# Dual-Stack RKE2 Cluster cert error **URL:** \ **Category:** General\ **Created:** [August 29, 2023, 11:37am UTC](https://forums.suse.com/t/dual-stack-rke2-cluster-cert-error/41403 "2023-08-29T11:37:51Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![MatijaTerzic](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/matijaterzic/32/10474_2.png) [@MatijaTerzic](https://forums.suse.com/u/MatijaTerzic)\ **Post date:** [August 29, 2023, 11:37am UTC](https://forums.suse.com/t/dual-stack-rke2-cluster-cert-error/41403/1 "2023-08-29T11:37:51Z")
I am trying to setup a Dual-Stack with Calico cluster with the following setup: Service CIDR: 10.43.0.0/16,fd00:c00b:2::/64 Cluster CIDR: 10.42.0.0/16,fd00:c00b:1::/64 IPv4 and IPv6 on the hosts is configured and working. If i try to setup cluster i got following error: level=error msg=“error loading CA cert for probe (kube-controller-manager) /var/lib/rancher/rke2/server/tls/kube-controller-manager/kube-controller-manager.crt: open /var/lib/rancher/rke2/server/tls/kube-controller-manager/kube-controller-manager.crt: no such file or directory” Aug 29 13:34:44 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:44+02:00” level=error msg=“error while appending ca cert to pool for probe kube-controller-manager” Aug 29 13:34:44 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:44+02:00” level=error msg=“error loading CA cert for probe (kube-scheduler) /var/lib/rancher/rke2/server/tls/kube-scheduler/kube-scheduler.crt: open /var/lib/rancher/rke2/server/tls/kube-scheduler/kube-scheduler.crt: no such file or directory” Aug 29 13:34:44 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:44+02:00” level=error msg=“error while appending ca cert to pool for probe kube-scheduler” Aug 29 13:34:44 k8-master rke2[3240]: time=“2023-08-29T13:34:44+02:00” level=info msg=“Waiting to retrieve kube-proxy configuration; server is not ready: [https://127.0.0.1:9345/v1-rke2/readyz:](https://127.0.0.1:9345/v1-rke2/readyz:) 500 Internal Server Error” Aug 29 13:34:49 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:49+02:00” level=error msg=“error loading CA cert for probe (kube-controller-manager) /var/lib/rancher/rke2/server/tls/kube-controller-manager/kube-controller-manager.crt: open /var/lib/rancher/rke2/server/tls/kube-controller-manager/kube-controller-manager.crt: no such file or directory” Aug 29 13:34:49 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:49+02:00” level=error msg=“error while appending ca cert to pool for probe kube-controller-manager” Aug 29 13:34:49 k8-master rancher-system-agent[3037]: time=“2023-08-29T13:34:49+02:00” level=error msg=“error loading CA cert for probe (kube-scheduler) /var/lib/rancher/rke2/server/tls/kube-scheduler/kube-scheduler.crt: open /var/lib/rancher/rke2/server/tls/kube-scheduler/kube-scheduler.crt: no such file or directory” And the cluster won’t setup. With only IPv4 i don’t have this problem ---
**Author:** ![virgiliofilho](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/virgiliofilho/32/11030_2.png) [@virgiliofilho](https://forums.suse.com/u/virgiliofilho)\ **Post date:** [March 12, 2024, 4:42pm UTC](https://forums.suse.com/t/dual-stack-rke2-cluster-cert-error/41403/2 "2024-03-12T16:42:11Z")
i’ve the same problem… do you resolved? redhat 8.9 rke2 1.26 or 1.27 cert-manager 1.14 or 1.15 rancher 2.8.2 i can deploy: rke2 (no set plugin cni active, but it’s work with default)- ok deploy cert-manager - ok rancher - “not good” but rancher don’t work well… - with ingress (rke2 or ingress-nginx) - with loadbalancer (i’m trying using metallb) - with nodeport the rancher stay ‘operational’ but i CAN’T create anothers cluster too, wherever rke2 or k3s. # kubectl logs -n cattle-system -l app=rancher -f [ERROR] error syncing ‘harvester’: handler feature-handler: Internal error occurred: failed calling webhook “[rancher.cattle.io.nodedrivers.management.cattle.io](http://rancher.cattle.io.nodedrivers.management.cattle.io)”: failed to call webhook: Post “[https://rancher-webhook.cattle-system.svc:443/v1/webhook/validation/nodedrivers.management.cattle.io?timeout=10s](https://rancher-webhook.cattle-system.svc:443/v1/webhook/validation/nodedrivers.management.cattle.io?timeout=10s)”: no endpoints available for service “rancher-webhook”, requeuing 2024/03/12 16:30:58 [ERROR] error syncing ‘_all_’: handler user-controllers-controller: userControllersController: failed to set peers for key _all_: failed to start user controllers for cluster c-m-xtkmnbsz: ClusterUnavailable 503: cluster not found, requeuing 2024/03/12 16:31:02 [ERROR] Failed syncing peers [{10.42.0.26 true false}]: failed to start user controllers for cluster c-m-xtkmnbsz: ClusterUnavailable 503: cluster not found 2024/03/12 16:31:02 [ERROR] Failed to handle tunnel request from remote address 192.168.1.56:60728: response 400: cluster not found 2024/03/12 16:31:07 [ERROR] Failed to handle tunnel request from remote address 192.168.1.56:60732: response 400: cluster not found 2024/03/12 16:31:09 [ERROR] error syncing ‘_all_’: handler user-controllers-controller: userControllersController: failed to set peers for key _all_: failed to start user controllers for cluster c-m-xtkmnbsz: ClusterUnavailable 503: cluster not found, requeuing 2024/03/12 16:31:10 [INFO] Adding peer wss://10.42.0.27/v3/connect, 10.42.0.27 2024/03/12 16:31:10 [ERROR] Failed syncing peers [{10.42.0.26 [10.42.0.27] true false}]: failed to start user controllers for cluster c-m-xtkmnbsz: ClusterUnavailable 503: cluster not found