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From yogi nerella <ynerella...@gmail.com>
Subject Re: flume to collect log files from various sources
Date Thu, 24 Jan 2013 16:48:15 GMT
Hello Ramya,

Flume agent have to be installed on every host?
    I want to avoid this by integrating log4jappender into my app, and to
remove one additional overhead for administrators.
    Is this a problem?


Collecting data using "taildir" command?
   1.   If I have one flume agent sending log files from one host to
another agent who is listening.
    2.   How do I configure the receiving agent such that, it can separate
the log files again and write as it recieved.


Any sample configuration files for either 'taildir'  or 'multitail'
commands?

Issue with log4jappender:

I am evaluating log4jappender, and using this I am not able to send events
to the flume agent.

When I turn on debugging all the log messages I see are as follows.

Classpath:
C:\ServiceManager\workspace\mongodb\Mongodb\bin;C:\apache\apache-flume-1.3.1-bin\lib\avro-1.7.2.jar;C:\apache\apache-flume-1.3.1-bin\lib\avro-ipc-1.7.2.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-core-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-log4jappender-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-sdk-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\jackson-core-asl-1.9.3.jar;C:\apache\apache-flume-1.3.1-bin\lib\jackson-mapper-asl-1.9.3.jar;C:\apache\apache-flume-1.3.1-bin\lib\netty-3.4.0.Final.jar;C:\apache\apache-flume-1.3.1-bin\lib\slf4j-api-1.6.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\slf4j-log4j12-1.6.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\log4j-1.2.16.jar
14:27:29,600 DEBUG NettyAvroRpcClient:420 - Batch size string = 0
14:27:29,604  WARN NettyAvroRpcClient:426 - Invalid value for batchSize: 0;
Using default value.
14:27:29,649 DEBUG NettyTransceiver:195 - Using Netty bootstrap options:
{tcpNoDelay=true, connectTimeoutMillis=20000}
14:27:29,649 DEBUG NettyTransceiver:252 - Connecting to /16.90.218.66:44444
14:27:29,675 DEBUG NettyTransceiver:491 - [id: 0x01480773] OPEN
14:27:29,699 DEBUG NettyTransceiver:491 - [id: 0x01480773, /
15.80.67.94:61452 => /16.90.218.66:44444] BOUND: /15.80.67.94:61452
log4j:ERROR Flume append() failed.
14:27:29,940  INFO LogTest:13 - main started at Wed Jan 23 14:27:29 PST 2013
14:27:54,501 DEBUG NettyTransceiver:314 - Disconnecting from
16.90.218.66/16.90.218.66:44444
14:27:54,501 DEBUG NettyTransceiver:314 - Disconnecting from
16.90.218.66/16.90.218.66:44444
14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
16.90.218.66/16.90.218.66:44444
14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
16.90.218.66/16.90.218.66:44444
14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
16.90.218.66/16.90.218.66:44444


Yogi





On Wed, Jan 23, 2013 at 8:57 PM, Sri Ramya <ramya.1255@gmail.com> wrote:

> there is an error displayed on console Flume append() failed. Try to
> resolve .
> explain me what is your exact problem.
>
> Note:
> 1, Flume agent have to install in every host from where u want to collect
> data.
> 2, If u want to collect data from a directory then you have to to use
> 'taildir' command.
> 3, If u want to collect data from different files u have to use
> 'multitail' command.
>
> I think this info will be use full for u.
> thank you
>
>
>
> On Thu, Jan 24, 2013 at 4:06 AM, yogi nerella <ynerella999@gmail.com>wrote:
>
>> Hi,
>>
>> I am a new bee for flume, would like to get some feedback on if what I am
>> doing works correctly.
>>
>>
>> My application runs on multiple hosts, I want to collect all log files to
>> a central location.
>>
>> 1.  In My application I will ship all relevant log4jappender jar files,
>> and configure the agent's host, port information.
>>
>> 2. I will run a simple agent, and configure a source (avro), channel
>> (memory), and sink (file_roll).
>>
>> File_roll will write the events recieved via AVRO source and write them
>> to the corresponding file_roll sink.
>>
>> 3. Do I need one agent for each host, or is there a way I can configure
>> to write to multiple files, dynamically based on the real source the
>> message is getting recieved.
>>
>> 4. If I modify the configuration file, will the agent re-read the
>> information.   (Ex:  I want to add a new host, and collect the log files to
>> a new directory).
>>
>> 5.  In my simple test, messages sent from my app are getting lost, and I
>> see the following information in the console.
>>
>>
>> Classpath:
>> C:\ServiceManager\workspace\mongodb\Mongodb\bin;C:\apache\apache-flume-1.3.1-bin\lib\avro-1.7.2.jar;C:\apache\apache-flume-1.3.1-bin\lib\avro-ipc-1.7.2.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-core-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-log4jappender-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\flume-ng-sdk-1.3.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\jackson-core-asl-1.9.3.jar;C:\apache\apache-flume-1.3.1-bin\lib\jackson-mapper-asl-1.9.3.jar;C:\apache\apache-flume-1.3.1-bin\lib\netty-3.4.0.Final.jar;C:\apache\apache-flume-1.3.1-bin\lib\slf4j-api-1.6.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\slf4j-log4j12-1.6.1.jar;C:\apache\apache-flume-1.3.1-bin\lib\log4j-1.2.16.jar
>> 14:27:29,600 DEBUG NettyAvroRpcClient:420 - Batch size string = 0
>> 14:27:29,604  WARN NettyAvroRpcClient:426 - Invalid value for batchSize:
>> 0; Using default value.
>> 14:27:29,649 DEBUG NettyTransceiver:195 - Using Netty bootstrap options:
>> {tcpNoDelay=true, connectTimeoutMillis=20000}
>> 14:27:29,649 DEBUG NettyTransceiver:252 - Connecting to /
>> 16.90.218.66:44444
>> 14:27:29,675 DEBUG NettyTransceiver:491 - [id: 0x01480773] OPEN
>> 14:27:29,699 DEBUG NettyTransceiver:491 - [id: 0x01480773, /
>> 15.80.67.94:61452 => /16.90.218.66:44444] BOUND: /15.80.67.94:61452
>> log4j:ERROR Flume append() failed.
>> 14:27:29,940  INFO LogTest:13 - main started at Wed Jan 23 14:27:29 PST
>> 2013
>> 14:27:54,501 DEBUG NettyTransceiver:314 - Disconnecting from
>> 16.90.218.66/16.90.218.66:44444
>> 14:27:54,501 DEBUG NettyTransceiver:314 - Disconnecting from
>> 16.90.218.66/16.90.218.66:44444
>> 14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
>> 16.90.218.66/16.90.218.66:44444
>> 14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
>> 16.90.218.66/16.90.218.66:44444
>> 14:27:54,502 DEBUG NettyTransceiver:314 - Disconnecting from
>> 16.90.218.66/16.90.218.66:44444
>>
>>
>> Appreciate your help
>> Yogi
>>
>
>

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