Minikube fails to start on ubuntu 22

DeanInCO · May 17, 2023, 6:37pm

I’ve installed minikube version 1.30.1 on ubuntu 22 using Docker for virtualization. Running minikube start fails. The last error in the (>1400 line) log file is:

E0517 18:09:14.745834 16485 kubelet.go:1449] “Failed to start cAdvisor” err=“inotify_add_watch /sys/fs/cgroup: no space left on device”

I have this in my /etc/sysctl.conf file so I doubt that I don’t have enough inotify watches:

fs.inotify.max_user_watches=1048576
fs.inotify.max_user_instances=1024

The complete output is at

github.com/kubernetes/minikube

minikube fails to start on Ubuntu 22

opened 06:12PM - 17 May 23 UTC

dwschulze

### What Happened? minikube start failed with this long output: journalctl -xe…u kubelet showed nothing 😄 minikube v1.30.1 on Ubuntu 22.04 ✨ Automatically selected the docker driver. Other choices: virtualbox, none, ssh 📌 Using Docker driver with root privileges 👍 Starting control plane node minikube in cluster minikube 🚜 Pulling base image ... 💾 Downloading Kubernetes v1.26.3 preload ... > preloaded-images-k8s-v18-v1...: 397.02 MiB / 397.02 MiB 100.00% 7.39 Mi > gcr.io/k8s-minikube/kicbase...: 373.53 MiB / 373.53 MiB 100.00% 6.31 Mi 🔥 Creating docker container (CPUs=2, Memory=7900MB) ... 🐳 Preparing Kubernetes v1.26.3 on Docker 23.0.2 ... ▪ Generating certificates and keys ... ▪ Booting up control plane ... 💢 initialization failed, will try again: wait: /bin/bash -c "sudo env PATH="/var/lib/minikube/binaries/v1.26.3:$PATH" kubeadm init --config /var/tmp/minikube/kubeadm.yaml --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests,DirAvailable--var-lib-minikube,DirAvailable--var-lib-minikube-etcd,FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml,FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml,FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml,FileAvailable--etc-kubernetes-manifests-etcd.yaml,Port-10250,Swap,NumCPU,Mem,SystemVerification,FileContent--proc-sys-net-bridge-bridge-nf-call-iptables": Process exited with status 1 stdout: [init] Using Kubernetes version: v1.26.3 [preflight] Running pre-flight checks [preflight] The system verification failed. Printing the output from the verification: KERNEL_VERSION: 5.19.0-41-generic OS: Linux CGROUPS_CPU: enabled CGROUPS_CPUSET: enabled CGROUPS_DEVICES: enabled CGROUPS_FREEZER: enabled CGROUPS_MEMORY: enabled CGROUPS_PIDS: enabled CGROUPS_HUGETLB: enabled CGROUPS_IO: enabled [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' [certs] Using certificateDir folder "/var/lib/minikube/certs" [certs] Using existing ca certificate authority [certs] Using existing apiserver certificate and key on disk [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 "etcd/ca" certificate and key [certs] Generating "etcd/server" certificate and key [certs] etcd/server serving cert is signed for DNS names [localhost minikube] and IPs [192.168.49.2 127.0.0.1 ::1] [certs] Generating "etcd/peer" certificate and key [certs] etcd/peer serving cert is signed for DNS names [localhost minikube] and IPs [192.168.49.2 127.0.0.1 ::1] [certs] Generating "etcd/healthcheck-client" certificate and key [certs] Generating "apiserver-etcd-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 [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] Starting the kubelet [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. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. 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. Here is one example how you may list all running Kubernetes containers by using crictl: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock ps -a | grep kube | grep -v pause' Once you have found the failing container, you can inspect its logs with: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock logs CONTAINERID' stderr: W0517 18:00:16.976226 1311 initconfiguration.go:119] Usage of CRI endpoints without URL scheme is deprecated and can cause kubelet errors in the future. Automatically prepending scheme "unix" to the "criSocket" with value "/var/run/cri-dockerd.sock". Please update your configuration! [WARNING SystemVerification]: failed to parse kernel config: unable to load kernel module: "configs", output: "modprobe: FATAL: Module configs not found in directory /lib/modules/5.19.0-41-generic\n", err: exit status 1 [WARNING Service-Kubelet]: kubelet service is not enabled, please run 'systemctl enable kubelet.service' error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster To see the stack trace of this error execute with --v=5 or higher ▪ Generating certificates and keys ... ▪ Booting up control plane ... 💣 Error starting cluster: wait: /bin/bash -c "sudo env PATH="/var/lib/minikube/binaries/v1.26.3:$PATH" kubeadm init --config /var/tmp/minikube/kubeadm.yaml --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests,DirAvailable--var-lib-minikube,DirAvailable--var-lib-minikube-etcd,FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml,FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml,FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml,FileAvailable--etc-kubernetes-manifests-etcd.yaml,Port-10250,Swap,NumCPU,Mem,SystemVerification,FileContent--proc-sys-net-bridge-bridge-nf-call-iptables": Process exited with status 1 stdout: [init] Using Kubernetes version: v1.26.3 [preflight] Running pre-flight checks [preflight] The system verification failed. Printing the output from the verification: KERNEL_VERSION: 5.19.0-41-generic OS: Linux CGROUPS_CPU: enabled CGROUPS_CPUSET: enabled CGROUPS_DEVICES: enabled CGROUPS_FREEZER: enabled CGROUPS_MEMORY: enabled CGROUPS_PIDS: enabled CGROUPS_HUGETLB: enabled CGROUPS_IO: enabled [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' [certs] Using certificateDir folder "/var/lib/minikube/certs" [certs] Using existing ca certificate authority [certs] Using existing apiserver certificate and key on disk [certs] Using existing apiserver-kubelet-client certificate and key on disk [certs] Using existing front-proxy-ca certificate authority [certs] Using existing front-proxy-client certificate and key on disk [certs] Using existing etcd/ca certificate authority [certs] Using existing etcd/server certificate and key on disk [certs] Using existing etcd/peer certificate and key on disk [certs] Using existing etcd/healthcheck-client certificate and key on disk [certs] Using existing apiserver-etcd-client certificate and key on disk [certs] Using the existing "sa" 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 [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] Starting the kubelet [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. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. 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. Here is one example how you may list all running Kubernetes containers by using crictl: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock ps -a | grep kube | grep -v pause' Once you have found the failing container, you can inspect its logs with: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock logs CONTAINERID' stderr: W0517 18:02:16.068352 5170 initconfiguration.go:119] Usage of CRI endpoints without URL scheme is deprecated and can cause kubelet errors in the future. Automatically prepending scheme "unix" to the "criSocket" with value "/var/run/cri-dockerd.sock". Please update your configuration! [WARNING SystemVerification]: failed to parse kernel config: unable to load kernel module: "configs", output: "modprobe: FATAL: Module configs not found in directory /lib/modules/5.19.0-41-generic\n", err: exit status 1 [WARNING Service-Kubelet]: kubelet service is not enabled, please run 'systemctl enable kubelet.service' error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster To see the stack trace of this error execute with --v=5 or higher ╭───────────────────────────────────────────────────────────────────────────────────────────╮ │ │ │ 😿 If the above advice does not help, please let us know: │ │ 👉 https://github.com/kubernetes/minikube/issues/new/choose │ │ │ │ Please run `minikube logs --file=logs.txt` and attach logs.txt to the GitHub issue. │ │ │ ╰───────────────────────────────────────────────────────────────────────────────────────────╯ ❌ Exiting due to K8S_KUBELET_NOT_RUNNING: wait: /bin/bash -c "sudo env PATH="/var/lib/minikube/binaries/v1.26.3:$PATH" kubeadm init --config /var/tmp/minikube/kubeadm.yaml --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests,DirAvailable--var-lib-minikube,DirAvailable--var-lib-minikube-etcd,FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml,FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml,FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml,FileAvailable--etc-kubernetes-manifests-etcd.yaml,Port-10250,Swap,NumCPU,Mem,SystemVerification,FileContent--proc-sys-net-bridge-bridge-nf-call-iptables": Process exited with status 1 stdout: [init] Using Kubernetes version: v1.26.3 [preflight] Running pre-flight checks [preflight] The system verification failed. Printing the output from the verification: KERNEL_VERSION: 5.19.0-41-generic OS: Linux CGROUPS_CPU: enabled CGROUPS_CPUSET: enabled CGROUPS_DEVICES: enabled CGROUPS_FREEZER: enabled CGROUPS_MEMORY: enabled CGROUPS_PIDS: enabled CGROUPS_HUGETLB: enabled CGROUPS_IO: enabled [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' [certs] Using certificateDir folder "/var/lib/minikube/certs" [certs] Using existing ca certificate authority [certs] Using existing apiserver certificate and key on disk [certs] Using existing apiserver-kubelet-client certificate and key on disk [certs] Using existing front-proxy-ca certificate authority [certs] Using existing front-proxy-client certificate and key on disk [certs] Using existing etcd/ca certificate authority [certs] Using existing etcd/server certificate and key on disk [certs] Using existing etcd/peer certificate and key on disk [certs] Using existing etcd/healthcheck-client certificate and key on disk [certs] Using existing apiserver-etcd-client certificate and key on disk [certs] Using the existing "sa" 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 [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] Starting the kubelet [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. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. [kubelet-check] It seems like the kubelet isn't running or healthy. [kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp 127.0.0.1:10248: connect: connection refused. 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. Here is one example how you may list all running Kubernetes containers by using crictl: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock ps -a | grep kube | grep -v pause' Once you have found the failing container, you can inspect its logs with: - 'crictl --runtime-endpoint unix:///var/run/cri-dockerd.sock logs CONTAINERID' stderr: W0517 18:02:16.068352 5170 initconfiguration.go:119] Usage of CRI endpoints without URL scheme is deprecated and can cause kubelet errors in the future. Automatically prepending scheme "unix" to the "criSocket" with value "/var/run/cri-dockerd.sock". Please update your configuration! [WARNING SystemVerification]: failed to parse kernel config: unable to load kernel module: "configs", output: "modprobe: FATAL: Module configs not found in directory /lib/modules/5.19.0-41-generic\n", err: exit status 1 [WARNING Service-Kubelet]: kubelet service is not enabled, please run 'systemctl enable kubelet.service' error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster To see the stack trace of this error execute with --v=5 or higher 💡 Suggestion: Check output of 'journalctl -xeu kubelet', try passing --extra-config=kubelet.cgroup-driver=systemd to minikube start 🍿 Related issue: https://github.com/kubernetes/minikube/issues/4172 ### Attach the log file [log.txt](https://github.com/kubernetes/minikube/files/11501337/log.txt) ### Operating System Ubuntu ### Driver Docker

There are numerous errors about kubeadm not running, but I assume those are coming from minikube running inside Docker.

Do I need kubeadm installed on Ubuntu 22 in order to run minikube?

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Minikube fails to start on ubuntu 22

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