerSettings is called during container creation to modify any
// settings necessary in the HostConfig structure.
func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
	if adjustCPUShares && hostConfig.CPUShares > 0 {
		// Handle unsupported CPUShares
		if hostConfig.CPUShares < linuxMinCPUShares {
			logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, linuxMinCPUShares)
			hostConfig.CPUShares = linuxMinCPUShares
		} else if hostConfig.CPUShares > linuxMaxCPUShares {
			logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, linuxMaxCPUShares)
			hostConfig.CPUShares = linuxMaxCPUShares
		}
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap == 0 {
		// By default, MemorySwap is set to twice the size of Memory.
		hostConfig.MemorySwap = hostConfig.Memory * 2
	}
	if hostConfig.ShmSize == 0 {
		hostConfig.ShmSize = container.DefaultSHMSize
	}
	var err error
	opts, err := daemon.generateSecurityOpt(hostConfig.IpcMode, hostConfig.PidMode, hostConfig.Privileged)
	if err != nil {
		return err
	}
	hostConfig.SecurityOpt = append(hostConfig.SecurityOpt, opts...)
	if hostConfig.MemorySwappiness == nil {
		defaultSwappiness := int64(-1)
		hostConfig.MemorySwappiness = &defaultSwappiness
	}
	if hostConfig.OomKillDisable == nil {
		defaultOomKillDisable := false
		hostConfig.OomKillDisable = &defaultOomKillDisable
	}

	return nil
}

// adaptContainerSettings is called during container creation to modify any
// settings necessary in the HostConfig structure.
func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
	if hostConfig == nil {
		return nil
	}

	numCPU := int64(sysinfo.NumCPU())
	if hostConfig.CPUCount < 0 {
		logrus.Warnf("Changing requested CPUCount of %d to minimum allowed of %d", hostConfig.CPUCount, windowsMinCPUCount)
		hostConfig.CPUCount = windowsMinCPUCount
	} else if hostConfig.CPUCount > numCPU {
		logrus.Warnf("Changing requested CPUCount of %d to current number of processors, %d", hostConfig.CPUCount, numCPU)
		hostConfig.CPUCount = numCPU
	}

	if hostConfig.CPUShares < 0 {
		logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, windowsMinCPUShares)
		hostConfig.CPUShares = windowsMinCPUShares
	} else if hostConfig.CPUShares > windowsMaxCPUShares {
		logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, windowsMaxCPUShares)
		hostConfig.CPUShares = windowsMaxCPUShares
	}

	if hostConfig.CPUPercent < 0 {
		logrus.Warnf("Changing requested CPUPercent of %d to minimum allowed of %d", hostConfig.CPUPercent, windowsMinCPUPercent)
		hostConfig.CPUPercent = windowsMinCPUPercent
	} else if hostConfig.CPUPercent > windowsMaxCPUPercent {
		logrus.Warnf("Changing requested CPUPercent of %d to maximum allowed of %d", hostConfig.CPUPercent, windowsMaxCPUPercent)
		hostConfig.CPUPercent = windowsMaxCPUPercent
	}

	return nil
}

// adaptContainerSettings is called during container creation to modify any
// settings necessary in the HostConfig structure.
func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
	if hostConfig == nil {
		return nil
	}

	if hostConfig.CPUShares < 0 {
		logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, windowsMinCPUShares)
		hostConfig.CPUShares = windowsMinCPUShares
	} else if hostConfig.CPUShares > windowsMaxCPUShares {
		logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, windowsMaxCPUShares)
		hostConfig.CPUShares = windowsMaxCPUShares
	}

	return nil
}

func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
	if hostConfig.CPUShares < 0 {
		logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, solarisMinCPUShares)
		hostConfig.CPUShares = solarisMinCPUShares
	} else if hostConfig.CPUShares > solarisMaxCPUShares {
		logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, solarisMaxCPUShares)
		hostConfig.CPUShares = solarisMaxCPUShares
	}

	if hostConfig.Memory > 0 && hostConfig.MemorySwap == 0 {
		// By default, MemorySwap is set to twice the size of Memory.
		hostConfig.MemorySwap = hostConfig.Memory * 2
	}

	if hostConfig.ShmSize != 0 {
		hostConfig.ShmSize = container.DefaultSHMSize
	}
	if hostConfig.OomKillDisable == nil {
		defaultOomKillDisable := false
		hostConfig.OomKillDisable = &defaultOomKillDisable
	}

	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{}
	sysInfo := sysinfo.New(true)
	// NOTE: We do not enforce a minimum value for swap limits for zones on Solaris and
	// therefore we will not do that for Docker container either.
	if hostConfig.Memory > 0 && !sysInfo.MemoryLimit {
		warnings = append(warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
		logrus.Warnf("Your kernel does not support memory limit capabilities. Limitation discarded.")
		hostConfig.Memory = 0
		hostConfig.MemorySwap = -1
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap != -1 && !sysInfo.SwapLimit {
		warnings = append(warnings, "Your kernel does not support swap limit capabilities, memory limited without swap.")
		logrus.Warnf("Your kernel does not support swap limit capabilities, memory limited without swap.")
		hostConfig.MemorySwap = -1
	}
	if hostConfig.Memory > 0 && hostConfig.MemorySwap > 0 && hostConfig.MemorySwap < hostConfig.Memory {
		return warnings, fmt.Errorf("Minimum memoryswap limit should be larger than memory limit, see usage.")
	}
	// Solaris NOTE: We allow and encourage setting the swap without setting the memory limit.

	if hostConfig.MemorySwappiness != nil && *hostConfig.MemorySwappiness != -1 && !sysInfo.MemorySwappiness {
		warnings = append(warnings, "Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
		logrus.Warnf("Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
		hostConfig.MemorySwappiness = nil
	}
	if hostConfig.MemoryReservation > 0 && !sysInfo.MemoryReservation {
		warnings = append(warnings, "Your kernel does not support memory soft limit capabilities. Limitation discarded.")
		logrus.Warnf("Your kernel does not support memory soft limit capabilities. Limitation discarded.")
		hostConfig.MemoryReservation = 0
	}
	if hostConfig.Memory > 0 && hostConfig.MemoryReservation > 0 && hostConfig.Memory < hostConfig.MemoryReservation {
		return warnings, fmt.Errorf("Minimum memory limit should be larger than memory reservation limit, see usage.")
	}
	if hostConfig.KernelMemory > 0 && !sysInfo.KernelMemory {
		warnings = append(warnings, "Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
		logrus.Warnf("Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
		hostConfig.KernelMemory = 0
	}
	if hostConfig.CPUShares != 0 && !sysInfo.CPUShares {
		warnings = append(warnings, "Your kernel does not support CPU shares. Shares discarded.")
		logrus.Warnf("Your kernel does not support CPU shares. Shares discarded.")
		hostConfig.CPUShares = 0
	}
	if hostConfig.CPUShares < 0 {
		warnings = append(warnings, "Invalid CPUShares value. Must be positive. Discarding.")
		logrus.Warnf("Invalid CPUShares value. Must be positive. Discarding.")
		hostConfig.CPUQuota = 0
	}
	if hostConfig.CPUShares > 0 && !sysinfo.IsCPUSharesAvailable() {
		warnings = append(warnings, "Global zone default scheduling class not FSS. Discarding shares.")
		logrus.Warnf("Global zone default scheduling class not FSS. Discarding shares.")
		hostConfig.CPUShares = 0
	}

	// Solaris NOTE: Linux does not do negative checking for CPUShares and Quota here. But it makes sense to.
	if hostConfig.CPUPeriod > 0 && !sysInfo.CPUCfsPeriod {
		warnings = append(warnings, "Your kernel does not support CPU cfs period. Period discarded.")
		logrus.Warnf("Your kernel does not support CPU cfs period. Period discarded.")
		if hostConfig.CPUQuota > 0 {
			warnings = append(warnings, "Quota will be applied on default period, not period specified.")
			logrus.Warnf("Quota will be applied on default period, not period specified.")
		}
		hostConfig.CPUPeriod = 0
	}
	if hostConfig.CPUQuota != 0 && !sysInfo.CPUCfsQuota {
		warnings = append(warnings, "Your kernel does not support CPU cfs quota. Quota discarded.")
		logrus.Warnf("Your kernel does not support CPU cfs quota. Quota discarded.")
		hostConfig.CPUQuota = 0
	}
	if hostConfig.CPUQuota < 0 {
		warnings = append(warnings, "Invalid CPUQuota value. Must be positive. Discarding.")
		logrus.Warnf("Invalid CPUQuota value. Must be positive. Discarding.")
		hostConfig.CPUQuota = 0
	}
	if (hostConfig.CpusetCpus != "" || hostConfig.CpusetMems != "") && !sysInfo.Cpuset {
		warnings = append(warnings, "Your kernel does not support cpuset. Cpuset discarded.")
		logrus.Warnf("Your kernel does not support cpuset. Cpuset discarded.")
		hostConfig.CpusetCpus = ""
		hostConfig.CpusetMems = ""
	}
	cpusAvailable, err := sysInfo.IsCpusetCpusAvailable(hostConfig.CpusetCpus)
	if err != nil {
		return warnings, fmt.Errorf("Invalid value %s for cpuset cpus.", hostConfig.CpusetCpus)
	}
	if !cpusAvailable {
		return warnings, fmt.Errorf("Requested CPUs are not available - requested %s, available: %s.", hostConfig.CpusetCpus, sysInfo.Cpus)
	}
	memsAvailable, err := sysInfo.IsCpusetMemsAvailable(hostConfig.CpusetMems)
	if err != nil {
		return warnings, fmt.Errorf("Invalid value %s for cpuset mems.", hostConfig.CpusetMems)
	}
	if !memsAvailable {
		return warnings, fmt.Errorf("Requested memory nodes are not available - requested %s, available: %s.", hostConfig.CpusetMems, sysInfo.Mems)
	}
	if hostConfig.BlkioWeight > 0 && !sysInfo.BlkioWeight {
		warnings = append(warnings, "Your kernel does not support Block I/O weight. Weight discarded.")
		logrus.Warnf("Your kernel does not support Block I/O weight. Weight discarded.")
//.........這裏部分代碼省略.........