1、单向同步A->B
主机A，IP:192.168.0.135[root@server35 ~]# yum install rsync -y[root@server35 ~]# yum install xinetd -y[root@server35 ~]# mkdir /opt/sersync[root@server35 ~]# vim /etc/rsyncd.confuid=rootgid=rootmax connections=36000use chroot=nolog file=/var/log/rsyncd.logpid file=/var/run/rsyncd.pidlock file=/var/run/rsyncd.lock[sersync]path=/opt/sersynccomment = test filesignore errors = yesread only = nohosts allow = 192.168.0.152hosts deny = *[root@server35 ~]# vim /etc/xinetd.d/rsync disable = no[root@server35 ~]# /etc/init.d/xinetd restart主机B，IP192.168.0.152lftp i:~> get pub/docs/sersync/sersync2.5.4_64bit_binary_stable_final.tar.gz[root@test ~]# tar zxf sersync2.5.4_64bit_binary_stable_final.tar.gz[root@test ~]# yum install rsync xinetd -y[root@test ~]# mkdir /opt/tongbu[root@server35 ~]# vim /etc/xinetd.d/rsync disable = no[root@server35 GNU-Linux-x86]# /etc/init.d/xinetd restart[root@test GNU-Linux-x86]# vim confxml.xml <attrib start="true"/> <modify start="true"/> <sersync> <localpath watch="/opt/tongbu"> <remote ip="192.168.2.135" name="sersync"/>[root@test GNU-Linux-x86]# ./sersync2 -r -d然后在tongbu中建立文件就会同步到135的sersync
2、添加一个同步目录
A主机：[root@server35 opt]# mkdir sersync1[root@server35 opt]# vim /etc/rsyncd.conf 添加[sersync1]path=/opt/sersync1comment = test filesignore errors = yesread only = nohosts allow = 192.168.0.152hosts deny = *[root@server35 opt]# /etc/init.d/xinetd restartB主机：[root@test GNU-Linux-x86]# cp confxml.xml confxml-1.xml[root@test GNU-Linux-x86]# vim confxml-1.xml <sersync> <localpath watch="/opt/tongbu1"> <remote ip="192.168.2.135" name="sersync1"/>[root@test GNU-Linux-x86]# mkdir /opt/tongbu1[root@test GNU-Linux-x86]# ./sersync2 -r -d -o confxml-1.xmltongbu1就会和sersync1同步
3、DRDB双向同步
[root@server35 ~]# yum install make gcc rpm-build flex kernel-devel -y
lftp i:~> get pub/docs/drbd/rhel6/drbd-8.4.3.tar.gz[root@server35 ~]# tar zxf drbd-8.4.3.tar.gz[root@server35 ~]# cd drbd-8.4.3[root@server35 drbd-8.4.3]# ./configure –enable-spec –with-km[root@server35 drbd-8.4.3]# rpmbuild -bb drbd.spec[root@server35 drbd-8.4.3]# cp ~/drbd-8.4.3.tar.gz ../rpmbuild/SOURCES/[root@server35 drbd-8.4.3]# rpmbuild -bb drbd.spec[root@server35 drbd-8.4.3]# rpmbuild -bb drbd-km.spec[root@server35 x86_64]# rpm -ivh *添加虚拟磁盘2G[root@server35 ~]# fdisk -cu /dev/vdbCommand (m for help): nommand action e extended p primary partition (1-4)pPartition number (1-4): 1First sector (2048-4194303, default 2048): Using default value 2048Last sector, +sectors or +size{K,M,G} (2048-4194303, default 4194303):Using default value 4194303Command (m for help): tHex code (type L to list codes): 8eCommand (m for help): w[root@server35 ~]# pvcreate /dev/vdb1[root@server35 ~]# vgcreate drbdvg /dev/vdb1[root@server35 ~]# lvcreate -L 1G -n demo drbdvg[root@server35 ~]# vim /etc/drbd.d/drbd.resresource demo{meta-disk internal;device /dev/drbd1;syncer {verify-alg sha1;} net { allow-two-primaries;} on server35.example.com {disk /dev/drbdvg/demo;address 192.168.2.135:7789;}on test.example.com {disk /dev/drbdvg/demo;address 192.168.2.152:7789;}}[root@server35 x86_64]# scp * 192.168.2.152:/root/然后在152上[root@test ~]# rpm -ivh drbd-*添加硬盘做同样操作在135上[root@server35 ~]# scp /etc/drbd.d/drbd.res 192.168.2.152:/etc/drbd.d[root@server35 ~]# drbdadm create-md demo 创建DRBR块[root@server35 ~]# /etc/init.d/drbd start然后启动152的drbd[root@server35 ~]# drbdsetup /dev/drbd1 primary –force将152的磁盘设为主磁盘[root@server35 ~]# cat /proc/drbd 查看drbd状态[root@server35 ~]# drbdsetup /dev/drbd1 primary –force 强制为主磁盘[root@server35 ~]# mkfs.ext4 /dev/drbd1 格式化磁盘[root@server35 ~]# mount /dev/drbd1 /mnt/挂载磁盘到mnt，建立文件[root@server35 ~]# umount /mnt/ 卸载之后，在第二磁盘上查看[root@server35 ~]# drbdadm secondary demo 设置为第二磁盘[root@test ~]# drbdsetup /dev/drbd1 primary –force[root@test ~]# mount /dev/drbd1 /mnt/查看建立的文件！
既有美妙的风景，也会有称不上景、只有风的地方。
