kubeadm init hangs in GCP
I am stuck at step 11 in LAB 3.1. I get timeout error message. It seems my kubelet is not running.But I am exactly folloeing the steps given LAB 3.1.Thanks for the help.
https://lms.quickstart.com/custom/858487/LAB_3.1.pdf
Step 11: kubeadm init --pod-network-cidr 10.244.0.0/16
#################################
GCP VM Instance
ubuntu-1604-xenial-v20180724
################################
root@kmst:~# kubeadm init --pod-network-cidr 10.244.0.0/16
[init] Using Kubernetes version: v1.9.9[init] Using Authorization modes: [Node RBAC][preflight] Running pre-flight checks. [WARNING FileExisting-crictl]: crictl not found in system path[certificates] Generated ca certificate and key.[certificates] Generated apiserver certificate and key.[certificates] apiserver serving cert is signed for DNS names [kmst kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 10.138.0.2][certificates] Generated apiserver-kubelet-client certificate and key.[certificates] Generated sa key and public key.[certificates] Generated front-proxy-ca certificate and key.[certificates] Generated front-proxy-client certificate and key.[certificates] Valid certificates and keys now exist in "/etc/kubernetes/pki"[kubeconfig] Wrote KubeConfig file to disk: "admin.conf"[kubeconfig] Wrote KubeConfig file to disk: "kubelet.conf"[kubeconfig] Wrote KubeConfig file to disk: "controller-manager.conf"[kubeconfig] Wrote KubeConfig file to disk: "scheduler.conf"[controlplane] Wrote Static Pod manifest for component kube-apiserver to "/etc/kubernetes/manifests/kube-apiserver.yaml"[controlplane] Wrote Static Pod manifest for component kube-controller-manager to "/etc/kubernetes/manifests/kube-controller-manager.yaml"[controlplane] Wrote Static Pod manifest for component kube-scheduler to "/etc/kubernetes/manifests/kube-scheduler.yaml"[etcd] Wrote Static Pod manifest for a local etcd instance to "/etc/kubernetes/manifests/etcd.yaml"[init] Waiting for the kubelet to boot up the control plane as Static Pods from directory "/etc/kubernetes/manifests".[init] This might take a minute or longer if the control plane images have to be pulled.
################################
GCP VM Instance logs:
Jul 30 08:02:36 kmst kubelet[10727]: W0730 08:02:36.633131 10727 status_manager.go:459] Failed to get status for pod "kube-apiserver-kmst_kube-system(240e2d8ec75db9f607a9a31f5374f462)": Get https://10.138.0.2:6443/api/v1/namespaces/kube-system/pods/kube-apiserver-kmst: net/http: TLS handshake timeout Jul 30 08:02:39 kmst kubelet[10727]: E0730 08:02:39.063159 10727 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://10.138.0.2:6443/api/v1/services?limit=500&resourceVersion=0: net/http: TLS handshake timeout Jul 30 08:02:39 kmst kubelet[10727]: E0730 08:02:39.228891 10727 kubelet.go:1607] Failed creating a mirror pod for "etcd-kmst_kube-system(408851a572c13f8177557fdb9151111c)": Post https://10.138.0.2:6443/api/v1/namespaces/kube-system/pods: net/http: TLS handshake timeout Jul 30 08:02:39 kmst kubelet[10727]: E0730 08:02:39.432891 10727 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://10.138.0.2:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dkmst&limit=500&resourceVersion=0: net/http: TLS handshake timeout Jul 30 08:02:39 kmst kubelet[10727]: E0730 08:02:39.435314 10727 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://10.138.0.2:6443/api/v1/nodes?fieldSelector=metadata.name%3Dkmst&limit=500&resourceVersion=0: net/http: TLS handshake timeout Jul 30 08:02:39 kmst kubelet[10727]: E0730 08:02:39.595262 10727 kubelet_node_status.go:383] Error updating node status, will retry: error getting node "kmst": Get https://10.138.0.2:6443/api/v1/nodes/kmst: net/http: TLS handshake timeout
Comments
-
Hi,
Similar errors are seen when there isn't enough vCPU available on the master instance. To fix the vCPU issue ensure that the instance type has at least 2 vCPUs. Also, enable all traffic by allowing full access, allowing HTTP/HTTPS, and check that the firewall is inactive/disabled:
sudo ufw status
Regards,
-Chris
0 -
Hello,
Inside the error string I notice it mentions that crictl was not installed. I've seen this when I accidently skipped the step to install Docker. If there is not container engine the pod won't start. Please double check docker was installled on both nodes. Also make sure there were no errors in previous steps.
Regards,
0 -
Thanks Chris. Issue resolved with new master instance with given spec.
0 -
Same here:
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
than:
Unfortunately, an error has occurred:
timed out waiting for the conditionThis error is likely caused by: - The kubelet is not running - The kubelet is unhealthy due to a misconfiguration of the node in some way (required cgroups disabled) If you are on a systemd-powered system, you can try to troubleshoot the error with the following commands: - 'systemctl status kubelet' - 'journalctl -xeu kubelet' Additionally, a control plane component may have crashed or exited when started by the container runtime. To troubleshoot, list all containers using your preferred container runtimes CLI. Here is one example how you may list all Kubernetes containers running in docker: - 'docker ps -a | grep kube | grep -v pause' Once you have found the failing container, you can inspect its logs with: - 'docker logs CONTAINERID'
couldn't initialize a Kubernetes cluster'
Output of journalctl -xeu kubelet:
19445 kubelet_node_status.go:71] "Attempting to register node" node="master"
2197 19445 kubelet_node_status.go:93] "Unable to register node with API server" err="Post \"https://k8master:6
0904 19445 kubelet.go:2291] "Error getting node" err="node \"master\" not found"Firewall is off. I' using the recommended GC-Setup
0 -
EDIT:
SOLVED (it was a typo, forgot the "s" after k8")
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: 1.21.0
controlPlaneEndpoint: "k8smaster:6443"
networking:
podSubnet: 192.168.0.0/160
Categories
- All Categories
- 167 LFX Mentorship
- 219 LFX Mentorship: Linux Kernel
- 795 Linux Foundation IT Professional Programs
- 355 Cloud Engineer IT Professional Program
- 179 Advanced Cloud Engineer IT Professional Program
- 82 DevOps Engineer IT Professional Program
- 127 Cloud Native Developer IT Professional Program
- 112 Express Training Courses
- 138 Express Courses - Discussion Forum
- 6.2K Training Courses
- 48 LFC110 Class Forum - Discontinued
- 17 LFC131 Class Forum
- 35 LFD102 Class Forum
- 227 LFD103 Class Forum
- 14 LFD110 Class Forum
- 39 LFD121 Class Forum
- 15 LFD133 Class Forum
- 7 LFD134 Class Forum
- 17 LFD137 Class Forum
- 63 LFD201 Class Forum
- 3 LFD210 Class Forum
- 5 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 1 LFD233 Class Forum
- 2 LFD237 Class Forum
- 23 LFD254 Class Forum
- 697 LFD259 Class Forum
- 109 LFD272 Class Forum
- 3 LFD272-JP クラス フォーラム
- 10 LFD273 Class Forum
- 154 LFS101 Class Forum
- 1 LFS111 Class Forum
- 1 LFS112 Class Forum
- 1 LFS116 Class Forum
- 1 LFS118 Class Forum
- LFS120 Class Forum
- 7 LFS142 Class Forum
- 7 LFS144 Class Forum
- 3 LFS145 Class Forum
- 1 LFS146 Class Forum
- 3 LFS147 Class Forum
- 1 LFS148 Class Forum
- 15 LFS151 Class Forum
- 1 LFS157 Class Forum
- 33 LFS158 Class Forum
- 8 LFS162 Class Forum
- 1 LFS166 Class Forum
- 1 LFS167 Class Forum
- 3 LFS170 Class Forum
- 2 LFS171 Class Forum
- 1 LFS178 Class Forum
- 1 LFS180 Class Forum
- 1 LFS182 Class Forum
- 1 LFS183 Class Forum
- 29 LFS200 Class Forum
- 736 LFS201 Class Forum - Discontinued
- 2 LFS201-JP クラス フォーラム
- 14 LFS203 Class Forum
- 102 LFS207 Class Forum
- 1 LFS207-DE-Klassenforum
- 1 LFS207-JP クラス フォーラム
- 301 LFS211 Class Forum
- 55 LFS216 Class Forum
- 48 LFS241 Class Forum
- 42 LFS242 Class Forum
- 37 LFS243 Class Forum
- 15 LFS244 Class Forum
- LFS245 Class Forum
- LFS246 Class Forum
- 50 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 154 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 5 LFS256 Class Forum
- 1 LFS257 Class Forum
- 1.3K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 111 LFS260 Class Forum
- 159 LFS261 Class Forum
- 41 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 20 LFS267 Class Forum
- 24 LFS268 Class Forum
- 29 LFS269 Class Forum
- 1 LFS270 Class Forum
- 199 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 9 LFW111 Class Forum
- 261 LFW211 Class Forum
- 182 LFW212 Class Forum
- 13 SKF100 Class Forum
- 1 SKF200 Class Forum
- 1 SKF201 Class Forum
- 782 Hardware
- 198 Drivers
- 68 I/O Devices
- 37 Monitors
- 96 Multimedia
- 174 Networking
- 91 Printers & Scanners
- 83 Storage
- 758 Linux Distributions
- 80 Debian
- 67 Fedora
- 15 Linux Mint
- 13 Mageia
- 23 openSUSE
- 143 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 348 Ubuntu
- 461 Linux System Administration
- 39 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 90 Linux Security
- 77 Network Management
- 101 System Management
- 46 Web Management
- 64 Mobile Computing
- 17 Android
- 34 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 371 Off Topic
- 114 Introductions
- 174 Small Talk
- 19 Study Material
- 507 Programming and Development
- 285 Kernel Development
- 204 Software Development
- 1.8K Software
- 211 Applications
- 180 Command Line
- 3 Compiling/Installing
- 405 Games
- 309 Installation
- 97 All In Program
- 97 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)