New Feature : Support iSCSI Block Storage as backend Storage in kubernetes

[jmjoo]

Is this a BUG REPORT or FEATURE REQUEST?: FEATURE REQUEST

What happened and What you expected to happen: I am testing kubernetes install version of opensds ( opensds/install/kubernetes ) If I have iscsi storage, Manually I should connect iscsi-initiator(iscsiadm) to node which dock pod placed. That way is weak for node failover. I think that container for connecting iscsi is needed before dock pod is started. Or High Availability tool like pacemaker should handle iscsi-initiator process for node failover. If it's possible, you can say that opensds can support iscsi storage. Perhaps it might be discussion point.

Environment:

• Hotpot(release/branch) version: v0.6.1
• OS (e.g. from /etc/os-release): Ubuntu 16.04.5 LTS
• Kernel (e.g. uname -a): 4.4.0-131-generic
• Install tools: kubectl apply -f ~/opensds/install/kubernetes/opensds-all.yaml
• Others: Kubernetes 1.14.7, Docker 18.06.1-ce

[jmjoo]

Also If there is other idea about node failover in kubernetes cluster, share the idea or let me know how to handle node failover.

[wisererik]

Hi @jaemin-joo you suggest adding a iSCSI storage into hotpot like Ceph, LVM, is that right?

[jmjoo]

@wisererik Hi~ Yes. I wish to use iscsi storage like Ceph, LVM. These days, ISCSI storage is used much more than other block storage like FC storage. I try to use ISCSI storage as LVM volume. but there are some problems. So I suggested new hotpot feature for ISCSI storage.