2,899 reputation
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bio website comerford.cc
location Ireland
age 35
visits member for 2 years, 11 months
seen 13 hours ago

I currently work for MongoDB, Inc. and have a background in operations, networking and system administration. You can find me in all the usual places, but probably the most useful and relevant are listed below:

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13h
awarded  Civic Duty
Dec
16
comment adding mongodb authentication breaks connecting via nodejs
two things: First, please post a code sample so that (at a minimum) others can try this out and debug. Second, can you connect with that user from the shell and run the operations you want from the shell? Finally, if this a code issue, then this may be more appropriate for StackOverflow than Serverfault
Dec
10
answered Readahead for /var/lib/mongo is set to 4096KB
Dec
4
answered mongorestore with indexing in foreground
Nov
28
awarded  Constituent
Nov
24
answered Is mongorestore ditrectly to a path with the --dbpath faster than restoring to a running mongod instance?
Nov
17
awarded  Caucus
Nov
7
answered MongoDB copyDatabase command succsefasully copies database, but gives me a different size on the ner server
Oct
7
comment Background indexing MongoDB on server
for reference, you can check to see if the index build is still running on the mongod by running db.currentOp() from the mongo shell or by looking in the logs for that instance (it will log index build progress periodically and give you a percentage completion figure).
Oct
1
comment How to start Mongo daemon with auth support
You should ask a new question and detail what versions (of OS, MongoDB) you are using, the error you are getting, and what your config looks like. There was no problem when I did the procedure above, so it's basically likely that the problem was user error or similar since the issue is not reproducible.
Sep
30
awarded  Explainer
Sep
14
comment mongodb keep looping while trying to sync data
ulimits might be the cause, if the primary is seeing a significant number of connections - the best way to find out is to increase the number and see if that solves the issue (or look at the available connections in db.serverStatus(). Without some detailed troubleshooting all we can do is guess at the root cause of the connection problems
Sep
12
answered mongodb keep looping while trying to sync data
Sep
8
comment How to construct a MongoDB Health Check in HAProxy?
And I must have had a typo when I did my original partial binary check (which led me to believe it did not work). I have edited (and attributed) to reflect this, and added my successful binary check for good measure - thanks for the help. @Baptiste - the answer probably makes more sense as a comment, so I would suggest removing it - or you can edit to make it correct (s/string/binary/) to make it less confusing if someone does read through in the future.
Sep
8
revised How to construct a MongoDB Health Check in HAProxy?
Added more complete binary check, attributed edits
Sep
8
accepted How to construct a MongoDB Health Check in HAProxy?
Sep
2
comment How to construct a MongoDB Health Check in HAProxy?
Retested with tcp-check expect string 6f6b and the health check is now failing, so "ok" looks like the correct way to go for the MongoDB case
Sep
2
comment How to construct a MongoDB Health Check in HAProxy?
Confirmed that a string check of "ok" does work with my example (checked with mongod, mongos and made sure HAProxy marked them as UP), "ok" is found in the response as a string 6f6b is just the hex/ASCII representation of ok in any case, so it's the same match. I thought that "ok" made more sense since it is listed as a string match, not binary (and a binary match fails because it tries to match the whole buffer I believe)
Sep
1
asked How to construct a MongoDB Health Check in HAProxy?
Sep
1
answered How to construct a MongoDB Health Check in HAProxy?