Getting write:errno=104 when i was trying to connect from vmware vcenter vm

Question

Hi,

We have enabled kafka cluster for public access. we are getting below error when we are trying to connect from virtual machines.

SSL_connect:SSLv3/TLS write client hello
read from 0x55e272aa0740 [0x55e272ab5f33] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF))
SSL_connect:error in SSLv3/TLS write client hello
write:errno=104
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 0 bytes and written 359 bytes
Verification: OK
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)

Answer

Hi,

Please note that errno 104 is ECONNRESET for "Connection reset by peer". This means that either the server closed the connection maybe due to problems with the setup or that the server was not even started or that there is some firewall between client and server blocking access. So could you please check if there is firewall between the VM and the cluster?

If that is not the case, I would suggest [raising a support ticket](https://docs.aws.amazon.com/awssupport/latest/user/case-management.html#creating-a-support-case) so we could check from the MSK cluster side.

Getting write:errno=104 when i was trying to connect from vmware vcenter vm

SSL_connect:SSLv3/TLS write client hello read from 0x55e272aa0740 [0x55e272ab5f33] (5 bytes => -1 (0xFFFFFFFFFFFFFFFF)) SSL_connect:error in SSLv3/TLS write client hello write:errno=104

no peer certificate available

No client certificate CA names sent

SSL handshake has read 0 bytes and written 359 bytes Verification: OK

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