![]() ![]() Connect to the remote server and use the ssh-copy-id command: ssh-copy-ide remoteusername serveripaddress 2. To enable passwordless access, you need to upload a copy of the public key to the remote server. I am confused and do not know how to solve the problem. Option 1: Upload Public Key Using the ssh-copy-id Command. Ssh: connect to host e121a0ef81ef port 22: Connection refused I checked that each container could recognize other containers with running this command on each container: ping -c 1 -q ContainerIDīut, when I want to run this command: ssh e121a0ef81ef Then,I ran hadoop image with container network on each host like this: sudo docker run -it -net mycontainernetwork my-hadoop If this is the case, you should be able to find it by logging in to your MyKinsta dashboard. ![]() I connected three hosts with running this command on each host: sudo weave launch However, some hosting providers (including Kinsta) change their SSH port number for security reasons. I installed weave net and made a container network like this: docker plugin install weaveworks/net-plugin:latest_releaseĭocker network create -driver=weaveworks/net-plugin:latest_release please change the scope 'localhost /ip address ' in the custom list. For local application development like hadoop on windows please. RUN echo export YARN_NODEMANAGER_USER="root" >Īfter building the docker file. ssh-copy-id is a script that uses ssh(1) to log into a remote machine (presumably using a login password, so password authentication should be enabled). Go to windows firewall of security section in control panel. RUN echo export YARN_RESOURCEMANAGER_USER="root" > RUN echo export HDFS_SECONDARYNAMENODE_USER="root" > RUN echo export HDFS_DATANODE_USER="root" > ![]() RUN echo export HDFS_NAMENODE_USER="root" > > ~/.ssh/authorized_keys & chmod 0600 ~/.ssh/authorized_keysĪDD core-site.xml $HADOOP_HOME/etc/hadoop/ĪDD hdfs-site.xml $HADOOP_HOME/etc/hadoop/ĪDD mapred-site.xml $HADOOP_HOME/etc/hadoop/ firewall-cmd -permanent -add-port22/tcp firewall-cmd -reload OR sudo ufw allow 22/tcp sudo ufw reload Now try to re-connect to the remote server once more via SSH. RUN ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa & cat ~/.ssh/id_rsa.pub Then use the firewall-cmd (RHEL/CentOS/Fedora) or UFW (Debian/Ubuntu) to open port 22 (or the port you configured to be used for SSH) in the firewall as follows. # download and extract hadoop, set JAVA_HOME in hadoop-env.sh, updateģ.1.0/hadoop-3.1.0.tar.gz & tar -xzf hadoop-3.1.0.tar.gz & \Įcho "export JAVA_HOME=$JAVA_HOME" > $HADOOP_HOME/etc/hadoop/Įcho "PATH=$PATH:$HADOOP_HOME/bin" > ~/.bashrc RUN apt-get update & apt-get install -y ssh rsync vim openjdk-8-jdk FROM ubuntu_mesosĮNV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64 I use this docker file to make a hadoop image. I want to have a distributed file system,HDFS, among three container. I have three hosts with docker installed on each of them. ![]()
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