Kubernetes ServiceSpec SessionAffinity 會話保持

Service 回話親和力

選項SessionAffinity可選項

Spec:       apiv1.ServiceSpec{
				SessionAffinity: "",
			},

代碼註釋段 必選項ClientIP 和 None，默認是None，通過ClientIP來保持回話

	// Supports "ClientIP" and "None". Used to maintain session affinity.
	// Enable client IP based session affinity.
	// Must be ClientIP or None.
	// Defaults to None.
	// More info: https://kubernetes.io/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies
	// +optional
	SessionAffinity ServiceAffinity `json:"sessionAffinity,omitempty" protobuf:"bytes,7,opt,name=sessionAffinity,casttype=ServiceAffinity"`

代碼段 ClientIP 基於客戶端地址來實現 None不做回話保持

// Session Affinity Type string
type ServiceAffinity string

const (
	// ServiceAffinityClientIP is the Client IP based.
	ServiceAffinityClientIP ServiceAffinity = "ClientIP"

	// ServiceAffinityNone - no session affinity.
	ServiceAffinityNone ServiceAffinity = "None"
)

SessionAffinityConfig 回話保持配置段

			Spec:       apiv1.ServiceSpec{
				SessionAffinity: "",
				SessionAffinityConfig: "",
			},

SessionAffinityConfig 回話保持配置

# 可選項 配置了基於ClientIP 會話保持
type SessionAffinityConfig struct {
	// clientIP contains the configurations of Client IP based session affinity.
	// +optional
	ClientIP *ClientIPConfig `json:"clientIP,omitempty" protobuf:"bytes,1,opt,name=clientIP"`
}
##配置回話保持時間 範圍（0秒 ~ 1天），默認是保持3個小時
// ClientIPConfig represents the configurations of Client IP based session affinity.
type ClientIPConfig struct {
	// timeoutSeconds specifies the seconds of ClientIP type session sticky time.
	// The value must be >0 && <=86400(for 1 day) if ServiceAffinity == "ClientIP".
	// Default value is 10800(for 3 hours).
	// +optional
	TimeoutSeconds *int32 `json:"timeoutSeconds,omitempty" protobuf:"varint,1,opt,name=timeoutSeconds"`
}