I'm following this tutorial for installing hadoop on my OS-X Yosemite.
On starting the server I get the following message:
Starting namenodes on [localhost]
Starting secondary namenodes [0.0.0.0]
15/02/06 10:59:20 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
starting yarn daemons
starting resourcemanager, logging to /usr/local/Cellar/hadoop/2.6.0/libexec/logs/yarn-sverma-resourcemanager-Ban-1sverma-m.local.out
However, on running any example, I'm getting the following exception:
java.net.ConnectException: Call From Ban-1sverma-m.local/10.177.55.82 to localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:731)
at org.apache.hadoop.ipc.Client.call(Client.java:1472)
at org.apache.hadoop.ipc.Client.call(Client.java:1399)
On doing a telnet localhost 9000, I see:
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host
Can anyone please tell why my server is not running ?
EDIT:
This is the log inside yarn-sverma-resourcemanager-Ban-1sverma-m.local.log :
2015-02-05 16:41:07,723 INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting ResourceManager
STARTUP_MSG: host = Ban-1sverma-m.local/10.177.55.82
STARTUP_MSG: args = []
STARTUP_MSG: version = 2.6.0
Try to manually start the services and check the log files.
I have seen Connection Refused messages when the config files contain an external hostname or IP address, but the clients attempt to connect to the localhost, which resolves to the loopback address. This answer might help.
Related
I installed Hadoop == '3.3.4' in UBUNTU VERSION="20.04.4 LTS (Focal Fossa)".
After installation and formatting the namenode i worte the following command
samar#pc:~/hadoop-3.3.4/sbin$ ./start-all.sh
But it gave the output as:
Starting namenodes on [localhost]
localhost: ssh: connect to host localhost port 22: Connection refused
Starting datanodes
localhost: ssh: connect to host localhost port 22: Connection refused
Starting secondary namenodes [pc]
pc: ssh: connect to host pc port 22: Connection refused
2022-08-25 13:22:46,349 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting resourcemanager
Starting nodemanagers
localhost: ssh: connect to host localhost port 22: Connection refused
ssh connection output is:
I use a VMware virtualization system. I have centos release 7 as my operating system. I installed hadoop2.7.1. After installing Hadoop I ran the command :#hdfs namenode -format, it ran successfully. But when I run the command :#./start-all.sh it gives me errors. I tried several proposals that I saw on the internet but the problem persists
[root#MASTER sbin]# ./start-all.sh
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
21/06/17 19:06:27 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [MASTER]
root#master's password:
MASTER: starting namenode, logging to /usr/local/hadoop/logs/hadoop-root-namenode-MASTER.out
localhost: ssh: connect to host localhost port 22: Connection refused
Starting secondary namenodes [0.0.0.0]
0.0.0.0: ssh: connect to host 0.0.0.0 port 22: Connection refused
21/06/17 19:06:49 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop/logs/yarn-root-resourcemanager-MASTER.out
localhost: ssh: connect to host localhost port 22: Connection refused
Provide ssh-key less access to all your worker nodes in hosts file, even localhost. Read instruction in the Tutorial of How To Set Up SSH Keys on CentOS 7.
At last test access without password by ssh localhost and ssh [yourworkernode].
Also, run start-dfs.sh and if was successful run start-yarn.sh.
Starting secondary namenodes [7]
7: ssh: connect to host 0.0.0.7 port 22: Connection timed out
secondary namenode not started due to connection timeout
how to fix this on Ubuntu 20.04.1 LTS?
vivek#7:~$ start-all.sh
WARNING: Attempting to start all Apache Hadoop daemons as pradeep in 10 seconds.
WARNING: This is not a recommended production deployment configuration.
WARNING: Use CTRL-C to abort.
Starting namenodes on [localhost]
Starting datanodes
Starting secondary namenodes [7]
7: ssh: connect to host 0.0.0.7 port 22: Connection timed out
2020-10-15 18:00:39,116 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting resourcemanager
Starting nodemanagers
vivek#7:~$ jps
6256 NodeManager
5649 NameNode
6098 ResourceManager
6586 Jps
5788 DataNode
I'm trying to configure Hadoop in fully distributed mode with 1 master and 1 slave as different nodes. I have attached a screenshot showing the status of my master and slave nodes.
In Master:
ubuntu#hadoop-master:/usr/local/hadoop/etc/hadoop$ $HADOOP_HOME/bin/hdfs dfsadmin -refreshNodes
refreshNodes: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: Protocol message tag had invalid wire type.; Host Details : local host is: "hadoop-master/127.0.0.1"; destination host is: "hadoop-master":8020;
This is the error I'm getting when I try to run the refresh nodes command. Can anyone tell me what I'm missing or what mistake have I done ?
Master & Slave Screenshot
2016-04-26 03:29:17,090 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Stopping services started for standby state
2016-04-26 03:29:17,095 INFO org.mortbay.log: Stopped HttpServer2$SelectChannelConnectorWithSafeStartup#0.0.0.0:50070
2016-04-26 03:29:17,095 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NameNode metrics system...
2016-04-26 03:29:17,095 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system stopped.
2016-04-26 03:29:17,096 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system shutdown complete.
2016-04-26 03:29:17,097 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.
java.net.BindException: Problem binding to [hadoop-master:8020] java.net.BindException: Address already in use; For more details see: http://wiki.apache.org/hadoop/BindException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:721)
at org.apache.hadoop.ipc.Server.bind(Server.java:425)
at org.apache.hadoop.ipc.Server$Listener.(Server.java:574)
at org.apache.hadoop.ipc.Server.(Server.java:2215)
at org.apache.hadoop.ipc.RPC$Server.(RPC.java:938)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.(ProtobufRpcEngine.java:534)
at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:509)
at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:783)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.(NameNodeRpcServer.java:344)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createRpcServer(NameNode.java:673)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:646)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:811)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:795)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1488)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1554)
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:463)
at sun.nio.ch.Net.bind(Net.java:455)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.hadoop.ipc.Server.bind(Server.java:408)
... 13 more
2016-04-26 03:29:17,103 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2016-04-26 03:29:17,109 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop-master/127.0.0.1
************************************************************/
ubuntu#hadoop-master:/usr/local/hadoop$
DFS needs to be formatted. Just issue the following command ;
hadoop namenode -format
Or
hdfs namenode -format
Check your namenode address in core-site.xml. Change to 50070 or 9000 and try
The default address of namenode web UI is http://localhost:50070/. You can open this address in your browser and check the namenode information.
The default address of namenode server is hdfs://localhost:8020/. You can connect to it to access HDFS by HDFS api. The is the real service address.
http://blog.cloudera.com/blog/2009/08/hadoop-default-ports-quick-reference/
Try to format the Namenode.
$] hadoop namenode -format
Your error logs clearly say that It is not able to bind the default port.
java.net.BindException: Problem binding to [hadoop-master:8020] java.net.BindException: Address already in use; For more details see: http://wiki.apache.org/hadoop/BindException
You need to change the default port to some port which is free.
Here is the list of ports given in hdfs-default.xml and here.
everyone, I have a little problem when I build the Hadoop Cluster
My node install CentOS 6.5,java1.7.60 and hadoop 2.2.0
I want to build a master and three slaves
I try to build it like this
But in the end of this, I try to start up my namenode and datanode
My /etc/hosts like this:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.10.10.10 master
10.10.10.11 slave1
10.10.10.12 slave2
10.10.10.13 slave3
Just like this when I type:
$ hadoop namenode -fromat:
java.net.UnknownHostException: hadoop01.hadoopcluster: hadoop01.hadoopcluster
at java.net.InetAddress.getLocalHost(InetAddress.java:1473)
at org.apache.hadoop.net.DNS.resolveLocalHostname(DNS.java:264)
at org.apache.hadoop.net.DNS.<clinit>(DNS.java:57)
at org.apache.hadoop.hdfs.server.namenode.NNStorage.newBlockPoolID(NNStorage.java:914)
at org.apache.hadoop.hdfs.server.namenode.NNStorage.newNamespaceInfo(NNStorage.java:550)
at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:144)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:837)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1213)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
Caused by: java.net.UnknownHostException: hadoop01.hadoopcluster
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293)
at java.net.InetAddress.getLocalHost(InetAddress.java:1469)
... 8 more
14/07/01 16:50:46 WARN net.DNS: Unable to determine address of the host-falling back to "localhost" address
java.net.UnknownHostException: hadoop01.hadoopcluster: hadoop01.hadoopcluster
at java.net.InetAddress.getLocalHost(InetAddress.java:1473)
at org.apache.hadoop.net.DNS.resolveLocalHostIPAddress(DNS.java:287)
at org.apache.hadoop.net.DNS.<clinit>(DNS.java:58)
at org.apache.hadoop.hdfs.server.namenode.NNStorage.newBlockPoolID(NNStorage.java:914)
at org.apache.hadoop.hdfs.server.namenode.NNStorage.newNamespaceInfo(NNStorage.java:550)
at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:144)
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:837)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1213)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
Caused by: java.net.UnknownHostException: hadoop01.hadoopcluster
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293)
at java.net.InetAddress.getLocalHost(InetAddress.java:1469)
... 8 more
and try to issue start-dfs.sh and start-yarn.sh:
$ start-dfs.sh
14/07/01 16:55:23 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [master]
master: namenode running as process 2395. Stop it first.
slave2: starting datanode, logging to /opt/hadoop/logs/hadoop-hadoop-datanode-hadoop03.hadopcluster.out
slave1: starting datanode, logging to /opt/hadoop/logs/hadoop-hadoop-datanode-hadoop02.hadopcluster.out
slave3: starting datanode, logging to /opt/hadoop/logs/hadoop-hadoop-datanode-hadoop04.hadopcluster.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: secondarynamenode running as process 2564. Stop it first.
14/07/01 16:55:31 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
$ start-yarn.sh
starting yarn daemons
starting resourcemanager, logging to /opt/hadoop/logs/yarn-hadoop-resourcemanager-hadoop01.hadoopcluster.out
slave1: starting nodemanager, logging to /opt/hadoop/logs/yarn-hadoop-nodemanager-hadoop02.hadopcluster.out
slave3: starting nodemanager, logging to /opt/hadoop/logs/yarn-hadoop-nodemanager-hadoop04.hadopcluster.out
slave2: starting nodemanager, logging to /opt/hadoop/logs/yarn-hadoop-nodemanager-hadoop03.hadopcluster.out
and type jps:
$ jps
2564 SecondaryNameNode
5591 Jps
2395 NameNode
I only look like this, didn't have DataNode, NodeManager, ResourceManger... etc,
Is it any where wrong when I setting it?
Could anyone can suggest me something, thanks!
DHCP (Dynamic Host Configuration Protocol)
it is a server deployed on an IP network and it is used to allocate IP addresses to its clients. Therefore you had to configure the DHCP on both the server and clients sides.
On the server side:
getting the package: isc-dhcp-server
editing /etc/network interfaces to configure interfaces, choose a static IP address for the DHCP server
specifying the local network interface DHCP will listen to (/etc/default/isc-dhcp-server)
editing configuration file /etc/dhcp/dhcpd.conf to choose the IP addresses that will be used by the local network, define the DNS server
On the client side:
editing /etc/network interfaces to configure interfaces
You can make sure that it is well installed and configured you can use ifconfig and ping commands.
DNS (Domain Name System)
intalling bind9
editing /etc/bind/named.conf to add hosts
Good luck.