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POMongos Install/Setup in Elastic Beanstalk
 

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    <p>Looking down the road at sharding, we would like to be able to have multiple mongos instances. The recommendation seems to be to put mongos on each application server. I was thinking I'd just load balance them on their own servers, but this article <a href="http://craiggwilson.com/2013/10/21/load-balanced-mongos/" rel="noreferrer">http://craiggwilson.com/2013/10/21/load-balanced-mongos/</a> indicates that there are issue with this.</p> <p>So I'm back to having it on the application servers. However, we are using Elastic Beanstalk. I could install Mongo on this as a package install. But, this creates an issue with Mongos. I have not been able to find out how to get a mongos startup going using the mongodb.conf file. For replicated servers, or config servers, additional entries in the conf file can cause it to start up the way I want. But I can't do that with Mongos. If I install Mongo, it actually starts up as mongodb. I need to kill that behaviour, and get it to start as Mongos, pointed at my config servers.</p> <p>All I can think of is:</p> <p>Kill the mongodb startup script, that autostarts the database in 'normal' mode. Create a new upstart script that starts up mongos, pointed at the config servers.</p> <p>Any thoughts on this? Or does anyone know if I'm just being obtuse, and I can copy a new mongodb.conf file into place on beanstalk that will start up the server as mongos?</p> <p>We are not planning on doing this right off the bat, but we need to prepare somewhat, as if I don't have the pieces in place, I'll need to completely rebuild my beanstalk servers after the fact. I'd rather deploy ready to go, with all the software installed.</p>
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