/**
 * SSL Certificate Helper Utilities
 *
 * Provides functions for checking certificate existence and validity.
 * Used by certbot scanfix to determine if certs need to be obtained/renewed.
 */
export interface CertCheckResult {
    exists: boolean;
    valid: boolean;
    expiresInDays?: number;
    error?: string;
}
/**
 * Check if SSL certificate exists and is valid (not expiring soon)
 *
 * @param domain The domain to check
 * @param warnDays Days before expiration to trigger warning (default: 7)
 * @returns CertCheckResult with existence and validity info
 */
export declare function checkCertificate(domain: string, warnDays?: number): CertCheckResult;
/**
 * Check if nginx container is running
 *
 * @returns true if factiii_nginx container is running
 */
export declare function isNginxRunning(): boolean;
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