php - php执行时scp主机 key 验证失败

Question

我正在尝试使用 scp 来复制文件。我使用 PHP 的命令 shell_exec 来执行这个命令:

scp -i/home/raul/nueva_clave -q -v /home/raul/www/CA/app/tmp/ImagenWeb TA-adm@127.0.0.1:/home/TA-adm/images/IMG_3846.JPG 2>&1

服务器地址是 127.0.0.1 因为我还在开发脚本。我稍后再更改。

我正在使用 scp 而不是 PHP 的 ssh2_scp_send，因为我不想在我的项目中写入服务器的密码。相反，我想使用公钥。但是当我在 PHP 中执行时，结果是这样的:

Executing: program /usr/bin/ssh host 127.0.0.1, user TA-adm, command scp -v -t -- /home/TA-adm/images/IMG_3846.JPG
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 127.0.0.1 [127.0.0.1] port 22.
debug1: Connection established.
debug1: SELinux support disabled
Could not create directory '/nonexistent/.ssh'.
debug1: identity file /home/raul/nueva_clave type 1
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
debug1: identity file /home/raul/nueva_clave-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1
debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 2d:71:67:30:89:c0:1a:64:41:b5:07:8f:6d:c5:9f:13
debug1: read_passphrase: can't open /dev/tty: No such device or address
Host key verification failed.
lost connection

如果我在终端中用我的用户执行这个命令，我没有问题。我想问题是用户 nobody 正在执行 scp。我正在使用 Ubuntu。

Answer 1

(由 OP 在问题编辑中回答。移至此处。参见 Question with no answers, but issue solved in the comments (or extended in chat))

OP 写道:

It's SOLVED. I've used the options:

-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no

so the scp command doesn't try to insert the host in the file known_host file of the user nobody (scp can't create the file because the user nobody has no home neither ~/.ssh).