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Update medalla-troubleshooting.md (#1705) 

add section addressing `address already in use error`. we already sort of cover this in the guide, but i think it makes sense to have it explicitly mentioned here.
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Sacha Saint-Leger 2020-09-21 15:21:36 +02:00 committed by GitHub
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docs/the_nimbus_book/src/medalla-troubleshooting.md
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@ -48,7 +48,6 @@ As it stands, logging seems to be slowing down the client, and quite a few user
make LOG_LEVEL=INFO medalla
```
### Low peer counts
If you're experiencing a low peer count, you may be behind a firewall. Try restarting your client and passing `NODE_PARAMS="--nat:\"extip:$EXT_IP_ADDRESS\""` as an option to `make medalla`, where `$EXT_IP_ADDRESS` is your real IP. For example, if your real IP address is `35.124.65.104`, you'd run:
@ -60,3 +59,22 @@ make NODE_PARAMS="--nat:\"extip:35.124.65.104\"" medalla
### Resource leaks
If you're experiencing RAM related resource leaks, try restarting your client (**we recommend restarting every 6 hours** until we get to the bottom of this issue). If you have a [local Grafana setup](https://github.com/status-im/nim-beacon-chain#getting-metrics-from-a-local-testnet-client), you can try monitoring the severity of these leaks and playing around with the restart interval.
### Address already in use error
If you're seeing an error that looks like:
```
Error: unhandled exception: (98) Address already in use [TransportOsError]
```
It's probably because you're running multiple validators -- and the default base port `9000` is already in use.
To change the base port, run:
```
make BASE_PORT=9100 medalla
```
(You can replace `9100` with a port of your choosing)