Goal:to migrate my local mongodb data to mongobd atlas cluster.
Try:
1. export local data as json.
2. import json to cluster.
OS: Linuxmint 19.1 Cinnamon
mongo --version
MongoDB shell version v4.0.10
mongod --version
db version v3.6.3
I also have a separate database folder.
So first I started
/home/me/mongodb/bin/mongod --dbpath=/home/me/mongodb-data
then I opened a terminal and typed
~/mongodb/bin $ mongoexport --db task-manager --collection users --out ~/Desktop/test.json
I expected the users collection from task-manager database will print out as a test.json file but I am getting the error:
2019-06-18T22:05:06.108+0200 connected to: localhost
2019-06-18T22:05:06.108+0200 Failed: Failed to parse: { find: "users", filter: {}, sort: {}, skip: 0, snapshot: true, $readPreference: { mode: "secondaryPreferred" }, $db: "task-manager" }. Unrecognized field 'snapshot'.
What's wrong and what should I do to fix it? Is there any better way to migrate data?
so I uninstalled everything mongodb and downloaded the server, shell and tool deb from their website and made sure they're all 4.0.10 for Ubuntu 18.04. Although the same version seems to be included in the synaptic, I decided to go directly install the deb, just in case, as I previously did command line installation and also from Software Manager which ended up having different versions. With versions correctly, I finally can output the json file as I wanted. I would also try the mongodump and mongorestore methods as @sachav mentioned.