Slack webhook cannot get URL ssl connection error

[Trixikus]

Hello, An error occurs with zabbix_url , what can it be related to and how to fix it? Slack notification failed : Error: cannot get URL: SSL connect error

[Glencoe]

It looks like your Zabbix instance uses libcurl that can not validate slack.com certificate. Check your curl version and make sure it can verify Slack's certificate and CAs.

[Trixikus]

version 7.61.1

curl https://slack.com/api/
curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to slack.com:443



I think this is really the problem.

[Trixikus]

Curl version updated, but now curl: (35) OpenSSL SSL_connect: Reset peer connection when connecting to api.slack.com:443

[Glencoe]

Try running curl with -v option, it should give you more hints.

[Trixikus]

curl -v https://api.slack.com
* Trying 3.10.95.11:443...
* Connected to api.slack.com (3.10.95.11) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
* CAfile: /etc/pki/tls/certs/ca-bundle.crt
* CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* OpenSSL SSL_connect: Connection reset by peer in connection to api.slack.com:443
* Closing connection 0
curl: (35) OpenSSL SSL_connect: Connection reset by peer in connection to api.slack.com:443

[Glencoe]

Not much clue in here.. How about curl --trace log.txt ?

[somesh_k]

Hi ,
Any solution on above problem.I am facing same issue in the webhook call.