Let me explain sequentially.
>
> I’ve four nodes in cluster; node1, node2 (seed), node3, node4.
>
> 1. Reinstalling 32-Bit Ubuntu problem didn’t solve the problem.
> After explicitly enabling port 9160 by ufw command (Uncomplicated
FireWall in Ubuntu), node3 joined the ring though no firewall was set among
them.
>
> Why only node3 required the modification while other three three nodes
were already joined the ring without that?
>
> 2. Now opscenter (http://node2:8888/opscenter/index.html) is detecting
all nodes in cluster though agent wasn’t getting installed with error
"Unable to find a java executable! Please install java or set JAVA_HOME.
Exit code: 4", I’m sudoing to install agents.
>
> Then I enabled port 61620, 61621 & agent got installed in node3 but not
in other nodes, please refer opscenter list view below.
>
> DATACENTER HOSTNAME TOKEN
STATUS LOAD (CPU) DATA SIZE
>
> datacenter1 node1
-7564491331177403445 Active -
>
> datacenter1 node2 0
Active -
>
> datacenter1 node4
-5882736283116946676 Active -
>
> datacenter1 node4
5596871268197106065 Active 0
7.1 MB
>
> Why opscenter agent installed only in node3 & not in other nodes from
opscenter GUI?
>
> DETAILS REQUESTED
>
>
>
> Node1
>
> Node3
>
> echo $JAVA_HOME
>
> /app/jdk1.6.0_16
>
> /app/jdk1.6.0_16
>
> echo $PATH
>
>
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/app/jdk1.6.0_16/bin
>
>
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/app/jdk1.6.0_16/bin
>
> which java
>
> /app/jdk1.6.0_16/bin/java
>
> /app/jdk1.6.0_16/bin/java
>
> java -version
>
> java version "1.6.0_16"
> Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
> Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode)
>
> java version "1.6.0_16"
> Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
> Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode)
>
> whoami (as there are diff sudo users from different nodes, I'm trying to
install agents one by one in each nodes)
>
> node1
>
> node3
>
> ps aux | grep cassandra
>
> apacas 17440 4.3 30.1 1377336 1196792 ? Sl Mar19 1868:18
/app/jdk1.6.0_16/bin/java -ea -javaagent:./../lib/jamm-0.2.5.jar
-XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms1024M -Xmx1024M
-Xmn200M -XX:+HeapDumpOnOutOfMemoryError -Xss180k -XX:+UseParNewGC
-XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8
-XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75
-XX:+UseCMSInitiatingOccupancyOnly -XX:+UseTLAB
-Djava.net.preferIPv4Stack=true -Dcom.sun.management.jmxremote.port=7199
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
-Dlog4j.configuration=log4j-server.properties
-Dlog4j.defaultInitOverride=true -cp
./../conf:./../build/classes/main:./../build/classes/thrift:./../lib/antlr-3.2.jar:./../lib/apache-cassandra-1.2.8.jar:./../lib/apache
cassandra-clientutil-1.2.8.jar:./../lib/apache-cassandra-thrift-1.2.8.jar:./../lib/avro-1.4.0-fixes.jar:./../lib/avro-1.4.0-sources-fixes.jar:./../lib/commons-cli-1.1.jar:./../lib/commons-codec-1.2.jar:./../lib/commons-lang-2.6.jar:./../lib/compress-lzf-0.8.4.jar:./../lib/concurrentlinkedhashmap-lru-1.3.jar:./../lib/guava-13.0.1.jar:./../lib/high-scale-lib-1.1.2.jar:./../lib/jackson-core-asl-1.9.2.jar:./../lib/jackson-mapper-asl-1.9.2.jar:./../lib/jamm-0.2.5.jar:./../lib/jbcrypt-0.3m.jar:./../lib/jline-1.0.jar:./../lib/json-simple-1.1.jar:./../lib/libthrift-0.7.0.jar:./../lib/log4j-1.2.16.jar:./../lib/lz4-1.1.0.jar:./../lib/metrics-core-2.0.3.jar:./../lib/netty-3.5.9.Final.jar:./../lib/servlet-api-2.5-20081211.jar:./../lib/slf4j-api-1.7.2.jar:./../lib/slf4j-log4j12-1.7.2.jar:./../lib/snakeyaml-1.6.jar:./../lib/snappy-java-1.0.5.jar:./../lib/snaptree-0.1.jar
org.apache.cassandra.service.CassandraDaemon
>
> apacas 22642 1.5 25.4 1390740 1008932 ? Sl Apr15 66:28
/app/jdk1.6.0_16/bin/java -ea -javaagent:./../lib/jamm-0.2.5.jar
-XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms1024M -Xmx1024M
-Xmn200M -XX:+HeapDumpOnOutOfMemoryError -Xss180k -XX:+UseParNewGC
-XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8
-XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75
-XX:+UseCMSInitiatingOccupancyOnly -XX:+UseTLAB
-Djava.net.preferIPv4Stack=true -Dcom.sun.management.jmxremote.port=7199
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
-Dlog4j.configuration=log4j-server.properties
-Dlog4j.defaultInitOverride=true -cp
./../conf:./../build/classes/main:./../build/classes/thrift:./../lib/antlr-3.2.jar:./../lib/apache-cassandra-1.2.8.jar:./../lib/apache-cassandra-clientutil-1.2.8.jar:./../lib/apache-cassandra-thrift-1.2.8.jar:./../lib/avro-1.4.0-fixes.jar:./../lib/avro-1.4.0-sources-fixes.jar:./../lib/commons-cli-1.1.jar:./../lib/commons-codec-1.2.jar:./../lib/commons-lang-2.6.jar:./../lib/compress-lzf-0.8.4.jar:./../lib/concurrentlinkedhashmap-lru-1.3.jar:./../lib/guava-13.0.1.jar:./../lib/high-scale-lib-1.1.2.jar:./../lib/jackson-core-asl-1.9.2.jar:./../lib/jackson-mapper-asl-1.9.2.jar:./../lib/jamm-0.2.5.jar:./../lib/jbcrypt-0.3m.jar:./../lib/jline-1.0.jar:./../lib/json-simple-1.1.jar:./../lib/libthrift-0.7.0.jar:./../lib/log4j-1.2.16.jar:./../lib/lz4-1.1.0.jar:./../lib/metrics-core-2.0.3.jar:./../lib/netty-3.5.9.Final.jar:./../lib/servlet-api-2.5-20081211.jar:./../lib/slf4j-api-1.7.2.jar:./../lib/slf4j-log4j12-1.7.2.jar:./../lib/snakeyaml-1.6.jar:./../lib/snappy-java-1.0.5.jar:./../lib/snaptree-0.1.jar
-Dcassandra.join_ring=true org.apache.cassandra.service.CassandraDaemon
>
>
>
> 1) how do you start Cassandra on the first 3 nodes? – using
/app/apache/cassandra/apache-cassandra-1.2.8/bin/cassandra script
>
>
>
> 2) how do you start it on the 4th node? - using
/app/apache/cassandra/apache-cassandra-1.2.8/bin/cassandra script
>
>
>
> 3) how did you start opscenter? – using
/app/apache/cassandra/opscenter-4.1.1/bin/opscenter script.
>
> ---------- Forwarded message ----------
> From: "Adrian Rodriguez" <ogl...@gmail.com>
> Date: Apr 18, 2014 11:50 AM
> Subject: Re: Apache cassandra not joining cluster ring
> To: <user@cassandra.apache.org>
> Cc: <user@cassandra.apache.org>
>
> If I were you, I would make sure all nodes were the same. The 32 / 64
thing might not be an issue, but you probably don't want that on a
production cluster. What would help is if your pasted the output of all
nodes for these commands:
>
>
>
> 1) echo $JAVA_HOME
>
> 2) echo $PATH
>
> 3) which java
>
> 4) java -version
>
> 5) whoami
>
> 6) ps aux | grep cassandra
>
>
>
> And if you could answer these questions:
>
>
>
> 1) how do you start Cassandra on the first 3 nodes?
>
>
>
> 2) how do you start it on the 4th node?
>
>
>
> 3) how did you start opscenter?
>
>
>
> I'm also a bit confused as to what your current problem is. Are you
having trouble installing the opscener agents from the opscener ui?
>
> —
> Sent from Mailbox for iPhone
>>
>> On Thu, Apr 17, 2014 at 9:20 PM, Joyabrata Das <
joy.luv.challen...@gmail.com> wrote:
>>>
>>> Could someone please help!
>>>
>>> On Apr 17, 2014 10:55 AM, "Joyabrata Das" <joy.luv.challen...@gmail.com>
wrote:
>>>
>>> After explicitly enabling port
>>> 9160 (Cassandra client port (Thrift)) in that particular node it's
connected to ring however other nodes are working with same configuration.
>>>
>>> Now Opscenter is installed in that particular node after explicitly
enabling
>>> 61620 (OpsCenter monitoring port), 61621 (OpsCenter agent port) in all
nodes though in other nodes error is displaying while installing from GUI as
>>>
>>> "Unable to find a java executable! Please install java or set
JAVA_HOME. Exit code: 4".
>>>
>>> Though java is installed & JAVA_HOME is also set for all users.
>>> $ echo $JAVA_HOME
>>>
>>> /app/jdk1.6.0_16
>>>
>>> Please help!
>>>
>>> On Apr 9, 2014 9:06 PM, "Michael Shuler" <mich...@pbandjelly.org> wrote:
>>>
>>> On 04/08/2014 11:25 AM, Joyabrata Das wrote:
>>>
>>> Further observed that problematic node has Ubuntu 64-Bit & other nodes
>>> are Ubuntu 32-Bit, can it be the reason?
>>>
>>>
>>> This may not be recommended, might/should(?) work, and may be a reason
[0]. My first suggestion would be to remove this variable. This would also
give you a chance to go through the steps of adding a new node to the
cluster again [1] - you might stumble on something.
>>>
>>> [0]
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/can-I-have-a-mix-of-32-and-64-bit-machines-in-a-cluster-td7583051.html
>>> [1]
http://www.datastax.com/documentation/cassandra/1.2/cassandra/operations/ops_add_node_to_cluster_t.html
>>>
>>> --
>>> Michael
>
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