Я работаю над Fedora 30 (также пробовал Fedora 29), и мне не удалось пройти kubeadm init, это ошибка, которую я получаю:
kstarter]# kubeadm init --ignore-preflight-errors=Swap,Service,Docker,SystemVerification,NumC PU --config=/root/con/cc.yaml
[init] Using Kubernetes version: v1.14.1 [preflight] Running pre-flight checks
[WARNING Firewalld]: firewalld is active, please ensure ports [6443 10250] are open or your cluster may not function correctly
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Activating the kubelet service [certs] Using certificateDir folder "/etc/kubernetes/pki"
[certs] Generating "etcd/ca" certificate and key
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
[certs] Generating "etcd/server" certificate and key [certs] etcd/server serving cert is signed for DNS names [devks8twohundredandthirtyeighthbdhh99suy localhost] and IPs [172.16.6.3 127.0.0.1 ::1 ]
[certs] Generating "etcd/peer" certificate and key [certs] etcd/peer serving cert is signed for DNS names [devks8twohundredandthirtyeighthbdhh99suy localhost] and IPs [172.16.6.3 127.0.0.1 ::1]
[certs] Generating "ca" certificate and key [certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [devks8twohundredandthirtyeighthbdhh99suy kubernetes kubernetes.default kubernetes.defau lt.svc kubernetes.default.svc.cluster.local] and IPs [172.24.0.1 172.16.6.3]
[certs] Generating "apiserver-kubelet-client" certificate and key
[certs] Generating "front-proxy-ca" certificate and key
[certs] Generating "front-proxy-client" certificate and key
[certs] Generating "sa" key and public key [kubeconfig] Using
kubeconfig folder "/etc/kubernetes"
[kubeconfig] Writing "admin.conf" kubeconfig file
[kubeconfig] Writing "kubelet.conf" kubeconfig file
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
[kubeconfig] Writing "scheduler.conf" kubeconfig file
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
[control-plane] Creating static Pod manifest for "kube-controller-manager"
[control-plane] Creating static Pod manifest for "kube-scheduler"
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
[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
[kubelet-check] Initial timeout of 40s passed.
Unfortunately, an error has occurred:
timed out waiting for the condition
This 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, e.g. docker. 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' error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster
Я могу использовать containerd вручную (с crictl) для запуска контейнеров в подах, и они работают нормально, но kubeadm создает / etc / kubernetes / manifestests, и там ничего не запускается, почему это? я могу видеть что-нибудь в журналах, чтобы помочь отладить. вот бревна кубелет
https://paste.fedoraproject.org/paste/lUXymIKk1SrZ76ELnW6t-Q и
конфигурация containerd: containerd_fpaste
По сути, я не могу заставить kubeadm завершиться и, глядя на вывод crictl, не создаются контейнеры / поды, которые должны быть созданы, как kube api pod, etcd pod, никакие контейнеры не создаются, это похоже на отсутствие связи между containerd и kubeadm, но я не могу увидеть в журналах, что я делаю не так.
- containerd-1.2.4-1.fc30.x86_64
- kubectl-1.14.1-0.x86_64
- kubeadm-1.14.1-0.x86_64
- kubelet-1.14.1-0.x86_64 all from google repository
с более ранними версиями кубернетов (1.10X) и контейнерd-cni not (containerd) я мог бы заставить kubeadm создать кластер.
Оказывается, здесь была проблема:
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
FailSwapOn: false
...
EnableControllerAttachDetach: true
StaticPodPath: "/etc/kubernetes/manifests/"
которые должны быть staticPodPath
не StaticPodPath