#!/bin/bash
set +e
echo "=== os ==="
. /etc/os-release
echo "$PRETTY_NAME"
uname -r
echo "=== disk ==="
df -h / /usr /var /usr/cluster 2>/dev/null
echo "=== versions ==="
kubelet --version 2>/dev/null
kubeadm version -o short 2>/dev/null
kubectl version --client -o yaml 2>/dev/null | head -20
which kubeadm kubelet kubectl cri-dockerd containerd crictl 2>/dev/null
echo "=== units ==="
systemctl is-active kubelet containerd docker cri-dockerd nginx 2>/dev/null
systemctl list-units --type=service --all --no-pager | grep -Ei 'kube|etcd|containerd|cri-dockerd' 
echo "=== cri ==="
ls -l /var/run/containerd/containerd.sock /var/run/cri-dockerd.sock /var/run/docker.sock /run/containerd/containerd.sock 2>/dev/null
ps -ef | grep -E '[k]ubelet|[c]ri-dockerd|[c]ontainerd ' | head -20
echo "=== ports ==="
ss -lntup | grep -E ':6443|:10250|:10257|:10259|:2379|:2380|:80 |:443 ' || true
echo "=== k8s paths ==="
ls -d /etc/kubernetes /var/lib/kubelet /var/lib/etcd /etc/cni /opt/cni /etc/systemd/system/kubelet.service.d 2>/dev/null
echo "=== docker names ==="
docker ps -a --format '{{.Names}}\t{{.Status}}\t{{.Image}}' | head -80
echo "=== k8s labeled ==="
docker ps -aq --filter label=io.kubernetes.pod.name | wc -l
echo "=== non-k8s running ==="
docker ps --format '{{.Names}}' | grep -v '^k8s_' | head -60
echo "=== ipvs ==="
ipvsadm -Ln 2>/dev/null | head -30 || echo no-ipvsadm
echo "=== routes ==="
ip route | head -40
echo "=== done ==="