Cta-frontend-grpc fails to start after upgrading to 5.11.2.0-1

Troubleshooting
1

Hi,

After the upgrade to version 5.11.2.0-1, the cta-frontend-grpc fails to start. The parameters “no-log-header” and “port” are no longer required, but they are still included in the systemd service unit file.

ExecStart=/usr/bin/cta-frontend-grpc --no-log-header --port ${GRPC_PORT}

The new version requires a configuration file, but it’s not included in the rpm.

If we try to use this example , it doesn’t work either.

Reviewing this issue with Mwai from Desy, he has seen that the cta-frontend-grpc starts if we add the following lines to the configuration file:

cta.instance_name test
cta.schedulerdb.scheduler_backend_name vfstest
cta.catalogue.numberofconnections 10
cta.objectstore.backendpath /ctavfs
cta.log.url file:/var/log/cta/cta-frontend-grpc.log
cta.log.format default
cta.schedulerdb.numberofthreads 100
cta.schedulerdb.threadstacksize_mb 1
cta.schedulerdb.enable_repack_requests off
cta.schedulerdb.enable_user_requests off

We are not sure why this extra configuration is needed because it’s already present in the cta-frontend-xrootd.conf.

Many thanks,
Esther

2

Hi Esther,

This version indeed introduced some changes to the gRPC frontend but the example.conf file was not updated, nor the systemd service file. The configuration file for the grpc-frontend is now expected to be found in /etc/cta/cta-frontend-grpc.conf, so these values indeed need to be added there. This is the default location but you could try to pass the config as a command-line option when starting the frontend to override it, (option -c <path_to_config>)

I will update these files right away. Thank you for reporting the issue.

3

Also please note that the port is now specified as a config entry, as shown in the example file, and the --no-log-header option is also replaced by the following config entry:

cta.log.log_header false

If this line is skipped, the default behaviour is to log the header.

4

Hi Konstantina,

Thank you very much for reviewing this problem.