SSH 连接无声

Question

我已经对这个问题进行故障排除很长时间了，但还是无法找出问题的原因。我们在 AIX 服务器上运行了一个作业，该作业使用 Perl::SFTP 连接到 Linux RHEL 7 服务器。这个作业大约有 3/10 次运行成功。这是我在 /var/log/secure 中看到的有关连接的信息。出于工作安全原因，不得不删除一些内容。

工作时的样子

Jul 22 03:17:28 hostname sshd[28505]: Set /proc/self/oom_score_adj to 0
Jul 22 03:17:28 hostname sshd[28505]: Connection from 10.8.**.*** port 45372
Jul 22 03:18:49 hostname sshd[28505]: Failed publickey for user1 from 10.8.**.*** port 45372 ssh2
Jul 22 03:18:49 hostname sshd[28505]: pam_succeed_if(sshd:auth): requirement "user in root:db2dba" not met by user "user1"
Jul 22 03:18:49 hostname sshd[28505]: Accepted password for user1 from 10.8.**.*** port 45372 ssh2
Jul 22 03:18:49 hostname sshd[28505]: pam_unix(sshd:session): session opened for user user1 by (uid=0)

失败时就是这样的。日志中除了这些就没什么了

Jul 22 14:37:04 hostname sshd[3697]: Set /proc/self/oom_score_adj to 0
Jul 22 14:37:04 hostname sshd[3697]: Connection from 10.8.**.*** port 46718

这是作业失败时的输出

Computing shared secret key.
Verifying server signature.
Waiting for NEWKEYS message.
Send NEWKEYS.
Enabling encryption/MAC/compression.
Sending request for user-authentication service.
Failed transmitting /model/claims/jobs/data/EA_COVERAGESFEED.DAT

这是工作成功

Computing shared secret key.
Verifying server signature.
Waiting for NEWKEYS message.
Send NEWKEYS.
Enabling encryption/MAC/compression.
Sending request for user-authentication service.
Service accepted: ssh-userauth.
Trying empty user-authentication request.
Authentication methods that can continue: publickey,gssapi-keyex,gssapi-with-mic,password.
Next method to try is publickey.
Trying pubkey authentication with key file '/model/.ssh/id_dsa'
Authentication methods that can continue: publickey,gssapi-keyex,gssapi-with-mic,password.
Next method to try is publickey.
Next method to try is password.

任何想法或帮助都将不胜感激。抱歉，我无法提供有关该职位的更多信息，因为我无法访问它。