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#mongodb logs for Friday the 1st of May, 2015
[02:47:49] <tejasmanohar> what operator can i use to make sure array field in results includes a value
[02:54:27] <Boomtime> tejasmanohar: you don't need an operator for that, the regular match syntax looks inside arrays
[03:19:03] <Boomtime> "req.user._id"? - assuming this is some local variable in your code which contains the value you are searching for, then yes, this will be fine
[10:18:03] <inad922> If I have a cluster with 2 routers, 3 config servers and n shards each of which has a master and a slave node how can I monitor if an instance goes down?
[10:18:23] <inad922> Is there some common method to do this or to monitor the health of the whole cluster in some way?
[10:55:11] <ixti> oh. while trying to explain, realized that i forgot to check one thing that might be the issue...
[11:14:37] <ixti> am I assuming correct, that if I explicitly specify hint with index I want to use then it will be used?
[11:15:53] <ixti> sometimes, when I run query like: `{ pn: { $in: [...] } }` with sort by `{ grc: -1 }`
[11:16:38] <ixti> i'm getting error: failed with error 17144: "Executor error: Overflow sort stage buffered data usage of 33637218 bytes exceeds internal limit of 33554432 bytes"
[11:16:51] <cheeser> a hint is just a suggestion. i don't think it'll force the query engine to use it.
[11:16:59] <inad922> If I have a sharded cluster and I would like to add a new shard is it enough to register the new shard on one router and that will update the config servers or do I need to do this registration on all the routers? I guess not.
[11:21:00] <ixti> `"$query"=>{"ve"=>true, "grc"=>{:$gt=>200}, "pn"=>{:$in=>[...]}}, "$hint"=>{"pn"=>1, "grc"=>-1}, "$orderby"=>{"grc"=>-1}}` and the error above...
[11:24:36] <ixti> deathanchor: yeah. i'm doing sort. and that issue seems really what I experience... but i'm runnnig that on mongo 3.0
[11:25:24] <ixti> in my case it matches. so according to that issue - i should have correct behavior :((
[11:26:24] <ixti> although it's linked to another issue which seems to be even more similar to mine :D
[15:36:59] <pjammer> After many many days i can get my replSet to have the two members in a state of Down. Even MMS says they are down; I can mongo blah.host to each one from primary too, I'm at a loss at how to get past this.
[15:37:34] <pjammer> as my primary after 5 mins turns to secondary and then i have to hose the whole AWS volume because i don't know if there is a rs.forget_it_go_back_to_standalone
[15:38:17] <GothAlice> Rotating rapidly through primaries was a symptom of my own troubles with WT under MMS on under-sized hosts.
[15:39:49] <pjammer> but seriously it's been 4 days of Unknown status; then i got it to finally say Down.
[15:42:23] <GothAlice> pjammer: I'm not sure about 2.4 any more, but in 2.6+ at least, downgrading a replica set is relatively easy. Spin up arbiters if you need to get a node back up as primary, remove the nodes, then restart mongod without the --replSet option / config.
[15:44:16] <pjammer> and on every member logs says: [rsStart] replSet can't get local.system.replset config from self or any seed (EMPTYCONFIG)
[15:45:31] <pjammer> so when the docs mention spin up 2 standalones, i am NOT to put the replSet=rs0 line in those member's when i first start?
[15:46:57] <pjammer> Maybe i should ask how you both would migrate a standalone with 300GB /data directory in an AWS EBS volume to a repl set
[15:47:29] <pjammer> even the youtube ones look the same but none of them do it with production data
[18:34:01] <Ramone> hey all... any node.js users in here? Is there a way to validate mongo objectids as a type? eg this is false: mongo.ObjectID.isValid(mongo.ObjectID())
[19:41:18] <davidnknight> Anyone had issues with mongo error 'provided setName for Replicaset Connection does not match setName found in server seedlist'
[19:45:23] <deathanchor> happens when the command line (or startup option) for replsetname doesn't match the name in teh rs.config()
[19:46:21] <davidnknight> [1] server in replset set-5543ac2a97841f8d4400131b is not part of the specified setName set-5543ac2a97841f8d4400131b,mongodb://capital.3.mongolayer.com:10188/testdb
[19:47:04] <davidnknight> mongodbUri = 'mongodb://capital.2.mongolayer.com:10188,capital.3.mongolayer.com:10188/testdb?replicaSet=set-5543ac2a97841f8d4400131b';
[20:56:45] <BLZbubba> hi guys i am using mongodb-org-server-3.0.2 with wiredtiger. Is there a way in mongod.conf to tell mongod to use O_DIRECT for everything?
[23:36:32] <Omego2K> hey, this might be a very stupid question, but if I have a field whose type can be an array or string how can one project the array portion to one field and the string portion to another?