[Users] ZCS OSE Hot DR Solutions

[Truong Anh Tuan]

On 09/27/2016 02:42 AM, Andrew Martin wrote:
> Hello,
> 
> I am running ZCS OSE 8.7 on Ubuntu 14.04 in a single-node
> configuration. My current backup/DR strategy is to perform these
> steps nightly: * zmcontrol stop * rsync -avHKS --delete /opt/zimbra
> backupserver:/opt/zimbra * zmcontrol start * mysqldump all tables
> (just as a precaution) * zmslapcat (just as a precaution)
> 
> This works pretty well, but it has a couple disadvantages: *
> requires zimbra downtime every night * RPO of 24 hours
> 
> It would be nice to have an OSE hot backup solution as well,
> nothing as fancy as ZExtras Backup (which does per-account
> restore), but just a basic DR solution. It seems like this would be
> possible with a combination of the following: * rsync /opt/zimbra
> to catch index, misc files, and store * zmslapcat to get the LDAP
> database * Percona XtraBackup for consistent MySQL backups
> 
> The challenge would be making sure that the database backup and 
> /opt/zimbra/store were in sync.
> 
> Has anyone developed a solution for OSE hot DR backups, or
> something similar to what I've described?

We have done this well by using Snapshot. All you need is choose a
file system that supports snapshot for your Zimbra partition /opt/zimbra.

Here we chose LVM snapshot. Please see a sample at:
https://github.com/EmailConsortium/zimbra-lvm-backup

For DB + LDAP in sync with files, you should do DB + LDAP dumping
before snapshot + rsync files. Your process should be changed to:
* mysqldump all tables (just as a precaution)
* zmslapcat (just as a precaution)
* Start snapshot
* rsync -avHKS --delete /opt/zimbra backupserver:/opt/zimbra
* End snapshot
(no downtime needed)

-- 
Rgds,
Tuan

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