How to check the number of open connections from a particular server to my Redis server

Question

I have a shared Redis service and being used by multiple services. Because of a leak in one service, my Redis is crashing with too many open connections. 
How to check what is the service creating too many connections?

Karthik Divi · Accepted Answer

`CLIENT LIST` command shows all open connections currently on your Redis server. It outputs something like following

```sh
127.0.0.1:6379> CLIENT LIST
id=416 addr=127.0.0.1:55104 fd=10 name= age=15896 idle=10805 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=client
id=872 addr=127.0.0.1:56023 fd=8 name= age=10871 idle=41 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=llen
id=2327 addr=127.0.0.1:59204 fd=11 name= age=10 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=client
id=2328 addr=127.0.0.1:59205 fd=9 name= age=5 idle=5 flags=b db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=0 oll=0 omem=0 events=r cmd=blpop
127.0.0.1:6379> 
```

There you can see the total open connections and from which IPs they are being made, using that you can find the service which may be leaking connections.

How to check the number of open connections from a particular server to my Redis server

1 Answer