Errors with Logstash:

{:timestamp=>"2014-09-19T10:32:59.241000-0700", :message=>"Failed to flush outgoing items", :outgoing_count=>2917, :exception=>#<Errno::ECONNRESET: Connection reset by peer - Connection reset by peer>, :backtrace=>["org/jruby/RubyIO.java:3016:in `sysread'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/ftw-0.0.39/lib/ftw/connection.rb:243:in `read'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/ftw-0.0.39/lib/ftw/protocol.rb:30:in `read_http_message'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/ftw-0.0.39/lib/ftw/request.rb:93:in `execute'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/ftw-0.0.39/lib/ftw/agent.rb:325:in `execute'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/ftw-0.0.39/lib/ftw/agent.rb:217:in `post!'", "/opt/logstash/lib/logstash/outputs/elasticsearch/protocol.rb:106:in `bulk_ftw'", "/opt/logstash/lib/logstash/outputs/elasticsearch/protocol.rb:80:in `bulk'", "/opt/logstash/lib/logstash/outputs/elasticsearch.rb:315:in `flush'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.17/lib/stud/buffer.rb:219:in `buffer_flush'", "org/jruby/RubyHash.java:1339:in `each'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.17/lib/stud/buffer.rb:216:in `buffer_flush'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.17/lib/stud/buffer.rb:193:in `buffer_flush'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.17/lib/stud/buffer.rb:112:in `buffer_initialize'", "org/jruby/RubyKernel.java:1521:in `loop'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.17/lib/stud/buffer.rb:110:in `buffer_initialize'"], :level=>:warn}

Errors with Elasticsearch:

[2014-09-19 10:35:41,017][WARN ][http.netty               ] [Node1] Caught exception while handling client http traffic, closing connection [id: 0xbdf96db5, /10.12.11.181:35813 => /10.12.7.2:9200]
org.elasticsearch.common.netty.handler.codec.frame.TooLongFrameException: HTTP content length exceeded 104857600 bytes.
        at org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:169)
        at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
        at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)
        at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)
        at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)
        at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)
        at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
        at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
        at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268)
        at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255)
        at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
        at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)
        at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)
        at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
        at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
        at org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
        at org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:722)

Errors with Redis-broker:

2356] 18 Sep 18:06:43 * 1 changes in 900 seconds. Saving...
[2356] 18 Sep 18:06:43 # Can't save in background: fork: Cannot allocate memory
[2356] 18 Sep 18:06:43 * 1 changes in 900 seconds. Saving...

Info:

redis_version:2.4.10
redis_git_sha1:00000000
redis_git_dirty:0
arch_bits:64
multiplexing_api:epoll
gcc_version:4.4.6
process_id:7789
uptime_in_seconds:278
uptime_in_days:0
lru_clock:605688
used_cpu_sys:101.94
used_cpu_user:25.32
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
connected_clients:5
connected_slaves:0
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
used_memory:5654420480
used_memory_human:5.27G
used_memory_rss:2964369408
used_memory_peak:5654392976
used_memory_peak_human:5.27G
mem_fragmentation_ratio:0.52
mem_allocator:jemalloc-2.2.5
loading:0
aof_enabled:0
changes_since_last_save:163070
bgsave_in_progress:0
last_save_time:1411148450
bgrewriteaof_in_progress:0
total_connections_received:49
total_commands_processed:163074
expired_keys:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:3995
vm_enabled:0
role:master
db0:keys=1,expires=0