When I was testing the first host failure, I found that the forests for Security and Schemas needed replicas to recover the cluster to a searchable state. I also made replicas of the App-Services forest so I could still use the Administrative ports (8000, 8001, 8002) as well while the first host was down.
From: [email protected] [mailto:[email protected]] On Behalf Of David Lee Sent: Monday, March 17, 2014 9:45 AM To: MarkLogic Developer Discussion Subject: Re: [MarkLogic Dev General] Security on MarkLogic Local Host Fail Over If there is only a primary security database and that host goes down, the entire cluster is effectively halted until that server comes up. It is common practice to replicate the security database as well as you "data" databases. Also depending on your application consider replicating other databases such as Schemas, Modules etc. Any non-replicated database will block use of that database if the only host that has a forest for it goes down. From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Cummings, Jeffrey T Sent: Monday, March 17, 2014 8:22 AM To: MarkLogic Developer Discussion Subject: [MarkLogic Dev General] Security on MarkLogic Local Host Fail Over I posted this on stack overflow, but I thought I'd throw it out to the community as well. Being a relative newbie to ML, I have a question that probably has an obvious answer, but I'll ask anyway. We have several ML clusters set up with local disk failover. However, the way it's set up here is that all members of the group have their security databases set to the security database on the cluster host. My question is, if the cluster host goes down, what happens to security on the other servers in the cluster? Should the security database instead be replicated across the cluster servers? Jeff Cummings Consultant, Chemical Abtracts Service Desk: 614-447-3600, ext 2400 Confidentiality Notice: This electronic message transmission, including any attachment(s), may contain confidential, proprietary, or privileged information from Chemical Abstracts Service ("CAS"), a division of the American Chemical Society ("ACS"). If you have received this transmission in error, be advised that any disclosure, copying, distribution, or use of the contents of this information is strictly prohibited. Please destroy all copies of the message and contact the sender immediately by either replying to this message or calling 614-447-3600.
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