Question

我正在编写一个expect文件来连接以使用类似下面的脚本来处理与远程设备的交互，并且我遇到了一些问题。主要是，当我单独或交互式地（在跑步者上）运行脚本时，它可以按照我的意愿工作，但是当我在其中一个跑步者上使用Gitlab CI插入测试代码时，它会出现以下问题：

命令spawn /usr/bin/scp $rsaFile remote:/var/root/id_rsa.pub似乎没有出现在CI日志中（虽然第一个spawn /usr/bin/ssh remote命令出现了） - 我怀疑它根本没有被召唤。
相同的 spawn 命令持续向我提供以下消息，直到脚本在下一个 interact 命令停止执行："Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\n"
互动抱怨spawn id exp0 not open（我认为这可能是因为scp命令无法正常工作）

以下是代码：

spawn /usr/bin/ssh remote

expect {
    -re ".*assword:.*" {
        exp_send "password\r"; 
        exp_continue
    }
    -re ".*sh.*" {
        exp_send "mount -uw /\r";
        exp_send "nvram -somecommand"
        exp_send "exit\r"
    }
}

interact

# Copy over the key
set rsaFile "/var/root/Resources/id_rsa.pub"
spawn /usr/bin/scp $rsaFile remote:/var/root/id_rsa.pub;

expect {
    # 1&2 were added to the original script for debugging purposes
    -re "^id_rsa.pub.*" { #1: output I'd expect in case of successful scp
        exp_send "exit\r"
    }
    -re ".*assword:.*" {
        exp_send "password\r";
        exp_send "exit\r"
    }
    -re "Warning:.*Warning.*Warning.*" { #2: to debug the expect hanging
        exp_send "exit\r"
    }
}

interact;

这里是错误消息msg（期望在调试模式下）：

spawn /usr/bin/ssh remote

parent: waiting for sync byte

parent: telling child to go ahead

parent: now unsynchronized from child

spawn: returns {24373}

Gate keeper glob pattern for '.*assword:.*' is '*assword:*'. Activating booster.
Gate keeper glob pattern for '.*sh.*' is '*sh*'. Activating booster.

expect: does "" (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=no

Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.

expect: does "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\n" (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=no

root@fe80::cccc:48ff:fe33:3344%en4's password: 

expect: does "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: " (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=yes re=yes

expect: set expect_out(0,string) "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: "

expect: set expect_out(spawn_id) "exp6"

expect: set expect_out(buffer) "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nroot@fe80::cccc:48ff:fe33:3344%en4's password: "

send: sending "password\r" to { exp6 }

expect: continuing expect

expect: does "" (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=no

expect: does "\r\n" (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=no

expect: does "\r\n\u001b[?1034h" (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=no

-sh-3.2# 

expect: does "\r\n\u001b[?1034h-sh-3.2# " (spawn_id exp6) match regular expression ".*assword:.*"? Gate "*assword:*"? gate=no

".*sh.*"? Gate "*sh*"? gate=yes re=yes

expect: set expect_out(0,string) "\r\n\u001b[?1034h-sh-3.2# "

expect: set expect_out(spawn_id) "exp6"

expect: set expect_out(buffer) "\r\n\u001b[?1034h-sh-3.2# "

send: sending "mount -uw /\r" to { exp6 }

send: sending "nvram -some-command" to { exp6 }

send: sending "exit\r" to { exp6 }

interact: received eof from spawn_id exp0

parent: waiting for sync byte

parent: telling child to go ahead

parent: now unsynchronized from child

spawn: returns {24376}

Gate keeper glob pattern for '^id_rsa.pub.*' is 'id_rsa?pub*'. Activating booster.
Gate keeper glob pattern for '.*assword:.*' is '*assword:*'. Activating booster.
Gate keeper glob pattern for 'Warning:.*Warning.*Warning.*' is ''. Not usable, disabling the performance booster.

expect: does "" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? Gate "id_rsa?pub*"? gate=no

".*assword:.*"? Gate "*assword:*"? gate=no

"Warning:.*Warning.*Warning.*"? (No Gate, RE only) gate=yes re=no

expect: does "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? Gate "id_rsa?pub*"? gate=no

".*assword:.*"? Gate "*assword:*"? gate=no

"Warning:.*Warning.*Warning.*"? (No Gate, RE only) gate=yes re=no

expect: does "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? Gate "id_rsa?pub*"? gate=no

".*assword:.*"? Gate "*assword:*"? gate=no

"Warning:.*Warning.*Warning.*"? (No Gate, RE only) gate=yes re=no

expect: does "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n" (spawn_id exp1) match regular expression "^id_rsa.pub.*"? Gate "id_rsa?pub*"? gate=no

".*assword:.*"? Gate "*assword:*"? gate=no

"Warning:.*Warning.*Warning.*"? (No Gate, RE only) gate=yes re=yes

expect: set expect_out(0,string) "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n"

expect: set expect_out(spawn_id) "exp1"

expect: set expect_out(buffer) "Warning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\nWarning: Permanently added 'fe80::cccc:48ff:fe33:3344%en4' (ECDSA) to the list of known hosts.\r\n\r\n\r\n\r\n\r\n\r\n"

send: sending "exit\r" to { exp1 }

interact: spawn id exp0 not open
    while executing
"interact"
    (file "./Resources/Setup.command" line 44)

ERROR: Build failed: exit status 1

任何帮助将不胜感激！提前致谢顺便说一句，这个问题让我觉得很烦人，因为这是我第一篇关于堆栈溢出的帖子。：）

Answer 1

试试这样：

spawn /usr/bin/ssh remote

expect {
    -re ".*assword:.*" {
        exp_send "password\r";
        exp_continue
    }
    -re ".*-sh-.*" {
        exp_send "mount -uw /; nvram -somecommand; exit\r"
        exp_continue
    }
    eof {}
}
wait

set rsaFile "/var/root/Resources/id_rsa.pub"
spawn /usr/bin/scp $rsaFile remote:/var/root/id_rsa.pub;

expect {
    -re ".*assword:.*" {
        exp_send "password\r";
        exp_continue
    }
    eof {}
}
wait

您的interact可能会失败，因为那时 spawn ed进程可能已经退出，显然它无法与 dead 进行交互 em> process。

对于您的脚本，我的expect eof基本上与您的interact具有相同的效果。他们都等待 spawn ed过程完成。这里的不同之处在于时机。当 spawn ed进程退出时，expect eof只会产生错误。

本地运行的expect脚本运行正常，但在通过gitlab CI运行时挂起

1 个答案: