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Fricounet avatar Fricounet commented on June 24, 2024

Hey @willthames, are you running some kind of monitoring/security software on your nodes by any chance. If yes, it might be something similar as #5538

from containerd.

willthames avatar willthames commented on June 24, 2024

@Fricounet not as far as I can tell - we do have a few daemonset agents that could theoretically be responsible but none of them mount the host volumes that would be needed to keep the tmpmounts files open.

We also don't have anything weird running on the host outside of containers - our production instances are bottlerocket instances using AWS's AMIs

kubectl get ds -A -o custom-columns="NAMESPACE:.metadata.namespace,NAME:.metadata.name,VOLUMES:.spec.template.spec.volumes[*].hostPath.path"
NAMESPACE       NAME                                  VOLUMES
ingress-nginx   nginx-ingress-controller-internal     /var/lib/observability/nginx.conf
kube-system     calico-node                           /lib/modules,/var/run/calico,/var/lib/calico,/run/xtables.lock,/sys/fs/,/sys/fs/bpf,/proc,/opt/cni/bin,/etc/cni/net.d,/var/log/calico/cni,/var/lib/cni/networks,/var/run/nodeagent
kube-system     kube-proxy                            /var/log,/run/xtables.lock,/lib/modules
management      ebs-csi-node                          /var/lib/kubelet,/var/lib/kubelet/plugins/ebs.csi.aws.com/,/var/lib/kubelet/plugins_registry/,/dev
management      efs-csi-node                          /var/lib/kubelet,/var/lib/kubelet/plugins/efs.csi.aws.com/,/var/lib/kubelet/plugins_registry/,/var/run/efs,/var/amazon/efs,/etc/amazon/efs
monitoring      datadog                               /proc,/sys/fs/cgroup,/etc/os-release,/etc/redhat-release,/etc/fedora-release,/etc/lsb-release,/etc/system-release,/var/lib/kubelet/seccomp,/sys/kernel/debug,/lib/modules,/usr/src,/var/tmp/datadog-agent/system-probe/build,/var/tmp/datadog-agent/system-probe/kernel-headers,/etc/apt,/etc/yum.repos.d,/etc/zypp,/etc/pki,/etc/yum/vars,/etc/dnf/vars,/etc/rhsm,/etc/passwd,/,/var/lib/datadog-agent/logs,/var/log/pods,/var/log/containers,/var/lib/docker/containers,/var/run
monitoring      fluent-bit                            /var/log,/var/lib/docker/containers,/etc/machine-id
monitoring      monitoring-prometheus-node-exporter   /proc,/sys,/
monitoring      node-outbound-exporter                <none>
wiz             wiz-sensor                            /var/lib/wiz/

from containerd.

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