概述
上节主要是针对rsync服务端进行的配置和详解，本节主要针对在客户端上的rsync配置进行讲解。
rsync用法
本地到本地
语法：rsync [OPTION…] SRC… [DEST]
用法示例一：将/home/kl/ss目录里的内容同步到/home/kl/ss_new目录中
[kl@cdh-datanode1 ~]$ ls -l
总用量 16
drwxr-xr-x. 4 root root 4096 7月 19 12:23 newss
drwxr-xr-x. 4 kl kl 4096 7月 19 12:23 ss
drwxrwxr-x. 2 kl kl 4096 8月 2 10:37 ss_new
drwxrwxr-t. 2 kl kl 4096 7月 21 13:18 test
[kl@cdh-datanode1 ~]$ rsync -azvP ss/ ss_new/
sending incremental file list
./
auditd
3580 100% 0.00kB/s 0:00:00 (xfer#1, to-check=68/70)
blk-availability
1343 100% 1.28MB/s 0:00:00 (xfer#2, to-check=67/70)
crond
2826 100% 2.70MB/s 0:00:00 (xfer#3, to-check=66/70)
functions
25419 100% 4.04MB/s 0:00:00 (xfer#4, to-check=65/70)
halt
5985 100% 730.59kB/s 0:00:00 (xfer#5, to-check=64/70)
............
............
ss/udev-post
2294 100% 31.11kB/s 0:00:00 (xfer#66, to-check=1/70)
ss/newss/sent 119700 bytes received 1281 bytes 241962.00 bytes/sec
total size is 332288 speedup is 2.75
[kl@cdh-datanode1 ~]$ ls -l ss_new/
总用量 236
-rwxr-xr-x. 1 kl kl 3580 7月 19 12:03 auditd
-rwxr-xr-x. 1 kl kl 1343 7月 19 12:03 blk-availability
-rwxr-xr-x. 1 kl kl 2826 7月 19 12:03 crond
-rwxr-xr-x. 1 kl kl 25419 7月 19 12:03 functions
-rwxr-xr-x. 1 kl kl 5985 7月 19 12:03 halt
................
用法示例二：只接源目录表示列出源目录里面的文件内容,这个时候DEST参数是省略不使用的
[kl@cdh-datanode1 ~]$ rsync ss/
drwxr-xr-x 4096 2017/07/19 12:23:20 .
-rwxr-xr-x 3580 2017/07/19 12:03:52 auditd
-rwxr-xr-x 1343 2017/07/19 12:03:52 blk-availability
-rwxr-xr-x 2826 2017/07/19 12:03:52 crond
-rwxr-xr-x 25419 2017/07/19 12:03:52 functions
-rwxr-xr-x 5985 2017/07/19 12:03:52 halt
-rwxr-xr-x 11169 2017/07/19 12:03:52 ip6tables
-rwxr-xr-x 11048 2017/07/19 12:03:52 iptables
-rwxr-xr-x 9980 2017/07/19 12:03:52 jexec
-rwxr-xr-x 20634 2017/07/19 12:03:52 kdump
-rwxr-xr-x 652 2017/07/19 12:03:52 killall
-rwxr-xr-x 2137 2017/07/19 12:03:52 lvm2-lvmetad
-rwxr-xr-x 3045 2017/07/19 12:03:52 lvm2-monitor
-rwxr-xr-x 2571 2017/07/19 12:03:52 mdmonitor
-rwxr-xr-x 2200 2017/07/19 12:03:52 messagebus
-rwxr-xr-x 2989 2017/07/19 12:03:52 netconsole
-rwxr-xr-x 5309 2017/07/19 12:03:52 netfs
-rwxr-xr-x 6406 2017/07/19 12:03:52 network
-rwxr-xr-x 3570 2017/07/19 12:03:52 nfs-rdma
-rwxr-xr-x 1923 2017/07/19 12:03:52 ntpd
...................
服务端同步到本地（Pull）
这种方式也分为SSH和RSYNC两种同步方式
通过SSH方式进行同步
语法：rsync [OPTION…] [USER@]HOST:SRC… [DEST]
实际案例：
我有两台主机cdh-datanode1和cdh-datanode2，现在我想同步cdh-datanode2上/root目录下所有的内容到cdh-datanode1的/home/kl/test目录下
在这里SRC就表示cdh-datanode2 上的/root,DEST就表示cdh-datanode1上的/home/kl/test.所以记住一点,你要进行同步的目录文件所在的设备是作为SRC的
[kl@cdh-datanode1 test]$ rsync -azvP root@cdh-datanode2:/root/ /home/kl/test/
The authenticity of host 'cdh-datanode2 (192.168.100.102)' can't be established.
RSA key fingerprint is SHA256:BOi8rknsSr1IzI7fqGyWUGbAdp5hz/rmf0nnQ/DYKO4.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'cdh-datanode2,192.168.100.102' (RSA) to the list of known hosts.
root@cdh-datanode2's password:
bash: rsync: command not found
rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: remote command not found (code 127) at io.c(600) [receiver=3.0.6]
[kl@cdh-datanode1 test]$ rs
rsvg rsvg-convert rsvg-view rsync rsyslogd
[kl@cdh-datanode1 test]$ rsync -azvP root@cdh-datanode2:/root/ /home/kl/test/
root@cdh-datanode2's password:
receiving incremental file list
./
.Xauthority
59 100% 57.62kB/s 0:00:00 (xfer#1, to-check=41/43)
.bash_history
1095 100% 1.04MB/s 0:00:00 (xfer#2, to-check=40/43)
.bash_logout
18 100% 17.58kB/s 0:00:00 (xfer#3, to-check=39/43)
.bash_profile
176 100% 85.94kB/s 0:00:00 (xfer#4, to-check=38/43)
.bashrc
176 100% 85.94kB/s 0:00:00 (xfer#5, to-check=37/43)
.cshrc
100 100% 24.41kB/s 0:00:00 (xfer#6, to-check=36/43)
.tcshrc
129 100% 31.49kB/s 0:00:00 (xfer#7, to-check=35/43)
.viminfo
670 100% 130.86kB/s 0:00:00 (xfer#8, to-check=34/43)
anaconda-ks.cfg
1096 100% 178.39kB/s 0:00:00 (xfer#9, to-check=33/43)
id_rsa.pub
399 100% 55.66kB/s 0:00:00 (xfer#10, to-check=32/43)
install.log
14625 100% 1.07MB/s 0:00:00 (xfer#11, to-check=31/43)
install.log.syslog
3482 100% 242.89kB/s 0:00:00 (xfer#12, to-check=30/43)
jdk-7u80-linux-x64.rpm
138090286 100% 5.83MB/s 0:00:22 (xfer#13, to-check=29/43)
salt-rhel6_v201603.zip
12734065 100% 5.56MB/s 0:00:02 (xfer#14, to-check=28/43)
.ssh/
.ssh/authorized_keys
399 100% 2.06kB/s 0:00:00 (xfer#15, to-check=25/43)
.ssh/known_hosts
397 100% 2.04kB/s 0:00:00 (xfer#16, to-check=24/43)
salt-rhel6_v201603/
salt-rhel6_v201603/PyYAML-3.11-1.el6.x86_64.rpm
155352 100% 692.74kB/s 0:00:00 (xfer#17, to-check=23/43)
salt-rhel6_v201603/install_saltstack.sh
2634 100% 11.64kB/s 0:00:00 (xfer#18, to-check=22/43)
salt-rhel6_v201603/libyaml-0.1.3-4.el6.x86_64.rpm
52624 100% 223.44kB/s 0:00:00 (xfer#19, to-check=21/43)
salt-rhel6_v201603/openpgm-5.2.122-2.el6.x86_64.rpm
169716 100% 611.58kB/s 0:00:00 (xfer#20, to-check=20/43)
salt-rhel6_v201603/python-babel-0.9.4-5.1.el6.noarch.rpm
1493972 100% 2.38MB/s 0:00:00 (xfer#21, to-check=19/43)
salt-rhel6_v201603/python-backports-1.0-5.el6.x86_64.rpm
5024 100% 8.14kB/s 0:00:00 (xfer#22, to-check=18/43)
salt-rhel6_v201603/python-backports-ssl_match_hostname-3.4.0.2-2.el6.noarch.rpm
11416 100% 18.40kB/s 0:00:00 (xfer#23, to-check=17/43)
salt-rhel6_v201603/python-chardet-2.2.1-1.el6.noarch.rpm
234768 100% 349.49kB/s 0:00:00 (xfer#24, to-check=16/43)
salt-rhel6_v201603/python-crypto-2.6.1-2.el6.x86_64.rpm
512828 100% 633.93kB/s 0:00:00 (xfer#25, to-check=15/43)
salt-rhel6_v201603/python-futures-3.0.3-1.el6.noarch.rpm
27028 100% 33.28kB/s 0:00:00 (xfer#26, to-check=14/43)
salt-rhel6_v201603/python-jinja2-2.7.3-1.el6.noarch.rpm
531148 100% 608.09kB/s 0:00:00 (xfer#27, to-check=13/43)
salt-rhel6_v201603/python-markupsafe-0.11-10.el6.x86_64.rpm
24296 100% 27.69kB/s 0:00:00 (xfer#28, to-check=12/43)
salt-rhel6_v201603/python-msgpack-0.4.6-1.el6.x86_64.rpm
69704 100% 78.42kB/s 0:00:00 (xfer#29, to-check=11/43)
salt-rhel6_v201603/python-ordereddict-1.1-2.el6.noarch.rpm
7244 100% 8.09kB/s 0:00:00 (xfer#30, to-check=10/43)
salt-rhel6_v201603/python-requests-2.6.0-3.el6.noarch.rpm
96960 100% 106.15kB/s 0:00:00 (xfer#31, to-check=9/43)
salt-rhel6_v201603/python-six-1.9.0-2.el6.noarch.rpm
28500 100% 30.96kB/s 0:00:00 (xfer#32, to-check=8/43)
salt-rhel6_v201603/python-tornado-4.2.1-1.el6.x86_64.rpm
676864 100% 640.50kB/s 0:00:01 (xfer#33, to-check=7/43)
salt-rhel6_v201603/python-urllib3-1.10.2-1.el6.noarch.rpm
102716 100% 1.81MB/s 0:00:00 (xfer#34, to-check=6/43)
salt-rhel6_v201603/python-zmq-14.5.0-2.el6.x86_64.rpm
490712 100% 2.98MB/s 0:00:00 (xfer#35, to-check=5/43)
salt-rhel6_v201603/salt-2016.3.0-1.el6.noarch.rpm
6543724 100% 3.99MB/s 0:00:01 (xfer#36, to-check=4/43)
salt-rhel6_v201603/salt-master-2016.3.0-1.el6.noarch.rpm
1440128 100% 1.57MB/s 0:00:00 (xfer#37, to-check=3/43)
salt-rhel6_v201603/salt-minion-2016.3.0-1.el6.noarch.rpm
31984 100% 35.53kB/s 0:00:00 (xfer#38, to-check=2/43)
salt-rhel6_v201603/yum-utils-1.1.30-30.el6.noarch.rpm
112332 100% 122.57kB/s 0:00:00 (xfer#39, to-check=1/43)
salt-rhel6_v201603/zeromq-4.0.5-4.el6.x86_64.rpm
581800 100% 551.62kB/s 0:00:01 (xfer#40, to-check=0/43)sent 782 bytes received 162931774 bytes 4722682.78 bytes/sec
total size is 164250646 speedup is 1.01
上面第一次进行rsync同步SRC到DEST的时候出错了，经过排错发现是因为SRC设备上未安装rsync可执行程序的，在SRC设备上安装好后再次执行就好了。
通过RSYNC DEAMON进行同步
语法：
rsync [OPTION…] [USER@]HOST::SRC… [DEST]
rsync [OPTION…] rsync://[USER@]HOST[:PORT]/SRC… [DEST]
案例见”利用rsync备份生产应用(一)” 小节”从备份服务器下载文件(pull)”，这里需要注意的是SRC里面指代的路径开头是在rsync服务器配置文件中的模块的名字，有不清楚的详看”利用rsync备份生产应用(一)”
本地同步到服务端（Push）
这种方式也分为SSH和RSYNC两种同步方式
通过SSH方式进行同步
语法：rsync [OPTION…] SRC… [USER@]HOST:DEST
实际案例：
我有两台主机cdh-datanode1和cdh-datanode2，现在我想同步cdh-datanode1上/home/kl/test目录下所有的内容到cdh-datanode2的/root目录下
[kl@cdh-datanode1 test]$ rsync -azvP /home/kl/test/ root@cdh-datanode2:/root/
root@cdh-datanode2's password:
sending incremental file list
./
.viminfo
670 100% 0.00kB/s 0:00:00 (xfer#1, to-check=34/43)
.ssh/
salt-rhel6_v201603/sent 2064 bytes received 171 bytes 406.36 bytes/sec
total size is 164250646 speedup is 73490.22
[kl@cdh-datanode1 test]$
通过RSYNC DEAMON进行同步
语法：
rsync [OPTION…] SRC… [USER@]HOST::DEST
rsync [OPTION…] SRC… rsync://[USER@]HOST[:PORT]/DEST
案例见”利用rsync备份生产应用(一)” 小节”备份文件到备份服务器(push)”，这里需要注意的是DEST里面指代的路径开头是在rsync服务器配置文件中的模块的名字，有不清楚的详看”利用rsync备份生产应用(一)”
