Redis::CommandError: ERR max number of clients reached

[stabenfeldt]

I get this exception when I do Retry all.
I've searched for concurrency but could not find any information on how to get Resque to reduce the number of connections.
Is there a way I can tell Resque to only make 1 connection to the redis-server?
I only got 1 worker running.

Best,
Martin

[yaauie]

Please report relevant version numbers when asking for help.

Resque doesn't do any connection pooling; it transparently uses a single redis connection via the redis gem.

Also, what is the value of the maxclients config on your redis instance? You can get this using the command-line client like so:

$ redis-cli -h your.redis.host.address -p 6379 config get maxclients
1) "maxclients"
2) "10000"

or in irb like so:

Redis.new(host: 'your.redis.host.address', port: 6379).config(:get, :maxclients)
# => {"maxclients"=>"10000"}

[stabenfeldt]

I don't know why, but the redis server had several connections from 'dead' workers.
I fixed the problem by connecting to the redis server with redis-cli and killed all the clients there.

$ redis-cli 
> CLIENT LIST
> CLIENT KILL nn.nn.nn.nn:nnnnn

[coldfire-x]

this works for me

`$ redis-cli

CLIENT LIST
CLIENT KILL nn.nn.nn.nn:nnnnn`