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# general
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hundreds-jewelry-18968

01/09/2023, 1:10 AM
Hi all, I’ve a cluster using k3s on raspberryPis. This cluster works perfectly for almost a year, and a few hours when I try to get any data from the cluster using kubectl I receive
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Checking the master node, the k3s service Im seeing this:
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● k3s.service - Lightweight Kubernetes
     Loaded: loaded (/etc/systemd/system/k3s.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2023-01-09 00:57:40 GMT; 26s ago
       Docs: <https://k3s.io>
    Process: 29663 ExecStartPre=/bin/sh -xc ! /usr/bin/systemctl is-enabled --quiet nm-cloud-setup.service (code=exited, status=0/SUCCESS)
    Process: 29665 ExecStartPre=/sbin/modprobe br_netfilter (code=exited, status=0/SUCCESS)
    Process: 29666 ExecStartPre=/sbin/modprobe overlay (code=exited, status=0/SUCCESS)
   Main PID: 29667 (k3s-server)
      Tasks: 105
     Memory: 713.5M
        CPU: 55.998s
     CGroup: /system.slice/k3s.service
             ├─27643 /var/lib/rancher/k3s/data/73e12683e3eb1c52a6370763bda6bb977c304a3b6cda6e5c7656f45f3725e7dd/bin/containerd-shim-runc-v2 -namespace <http://k8s.io|k8s.io> -id 866ca3db8ed3>
             ├─27988 /var/lib/rancher/k3s/data/73e12683e3eb1c52a6370763bda6bb977c304a3b6cda6e5c7656f45f3725e7dd/bin/containerd-shim-runc-v2 -namespace <http://k8s.io|k8s.io> -id 699af3f5d3c1>
             ├─28196 /var/lib/rancher/k3s/data/73e12683e3eb1c52a6370763bda6bb977c304a3b6cda6e5c7656f45f3725e7dd/bin/containerd-shim-runc-v2 -namespace <http://k8s.io|k8s.io> -id ac9ec12775e6>
             ├─28317 /var/lib/rancher/k3s/data/73e12683e3eb1c52a6370763bda6bb977c304a3b6cda6e5c7656f45f3725e7dd/bin/containerd-shim-runc-v2 -namespace <http://k8s.io|k8s.io> -id b345387839df>
             ├─28535 /var/lib/rancher/k3s/data/73e12683e3eb1c52a6370763bda6bb977c304a3b6cda6e5c7656f45f3725e7dd/bin/containerd-shim-runc-v2 -namespace <http://k8s.io|k8s.io> -id 880445942eb9>
             ├─29667 /usr/local/bin/k3s server
             └─29683 containerd -c /var/lib/rancher/k3s/agent/etc/containerd/config.toml -a /run/k3s/containerd/containerd.sock --state /run/k3s/containerd --root /var/lib/ra>

Jan 09 00:58:01 facio k3s[29667]: I0109 00:58:01.010177   29667 ttl_controller.go:121] Starting TTL controller
Jan 09 00:58:01 facio k3s[29667]: I0109 00:58:01.010203   29667 shared_informer.go:240] Waiting for caches to sync for TTL
Jan 09 00:58:01 facio k3s[29667]: I0109 00:58:01.022756   29667 node_ipam_controller.go:91] Sending events to api server.
Jan 09 00:58:01 facio k3s[29667]: E0109 00:58:01.441328   29667 authentication.go:63] "Unable to authenticate the request" err="[x509: certificate has expired or is not yet v>
Jan 09 00:58:04 facio k3s[29667]: E0109 00:58:04.547721   29667 authentication.go:63] "Unable to authenticate the request" err="[x509: certificate has expired or is not yet v>
Jan 09 00:58:04 facio k3s[29667]: E0109 00:58:04.548614   29667 authentication.go:63] "Unable to authenticate the request" err="[x509: certificate has expired or is not yet v>
Jan 09 00:58:04 facio k3s[29667]: E0109 00:58:04.548867   29667 authentication.go:63] "Unable to authenticate the request" err="[x509: certificate has expired or is not yet v>
I saw this error before but I reinstall the cluster. I prefer not to do it again to avoid loosing data. Anyone knows how I can fix:
"Unable to authenticate the request" err="[x509: certificate has expired or is not yet v>
(edited) [1:09 AM] I havent changed anything on the machine running K3S at all
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