Hello Andrew,

I have applied IPv4 setting on both ignite instance, now seeing following
warning in the logs -

[20:51:17,791][WARN
][disco-event-worker-#52%WebGrid%][GridDiscoveryManager] Local node's value
of 'java.net.preferIPv4Stack' system property differs from remote node's
(all nodes in topology should have identical value) [locPreferIpV4=true,
rmtPreferIpV4=null, locId8=1404bc51, rmtId8=4924c585,
rmtAddrs=[Remote_host_name/0:0:0:0:0:0:0:1%lo, /127.0.0.1, /REMOTE_Host_IP]]
[20:51:35,986][WARN
][disco-event-worker-#52%WebGrid%][GridDiscoveryManager] Local node's value
of 'java.net.preferIPv4Stack' system property differs from remote node's
(all nodes in topology should have identical value) [locPreferIpV4=true,
rmtPreferIpV4=null, locId8=1404bc51, rmtId8=b8f3fa13,
rmtAddrs=[remote_host_name/0:0:0:0:0:0:0:1%lo, /127.0.0.1, /REMOTE_Host_IP]]

so now wondering what this error log suggests ?

Thanks,
Rishi

On Tue, Apr 18, 2017 at 4:36 PM, ignite_user2016 <[email protected]>
wrote:

> Thanks, Andrew.
>
> I enabled the ipv4 stack option and see if that resolves our problem.
>
> I will keep you posted, thank you for all your help.
>
>
> On Tue, Apr 18, 2017 at 1:41 PM, Andrew Mashenkov [via Apache Ignite
> Users] <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=12049&i=0>> wrote:
>
>> Hi Rishi,
>>
>> Would you please check if both nodes has same either
>> java.net.preferIPv4Stack=true or java.net.preferIPv6Stack=true option?
>> "remote_host/remote_host:47102" looks weird. Would you also check if all
>> dns names are correctly resolved on both nodes?
>>
>> On Tue, Apr 18, 2017 at 9:29 PM, Rishi Yagnik <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=12044&i=0>> wrote:
>>
>>> I checked the port and all ports are open between 2 ignite instances.
>>>
>>> There is something more going on, will provide the log soon.
>>>
>>> On Tue, Apr 18, 2017 at 12:00 PM, ignite_user2016 <[hidden email]
>>> <http:///user/SendEmail.jtp?type=node&node=12044&i=1>> wrote:
>>>
>>>> we use Ignite 1.7, yes application is communicating between hosts and
>>>> client application.
>>>>
>>>> I will provide the logs soon.
>>>>
>>>> Thanks,
>>>>
>>>> On Tue, Apr 18, 2017 at 11:09 AM, Evgenii Zhuravlev [via Apache Ignite
>>>> Users] <[hidden email]
>>>> <http:///user/SendEmail.jtp?type=node&node=12042&i=0>> wrote:
>>>>
>>>>> Which version of ignite do you use?
>>>>>
>>>>> It looks like nodes discovered each other via 47500+ ports, but they
>>>>> can't communicate through 47100+ ports. Did you opened these ports? Are 
>>>>> you
>>>>> sure that all nodes was used in your application?
>>>>>
>>>>> Also, it would be helpful if you provided full logs, it's nearly
>>>>> impossible to understand what really happens on the nodes without them.
>>>>>
>>>>> 2017-04-18 18:39 GMT+03:00 ignite_user2016 <[hidden email]
>>>>> <http:///user/SendEmail.jtp?type=node&node=12038&i=0>>:
>>>>>
>>>>>> Yes, I see this logs in both the host.
>>>>>>
>>>>>> The log entries I have provided, here is my config file -
>>>>>>
>>>>>> <beans xmlns="http://www.springframework.org/schema/beans";
>>>>>>        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>>>>>>        xmlns:util="http://www.springframework.org/schema/util";
>>>>>>        xsi:schemaLocation="
>>>>>>         http://www.springframework.org/schema/beans
>>>>>>         http://www.springframework.org/schema/beans/spring-beans.xsd
>>>>>>         http://www.springframework.org/schema/util
>>>>>>         http://www.springframework.org/schema/util/spring-util.xsd";>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>     <bean id="ignite.cfg" class="org.apache.ignite.confi
>>>>>> guration.IgniteConfiguration">
>>>>>>
>>>>>>         <property name="gridName" value="WebGrid"/>
>>>>>>
>>>>>>         <!-- Set to true to enable distributed class loading for
>>>>>> examples, default is false. -->
>>>>>>         <property name="peerClassLoadingEnabled" value="true"/>
>>>>>>         <!-- Enable client mode. -->
>>>>>>         <property name="clientMode" value="false"/>
>>>>>>
>>>>>>         <property name="gridLogger">
>>>>>>             <bean class="org.apache.ignite.logger.jcl.JclLogger">
>>>>>>                 <constructor-arg type="org.apache.commons.loggi
>>>>>> ng.Log">
>>>>>>                     <bean class="org.apache.commons.logg
>>>>>> ing.impl.Log4JLogger">
>>>>>>                         <constructor-arg type="java.lang.String"
>>>>>> value="config/log4j.xml"/>
>>>>>>                     </bean>
>>>>>>                 </constructor-arg>
>>>>>>             </bean>
>>>>>>         </property>
>>>>>>
>>>>>>         <!-- Enable task execution events for examples. -->
>>>>>>         <property name="includeEventTypes">
>>>>>>             <list>
>>>>>>                 <util:constant static-field="org.apache.ignit
>>>>>> e.events.EventType.EVT_CLIENT_NODE_RECONNECTED"/>
>>>>>>             </list>
>>>>>>         </property>
>>>>>>
>>>>>>
>>>>>>
>>>>>>         <property name="cacheConfiguration">
>>>>>>             <list>
>>>>>>                 <!-- Partitioned cache example configuration (Atomic
>>>>>> mode). -->
>>>>>>                 <bean class="org.apache.ignite.confi
>>>>>> guration.CacheConfiguration">
>>>>>>                     <property name="name" value="session-cache"/>
>>>>>>                     <!-- Cache mode. -->
>>>>>>                     <property name="cacheMode" value="REPLICATED"/>
>>>>>>                     <property name="atomicityMode" value="ATOMIC"/>
>>>>>>                     <property name="backups" value="0"/>
>>>>>>                     <property name="startSize" value="#{100 * 1024 *
>>>>>> 1024}"/>
>>>>>>                 </bean>
>>>>>>             </list>
>>>>>>         </property>
>>>>>>
>>>>>>
>>>>>>
>>>>>>         <property name="discoverySpi">
>>>>>>             <bean class="org.apache.ignite.spi.d
>>>>>> iscovery.tcp.TcpDiscoverySpi">
>>>>>>                 <property name="ipFinder">
>>>>>>                     <!--
>>>>>>                         Ignite provides several options for automatic
>>>>>> discovery that can be used
>>>>>>                         instead os static IP based discovery. For
>>>>>> information on all options refer
>>>>>>                         to our documentation:
>>>>>> http://apacheignite.readme.io/docs/cluster-config
>>>>>>                     -->
>>>>>>                     <!-- Uncomment static IP finder to enable
>>>>>> static-based discovery of initial nodes. -->
>>>>>>                     <bean class="org.apache.ignite.spi.d
>>>>>> iscovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
>>>>>>                         <!--<bean class="org.apache.ignite.spi.d
>>>>>> iscovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">-->
>>>>>>                         <property name="addresses">
>>>>>>                             <list>
>>>>>>                                 <!-- In distributed environment,
>>>>>> replace with actual host IP address. -->
>>>>>>                                 <value>HOST_IP1:47500..47509</value>
>>>>>>                                 <value>HOST_IP2:47500..47509</value>
>>>>>>                             </list>
>>>>>>                         </property>
>>>>>>                     </bean>
>>>>>>                 </property>
>>>>>>             </bean>
>>>>>>         </property>
>>>>>>
>>>>>>     </bean>
>>>>>> </beans>
>>>>>>
>>>>>> On Tue, Apr 18, 2017 at 5:46 AM, Evgenii Zhuravlev [via Apache Ignite
>>>>>> Users] <[hidden email]
>>>>>> <http:///user/SendEmail.jtp?type=node&node=12037&i=0>> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> Could you check that destination node accessible from current node
>>>>>>> via one of this addresses(remote_host/remote_host:47102,
>>>>>>> /0:0:0:0:0:0:0:1%lo:47102, /127.0.0.1:47102?)
>>>>>>>
>>>>>>> Do you have problems only with one node, or you have same messages
>>>>>>> about another nodes and on another nodes?
>>>>>>>
>>>>>>> Please provide logs from another nodes and your config file.
>>>>>>>
>>>>>>> 2017-04-17 23:00 GMT+03:00 ignite_user2016 <[hidden email]
>>>>>>> <http:///user/SendEmail.jtp?type=node&node=12025&i=0>>:
>>>>>>>
>>>>>>>> I see the frequent disconnect errors in the logs -
>>>>>>>>
>>>>>>>> [10:34:03,028][WARN ][tcp-comm-worker-#1%WebGrid%]
>>>>>>>> [TcpCommunicationSpi]
>>>>>>>> Failed to connect to a remote node (make sure that destination node
>>>>>>>> is alive
>>>>>>>> and operating system firewall is disabled on local and remote hosts)
>>>>>>>> [addrs=[remote_host/remote_host:47102, /0:0:0:0:0:0:0:1%lo:47102,
>>>>>>>> /127.0.0.1:47102]]
>>>>>>>> [11:58:06,634][WARN ][grid-nio-worker-2-#42%WebGri
>>>>>>>> d%][TcpCommunicationSpi]
>>>>>>>> Communication SPI Session write timed out (consider increasing
>>>>>>>> 'socketWriteTimeout' configuration property)
>>>>>>>> [remoteAddr=/remote_host_ip:38104, writeTimeout=2000]
>>>>>>>> [12:04:04,124][WARN ][tcp-comm-worker-#1%WebGrid%]
>>>>>>>> [TcpCommunicationSpi]
>>>>>>>> Connect timed out (consider increasing 'failureDetectionTimeout'
>>>>>>>> configuration property) [addr=/0:0:0:0:0:0:0:1%lo:47102,
>>>>>>>> failureDetectionTimeout=10000]
>>>>>>>> [12:04:04,124][WARN ][tcp-comm-worker-#1%WebGrid%]
>>>>>>>> [TcpCommunicationSpi]
>>>>>>>> Connect timed out (consider increasing 'failureDetectionTimeout'
>>>>>>>> configuration property) [addr=/127.0.0.1:47102,
>>>>>>>> failureDetectionTimeout=10000]
>>>>>>>> [12:04:04,124][WARN ][tcp-comm-worker-#1%WebGrid%]
>>>>>>>> [TcpCommunicationSpi]
>>>>>>>> Failed to connect to a remote node (make sure that destination node
>>>>>>>> is alive
>>>>>>>> and operating system firewall is disabled on local and remote hosts)
>>>>>>>> [addrs=[remote_host/remote_host:47102, /0:0:0:0:0:0:0:1%lo:47102,
>>>>>>>> /127.0.0.1:47102]]
>>>>>>>>
>>>>>>>> With this errors in the logs, I see our system is operational and
>>>>>>>> does not
>>>>>>>> have any failures so are these errors showing false alarms ?
>>>>>>>>
>>>>>>>>
>>>>>>>> I am wondering what would be the idle value for socketWriteTimeOut
>>>>>>>> and
>>>>>>>> failureDetectionCount ? would it have any performance impact on it ?
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Rishi
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> View this message in context: http://apache-ignite-users.705
>>>>>>>> 18.x6.nabble.com/Ignite-errors-in-log-tp12007.html
>>>>>>>> Sent from the Apache Ignite Users mailing list archive at
>>>>>>>> Nabble.com.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------
>>>>>>> If you reply to this email, your message will be added to the
>>>>>>> discussion below:
>>>>>>> http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors
>>>>>>> -in-log-tp12007p12025.html
>>>>>>> To start a new topic under Apache Ignite Users, email [hidden email]
>>>>>>> <http:///user/SendEmail.jtp?type=node&node=12037&i=1>
>>>>>>> To unsubscribe from Apache Ignite Users, click here.
>>>>>>> NAML
>>>>>>> <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Rishi Yagnik
>>>>>>
>>>>>> ------------------------------
>>>>>> View this message in context: Re: Ignite errors in log
>>>>>> <http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors-in-log-tp12007p12037.html>
>>>>>>
>>>>>> Sent from the Apache Ignite Users mailing list archive
>>>>>> <http://apache-ignite-users.70518.x6.nabble.com/> at Nabble.com.
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------
>>>>> If you reply to this email, your message will be added to the
>>>>> discussion below:
>>>>> http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors
>>>>> -in-log-tp12007p12038.html
>>>>> To start a new topic under Apache Ignite Users, email [hidden email]
>>>>> <http:///user/SendEmail.jtp?type=node&node=12042&i=1>
>>>>> To unsubscribe from Apache Ignite Users, click here.
>>>>> NAML
>>>>> <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Rishi Yagnik
>>>>
>>>> ------------------------------
>>>> View this message in context: Re: Ignite errors in log
>>>> <http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors-in-log-tp12007p12042.html>
>>>> Sent from the Apache Ignite Users mailing list archive
>>>> <http://apache-ignite-users.70518.x6.nabble.com/> at Nabble.com.
>>>>
>>>
>>>
>>>
>>> --
>>> Rishi Yagnik
>>>
>>
>>
>>
>> --
>> Best regards,
>> Andrey V. Mashenkov
>> Regards, Andrew.
>>
>>
>> ------------------------------
>> If you reply to this email, your message will be added to the discussion
>> below:
>> http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors
>> -in-log-tp12007p12044.html
>> To start a new topic under Apache Ignite Users, email [hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=12049&i=1>
>> To unsubscribe from Apache Ignite Users, click here.
>> NAML
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>>
>
>
>
> --
> Rishi Yagnik
>
> ------------------------------
> View this message in context: Re: Ignite errors in log
> <http://apache-ignite-users.70518.x6.nabble.com/Ignite-errors-in-log-tp12007p12049.html>
> Sent from the Apache Ignite Users mailing list archive
> <http://apache-ignite-users.70518.x6.nabble.com/> at Nabble.com.
>



-- 
Rishi Yagnik

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