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Multi-Master Question when network partition
- To: "firstname.lastname@example.org" <email@example.com>
- Subject: Multi-Master Question when network partition
- From: Tony Dong <firstname.lastname@example.org>
- Date: Thu, 28 Apr 2011 17:57:40 +0800
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- References: <8CD3C1FC7D3CE44995BFA1F6A885F97F4EDC0FF73E@MX18A.corp.emc.com>
> In OpenLDAP 2.4 admin guide "chapter 18: Replication" 220.127.116.11. Arguments against Multi-Master replication:
> If a network is partitioned and multiple clients start writing to each of the "masters" then reconciliation will be a pain; it may be best to simply deny writes to the clients that are partitioned from the single provider.
> How to configure to deny writes in a LDAP master?
> My environment is 3-way MMR, of A, B, C three servers. If connection between server A and server B is lost, how can server A and B automatically deny writes and become read-only? As server C can still accept write operations, and sync with both server A and B, so data in server A and B is up-to-date and thus can act as slaves temporarily.
> Best Regards,
> Tony Dong