Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Cant you just use ebs optimized instance? On 14/05/2014 7:47 AM, "Csanad Novak" <csanad at pixelfusion.co.nz> wrote: > > Hi Arnold, > > I guess the challenge here is that the instance-storage get reseted completely (back to the point when its just a raw device without partitions) on every stop/start cycle. > > Currently I’m using a less than satisfactory solution on non critical servers, as follow: > > I’ve got mounted my instance-storage as /dev/sdb1 to /var > I’ve got mounted my ebs device as /dev/sdc1 to /mnt/var-backup > > I’ve lsyncd configured to sync from /var to /mnt/var-backup > > I’ve wrote a little bash script for auto partitioning and mounting. When the instance get stopped for any reason the instance storage gets reseted and the whole /var directory destroyed. After boot up my script repartitioning the instance storage, mount it, and then automatically rsync back the data from /mnt/var-backup. > > There is several issue with this architecture, but the biggest one with lsyncd, which wasn’t designed for this. If I cloud change lsyncd to drbd, that would great. > > I must stress again: instance-storage is a local hard-disk based block device, while the ebs storage is a network attached block device. > > Cheers: > > Csanad > > > From: Arnold Krille arnold at arnoldarts.de > Reply: Arnold Krille arnold at arnoldarts.de > Date: 14 May 2014 at 6:18:25 > To: drbd-user at lists.linbit.com drbd-user at lists.linbit.com > Subject: Re: [DRBD-user] DRDB on one host > >> On Tue, 13 May 2014 09:57:21 +1200 Csanad Novak >> <csanad at pixelfusion.co.nz> wrote: >> > Recently on the latest AWS Summit I’ve seen an interesting setup for >> > utilising the AWS EC2 instance storage. The instance storage is the >> > local filesystem on the Amazon cloud, unfortunately it is not >> > persistent - all data get lost if the instance stops. For persistent >> > storage one must use an so called EBS volume, which is a network >> > attached block device. Unfortunately the EBS storage performance is >> > varies, depending on the neighbour instances’ traffic. An ideal world >> > one can use the instance storage without the worry of data loss. >> > >> > On the latest AWS Summit a presenter proposed an architecture where >> > the instance storage was utilised and was synced with DRBD to the EBS >> > block >> > device. http://www.slideshare.net/AmazonWebServices/so-you-think-you-are-an-aws-ninja-dean-samuels - >> > slide 11. >> > >> > I wonder how an example config would looks like. I went trough >> > quickly on the tutorials, but couldn’t find any example with one host >> > setup. >> >> drbd on one host. Isn't that what raid/md is? >> >> I haven't had a chance to play with aws but if both ebs volumes and the >> instance-storage are block devices, it should be easy to mirror them >> with md or lvm. >> >> - Arnold >> ________________________________ >> _______________________________________________ >> drbd-user mailing list >> drbd-user at lists.linbit.com >> http://lists.linbit.com/mailman/listinfo/drbd-user > > -- > Kind regards, > > Csanad Novak > Technical Lead > P / 09 353 1234 > M / 021 060 1531 > E / csanad at pixelfusion.co.nz > W / PIXELFUSION.CO.NZ / WHERE DESIGN & DEVELOPMENT FUSE > A / SUITE 403 "FORBIDDEN", THE IRON BANK, 150 KARANGAHAPE RD, AUCKLAND / PIXEL FUSION LTD, PO BOX 68 564, NEWTON, AUCKLAND / MAP > > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20140514/79013a24/attachment.htm>