lvs

关闭linux(window--netsh firewall set opmode disable)防火墙:
chkconfig iptables off

禁用selinux
vi /etc/selinux/config

创建LVS负载端接口
ifconfig eth0:8 192.168.17.100/24

创建RS端环回接口
ifconfig lo:8 192.168.17.6/32 ifconfig lo:8 192.168.17.7/32

让内核具有转发功能：
echo "1">/proc/sys/net/ipv4/ip_forward
cat /proc/sys/net/ipv4/ip_forward

RS配置接口通告等级:
echo "1">/proc/sys/net/ipv4/conf/eth0/arp_ignore
echo "2">/proc/sys/net/ipv4/conf/eth0/arp_announce
echo "1">/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2">/proc/sys/net/ipv4/conf/all/arp_announce

cat /proc/sys/net/ipv4/conf/eth0/arp_ignore
cat /proc/sys/net/ipv4/conf/eth0/arp_announce
cat /proc/sys/net/ipv4/conf/all/arp_ignore
cat /proc/sys/net/ipv4/conf/all/arp_announce

LVS负载端配置RS和LVS规则
ipvsadm -A -t $vip:80 -s rr
ipvsadm -a -t $vip:80 -r $rip1:80 -g

配置LVS HA--keepalived
首先必须清空LVS旧的规则,确保LVS可以正常负载 node01 node02 node03 node04
ipvsadm -C LVS LVS RS RS
keepalived 主 备
下载keepalived
yum install keepalived

修改keepalived.conf

分发keepalived.conf到备节点并修改优先级

启动keepalived。会在网卡创建一个新的接口

http://tengine.taobao.org

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hdfs dfs 命令
Usage: hadoop fs [generic options]
[-appendToFile <localsrc> ... <dst>]
[-cat [-ignoreCrc] <src> ...]
[-checksum <src> ...]
[-chgrp [-R] GROUP PATH...]
[-chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH...]
[-chown [-R] [OWNER][:[GROUP]] PATH...]
[-copyFromLocal [-f] [-p] [-l] <localsrc> ... <dst>]
[-copyToLocal [-p] [-ignoreCrc] [-crc] <src> ... <localdst>]
[-count [-q] [-h] <path> ...]
[-cp [-f] [-p | -p[topax]] <src> ... <dst>]
[-createSnapshot <snapshotDir> [<snapshotName>]]
[-deleteSnapshot <snapshotDir> <snapshotName>]
[-df [-h] [<path> ...]]
[-du [-s] [-h] <path> ...]
[-expunge]
[-get [-p] [-ignoreCrc] [-crc] <src> ... <localdst>]
[-getfacl [-R] <path>]
[-getfattr [-R] {-n name | -d} [-e en] <path>]
[-getmerge [-nl] <src> <localdst>]
[-help [cmd ...]]
[-ls [-d] [-h] [-R] [<path> ...]]
[-mkdir [-p] <path> ...]
[-moveFromLocal <localsrc> ... <dst>]
[-moveToLocal <src> <localdst>]
[-mv <src> ... <dst>]
[-put [-f] [-p] [-l] <localsrc> ... <dst>]
[-renameSnapshot <snapshotDir> <oldName> <newName>]
[-rm [-f] [-r|-R] [-skipTrash] <src> ...]
[-rmdir [--ignore-fail-on-non-empty] <dir> ...]
[-setfacl [-R] [{-b|-k} {-m|-x <acl_spec>} <path>]|[--set <acl_spec> <path>]]
[-setfattr {-n name [-v value] | -x name} <path>]
[-setrep [-R] [-w] <rep> <path> ...]
[-stat [format] <path> ...]
[-tail [-f] <file>]
[-test -[defsz] <path>]
[-text [-ignoreCrc] <src> ...]
[-touchz <path> ...]
[-usage [cmd ...]]

Generic options supported are
-conf <configuration file> specify an application configuration file
-D <property=value> use value for given property
-fs <local|namenode:port> specify a namenode
-jt <local|resourcemanager:port> specify a ResourceManager
-files <comma separated list of files> specify comma separated files to be copied to the map reduce cluster
-libjars <comma separated list of jars> specify comma separated jar files to include in the classpath.
-archives <comma separated list of archives> specify comma separated archives to be unarchived on the compute machines.