Python - paramiko 模块远程执行ssh 命令 nohup 不生效的问题解决

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1、使用 paramiko 模块ssh 登陆到 linux 执行nohup命令不生效

# 执行命令
def command(ssh_config, cmd, result_print=None, nohup=False):
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(hostname=ssh_config.hostname, port=ssh_config.port, username=ssh_config.username,
                password=ssh_config.password)
    print(ssh_config.hostname + '@' + ssh_config.username, ': ', cmd)
    stdin, stdout, stderr = ssh.exec_command(cmd)
    result = stdout.read()
    if result_print:
        lines = read_unicode(result)
        for line in lines:
            print(line)
    ssh.close()

因为执行完毕后，shell 会立即关闭通道

2、稍作修改，使用 invoke_shell

# 执行命令
def command(ssh_config, cmd, result_print=None, nohup=False):
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect(hostname=ssh_config.hostname, port=ssh_config.port, username=ssh_config.username,
                password=ssh_config.password)
    print(ssh_config.hostname + '@' + ssh_config.username, ': ', cmd)
    if nohup:
        cmd += ' & \n '
        invoke = ssh.invoke_shell()
        invoke.send(cmd)
        # 等待命令执行完成
        time.sleep(2)
    else:
        stdin, stdout, stderr = ssh.exec_command(cmd)
        result = stdout.read()
        if result_print:
            lines = read_unicode(result)
            for line in lines:
                print(line)
    ssh.close()