kubernetes的Ingress资源介绍
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Ingress 的资源帮助信息介绍
[root@master ~]# kubectl explain ingress
KIND: Ingress
VERSION: extensions/v1beta1
DESCRIPTION:
Ingress is a collection of rules that allow inbound connections to reach
the endpoints defined by a backend. An Ingress can be configured to give
services externally-reachable urls, load balance traffic, terminate SSL,
offer name based virtual hosting etc. DEPRECATED - This group version of
Ingress is deprecated by networking.k8s.io/v1beta1 Ingress. See the release
notes for more information.
FIELDS:
apiVersion <string>
APIVersion defines the versioned schema of this representation of an
object. Servers should convert recognized schemas to the latest internal
value, and may reject unrecognized values. More info:
https://git.k8s.io/community/contributors/devel/api-conventions.md#resources
kind <string>
Kind is a string value representing the REST resource this object
represents. Servers may infer this from the endpoint the client submits
requests to. Cannot be updated. In CamelCase. More info:
https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
metadata <Object> 元数据
Standard object‘s metadata. More info:
https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
spec <Object> 期望状态
Spec is the desired state of the Ingress. More info:
https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
status <Object>
Status is the current state of the Ingress. More info:
https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
查看期望状态的帮助信息
[root@master ~]# kubectl explain ingress.spec
KIND: Ingress
VERSION: extensions/v1beta1
RESOURCE: spec <Object>
DESCRIPTION:
Spec is the desired state of the Ingress. More info:
https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
IngressSpec describes the Ingress the user wishes to exist.
FIELDS:
backend <Object> 后端的pod
A default backend capable of servicing requests that don‘t match any rule.
At least one of ‘backend‘ or ‘rules‘ must be specified. This field is
optional to allow the loadbalancer controller or defaulting logic to
specify a global default.
rules <[]Object> 规则
A list of host rules used to configure the Ingress. If unspecified, or no
rule matches, all traffic is sent to the default backend.
tls <[]Object>
TLS configuration. Currently the Ingress only supports a single TLS port,
443. If multiple members of this list specify different hosts, they will be
multiplexed on the same port according to the hostname specified through
the SNI TLS extension, if the ingress controller fulfilling the ingress
supports SNI.
调度的规则
[root@master ~]# kubectl explain ingress.spec.rules
KIND: Ingress
VERSION: extensions/v1beta1
RESOURCE: rules <[]Object>
DESCRIPTION:
A list of host rules used to configure the Ingress. If unspecified, or no
rule matches, all traffic is sent to the default backend.
IngressRule represents the rules mapping the paths under a specified host
to the related backend services. Incoming requests are first evaluated for
a host match, then routed to the backend associated with the matching
IngressRuleValue.
FIELDS:
host <string> 主机名
Host is the fully qualified domain name of a network host, as defined by
RFC 3986. Note the following deviations from the "host" part of the URI as
defined in the RFC: 1. IPs are not allowed. Currently an IngressRuleValue
can only apply to the IP in the Spec of the parent Ingress. 2. The `:`
delimiter is not respected because ports are not allowed. Currently the
port of an Ingress is implicitly :80 for http and :443 for https. Both
these may change in the future. Incoming requests are matched against the
host before the IngressRuleValue. If the host is unspecified, the Ingress
routes all traffic based on the specified IngressRuleValue.
http <Object> url
基于主机名匹配
[root@master ~]# kubectl explain ingress.spec.rules.host
KIND: Ingress
VERSION: extensions/v1beta1
FIELD: host <string>
DESCRIPTION:
Host is the fully qualified domain name of a network host, as defined by
RFC 3986. Note the following deviations from the "host" part of the URI as
defined in the RFC: 1. IPs are not allowed. Currently an IngressRuleValue
can only apply to the IP in the Spec of the parent Ingress. 2. The `:`
delimiter is not respected because ports are not allowed. Currently the
port of an Ingress is implicitly :80 for http and :443 for https. Both
these may change in the future. Incoming requests are matched against the
host before the IngressRuleValue. If the host is unspecified, the Ingress
routes all traffic based on the specified IngressRuleValue.
url匹配
[root@master ~]# kubectl explain ingress.spec.rules.http
KIND: Ingress
VERSION: extensions/v1beta1
RESOURCE: http <Object>
DESCRIPTION:
HTTPIngressRuleValue is a list of http selectors pointing to backends. In
the example: http://<host>/<path>?<searchpart> -> backend where where parts
of the url correspond to RFC 3986, this resource will be used to match
against everything after the last ‘/‘ and before the first ‘?‘ or ‘#‘.
FIELDS:
paths <[]Object> -required-
A collection of paths that map requests to backends.
后端pod的帮助信息
KIND: Ingress
VERSION: extensions/v1beta1
RESOURCE: backend <Object>
DESCRIPTION:
A default backend capable of servicing requests that don‘t match any rule.
At least one of ‘backend‘ or ‘rules‘ must be specified. This field is
optional to allow the loadbalancer controller or defaulting logic to
specify a global default.
IngressBackend describes all endpoints for a given service and port.
FIELDS:
serviceName <string> -required- 后端server的名字的定义
Specifies the name of the referenced service.
servicePort <string> -required- 端口
Specifies the port of the referenced service.
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