napsty / check_sftp

Monitoring plugin to check a remote SFTP server

check_sftp

This is a monitoring plugin written in Bash to check SFTP servers. The plugin supports both key and password authentication. Both open and encrypted (by passphrase) private keys are supported. The plugin will attempt to establish a connection to a specified SFTP server -H. After a successful connection, the plugin will upload and then download a temporary file into a specified remote directory -d.

This is the public repository for development.

Please visit the link below for the latest release and documentation:

https://www.claudiokuenzler.com/monitoring-plugins/check_sftp.php

check_sftp's Issues

Add support for protected/encrypted private key (passphrase)

When using an encrypted private key protected with a passphrase, check_sftp.sh doesn't work yet.

$ /usr/lib/nagios/plugins/check_sftp.sh -H sftpserver.example.com -u sftpuser -i ~/.ssh/private_key -o "-o StrictHostKeyChecking=no "
CHECK_SFTP CRITICAL: Unable to establish a connection to SFTP server with given credentials

By manually launching the sftp command shows the connection could not be established:

$ sftp -P 22 -i ~/.ssh/private_key -o StrictHostKeyChecking=no -b - [email protected]
[email protected]: Permission denied (publickey).

Without batch mode shows the key requests the passphrase:

$ sftp -P 22 -i ~/.ssh/private_key -o StrictHostKeyChecking=no [email protected]
Enter passphrase for key '~/.ssh/private_key': 

This is currently not covered.