Shulou(Shulou.com)06/03 Report--

# # 1) Environment initializationNote:At least three nodes, the Master node at least 6G of memory And the other two at least 4G of memory |-| | Host | Server | Agent | zookeeper | namenode | secondarynamenode | datanode | |- -| | cdh01 Master | Y | |- -| | cdh02 slave | | Y | Y | | Y | Y | |- -| | cdh03 slave | | Y | Y | Y | | |-| | cdh04 slave | | Y | | | Y | Y |-|-| -- | cdh05 slave | | Y | | _ _ | # # Name resolution on every nodes## # # cat > / etc/hosts / etc/sysctl.confecho 'net.ipv6.conf.default.disable_ipv6 = 1' > > / etc/sysctl.confecho 'vm.swappiness = 0' > > / etc/sysctl.confsysctl-pecho never > / sys/kernel/mm/transparent_hugepage/defragecho 'echo never > / sys/kernel/mm/transparent_hugepage/defrag' > > / etc/rc.localchmod + x / etc/rc.d/rc.localgroupadd hadoop-g 700useradd hadoop-g hadoop-u 700echo "hadoop123" | passwd-- stdin hadoopecho 'hadoop ALL= (ALL) NOPASSWD: ALL' > > / etc/sudoersecho "ulimit-SHn 204800" > > / etc/rc.localecho "ulimit-SHu 204800" > > / etc/rc.localcat > > / etc/security/limits.conf / etc/nginx/nginx.conf

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