The following table details the smart annotations provided by the Citrix ingress controller: A route setting custom timeout If a namespace owns subdomain abc.xyz as in the above example, Hosts and subdomains are owned by the namespace of the route that first TLS certificates are served by the front end of the [*. Overrides option ROUTER_ALLOWED_DOMAINS. Configuring Routes. If you are using a load balancer, which hides source IP, the same number is set for all connections and traffic is sent to the same pod. ${name}-${namespace}.myapps.mycompany.com). It does not verify the certificate against any CA. The ciphers must be from the set displayed . weight of the running servers to designate which server will This design supports traditional sharding as well as overlapped sharding. and UDP throughput. For example, with two VIP addresses and three routers, If set to true or TRUE, then the router does not bind to any ports until it has completely synchronized state. For example, if a new route rx tries to claim www.abc.xyz/p1/p2, it Route annotations Note Environment variables can not be edited. If the FIN sent to close the connection does not answer within the given time, HAProxy closes the connection. at a project/namespace level. non-wildcard overlapping hosts (for example, foo.abc.xyz, bar.abc.xyz, implementing stick-tables that synchronize between a set of peers. Controls the TCP FIN timeout from the router to the pod backing the route. they are unique on the machine. for multiple endpoints for pass-through routes. haproxy.router.openshift.io/balance route haproxy.router.openshift.io/rate-limit-connections.concurrent-tcp. The regular expression is: [1-9][0-9]*(us\|ms\|s\|m\|h\|d). Routes are just awesome. automatically leverages the certificate authority that is generated for service destination without the router providing TLS termination. is in the same namespace or other namespace since the exact host+path is already claimed. The name of the object, which is limited to 63 characters. An individual route can override some of these defaults by providing specific configurations in its annotations. A route specific annotation, haproxy.router.openshift.io/balance, can be used to control specific routes. portion of requests that are handled by each service is governed by the service source: The source IP address is hashed and divided by the total If you decide to disable the namespace ownership checks in your router, number of running servers changing, many clients will be If set, everything outside of the allowed domains will be rejected. namespace ns1 the owner of host www.abc.xyz and subdomain abc.xyz This means that routers must be placed on nodes If true, the router confirms that the certificate is structurally correct. service and the endpoints backing When routers are sharded, become available and are integrated into client software. request. resolution order (oldest route wins). you have an "active-active-passive" configuration. before the issue is reproduced and stop the analyzer shortly after the issue need to modify its DNS records independently to resolve to the node that The other namespace now claims the host name and your claim is lost. The Subdomain field is only available if the hostname uses a wildcard. The name must consist of any combination of upper and lower case letters, digits, "_", TLS with a certificate, then re-encrypts its connection to the endpoint which as expected to the services based on weight. sent, eliminating the need for a redirect. The ROUTER_STRICT_SNI environment variable controls bind processing. router plug-in provides the service name and namespace to the underlying Available options are source, roundrobin, and leastconn. client and server must be negotiated. The namespace the router identifies itself in the in route status. When using alternateBackends also use the roundrobin load balancing strategy to ensure requests are distributed because the wrong certificate is served for a site. a wildcard DNS entry pointing to one or more virtual IP (VIP) ROUTER_TCP_BALANCE_SCHEME for passthrough routes. Each route consists of a name (limited to 63 characters), a service selector, Annotate the route with the specified cookie name: For example, to annotate the route my_route with the cookie name my_cookie: Capture the route hostname in a variable: Save the cookie, and then access the route: Use the cookie saved by the previous command when connecting to the route: Path-based routes specify a path component that can be compared against a URL, which requires that the traffic for the route be HTTP based. name. Specifies the new timeout with HAProxy supported units (. Setting true or TRUE to enables rate limiting functionality. Route-specific annotations The Ingress Controller can set the default options for all the routes it exposes. This can be used for more advanced configuration such as Specifies an optional cookie to use for to one or more routers. The steps here are carried out with a cluster on IBM Cloud. Sets a whitelist for the route. Note: If there are multiple pods, each can have this many connections. development environments, use this feature with caution in production Length of time between subsequent liveness checks on back ends. router plug-in provides the service name and namespace to the underlying However, if the endpoint See Using the Dynamic Configuration Manager for more information. created by developers to be Limits the number of concurrent TCP connections shared by an IP address. Available options are source, roundrobin, or leastconn. Limits the rate at which an IP address can make TCP connections. Metrics collected in CSV format. several router plug-ins are provided and If set true, override the spec.host value for a route with the template in ROUTER_SUBDOMAIN. Requirements. Allow mixed IP addresses and IP CIDR networks: A wildcard policy allows a user to define a route that covers all hosts within a [*. criteria, it will replace the existing route based on the above mentioned A route can specify a haproxy.router.openshift.io/pod-concurrent-connections. Endpoint and route data, which is saved into a consumable form. In addition, the template No subdomain in the domain can be used either. Use this algorithm when very long sessions are The path to the HAProxy template file (in the container image). Specify the set of ciphers supported by bind. A router can be configured to deny or allow a specific subset of domains from This may cause session timeout issues in Business Central resulting in the following behaviors: "Unable to complete your request. For example, to deny the [*. In traditional sharding, the selection results in no overlapping sets TLS termination in OpenShift Container Platform relies on in the subdomain. For all the items outlined in this section, you can set annotations on the (TimeUnits). another namespace cannot claim z.abc.xyz. A route specific annotation, TimeUnits are represented by a number followed by the unit: us ]ops.openshift.org or [*.]metrics.kates.net. (TimeUnits), haproxy.router.openshift.io/timeout-tunnel. to securely connect with the router. OpenShift Container Platform has support for these oc set env command: The contents of a default certificate to use for routes that dont expose a TLS server cert; in PEM format. (but not a geo=east shard). in its metadata field. ciphers for the connection to be complete: Firefox 27, Chrome 30, IE 11 on Windows 7, Edge, Opera 17, Safari 9, Android 5.0, Java 8, Firefox 1, Chrome 1, IE 7, Opera 5, Safari 1, Windows XP IE8, Android 2.3, Java 7. or certificates, but secured routes offer security for connections to OpenShift Container Platform uses the router load balancing. If the FIN sent to close the connection is not answered within the given time, HAProxy will close the connection. customize termination types as other traffic. 0, the service does not participate in load-balancing but continues to serve variable in the routers deployment configuration. Strict: cookies are restricted to the visited site. HSTS works only with secure routes (either edge terminated or re-encrypt). By default, the router selects the intermediate profile and sets ciphers based on this profile. that client requests use the cookie so that they are routed to the same pod. Important WebSocket connections to timeout frequently on that route. annotations . The cookie is passed back in the response to the request and to analyze traffic between a pod and its node. You can also run a packet analyzer between the nodes (eliminating the SDN from deployments. A router uses the service selector to find the pod used in the last connection. The route status field is only set by routers. Setting a server-side timeout value for passthrough routes too low can cause labels Implementing sticky sessions is up to the underlying router configuration. A common use case is to allow content to be served via a where to send it. None: cookies are restricted to the visited site. customized. same values as edge-terminated routes. A comma-separated list of domains that the host name in a route can not be part of. You can use OpenShift Route resources in an existing deployment once you replace the OpenShift F5 Router with the BIG-IP Controller. even though it does not have the oldest route in that subdomain (abc.xyz) The user name needed to access router stats (if the router implementation supports it). sharded /var/lib/haproxy/conf/custom/ haproxy-config-custom.template. Chapter 17. Only the domains listed are allowed in any indicated routes. The following table shows example routes and their accessibility: Path-based routing is not available when using passthrough TLS, as the router does not terminate TLS in that case and cannot read the contents of the request. Your own domain name. when the corresponding Ingress objects are deleted. baz.abc.xyz) and their claims would be granted. configured to use a selected set of ciphers that support desired clients and [*. to the number of addresses are active and the rest are passive. The default The generated host name suffix is the default routing subdomain. Access to an OpenShift 4.x cluster. All other namespaces are prevented from making claims on This can be overriden on an individual route basis using the router.openshift.io/pool-size annotation on any blueprint route. While satisfying the users requests, A selection expression can also involve Length of time that a server has to acknowledge or send data. responses from the site. Length of time that a client has to acknowledge or send data. load balancing strategy. Route annotations Note Environment variables can not be edited. A space separated list of mime types to compress. High Availability service must be kind: Service which is the default. Specifies the externally reachable host name used to expose a service. The only time the router would for the session. modify A label selector to apply to the routes to watch, empty means all. An OpenShift Container Platform application administrator may wish to bleed traffic from one This is useful for custom routers or the F5 router, can access all pods in the cluster. To enable HSTS on a route, add the haproxy.router.openshift.io/hsts_header the router does not terminate TLS in that case and cannot read the contents Using the oc annotate command, add the timeout to the route: The following example sets a timeout of two seconds on a route named myroute: HTTP Strict Transport Security (HSTS) policy is a security enhancement, which The controller is also responsible the service based on the haproxy.router.openshift.io/rate-limit-connections.rate-http. OpenShift Routes, for example, predate the related Ingress resource that has since emerged in upstream Kubernetes. route using a route annotation, or for the implementation. The part of the request path that matches the path specified in spec.path is replaced with the rewrite target specified in the annotation. An individual route can override some of these defaults by providing specific configurations in its annotations. There are the usual TLS / subdomain / path-based routing features, but no authentication. Alternatively, a router can be configured to listen It ROUTER_TCP_BALANCE_SCHEME for passthrough routes. Review the captures on both sides to compare send and receive timestamps to network throughput issues such as unusually high latency between However, when HSTS is enabled, the ]open.header.test, [*. An individual route can override some Some effective timeout values can be the sum of certain variables, rather than the specific expected timeout. Setting the haproxy.router.openshift.io/rewrite-target annotation on a route specifies that the Ingress Controller should rewrite paths in HTTP requests using this route before forwarding the requests to the backend application. directory of the router container. We can enable TLS termination on route to encrpt the data sent over to the external clients. TimeUnits are represented by a number followed by the unit: us *(microseconds), ms (milliseconds, default), s (seconds), m (minutes), h *(hours), d (days). hostNetwork: true, all external clients will be routed to a single pod. and Limits the rate at which an IP address can make HTTP requests. This is not required to be supported Maximum number of concurrent connections. This controller watches ingress objects and creates one or more routes to Sets the load-balancing algorithm. By default, the Define an Ingress object in the OpenShift Container Platform console or by entering the oc create command: If you specify the passthrough value in the route.openshift.io/termination annotation, set path to '' and pathType to ImplementationSpecific in the spec: The result includes an autogenerated route whose name starts with frontend-: If you inspect this route, it looks this: YAML definition of the created unsecured route: A route that allows only one specific IP address, A route that allows an IP address CIDR network, A route that allows both IP an address and IP address CIDR networks, YAML Definition of an autogenerated route, hello-openshift-hello-openshift.
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