[MarkLogic Dev General] RE: Two MarkLogics on one host?
Strawn, M. Shane
Shane.Strawn at wolterskluwer.com
Wed Mar 17 17:35:37 PST 2010
I thought it might be out of my league. We'll come up with another option. Thanks for your comments and suggestions. ~Shane
From: general-bounces at developer.marklogic.com on behalf of Danny Sokolsky
Sent: Wed 3/17/2010 6:52 PM
To: General Mark Logic Developer Discussion
Subject: [MarkLogic Dev General] RE: Two MarkLogics on one host?
In short, it is not recommended but it is possible. A better solution is to have 2 different computers, or if you are upgrading an application, just (after testing and backing up) upgrade to 4.x (for example, 3.2.11 > 4.0-7 > 4.1-5).
Here are some of the reasons/gotchas as to why it is not recommended. You need:
* different port numbers on each instance for the Admin Interface (8001 by default) and for xdqp (7999 by default)
* different data directories
* different MarkLogic installation directories
* different startup scripts
* you will have to do your own installation for the 2nd installation to change the above things
* upgrades will be problematic and manual
* all of the cache setting defaults assume that MarkLogic has access to the whole machine
* perhaps a few things that I have not thought of
I definitely recommend against trying this.
From: general-bounces at developer.marklogic.com [mailto:general-bounces at developer.marklogic.com] On Behalf Of Strawn, M. Shane
Sent: Wednesday, March 17, 2010 1:21 PM
To: general at developer.marklogic.com
Subject: [MarkLogic Dev General] Two MarkLogics on one host?
Quick question re: running two instances of MarkLogic on one host:
1) is it possible?
2) if so what are the big issues/gotchas if any?
3) if you're thinking "why would you want to do that?" then what's a better solution, assuming:
* you may want different versions of ML (v3 vs. v4)
* when the taskserver stops, the other taskserver keeps on trucking - perhaps in v4 the taskserver is not so difficult to resurrect?
Thanks in advance for your comments.
M. Shane Strawn
Wolters Kluwer Health
Professional and Education Division
Shane.Strawn at WoltersKluwer.com<mailto:Shane.Strawn at WoltersKluwer.com>
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