Dear all,
I am experimenting with Ceph setup. I set up a single node
(Asus P10S-M WS, Xeon E3-1235 v5, 64 GB RAM, 8x3TB SATA HDDs,
Ubuntu 18.04 Bionic, Ceph packages from
http://download.ceph.com/debian-luminous/dists/xenial/
and iscsi parts built manually per
http://docs.ceph.com/docs/master/rbd/iscsi-target-cli-manual-install/)
Also i changed 'chooseleaf ... host' into 'chooseleaf ... osd'
in the CRUSH map to run with single host.
I have both its Ethernets connected to the same LAN,
with different IPs in the same subnet
(like, 192.168.200.230/24 and 192.168.200.231/24)
mon_host in ceph.conf is set to 192.168.200.230,
and ceph daemons (mgr, mon, osd) are listening to this IP.
What I would like to finally achieve, is to provide multipath
iSCSI access through both these Ethernets to Ceph RBDs,
and apparently, gwcli does not allow me to add a second
gateway to the same target. It is going like this :
/iscsi-target> create iqn.2018-06.host.test:test
ok
/iscsi-target> cd iqn.2018-06.host.test:test/gateways
/iscsi-target...test/gateways> create p10s 192.168.200.230 skipchecks=true
OS version/package checks have been bypassed
Adding gateway, sync'ing 0 disk(s) and 0 client(s)
ok
/iscsi-target...test/gateways> create p10s2 192.168.200.231 skipchecks=true
OS version/package checks have been bypassed
Adding gateway, sync'ing 0 disk(s) and 0 client(s)
Failed : Gateway creation failed, gateway(s)
unavailable:192.168.200.231(UNKNOWN state)
host names are defined in /etc/hosts as follows :
192.168.200.230 p10s
192.168.200.231 p10s2
so I suppose that something does not listen on 192.168.200.231, but I
don't have an idea what is that thing and how to make it listen there.
Or how to achieve this goal (utilization of both Ethernets for iSCSI) in
different way. Shoud I aggregate Ethernets into a 'bond' interface with
single IP ? Should I build and use 'lrbd' tool instead of 'gwcli' ? Is
it acceptable that I run kernel 4.15, not 4.16+ ?
What other directions could you give me on this task ?
Thanks in advance for your replies.
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