How to enable debug logs in Rados gateway in Red Hat Ceph Storage?

Solution Verified - Updated -

Environment

  • Red Hat Ceph Storage (RHCS)
  • Rados Gateway

Issue

  • How to enable debug logs in Rados gateway in Red Hat Ceph Storage?

Resolution

  • There are 2 methods to do this depending on the situation:

Method 1 - Update the ceph.conf and restarting the RGW daemon:
* Add the following under the rgw section of the /etc/ceph/ceph.conf file of Rados gateway node:

debug ms = 1
debug rgw = 20
  • Restart the radosgw service:
# sudo systemctl list-units | grep -i rgw
# sudo systemctl restart ceph-radosgw@<$service_name>.service

Method 2 - Inject the parameters to the RGW services using it's admin socket (.asok):

  • Inject the debug values:
$ ceph --admin-daemon /var/run/ceph/ceph-client.rgw.<name>.asok config set debug_rgw 20
$ ceph --admin-daemon /var/run/ceph/ceph-client.rgw.<name>.asok config set debug_ms 1
  • Re-inject the default values:
$ ceph --admin-daemon /var/run/ceph/ceph-client.rgw.<name>.asok config set debug_rgw 1\/5
$ ceph --admin-daemon /var/run/ceph/ceph-client.rgw.<name>.asok config set debug_ms 0\/5
  • The logs will be inside /var/log/ceph/ on the Rados Gateway node.

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