Why I can't read replicate data in MongoDB? -

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i have created replica set 4 mongod running. port: 2017, 2018, 2019, 2020

very standard. followed instruction in documentation.

then set 2020 primary one. , insert data.

then go , login one. e.g. ./mongo localhost:2017

and try find(). returns:

error: { "$err" : "not master", "code": 10107}

why ?? tried on other replicates , gave me same error.

i notice error in mongod output when insert data.

 failed allocate new file: /home/ec2-user/db/r04/test.1, size: 134217728, aborting.

i'm no clue what's going on yet.

you need set slaveok when querying slaves.


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