Jonathan, We're running dual master MySQL along with two trackers and 4 or 5 storage nodes. Seems to be working just fine:)
--Justin Jonathan Share wrote: > Hi, > > I'm currently evaluating the possibility of using MogileFS and had a > quick question regarding the database requirements of MogileFS. > > > Background: Total hardware allocated to this project right now is 2 > blade servers. The current plan is to run both servers in identical > configurations so that we can fail over to one server when necessary > (failure or software upgrade). This works fine for our application > (Python based) using MySQL in a dual master replication setup, the > current weak point is file storage, which is where I'm hoping to bring > in a MogileFS based solution. > > Question: Does anyone have experience of running MogileFS in a dual > master replication setup? From my own experience, if the database was > not designed for it you can have problems. > > If MogileFS does not support running in a dual master setup do I have > any other options for a HA solution? A colleague has suggested the NDB > table type but as this is entirely in memory I'm a little hesitent. > Would MogileFS be able to cope with the loss of the metadata in the > database (regenerating from the storage nodes perhaps) in the event of > the UPS failing (has happened once this year)? > > Thanks in advance. > > Jon >
