脚本如下

import paramiko
import re

# 设置要修改的新SSH端口号
NEW_SSH_PORT = 2222

# 设置要修改SSH端口的主机信息
HOSTS = [
    {'hostname': '10.0.0.1', 'username': 'root', 'password': 'your_password'},
    {'hostname': '10.0.0.2', 'username': 'root', 'key_file': '/path/to/your/key_file'},
    # 添加更多主机
]

# SSH配置文件路径
SSH_CONFIG_FILE = '/etc/ssh/sshd_config'

def modify_ssh_port(client, new_port):
    """修改SSH端口号"""
    # 读取SSH配置文件内容
    stdin, stdout, stderr = client.exec_command(f'cat {SSH_CONFIG_FILE}')
    ssh_config = stdout.read().decode()

    # 使用正则表达式替换端口号
    new_config = re.sub(r'#?\s*Port\s+\d+', f'Port {new_port}', ssh_config)

    # 备份原始配置文件
    stdin, stdout, stderr = client.exec_command(f'cp {SSH_CONFIG_FILE} {SSH_CONFIG_FILE}.bak')

    # 写入新的配置文件内容
    stdin, stdout, stderr = client.exec_command(f'echo "{new_config}" > {SSH_CONFIG_FILE}')

    # 重启SSH服务
    stdin, stdout, stderr = client.exec_command('systemctl restart sshd')
    print(f'主机 {client.get_transport().getpeername()[0]} 的SSH端口已修改为 {new_port}')

def main():
    for host in HOSTS:
        try:
            client = paramiko.SSHClient()
            client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            if 'key_file' in host:
                client.connect(hostname=host['hostname'], username=host['username'], key_filename=host['key_file'])
            else:
                client.connect(hostname=host['hostname'], username=host['username'], password=host['password'])
            modify_ssh_port(client, NEW_SSH_PORT)
        except Exception as e:
            print(f'无法修改主机 {host["hostname"]} 的SSH端口: {e}')
        finally:
            client.close()

if __name__ == '__main__':
    main()