22 lines
1008 B
Bash
22 lines
1008 B
Bash
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#!/usr/bin/env bash
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# Phase 2 Security: SSH key-based auth (disable password). Default: dry-run.
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# Usage: ./scripts/security/setup-ssh-key-auth.sh [--dry-run|--apply]
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# --apply: run on LOCAL host only. For remote: ssh root@host 'sudo sed -i.bak "s/^#*PasswordAuthentication.*/PasswordAuthentication no/" /etc/ssh/sshd_config && sudo systemctl reload sshd'
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set -euo pipefail
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DRY_RUN=true
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[[ "${1:-}" == "--apply" ]] && DRY_RUN=false
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echo "[Phase 2 Security] SSH: disable password auth (DRY_RUN=$DRY_RUN)"
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if $DRY_RUN; then
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echo "On each host run: sudo sed -i.bak 's/^#*PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config && sudo systemctl reload sshd"
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echo "See: docs/03-deployment/OPERATIONAL_RUNBOOKS.md § Security"
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exit 0
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fi
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if [[ -f /etc/ssh/sshd_config ]]; then
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sudo sed -i.bak 's/^#*PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
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sudo systemctl reload sshd 2>/dev/null || true
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echo "[OK] PasswordAuthentication disabled on this host."
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fi
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