MongoDB not connecting while using host option?

Question

I am unable to connect Atlas MongoDB while using --host option, But i'm able to connect while using --uri option where did i made a mistake?

For example:

--uri option It's working fine

mongodump --uri="mongodb+srv://<username>:<password>@<hostname>/<dbname>" --gzip --out=/dir1/dir2

--host option getting error like

Failed: error connecting to db server: no reachable servers

mongodump --host <hostname>:<port> --username <username> --password <password> --authenticationDatabase <dbusername> --gzip --db <dbname> --out /dir/dir2

Have you tried connecting using mongosh (mongo shell) using the same connection string? — Yahya, Mar 27 '23 at 08:38
I don't think that's possible, you have to use connectionString in URI format. — Wernfried Domscheit, Mar 27 '23 at 09:04
@Yahya I am able to login using mongosh here is the command `mongosh "mongodb+srv:///" --username ` — Krishnakumar, Mar 27 '23 at 09:54
@WernfriedDomscheit i have used the below command but it's taking all the database dump `mongodump --uri="mongodb+srv://:@/" --gzip --out=/home/dir1/` But i want specific database dump only. How can i get this done, Please guide me. — Krishnakumar, Mar 27 '23 at 09:58

score 0 · Answer 1 · answered Mar 27 '23 at 09:49

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As you can see here, if you connect using --uri you use a MongoDB URI resource (starting with mongodb://)

mongodump --uri="mongodb://mongodb0.example.com:27017" [additional options]

But if you use --host you don't, as this is not a MongoDB URI:

mongodump --host="mongodb0.example.com:27017"  [additional options]

Source: mongodump docs

answered Mar 27 '23 at 09:49

Diego Freniche

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Without URI option we can able to take dump is possible? Shall i use only host option? – Krishnakumar Mar 27 '23 at 10:16

score 0 · Answer 2 · answered Mar 27 '23 at 12:07

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Based on comment you can try this:

mongodump --uri="mongodb+srv://<username>:<password>@<hostname>/" --db=<dbname> --gzip --out=/home/dir1/

You may need to specify the authentication database:

mongodump --uri="mongodb+srv://<username>:<password>@<hostname>/?authSource=admin" --db=<dbname> --gzip --out=/home/dir1/

See Authentication failure while trying to save to mongodb

answered Mar 27 '23 at 12:07

Wernfried Domscheit

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Thank you for sharing, I just started exploring MongoDB, Can you please give me command using --host option with no --URI option. – Krishnakumar Mar 27 '23 at 13:52
How many times do you like me to repeat? You cannot use `mongodb+srv` with `--host` option - period. – Wernfried Domscheit Mar 27 '23 at 14:09

MongoDB not connecting while using host option?

2 Answers2