Am 2021-02-24 um 10:57 schrieb Piotr Kilar: > Hello, > I'm using Your check_tcp plugin and i'm need to monitor stunnel, but got > one issue. > When stunnel certificates are expired or remote host is rejecting my > connection check_tcp is showing me OK - port is open, and it is true > because there is open local tcp port binded by stunnel process. But when > using f.e. telnet i can see that "Connection closed by remote host" and see > why in stunnel logs. Is it possible to adapt check_tcp to show CRIT in that > cases (immediate port closure by remote host)? > > best regards, > Piotr >
Hi Piotr, check_tcp does exactly what its name says: it checks a tcp port. Since the port is open, the result is OK. If you want to check on an SSL certificate, you should use other plugins, like check_ssl_cert. Or try to initiate some traffic over the port, whatever software is at the back end of the stunnel (like, mail, web server, ...). HTH, Werner --
smime.p7s
Description: S/MIME Cryptographic Signature
