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validate ipvs scheduler
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02f0d92160
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@ -38,6 +38,7 @@ func Validate(config *componentconfig.KubeProxyConfiguration) field.ErrorList {
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allErrs = append(allErrs, validateKubeProxyConntrackConfiguration(config.Conntrack, newPath.Child("KubeProxyConntrackConfiguration"))...)
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allErrs = append(allErrs, validateProxyMode(config.Mode, newPath.Child("Mode"))...)
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allErrs = append(allErrs, validateClientConnectionConfiguration(config.ClientConnection, newPath.Child("ClientConnection"))...)
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allErrs = append(allErrs, validateIPVSSchedulerMethod(config.IPVS.Scheduler, newPath.Child("KubeProxyIPVSConfiguration").Child("Scheduler"))...)
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if config.OOMScoreAdj != nil && (*config.OOMScoreAdj < -1000 || *config.OOMScoreAdj > 1000) {
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allErrs = append(allErrs, field.Invalid(newPath.Child("OOMScoreAdj"), *config.OOMScoreAdj, "must be within the range [-1000, 1000]"))
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@ -156,3 +157,33 @@ func validateHostPort(input string, fldPath *field.Path) field.ErrorList {
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return allErrs
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}
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func validateIPVSSchedulerMethod(scheduler string, fldPath *field.Path) field.ErrorList {
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supportedMethod := []string{
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string(componentconfig.RoundRobin),
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string(componentconfig.WeightedRoundRobin),
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string(componentconfig.LeastConnection),
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string(componentconfig.WeightedLeastConnection),
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string(componentconfig.LocalityBasedLeastConnection),
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string(componentconfig.LocalityBasedLeastConnectionWithReplication),
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string(componentconfig.SourceHashing),
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string(componentconfig.DestinationHashing),
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string(componentconfig.ShortestExpectedDelay),
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string(componentconfig.NeverQueue),
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"",
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}
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allErrs := field.ErrorList{}
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var found bool
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for i := range supportedMethod {
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if scheduler == supportedMethod[i] {
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found = true
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break
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}
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}
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// Not found
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if !found {
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errMsg := fmt.Sprintf("must be in %v, blank means the default algorithm method (currently rr)", supportedMethod)
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allErrs = append(allErrs, field.Invalid(fldPath.Child("Scheduler"), string(scheduler), errMsg))
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}
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return allErrs
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}
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@ -160,6 +160,48 @@ const (
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ProxyModeIPTables ProxyMode = "iptables"
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)
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// IPVSSchedulerMethod is the algorithm for allocating TCP connections and
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// UDP datagrams to real servers. Scheduling algorithms are imple-
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//wanted as kernel modules. Ten are shipped with the Linux Virtual Server.
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type IPVSSchedulerMethod string
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const (
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// Robin Robin distributes jobs equally amongst the available real servers.
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RoundRobin IPVSSchedulerMethod = "rr"
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// Weighted Round Robin assigns jobs to real servers proportionally to there real servers' weight.
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// Servers with higher weights receive new jobs first and get more jobs than servers with lower weights.
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// Servers with equal weights get an equal distribution of new jobs.
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WeightedRoundRobin IPVSSchedulerMethod = "wrr"
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// Least Connection assigns more jobs to real servers with fewer active jobs.
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LeastConnection IPVSSchedulerMethod = "lc"
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// Weighted Least Connection assigns more jobs to servers with fewer jobs and
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// relative to the real servers’weight(Ci/Wi).
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WeightedLeastConnection IPVSSchedulerMethod = "wlc"
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// Locality Based Least Connection assigns jobs destined for the same IP address to the same server if
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// the server is not overloaded and available; otherwise assign jobs to servers with fewer jobs,
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// and keep it for future assignment.
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LocalityBasedLeastConnection IPVSSchedulerMethod = "lblc"
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// Locality Based Least Connection with Replication assigns jobs destined for the same IP address to the
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// least-connection node in the server set for the IP address. If all the node in the server set are over loaded,
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// it picks up a node with fewer jobs in the cluster and adds it in the sever set for the target.
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// If the server set has not been modified for the specified time, the most loaded node is removed from the server set,
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// in order to avoid high degree of replication.
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LocalityBasedLeastConnectionWithReplication IPVSSchedulerMethod = "lblcr"
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// Source Hashing assigns jobs to servers through looking up a statically assigned hash table
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// by their source IP addresses.
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SourceHashing IPVSSchedulerMethod = "sh"
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// Destination Hashing assigns jobs to servers through looking up a statically assigned hash table
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// by their destination IP addresses.
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DestinationHashing IPVSSchedulerMethod = "dh"
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// Shortest Expected Delay assigns an incoming job to the server with the shortest expected delay.
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// The expected delay that the job will experience is (Ci + 1) / Ui if sent to the ith server, in which
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// Ci is the number of jobs on the the ith server and Ui is the fixed service rate (weight) of the ith server.
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ShortestExpectedDelay IPVSSchedulerMethod = "sed"
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// Never Queue assigns an incoming job to an idle server if there is, instead of waiting for a fast one;
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// if all the servers are busy, it adopts the Shortest Expected Delay policy to assign the job.
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NeverQueue IPVSSchedulerMethod = "nq"
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)
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// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
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type KubeSchedulerConfiguration struct {
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