3.8.13 -> Kernel pid terminated (application_controller)

[Jan Grewe]

Hi, i just updated the Debian package from 3.8.12-1 to 3.8.13-1, and then my instance failed to start with this error:

Feb 28 16:10:03 hades systemd[1]: Starting RabbitMQ broker...
Feb 28 16:10:05 hades rabbitmq-server[19958]: {"Kernel pid terminated",application_controller,"{application_start_failure,credentials_obfuscation,{{shutdown,{failed_to_start_child,credentials_obfuscaton_svc,{undef,[{crypto,cipher_info,[aes_128_cbc],[]},{credentials_obfuscation_pbe,iv_length,1,[{file,\"src/credentials_obfuscation_pbe.erl\"},{line,125}]},{credentials_obfuscation_pbe,encrypt,5,[{file,\"src/credentials_obfuscation_pbe.erl\"},{line,75}]},{credentials_obfuscation_svc,check,3,[{file,\"src/credentials_obfuscation_svc.erl\"},{line,163}]},{credentials_obfuscation_svc,init_state,0,[{file,\"src/credentials_obfuscation_svc.erl\"},{line,133}]},{gen_server,init_it,2,[{file,\"gen_server.erl\"},{line,374}]},{gen_server,init_it,6,[{file,\"gen_server.erl\"},{line,342}]},{proc_lib,init_p_do_apply,3,[{file,\"proc_lib.erl\"},{line,249}]}]}}},{credentials_obfuscation_app,start,[normal,[]]}}}"}
Feb 28 16:10:05 hades rabbitmq-server[19958]: Kernel pid terminated (application_controller) ({application_start_failure,credentials_obfuscation,{{shutdown,{failed_to_start_child,credentials_obfuscaton_svc,{undef,[{crypto,cipher_info,[aes_128_cbc
Feb 28 16:10:05 hades rabbitmq-server[19958]: [1B blob data]
Feb 28 16:10:05 hades rabbitmq-server[19958]: Crash dump is being written to: erl_crash.dump...done
Feb 28 16:10:05 hades systemd[1]: rabbitmq-server.service: Main process exited, code=exited, status=1/FAILURE
Feb 28 16:10:05 hades systemd[1]: rabbitmq-server.service: Failed with result 'exit-code'.
Feb 28 16:10:05 hades systemd[1]: Failed to start RabbitMQ broker.
Feb 28 16:10:15 hades systemd[1]: rabbitmq-server.service: Service RestartSec=10s expired, scheduling restart.
Feb 28 16:10:15 hades systemd[1]: rabbitmq-server.service: Scheduled restart job, restart counter is at 34.
Feb 28 16:10:15 hades systemd[1]: Stopped RabbitMQ broker.

I don't have any fancy config, just a couple of plugins enabled:

[rabbitmq_auth_backend_http,rabbitmq_management,rabbitmq_prometheus,rabbitmq_web_mqtt].
Other than that, i's pretty much just the package installed.

Any idea what could be wrong? The error message doesn't really tell me anything about the actual underlying issue...

thanks,
Jan

[Michal Kuratczyk]

Hi,

Seems like the erlang version is too old. You can see the supported versions here: https://www.rabbitmq.com/which-erlang.html.  If your Erlang/OTP version is older than 22.3, you are lucky 3.8.12 worked for you...

The important part of the error is "{undef,[{crypto,cipher_info,[aes_128_cbc],[]}" which points at this change introduced in 3.8.13: https://github.com/rabbitmq/credentials-obfuscation/blob/master/ChangeLog.md#changes-between-230-and-240-february-18-2021 which indeed dropped support for some old Erlang versions.

Best,

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Michał

RabbitMQ team

[Jan Grewe]

Thanks Michał,

updating my Apt sources to use the "erlang-22.x" repo fixed it!

cheers,

Jan