Move verify container resources to a separate function
Make the code easy to view. Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
This commit is contained in:
Qiang Huang
parent
a16a1d75d9
commit
c6bfb54ac1
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@ -180,6 +180,130 @@ func (daemon *Daemon) adaptContainerSettings(hostConfig *runconfig.HostConfig, a
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return nil
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}
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func verifyContainerResources(resources *runconfig.Resources) ([]string, error) {
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warnings := []string{}
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sysInfo := sysinfo.New(true)
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// memory subsystem checks and adjustments
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if resources.Memory != 0 && resources.Memory < linuxMinMemory {
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return warnings, fmt.Errorf("Minimum memory limit allowed is 4MB")
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}
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if resources.Memory > 0 && !sysInfo.MemoryLimit {
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warnings = append(warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support memory limit capabilities. Limitation discarded.")
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resources.Memory = 0
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resources.MemorySwap = -1
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}
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if resources.Memory > 0 && resources.MemorySwap != -1 && !sysInfo.SwapLimit {
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warnings = append(warnings, "Your kernel does not support swap limit capabilities, memory limited without swap.")
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logrus.Warnf("Your kernel does not support swap limit capabilities, memory limited without swap.")
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resources.MemorySwap = -1
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}
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if resources.Memory > 0 && resources.MemorySwap > 0 && resources.MemorySwap < resources.Memory {
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return warnings, fmt.Errorf("Minimum memoryswap limit should be larger than memory limit, see usage.")
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}
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if resources.Memory == 0 && resources.MemorySwap > 0 {
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return warnings, fmt.Errorf("You should always set the Memory limit when using Memoryswap limit, see usage.")
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}
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if resources.MemorySwappiness != nil && *resources.MemorySwappiness != -1 && !sysInfo.MemorySwappiness {
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warnings = append(warnings, "Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
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logrus.Warnf("Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
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resources.MemorySwappiness = nil
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}
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if resources.MemorySwappiness != nil {
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swappiness := *resources.MemorySwappiness
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if swappiness < -1 || swappiness > 100 {
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return warnings, fmt.Errorf("Invalid value: %v, valid memory swappiness range is 0-100.", swappiness)
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}
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}
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if resources.MemoryReservation > 0 && !sysInfo.MemoryReservation {
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warnings = append(warnings, "Your kernel does not support memory soft limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support memory soft limit capabilities. Limitation discarded.")
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resources.MemoryReservation = 0
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}
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if resources.Memory > 0 && resources.MemoryReservation > 0 && resources.Memory < resources.MemoryReservation {
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return warnings, fmt.Errorf("Minimum memory limit should be larger than memory reservation limit, see usage.")
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}
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if resources.KernelMemory > 0 && !sysInfo.KernelMemory {
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warnings = append(warnings, "Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
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resources.KernelMemory = 0
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}
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if resources.KernelMemory > 0 && resources.KernelMemory < linuxMinMemory {
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return warnings, fmt.Errorf("Minimum kernel memory limit allowed is 4MB")
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}
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if resources.KernelMemory > 0 && !checkKernelVersion(4, 0, 0) {
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warnings = append(warnings, "You specified a kernel memory limit on a kernel older than 4.0. Kernel memory limits are experimental on older kernels, it won't work as expected and can cause your system to be unstable.")
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logrus.Warnf("You specified a kernel memory limit on a kernel older than 4.0. Kernel memory limits are experimental on older kernels, it won't work as expected and can cause your system to be unstable.")
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}
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// cpu subsystem checks and adjustments
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if resources.CPUShares > 0 && !sysInfo.CPUShares {
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warnings = append(warnings, "Your kernel does not support CPU shares. Shares discarded.")
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logrus.Warnf("Your kernel does not support CPU shares. Shares discarded.")
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resources.CPUShares = 0
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}
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if resources.CPUPeriod > 0 && !sysInfo.CPUCfsPeriod {
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warnings = append(warnings, "Your kernel does not support CPU cfs period. Period discarded.")
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logrus.Warnf("Your kernel does not support CPU cfs period. Period discarded.")
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resources.CPUPeriod = 0
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}
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if resources.CPUQuota > 0 && !sysInfo.CPUCfsQuota {
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warnings = append(warnings, "Your kernel does not support CPU cfs quota. Quota discarded.")
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logrus.Warnf("Your kernel does not support CPU cfs quota. Quota discarded.")
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resources.CPUQuota = 0
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}
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// cpuset subsystem checks and adjustments
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if (resources.CpusetCpus != "" || resources.CpusetMems != "") && !sysInfo.Cpuset {
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warnings = append(warnings, "Your kernel does not support cpuset. Cpuset discarded.")
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logrus.Warnf("Your kernel does not support cpuset. Cpuset discarded.")
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resources.CpusetCpus = ""
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resources.CpusetMems = ""
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}
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cpusAvailable, err := sysInfo.IsCpusetCpusAvailable(resources.CpusetCpus)
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if err != nil {
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return warnings, derr.ErrorCodeInvalidCpusetCpus.WithArgs(resources.CpusetCpus)
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}
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if !cpusAvailable {
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return warnings, derr.ErrorCodeNotAvailableCpusetCpus.WithArgs(resources.CpusetCpus, sysInfo.Cpus)
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}
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memsAvailable, err := sysInfo.IsCpusetMemsAvailable(resources.CpusetMems)
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if err != nil {
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return warnings, derr.ErrorCodeInvalidCpusetMems.WithArgs(resources.CpusetMems)
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}
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if !memsAvailable {
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return warnings, derr.ErrorCodeNotAvailableCpusetMems.WithArgs(resources.CpusetMems, sysInfo.Mems)
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}
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// blkio subsystem checks and adjustments
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if resources.BlkioWeight > 0 && !sysInfo.BlkioWeight {
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warnings = append(warnings, "Your kernel does not support Block I/O weight. Weight discarded.")
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logrus.Warnf("Your kernel does not support Block I/O weight. Weight discarded.")
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resources.BlkioWeight = 0
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}
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if resources.BlkioWeight > 0 && (resources.BlkioWeight < 10 || resources.BlkioWeight > 1000) {
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return warnings, fmt.Errorf("Range of blkio weight is from 10 to 1000.")
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}
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if len(resources.BlkioWeightDevice) > 0 && !sysInfo.BlkioWeightDevice {
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warnings = append(warnings, "Your kernel does not support Block I/O weight_device.")
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logrus.Warnf("Your kernel does not support Block I/O weight_device. Weight-device discarded.")
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resources.BlkioWeightDevice = []*pblkiodev.WeightDevice{}
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}
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if len(resources.BlkioDeviceReadBps) > 0 && !sysInfo.BlkioReadBpsDevice {
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warnings = append(warnings, "Your kernel does not support Block read limit in bytes per second.")
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logrus.Warnf("Your kernel does not support Block I/O read limit in bytes per second. --device-read-bps discarded.")
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resources.BlkioDeviceReadBps = []*pblkiodev.ThrottleDevice{}
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}
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if len(resources.BlkioDeviceWriteBps) > 0 && !sysInfo.BlkioWriteBpsDevice {
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warnings = append(warnings, "Your kernel does not support Block write limit in bytes per second.")
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logrus.Warnf("Your kernel does not support Block I/O write limit in bytes per second. --device-write-bps discarded.")
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resources.BlkioDeviceWriteBps = []*pblkiodev.ThrottleDevice{}
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}
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return warnings, 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 *runconfig.HostConfig, config *runconfig.Config) ([]string, error) {
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@ -191,120 +315,16 @@ func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *runconfig.HostC
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return warnings, err
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}
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w, err := verifyContainerResources(&hostConfig.Resources)
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if err != nil {
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return warnings, err
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}
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warnings = append(warnings, w...)
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if hostConfig.ShmSize != nil && *hostConfig.ShmSize <= 0 {
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return warnings, fmt.Errorf("SHM size must be greater then 0")
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}
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// memory subsystem checks and adjustments
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if hostConfig.Memory != 0 && hostConfig.Memory < linuxMinMemory {
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return warnings, fmt.Errorf("Minimum memory limit allowed is 4MB")
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}
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if hostConfig.Memory > 0 && !sysInfo.MemoryLimit {
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warnings = append(warnings, "Your kernel does not support memory limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support memory limit capabilities. Limitation discarded.")
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hostConfig.Memory = 0
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hostConfig.MemorySwap = -1
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}
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if hostConfig.Memory > 0 && hostConfig.MemorySwap != -1 && !sysInfo.SwapLimit {
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warnings = append(warnings, "Your kernel does not support swap limit capabilities, memory limited without swap.")
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logrus.Warnf("Your kernel does not support swap limit capabilities, memory limited without swap.")
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hostConfig.MemorySwap = -1
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}
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if hostConfig.Memory > 0 && hostConfig.MemorySwap > 0 && hostConfig.MemorySwap < hostConfig.Memory {
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return warnings, fmt.Errorf("Minimum memoryswap limit should be larger than memory limit, see usage.")
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}
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if hostConfig.Memory == 0 && hostConfig.MemorySwap > 0 {
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return warnings, fmt.Errorf("You should always set the Memory limit when using Memoryswap limit, see usage.")
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}
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if hostConfig.MemorySwappiness != nil && *hostConfig.MemorySwappiness != -1 && !sysInfo.MemorySwappiness {
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warnings = append(warnings, "Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
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logrus.Warnf("Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
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hostConfig.MemorySwappiness = nil
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}
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if hostConfig.MemorySwappiness != nil {
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swappiness := *hostConfig.MemorySwappiness
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if swappiness < -1 || swappiness > 100 {
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return warnings, fmt.Errorf("Invalid value: %v, valid memory swappiness range is 0-100.", swappiness)
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}
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}
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if hostConfig.MemoryReservation > 0 && !sysInfo.MemoryReservation {
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warnings = append(warnings, "Your kernel does not support memory soft limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support memory soft limit capabilities. Limitation discarded.")
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hostConfig.MemoryReservation = 0
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}
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if hostConfig.Memory > 0 && hostConfig.MemoryReservation > 0 && hostConfig.Memory < hostConfig.MemoryReservation {
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return warnings, fmt.Errorf("Minimum memory limit should be larger than memory reservation limit, see usage.")
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}
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if hostConfig.KernelMemory > 0 && !sysInfo.KernelMemory {
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warnings = append(warnings, "Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
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logrus.Warnf("Your kernel does not support kernel memory limit capabilities. Limitation discarded.")
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hostConfig.KernelMemory = 0
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}
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if hostConfig.KernelMemory > 0 && hostConfig.KernelMemory < linuxMinMemory {
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return warnings, fmt.Errorf("Minimum kernel memory limit allowed is 4MB")
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}
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if hostConfig.KernelMemory > 0 && !checkKernelVersion(4, 0, 0) {
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warnings = append(warnings, "You specified a kernel memory limit on a kernel older than 4.0. Kernel memory limits are experimental on older kernels, it won't work as expected and can cause your system to be unstable.")
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logrus.Warnf("You specified a kernel memory limit on a kernel older than 4.0. Kernel memory limits are experimental on older kernels, it won't work as expected and can cause your system to be unstable.")
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}
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if hostConfig.CPUShares > 0 && !sysInfo.CPUShares {
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warnings = append(warnings, "Your kernel does not support CPU shares. Shares discarded.")
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logrus.Warnf("Your kernel does not support CPU shares. Shares discarded.")
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hostConfig.CPUShares = 0
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}
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if hostConfig.CPUPeriod > 0 && !sysInfo.CPUCfsPeriod {
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warnings = append(warnings, "Your kernel does not support CPU cfs period. Period discarded.")
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logrus.Warnf("Your kernel does not support CPU cfs period. Period discarded.")
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hostConfig.CPUPeriod = 0
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}
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if hostConfig.CPUQuota > 0 && !sysInfo.CPUCfsQuota {
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warnings = append(warnings, "Your kernel does not support CPU cfs quota. Quota discarded.")
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logrus.Warnf("Your kernel does not support CPU cfs quota. Quota discarded.")
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hostConfig.CPUQuota = 0
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}
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if (hostConfig.CpusetCpus != "" || hostConfig.CpusetMems != "") && !sysInfo.Cpuset {
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warnings = append(warnings, "Your kernel does not support cpuset. Cpuset discarded.")
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logrus.Warnf("Your kernel does not support cpuset. Cpuset discarded.")
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hostConfig.CpusetCpus = ""
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hostConfig.CpusetMems = ""
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}
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cpusAvailable, err := sysInfo.IsCpusetCpusAvailable(hostConfig.CpusetCpus)
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if err != nil {
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return warnings, derr.ErrorCodeInvalidCpusetCpus.WithArgs(hostConfig.CpusetCpus)
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}
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if !cpusAvailable {
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return warnings, derr.ErrorCodeNotAvailableCpusetCpus.WithArgs(hostConfig.CpusetCpus, sysInfo.Cpus)
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}
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memsAvailable, err := sysInfo.IsCpusetMemsAvailable(hostConfig.CpusetMems)
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if err != nil {
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return warnings, derr.ErrorCodeInvalidCpusetMems.WithArgs(hostConfig.CpusetMems)
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}
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if !memsAvailable {
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return warnings, derr.ErrorCodeNotAvailableCpusetMems.WithArgs(hostConfig.CpusetMems, sysInfo.Mems)
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}
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if hostConfig.BlkioWeight > 0 && !sysInfo.BlkioWeight {
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warnings = append(warnings, "Your kernel does not support Block I/O weight. Weight discarded.")
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logrus.Warnf("Your kernel does not support Block I/O weight. Weight discarded.")
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hostConfig.BlkioWeight = 0
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}
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if hostConfig.BlkioWeight > 0 && (hostConfig.BlkioWeight < 10 || hostConfig.BlkioWeight > 1000) {
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return warnings, fmt.Errorf("Range of blkio weight is from 10 to 1000.")
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}
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if len(hostConfig.BlkioWeightDevice) > 0 && !sysInfo.BlkioWeightDevice {
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warnings = append(warnings, "Your kernel does not support Block I/O weight_device.")
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logrus.Warnf("Your kernel does not support Block I/O weight_device. Weight-device discarded.")
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hostConfig.BlkioWeightDevice = []*pblkiodev.WeightDevice{}
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}
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if len(hostConfig.BlkioDeviceReadBps) > 0 && !sysInfo.BlkioReadBpsDevice {
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warnings = append(warnings, "Your kernel does not support Block read limit in bytes per second.")
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logrus.Warnf("Your kernel does not support Block I/O read limit in bytes per second. --device-read-bps discarded.")
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hostConfig.BlkioDeviceReadBps = []*pblkiodev.ThrottleDevice{}
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}
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if len(hostConfig.BlkioDeviceWriteBps) > 0 && !sysInfo.BlkioWriteBpsDevice {
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warnings = append(warnings, "Your kernel does not support Block write limit in bytes per second.")
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logrus.Warnf("Your kernel does not support Block I/O write limit in bytes per second. --device-write-bps discarded.")
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hostConfig.BlkioDeviceWriteBps = []*pblkiodev.ThrottleDevice{}
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}
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if hostConfig.OomKillDisable && !sysInfo.OomKillDisable {
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hostConfig.OomKillDisable = false
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return warnings, fmt.Errorf("Your kernel does not support oom kill disable.")
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