# Problems with Redis input

**URL:** <https://discuss.elastic.co/t/problems-with-redis-input/98537>\
**Category:** Logstash\
**Created:** [August 28, 2017, 10:22am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537 "2017-08-28T10:22:15Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![truongdqse03303](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truongdqse03303/32/22605_2.png) [@truongdqse03303](https://discuss.elastic.co/u/truongdqse03303)\
**Post date:** [August 28, 2017, 10:22am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/1 "2017-08-28T10:22:15Z")

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Hi experts  
I have config to use Redis input for logstash. Here is my input logstash

```
input {
  redis {
    host => " ***.***. **.***"
    type => "redis-input"
    data_type => "list"
    key => "filebeat"
  }
}

```

Whenever i stop logstash, i can push data in Redis but when i start logstash i cant do anything Redis database which told Logstash to use.  
Here is my logstash log. It's seem very normal. I dont know where im wrong.  
Please help me  
Thanks

```
[2017-08-28T17:13:11,644][INFO][logstash.outputs.elasticsearch] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http:// ***.***. **.*** :9200/]}}
[2017-08-28T17:13:11,652][INFO][logstash.outputs.elasticsearch] Running health check to see if an Elasticsearch connection is working {:healthcheck_url=>http:// ***.***. **.*** :9200/, :path=>"/"}
[2017-08-28T17:13:11,826][WARN][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>"http:// ***.***. **.*** :9200/"}
[2017-08-28T17:13:11,860][INFO][logstash.outputs.elasticsearch] New Elasticsearch output {:class=>"LogStash::Outputs::ElasticSearch", :hosts=>["// ***.***. **.*** :9200"]}
[2017-08-28T17:13:11,935][INFO][logstash.pipeline] Starting pipeline {"id"=>"main", "pipeline.workers"=>1, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>5, "pipeline.max_inflight"=>125}
[2017-08-28T17:13:11,972][INFO][logstash.inputs.redis] Registering Redis {:identity=>"redis://@ ***.***. **.*** :6379/0 list:filebeat"}
[2017-08-28T17:13:11,973][INFO][logstash.pipeline] Pipeline main started
[2017-08-28T17:13:12,072][INFO][logstash.agent] Successfully started Logstash API endpoint {:port=>9600}
```

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [August 28, 2017, 10:55am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/2 "2017-08-28T10:55:17Z")

</div>

> when i start logstash i cant do anything Redis database which told Logstash to use.

What, exactly, do you mean by this?

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<div class="post-metadata">

**Author:** ![truongdqse03303](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truongdqse03303/32/22605_2.png) [@truongdqse03303](https://discuss.elastic.co/u/truongdqse03303)\
**Post date:** [August 28, 2017, 11:28am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/3 "2017-08-28T11:28:14Z")

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Hi @magnusbaeck  
Thank for reply  
i use filebeat to send log to Redis. It's work. Running well but when i start logstash to collect the data of Redis that filebeat sent before, i cant access the Redis db0 anymore, i use RedisDesktopManager and the data of db0 Redis gone, cant push anydata into db0.  
I create my own API to send Redis data and it's also cant push into db0.  
I try to find the solution but when i stop logstash it's running normal again. That's what i mean.  
I dont know where the problem is ☹

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [August 28, 2017, 2:02pm UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/4 "2017-08-28T14:02:34Z")

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> i cant access the Redis db0 anymore, i use RedisDesktopManager and the data of db0 Redis gone, cant push anydata into db0.  
> I create my own API to send Redis data and it’s also cant push into db0.

Why not? What happens? Any error message?

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<div class="post-metadata">

**Author:** ![truongdqse03303](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truongdqse03303/32/22605_2.png) [@truongdqse03303](https://discuss.elastic.co/u/truongdqse03303)\
**Post date:** [August 29, 2017, 2:20am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/5 "2017-08-29T02:20:49Z")

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Hi @magnusbaeck  
I dont know why, here is redis log after i turn on logstash and the Redis db start to no data i/o

```
2230:M 29 Aug 09:09:11.043 * 10 changes in 300 seconds. Saving...
2230:M 29 Aug 09:09:11.043 * Background saving started by pid 2277
2277:C 29 Aug 09:09:11.047 * DB saved on disk
2277:C 29 Aug 09:09:11.048 * RDB: 0 MB of memory used by copy-on-write
2230:M 29 Aug 09:09:11.144 * Background saving terminated with success

```

After some stop + add new data + start logstash to check the log, i found that line

> [2017-08-29T09:04:09,800][WARN][logstash.inputs.redis] Redis connection problem {:exception=\>#\<Redis::CannotConnectError: Error connecting to Redis on _ **.** _. **.** \*:6379 (Errno::ECONNREFUSED)\>}

but only 1 line for 3 times restart, these other is the same with logstash log that i posted.

Here is full redis log for 3 times restart

```
932:M 29 Aug 09:04:10.391 # User requested shutdown...
932:M 29 Aug 09:04:10.392 * Saving the final RDB snapshot before exiting.
932:M 29 Aug 09:04:10.398 * DB saved on disk
932:M 29 Aug 09:04:10.398 * Removing the pid file.
932:M 29 Aug 09:04:10.399 # Redis is now ready to exit, bye bye...
2230:M 29 Aug 09:04:10.422 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
2230:M 29 Aug 09:04:10.422 # Server started, Redis version 3.2.3
2230:M 29 Aug 09:04:10.423 * DB loaded from disk: 0.000 seconds
2230:M 29 Aug 09:04:10.423 * The server is now ready to accept connections on port 6379
2230:M 29 Aug 09:09:11.043 * 10 changes in 300 seconds. Saving...
2230:M 29 Aug 09:09:11.043 * Background saving started by pid 2277
2277:C 29 Aug 09:09:11.047 * DB saved on disk
2277:C 29 Aug 09:09:11.048 * RDB: 0 MB of memory used by copy-on-write
2230:M 29 Aug 09:09:11.144 * Background saving terminated with success
2230:M 29 Aug 09:14:31.035 * 10 changes in 300 seconds. Saving...
2230:M 29 Aug 09:14:31.035 * Background saving started by pid 2301
2301:C 29 Aug 09:14:31.038 * DB saved on disk
2301:C 29 Aug 09:14:31.039 * RDB: 0 MB of memory used by copy-on-write
2230:M 29 Aug 09:14:31.136 * Background saving terminated with success

```

Any idea or familiar error to this?  
Thanks  
`

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<div class="post-metadata">

**Author:** ![truongdqse03303](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/truongdqse03303/32/22605_2.png) [@truongdqse03303](https://discuss.elastic.co/u/truongdqse03303)\
**Post date:** [August 29, 2017, 4:45am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/6 "2017-08-29T04:45:26Z")

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Hi @magnusbaeck  
I change the index so i found my data already on ES  
Logstash take all data of Redis and flush the db, is it right?  
Now whenever i send data into Redi, logstash immediately take it into ES and no data in Redis. WOW

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 26, 2017, 4:45am UTC](https://discuss.elastic.co/t/problems-with-redis-input/98537/7 "2017-09-26T04:45:26Z")

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