On Wed, Jul 31, 2019 at 4:41 PM Michael Frank <[email protected]> wrote:
> Hi, > > since several days i try to install the hosted engine initially to an > iscsi multipath device without success. > Some information on the environment: > - Version 4.3.3 > - using two 10gbe interfaces as single bond for the ovirtmgmt interface > - using two 10gbe storage interfaces on each hypervisor for iscsi storage > -- each storage interface is configured without any bonding, etc > -- each storage interface lives in a separate vlan were also the iscsi > Portals/target are available, the iscsi portals have 4x10ge interfaces > each, (2 in vlan xx and 2 interfaces in vlan yy ) > -- so; each storage interface is connected to two iscsi Portals via 4 > interfaces > > The documentation here is for me unclear: > > https://ovirt.org/documentation/self-hosted/chap-Deploying_Self-Hosted_Engine.html > >Note: To specify more than one iSCSI target, you must enable multipathing > before deploying the self-hosted engine. There is also a Multipath >Helper > tool that generates a script to install and configure multipath with > different options. > > This indicates for me that it should be possbile to install the HE > directly on the /dev/mapper/mpath device which is availibale when I have > prepared the host accordingly before installing the HE (log in to multiple > iscsi targets, create proper multipath,conf, etc) - right ? > > I login to the two iscsi portals and get in sum 8 pathes, 4 from each > interface and iscsi target. > Basically I have then the mpath device on the hypervisor available and i > can mount the mpath device and put data on it. > In the cockpit interface the mount can also be activated and is recognized > correctly. > multipathd -ll and lsblk looks good. Everything seems to be fine. > > But when I run the "hosted-engine" --deploy, the last option while running > the assistant is to enter the iscsi data. > So, basically i just want to define my mpath device - when entering the > data (ip, port)for the iscsi Portal I can see the 4 pathes of the single > hosted Engine target, > and when i choose the path where the "lun" is finally available it fails. > I think in general this option is not that what i want to have > here for using the multipath device. > > I' m lost - what is the usual way to install the HE on a multipath device ? > Sorry for the delay, I missed this thread. >From ovirt-hosted-engine-setup you can configure the iSCSI storage domain, exposed by a single iSCSI target, to be accessed over multiple portals in a single portal group. Once you have a running engine you can eventually complete the configuration creating an iSCSI bond from there. Follow this guide for that: https://ovirt.org/documentation/admin-guide/chap-Storage.html#configuring-iscsi-multipathing Let's now focus on the first part. On your SAN you should create more than one iSCSI portal. Then you should group them in a single iSCSI target portal group. You iSCSI target should be configured to be exposed over the whole iSCSI target portal group. Then you have to create a LUN for the hosted-engine storage domain and associate it with that iSCSI target. Now, on hosted-engine-setup (via CLI or via cokpit) you should enter the IP address or one of the iSCSI portals (and eventually one username/password couple for the iSCSI discovery). The iSCSI discovery process will report back your iSCSI targets and the address of other iSCSI portals in the same iSCSI target portal group; each of them will be a path so if you have more than one iSCSI portal in a single iSCSI target portal group you will have multipath. Next step is choosing one of the listed iSCSI targets, then hosted-engine-setup will list the LUNs there and you will be able to choose one of them to be used for the hosted-engine storage domain. > > Do i have to change the configuration of the storage interfaces or the > iscsi network design? > Did I missed something obvious ? > Can I put in my multipath data into the answerfile to get rid of the last > step of the assistant ? > Can I use the related ansible role for specify the Mpath device which is > available when activating the multipath service ? > > Is it not possible in general ?? : > https://bugzilla.redhat.com/show_bug.cgi?id=1193961 > > Sorry in advance for the long mail .... 1!^^ > > br, > michael > > Sent from a mobile device > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/QRL2FYUD66C5J2RKC4UJZP4OQJWXWSB5/ >
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