MongoDB sharding on Windows using Docker containers

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We have a large MongoDB collection ( around 60 million documents ). We tried to shard the collection but got an error when tried to add a shard to the mongos.

The error message is "Failed to refresh the balancer settings:: caused by :: Could not find host matching read preference { mode: "nearest"} for set cfgrs"

"cfgrs" is the config server

We have 4 shards. shard 1, config servers and monogs (router) is on the main PC ( DESKTOP-4KCIA3T). We can add shard 1 without any problem but the error occurs when we try to add other shards from different PC.

### Shards for `pages` collection

### Config Server

PC name: `DESKTOP-4KCIA3T`

Disk Type: `SSD`

Containers: `[cfgsvr1]`

Replicas: `[cfgrs]`

PORTS: `[40001]`

IP: `[....]`

#### Shard 1

PC name: `DESKTOP-4KCIA3T`

Disk Type: `SSD`

Containers: `[shard1svr1]`

Replicas: `[shard1rs]`

PORTS: `[50001]`

IP: `[....]`

#### Shard 2

PC name: `NEWDATAPC 7`

Disk Type: `SSD`

Containers: `[shard2svr1]`

Replicas: `[shard2rs]`

PORTS: `[50001]`

IP: `[.....]`

#### Shard 3

PC name: `NEWDATAPC 6`

Disk Type: `SSD`

Containers: `[shard3svr1]`

Replicas: `[shard3rs]`

PORTS: `[50001]`

IP: `[.....]`

#### Shard 4

PC name: `Post-Match-Main`

Disk Type: `SSD`

Containers: `[shard4svr1]`

Replicas: `[shard4rs]`

PORTS: `[50001]`

IP: `[.....]`

If you have any idea what we are doing wrong please let us know. Let us know if you have any questions.

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