# pmm2 for sharded mongodb
**URL:** https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118
**Category:** PMM 2.x
**Tags:** pmm, mongodb
**Created:** [October 8, 2020, 7:23pm UTC](https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118 "2020-10-08T19:23:47Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@arash\_moosavi](https://forums.percona.com/u/arash_moosavi)
#### Post date: [October 8, 2020, 7:23pm UTC](https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118/1 "2020-10-08T19:23:47Z")
Hi,
I have installed PMM 2.10.1 and Configured cluster of MongoDB 4.4.0 with this structure:
Server1:
mongo-router-01:27017
mongo-config-01:27021
mongo-shard-01-node-a:27018
mongo-shard-01-node-b:27019
mongo-shard-01-node-c:27020
Server2:
mongo-router-02:27017
mongo-config-02:27021
mongo-shard-02-node-a:27018
mongo-shard-02-node-b:27019
mongo-shard-02-node-c:27020
Server3:
mongo-router-03:27017
mongo-config-03:27021
mongo-shard-03-node-a:27018
mongo-shard-03-node-b:27019
mongo-shard-03-node-c:27020
I just added mongo-router-01:27017 to pmm-admin with following command and it is OK:
sudo pmm-admin add mongodb --cluster someMongoCluster --username=mongodb\_exporter --password=SomeStrongPassword
But when I try to add mongo-shard-01-node-a with the following command:
sudo pmm-admin add mongodb --cluster someMongoCluster --replication-set=mongo-shard-01 --username=mongodb\_exporter --password=SomeStrongPassword mongo-shard-01-node-a mongo-shard-01-node-a:27018
Following Error has occurred:
Connection check failed: connection() : auth error: sasl conversation error: unable to authenticate using mechanism “SCRAM-SHA-1”: (AuthenticationFailed) Authentication failed…
l am sure username and password are correct.
What is the problem?
Why Percona has not provide an straightforward get start about fully implementation of PMM 2 for Secured Clustered MongoDB?
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### Author:  [@Vadim\_Yalovets](https://forums.percona.com/u/Vadim_Yalovets)
#### Post date: [October 9, 2020, 2:51am UTC](https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118/2 "2020-10-09T02:51:25Z")
Hi Arash,
Could you try the same command but setting the password between single quotes?
… --password=‘SomeStrongPassword’ …
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### Author:  [@arash\_moosavi](https://forums.percona.com/u/arash_moosavi)
#### Post date: [October 9, 2020, 2:57am UTC](https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118/3 "2020-10-09T02:57:06Z")
I tried it, it doesn’t worked.
I don’t have space and any special character in my password. [a-zA-Z0-9]
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### Author:  [@Vadim\_Yalovets](https://forums.percona.com/u/Vadim_Yalovets)
#### Post date: [October 9, 2020, 5:18am UTC](https://forums.percona.com/t/pmm2-for-sharded-mongodb/8118/4 "2020-10-09T05:18:58Z")
Are you able connect to the mongod instance by using user mongodb\_exporter?
mongo -u mongodb\_exporter -p ‘s3cR#tpa$$worD’ --port=27018 --host=mongo-shard-01-node-a
