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description= Set up an internal passthrough Network Load Balancer with VM instance group backends;
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nt vm gcloud compute ssh vm client zone us west1 a test http connectivity on all four ports curl http 10 1 2 99 curl http 10 1 2 99 8008 curl http 10 1 2 99 8080 curl http 10 1 2 99 8088 test https connectivity on ports 443 and 8443 the insecure flag is required because each apache server in the example setup uses a self signed certificate curl https 10 1 2 99 insecure curl https 10 1 2 99 8443 insecure observe that http requests on all four ports and https requests on both ports are distributed among all of the backend vms accept traffic on multiple ports using two forwarding rules when you created this example load balancer s forwarding rule you configured ports 80 8008 8080 and 8088 the startup script that installs apache also configures it to accept https connections on ports 443 and 8443 an alternative strategy to configuring a single forwarding rule to accept traffic on all ports is to create multiple forwarding rules each supporting five or fewer ports this procedure shows you how to replace the example load balancer s forwarding rule with two forwarding rules one handling traffic on ports 80 8008 8080 and 8088 and the other handling traffic on ports 443 and 8443 for more information about when to use this setup see internal passthrough network load balancers and forwarding rules with a common ip address console in the google cloud console go to the forwarding rules page go to forwarding rules in the name column click fr ilb and then click delete in the google cloud console go to the load balancing page go to load balancing in the name column click be ilb click edit click frontend configuration click add frontend ip and port in the new frontend ip and port section do the following for name enter fr ilb http for subnetwork select lb subnet for internal ip purpose select shared from the ip address list select create ip address enter the following information and click reserve name internal 10 1 2 99 static ip address let me choose custom ip address 10 1 2 99 for ports select multiple and then in port numbers enter 80 8008 8080 and 8088 click done click add frontend ip and port in the new frontend ip and port section do the following for name enter fr ilb https for subnetwork select lb subnet for internal ip purpose select shared from the ip address list select internal 10 1 2 99 for ports select multiple and then in port numbers enter 443 and 8443 click done click review and finalize and review your load balancer configuration settings click update gcloud delete your existing forwarding rule fr ilb gcloud compute forwarding rules delete fr ilb region us west1 create a static reserved internal ip address for 10 1 2 99 and set its purpose flag to shared_loadbalancer_vip the purpose flag is required so that two internal forwarding rules can use the same internal ip address gcloud compute addresses create internal 10 1 2 99 region us west1 subnet lb subnet addresses 10 1 2 99 purpose shared_loadbalancer_vip create two replacement forwarding rules with the following parameters gcloud compute forwarding rules create fr ilb http region us west1 load balancing scheme internal network lb network subnet lb subnet address 10 1 2 99 ip protocol tcp ports 80 8008 8080 8088 backend service be ilb backend service region us west1 gcloud compute forwarding rules create fr ilb https region us west1 load balancing scheme internal network lb network subnet lb subnet address 10 1 2 99 ip protocol tcp ports 443 8443 backend service be ilb backend service region us west1 api delete the forwarding rule by making a delete request to the forwardingrules delete method delete https compute googleapis com compute v1 projects project_id regions us west1 forwardingrules fr ilb create a static reserved internal ip address for 10 1 2 99 and set its purpose to shared_loadbalancer_vip by making a post request to the addresses insert method post https compute googleapis com compute v1 projects project_id regions us west1 addresses name internal 10 1 2 99 address 10 1 2 99 prefixlength 32 addresstype internal purpose shared_loadbalancer_vip subnetwork https www googleapis com compute v1 projects project_id regions us west1 subnetworks lb subnet create two forwarding rules by making two post requests to the forwardingrules insert method post https compute googleapis com compute v1 projects project_id regions us west1 forwardingrules name fr ilb http ipaddress 10 1 2 99 ipprotocol tcp ports 80 8008 8080 8088 loadbalancingscheme internal subnetwork https www googleapis com compute v1 projects project_id regions us west1 subnetworks lb subnet network https www googleapis com compute v1 projects project_id global networks lb network backendservice https www googleapis com compute v1 projects project_id regions us west1 backendservices be ilb networktier premium name fr ilb https ipaddress 10 1 2 99 ipprotocol tcp ports 443 8443 loadbalancingscheme internal subnetwork https www googleapis com compute v1 projects project_id regions us west1 subnetworks lb subnet network https www googleapis com compute v1 projects project_id global networks lb network backendservice https www googleapis com compute v1 projects project_id regions us west1 backendservices be ilb networktier premium test the traffic on multiple ports setup connect to the client vm instance and test http and https connections connect to the client vm gcloud compute ssh vm client zone us west1 a test http connectivity on all four ports curl http 10 1 2 99 curl http 10 1 2 99 8008 curl http 10 1 2 99 8080 curl http 10 1 2 99 8088 test https connectivity on ports 443 and 8443 the insecure flag is required because each apache server in the example setup uses a self signed certificate curl https 10 1 2 99 insecure curl https 10 1 2 99 8443 insecure observe that http requests on all four ports and https requests on both ports are distributed among all of the backend vms use session affinity the example configuration creates a backend service without session affinity this procedure shows you how to update the backend service for the example internal passthrough network load balancer so that it uses session affinity based on a hash created from the client s ip addresses and the ip address of the load balancer s internal forwarding rule for supported session affinity types see session affinity options note for internal udp load balancers setting session affinity is supported in the gcloud cli and the api you can t set session affinity for udp traffic by using the google cloud console console in the google cloud console go to the load balancing page go to load balancing click be ilb the name of the backend service that you created for this example and click edit on the edit internal passthrough network load balancer page click backend configuration from the session affinity list select client ip click update gcloud use the following gcloud command to update the be ilb backend service specifying client ip session affinity gcloud compute backend services update be ilb region us west1 session affinity client_ip api make a patch request to the regionbackendservices patch method patch https compute googleapis com compute v1 projects project_id regions us west1 backendservices be ilb sessionaffinity client_ip configure a connection tracking policy this section shows you how to update the backend service to change the load balancer s default connection tracking policy a connection tracking policy includes the following settings tracking mode connection persistence on unhealthy backends idle timeout note you cannot use the google cloud console to configure a connection tracking policy use the google cloud cli or the rest api compute docs reference rest v1 regionbackendservices instead gcloud use the following gcloud compute backend services command to update the connection tracking policy for the backend service gcloud compute backend services update backend_service region region tracking mode tracking_mode connection persistence on unhealthy backends connection_persistence_behavior idle timeout sec idle_timeout_value replace the placeholders with valid values backend_service the backend service that you re updating region the region of the backend service that you re updating tracking_mode the connection tracking mode to be used for incoming packets for the list of supported values see tracking mode connection_persistence_behavior the connection persistence behavior when backends are unhealthy for the list of supported values see connection persistence on unhealthy backends idle_timeout_value the number of seconds that a connection tracking table entry must be maintained after the load balancer processes the last packet that matched the entry use zonal affinity preview this product or feature is subject to the pre ga offerings terms in the general service terms section of the service specific terms pre ga products and features are available as is and might have limited support for more information see the launch stage descriptions this section shows you how to configure an internal passthrough network load balancer to enable zonal affinity on the backend service of the load balancer by default zonal affinity is disabled for more information see zonal affinity for internal passthrough network load balancers use the following command to configure the zonal_affinity_stay_within_zone zonal affinity option for more information about how this option works see how zonal_affinity_stay_within_zone works gcloud beta compute backend services update be ilb zonal affinity spillover zonal_affinity_stay_within_zone region us west1 use the following command to configure zonal_affinity_spill_cross_zone zonal affinity with the default 0 0 spillover ratio for more information about how this option works see the how zonal_affinity_spill_cross_zone and spillover ratio work and zero spillover ratio sections gcloud beta compute backend services update be ilb zonal affinity spillover zonal_affinity_spill_cross_zone region us west1 use the following command to configure zonal_affinity_spill_cross_zone zonal affinity with a 30 spillover ratio for more information about how this option works see how zonal_affinity_spill_cross_zone and spillover ratio work and nonzero spillover ratio sections gcloud beta compute backend services update be ilb zonal affinity spillover zonal_affinity_spill_cross_zone zonal affinity spillover ratio 0 3 region us west1 create a forwarding rule in another subnet this procedure creates a second ip address and forwarding rule in a different subnet to demonstrate that you can create multiple forwarding rules for one internal passthrough network load balancer the region for the forwarding rule must match the region of the backend service subject to firewall rules clients in any subnet in the region can contact either internal passthrough network load balancer ip address console add the second subnet in the google cloud console go to the vpc networks page go to vpc networks click create vpc network click lb network in the subnets section do the following click add subnet in the new subnet section enter the following information name second subnet region us west1 ip address range 10 5 6 0 24 click add add the second forwarding rule in the google cloud console go to the load balancing page go to load balancing click the be ilb load balancer and click edit click frontend configuration click add frontend ip and port in the new frontend ip and port section set the following fields and click done name fr ilb 2 ip version ipv4 subnetwork second subnet internal ip ip ilb ports 80 and 443 verify that there is a blue check mark next to frontend configuration before continuing click review and finalize and review your load balancer configuration settings click create gcloud create a second subnet in the lb network network in the us west1 region gcloud compute networks subnets create second subnet network lb network range 10 5 6 0 24 region us west1 create a second forwarding rule for ports 80 and 443 the other parameters for this rule including ip address and backend service are the same as for the primary forwarding rule fr ilb gcloud compute forwarding rules create fr ilb 2 region us west1 load balancing scheme internal network lb network subnet second subnet address 10 5 6 99 ip protocol tcp ports 80 443 backend service be ilb backend service region us west1 api make a post requests to the subnetworks insert method post https compute googleapis com compute v1 projects project_id regions us west1 subnetworks name second subnet network https www googleapis com compute v1 projects project_id global networks lb network ipcidrrange 10 5 6 0 24 privateipgoogleaccess false create the forwarding rule by making a post request to the forwardingrules insert method post https compute googleapis com compute v1 projects project_id regions us west1 forwardingrules name fr ilb 2 ipaddress 10 5 6 99 ipprotocol tcp ports 80 443 loadbalancingscheme internal subnetwork https www googleapis com compute v1 projects project_id regions us west1 subnetworks lb subnet network https www googleapis com compute v1 projects project_id global networks lb network backendservice https www googleapis com compute v1 projects project_id regions us west1 backendservices be ilb networktier premium test the new forwarding rule connect to the client vm instance and test http and https connections to the ip addresses connect to the client vm gcloud compute ssh vm client zone us west1 a test http connectivity to the ip addresses curl http 10 1 2 99 curl http 10 5 6 99 test https connectivity use of insecure is required because the apache server configuration in the example setup uses self signed certificates curl https 10 1 2 99 insecure curl https 10 5 6 99 insecure observe that requests are handled by all of the backend vms regardless of the protocol http or https or ip address used use backend subsetting the example configuration creates a backend service without subsetting this procedure shows you how to enable subsetting on the backend service for the example internal passthrough network load balancer so that the deployment can scale to a larger number of backend instances caution enabling backend subsetting might be temporarily disruptive and might break existing tcp connections you should only enable subsetting if you need to support more than 250 backend vms on a single load balancer note this feature does not support ipv6 addresses for more information about this use case see backend subsetting gcloud use the following gcloud command to update the be ilb backend service specifying subsetting policy gcloud compute backend services update be ilb subsetting policy consistent_hash_subsetting api make a patch request to the regionbackendservices patch method patch https compute googleapis com compute v1 projects project_id regions us west1 backendservices be ilb subsetting policy consistent_hash_subsetting create a load balancer for packet mirroring pa...
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