Redeploying the iSCSI Gateway fails with an error: required file missing from config-json: iscsi-gateway.cfg

This document (000020419) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Enterprise Storage 7

Situation

When redeploying the iSCSI Gateway this fails with the following backtrace:

Oct 28 09:25:50 ceph-node conmon[1962]: cephadm 2021-09-13T07:10:57.432279+0000 mgr.ceph-node (mgr.2854462) 2767519 : cephadm [ERR] cephadm exited with an error code: 1, stderr:Redeploy daemon iscsi.iscsi-gw.ceph-gw.lrvtgo ...
Oct 28 09:25:50 ceph-node conmon[1962]: ERROR: required file missing from config-json: iscsi-gateway.cfg
Oct 28 09:25:50 ceph-node conmon[1962]: Traceback (most recent call last):
Oct 28 09:25:50 ceph-node conmon[1962]: File "/usr/share/ceph/mgr/cephadm/module.py", line 1021, in _remote_connection
Oct 28 09:25:50 ceph-node conmon[1962]: yield (conn, connr)
Oct 28 09:25:50 ceph-node conmon[1962]: File "/usr/share/ceph/mgr/cephadm/module.py", line 1168, in _run_cephadm
Oct 28 09:25:50 ceph-node conmon[1962]: code, '\n'.join(err)))
Oct 28 09:25:50 ceph-node conmon[1962]: orchestrator._interface.OrchestratorError: cephadm exited with an error code: 1, stderr:Redeploy daemon iscsi.iscsi-gw.ceph-gw.lrvtgo ...
Oct 28 09:25:50 ceph-node conmon[1962]: ERROR: required file missing from config-json: iscsi-gateway.cfg

Resolution

Remove the relevant Gateway service and then deploy it again.

Cause

The error is due to a bug present in the Ceph Octopus code.

Additional Information

In managed mode, when a service is removed the orchestrator should add it again automatically after a short delay. To remove an iSCSI Gateway service execute:

ceph orch daemon rm iscsi.<iscsi_daemon_name>.<random_id>

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.