Re: ceph-iscsi: problem when discovery auth is disabled, but gateway receives auth requests

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On 04/18/2019 06:24 AM, Matthias Leopold wrote:
> Hi,
> 
> the Ceph iSCSI gateway has a problem when receiving discovery auth
> requests when discovery auth is not enabled. Target discovery fails in
> this case (see below). This is especially annoying with oVirt (KVM
> management platform) where you can't separate the two authentication
> phases. This leads to a situation where you are forced to use discovery
> auth and have the same credentials for target auth (for oVirt target).
> These credentials (for discovery auth) would then have to be shared for
> other targets on the same gateway, this is not acceptable. I saw that
> other iSCSI vendors (FreeNAS) don't have this problem. I don't know if
> this is Ceph gateway specific or a general LIO target problem. In any
> case I would be very happy if this could be resolved. I think that
> smooth integration of Ceph iSCSI gateway and oVirt should be of broader
> interest. Please correct me if I got anything wrong.
> 
> kernel messages when discovery_auth is disabled, but auth requests are
> received
> 
> Apr 18 13:05:01 ceiscsi0 kernel: CHAP user or password not set for
> Initiator ACL
> Apr 18 13:05:01 ceiscsi0 kernel: Security negotiation failed.
> Apr 18 13:05:01 ceiscsi0 kernel: iSCSI Login negotiation failed.
> 

Incase other people hit this, it can be tracked here:

https://github.com/ceph/ceph-iscsi/issues/68

It's a kernel bug where when disabling discovery_auth the kernel was
still requiring CHAP.
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