120 lines
4.1 KiB
Bash
Executable File
120 lines
4.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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KUBECONFIG="${KUBECONFIG:-${KUBECONFIG_PATH:-${HOME}/.kube/config}}"
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section() {
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printf '\n== %s ==\n' "$1"
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}
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run_optional() {
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local label="$1"
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shift
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printf '\n-- %s\n' "${label}"
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"$@" 2>&1 || true
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}
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host_capacity() {
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section "Debian Host"
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run_optional "memory" free -h
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run_optional "disk" df -h / /data /var/lib/docker
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if command -v docker >/dev/null 2>&1; then
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run_optional "docker disk usage" sudo docker system df
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run_optional "largest docker volumes" sudo docker system df -v
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else
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printf 'docker not installed\n'
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fi
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}
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kubernetes_capacity() {
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section "Kubernetes"
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if ! command -v kubectl >/dev/null 2>&1 || [[ ! -s "${KUBECONFIG}" ]]; then
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printf 'kubectl or kubeconfig unavailable\n'
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return 0
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fi
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run_optional "nodes" kubectl --kubeconfig "${KUBECONFIG}" get nodes -o wide
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run_optional "node resource summary" kubectl --kubeconfig "${KUBECONFIG}" describe nodes
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run_optional "top nodes" kubectl --kubeconfig "${KUBECONFIG}" top nodes
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run_optional "top pods" kubectl --kubeconfig "${KUBECONFIG}" top pods -A --sort-by=memory
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run_optional "PVCs" kubectl --kubeconfig "${KUBECONFIG}" get pvc -A -o wide
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run_optional "PVs" kubectl --kubeconfig "${KUBECONFIG}" get pv -o wide
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printf '\n-- pods without resource requests or limits\n'
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kubectl --kubeconfig "${KUBECONFIG}" get pods -A -o jsonpath='{range .items[*]}{.metadata.namespace}{"/"}{.metadata.name}{" "}{range .spec.containers[*]}{.name}{":cpuReq="}{.resources.requests.cpu}{",memReq="}{.resources.requests.memory}{",memLimit="}{.resources.limits.memory}{" "}{end}{"\n"}{end}' 2>/dev/null |
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awk '/cpuReq=,|memReq=,|memLimit=,/ { print }' || true
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}
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pimox_capacity() {
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local pimox_host="${LAB_PIMOX_HOST:-${TF_VAR_pimox_host:-192.168.100.80}}"
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local pimox_user="${LAB_PIMOX_USER:-${TF_VAR_pimox_user:-jv}}"
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local pimox_key="${LAB_PIMOX_SSH_KEY_PATH:-${TF_VAR_pimox_ssh_key_path:-${HOME}/.ssh/id_ed25519}}"
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section "Pimox"
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ssh -i "${pimox_key}" -o BatchMode=yes -o ConnectTimeout=10 -o StrictHostKeyChecking=accept-new "${pimox_user}@${pimox_host}" '
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set +e
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echo "-- host memory"
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free -h
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echo
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echo "-- storage"
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df -h / /data 2>/dev/null || df -h
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echo
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echo "-- pvesm"
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sudo pvesm status 2>/dev/null || true
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echo
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echo "-- VMs"
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sudo qm list 2>/dev/null || true
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echo
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echo "-- running VM configs"
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for vmid in $(sudo qm list 2>/dev/null | awk "NR > 1 {print \$1}"); do
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echo "VM ${vmid}"
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sudo qm config "${vmid}" 2>/dev/null | awk "/^(memory|cores|sockets|scsi|virtio|sata|ide)[0-9]*:|^memory:|^cores:|^sockets:/"
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done
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' || printf 'unable to reach Pimox host %s@%s\n' "${pimox_user}" "${pimox_host}"
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}
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rpi_capacity() {
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local rpi_host="${LAB_RPI_HOST:-${LAB_RASPBERRY_HOST:-192.168.100.89}}"
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local rpi_user="${LAB_RPI_USER:-${LAB_RASPBERRY_USER:-jv}}"
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local rpi_key="${LAB_RPI_SSH_KEY_PATH:-${LAB_RASPBERRY_SSH_KEY_PATH:-${HOME}/.ssh/id_ed25519}}"
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section "RPi4"
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ssh -i "${rpi_key}" -o BatchMode=yes -o ConnectTimeout=10 -o StrictHostKeyChecking=accept-new "${rpi_user}@${rpi_host}" '
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set +e
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echo "-- memory"
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free -h
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echo
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echo "-- disk"
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df -h / /nvme-storage /var/lib/docker 2>/dev/null || df -h
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echo
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echo "-- docker root"
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sudo docker info --format "{{.DockerRootDir}}" 2>/dev/null || true
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echo
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echo "-- docker disk usage"
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sudo docker system df 2>/dev/null || true
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' || printf 'unable to reach RPi host %s@%s\n' "${rpi_user}" "${rpi_host}"
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}
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summary() {
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section "Capacity Guidance"
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cat <<'EOF'
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Use this report to decide placement:
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- Prefer Kubernetes app workloads on Pimox workers with SSD-backed storage.
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- Keep Debian control-plane headroom for Docker, Gitea, registry, Ollama, and kubeadm.
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- Treat Orange Pi VM disks as rebuildable capacity, not durable backup storage.
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- Keep RPi4 focused on DNS/Uptime Kuma/light services until NVMe stability is proven.
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- Add capacity only when CPU, memory, and disk all have margin; storage alone is not enough.
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EOF
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}
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main() {
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host_capacity
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kubernetes_capacity
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pimox_capacity
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rpi_capacity
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summary
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}
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main "$@"
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