Initial: bootstrap-client.sh (Sync aus privatem Repo)

2026-04-21 13:20:01 +02:00
commit 422c54f3d1
2 changed files with 81 additions and 0 deletions
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+#!/usr/bin/env bash
+# Initial-Provisioning eines Clients fuer Ansible-Verwaltung.
+# Ausfuehrung als root, einmal pro Client (z.B. via MeshCentral-Shell).
+# Idempotent — wiederholte Laeufe aendern nichts.
+set -euo pipefail
+
+ANSIBLE_USER="ansible"
+PUBKEY="ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOzJuCu5KZAEjsoiWE8nl9U9BKZ0OwK46Kpt4Y4huPoz ansible@docker-ansible"
+
+if [[ $EUID -ne 0 ]]; then
+    echo "ERR: muss als root laufen" >&2
+    exit 1
+fi
+
+# 1. User anlegen
+if ! id -u "${ANSIBLE_USER}" >/dev/null 2>&1; then
+    useradd -m -s /bin/bash -c "Ansible Automation" "${ANSIBLE_USER}"
+    echo "User '${ANSIBLE_USER}' angelegt."
+else
+    echo "User '${ANSIBLE_USER}' existiert bereits."
+fi
+
+# 2. sudoer-Drop-in (nur fuer diesen User, NOPASSWD)
+SUDOERS_FILE="/etc/sudoers.d/90-ansible"
+printf '%s ALL=(ALL) NOPASSWD:ALL\n' "${ANSIBLE_USER}" > "${SUDOERS_FILE}"
+chmod 440 "${SUDOERS_FILE}"
+visudo -cf "${SUDOERS_FILE}" >/dev/null
+echo "sudoers-Eintrag gesetzt: ${SUDOERS_FILE}"
+
+# 3. SSH authorized_keys
+SSH_DIR="/home/${ANSIBLE_USER}/.ssh"
+AUTH_KEYS="${SSH_DIR}/authorized_keys"
+
+install -d -m 0700 -o "${ANSIBLE_USER}" -g "${ANSIBLE_USER}" "${SSH_DIR}"
+touch "${AUTH_KEYS}"
+chmod 600 "${AUTH_KEYS}"
+chown "${ANSIBLE_USER}:${ANSIBLE_USER}" "${AUTH_KEYS}"
+
+if ! grep -qxF "${PUBKEY}" "${AUTH_KEYS}"; then
+    echo "${PUBKEY}" >> "${AUTH_KEYS}"
+    echo "Public-Key installiert."
+else
+    echo "Public-Key bereits vorhanden."
+fi
+
+# 4. Pakete: openssh-server (Zorin-Desktop bringt ihn nicht mit) + python3
+export DEBIAN_FRONTEND=noninteractive
+NEEDED_PKGS=()
+command -v python3 >/dev/null 2>&1 || NEEDED_PKGS+=("python3")
+dpkg -s openssh-server >/dev/null 2>&1 || NEEDED_PKGS+=("openssh-server")
+if (( ${#NEEDED_PKGS[@]} )); then
+    apt-get update -qq
+    apt-get install -y "${NEEDED_PKGS[@]}"
+    echo "Installiert: ${NEEDED_PKGS[*]}"
+else
+    echo "openssh-server + python3 bereits vorhanden."
+fi
+
+# 5. sshd sicher aktiv
+systemctl enable --now ssh >/dev/null 2>&1 || systemctl enable --now sshd >/dev/null 2>&1 || true
+systemctl is-active --quiet ssh && echo "sshd laeuft." || echo "WARN: sshd nicht aktiv." >&2
+
+# 6. UFW-Regel, falls Firewall aktiv
+if command -v ufw >/dev/null 2>&1 && ufw status | grep -q "Status: active"; then
+    ufw allow 22/tcp >/dev/null && echo "UFW: Port 22 freigegeben."
+fi
+
+echo "--- Bootstrap abgeschlossen auf $(hostname) ---"