UbuntuTips7:Ununtu两台服务器传文件

1. 安装SSH

互传文件的每台机器都需要安装

1.1 安装


# 更新
sudo apt-get update
 
# 安装
sudo apt-get install openssh-client 
sudo apt-get install openssh-server
 
# 修改文件
vi /etc/ssh/sshd_config

1.2. 添加信息


# 添加信息
PermitRootLogin yes

1.3 重启SSH服务


sudo service ssh restart

1.4 查看SSH

ssh-agent表示ssh-client启动

sshd表示ssh-server启动了


ps -ef |grep ssh

1.5 测试

docker01中连接docker02


root@docker01:~# ssh docker02
root@docker02's password: 
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.11.0-40-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

197 updates can be installed immediately.
0 of these updates are security updates.
To see these additional updates run: apt list --upgradable

Your Hardware Enablement Stack (HWE) is supported until April 2025.
*** System restart required ***

The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

root@docker02:~#

2. SCP

rsync主要用于备份和镜像。具有速度快、避免复制相同内容和支持符号链接的优点。

rsync做文件的复制要比scp的速度快，rsync只对差异文件做更新。scp是把所有文件都复制过去。

补充一点，需要自己创建对应文件夹

在/usr/local/bin 目录下创建 xsync 文件


root@docker:/home# cd /usr/local/bin/
root@docker:/usr/local/bin# touch xsync
root@docker:/usr/local/bin# ll
total 12448
drwxr-xr-x  2 root root     4096 11月 20 11:03 ./
drwxr-xr-x 10 root root     4096 2月  10  2021 ../
-rwxr-xr-x  1 root root 12737304 11月 18 20:40 docker-compose*
-rw-r--r--  1 root root        0 11月 20 11:03 xsync
root@docker:/usr/local/bin#

在xsync文件下编写

Note:这里的slave对应自己主机名，需要做相应修改。


#!/bin/bash
# $#：表示传递给脚本或函数的参数个数。
#1 获取输入参数个数，如果没有参数，直接退出
pcount=$#
if((pcount==0)); then
echo no args;
exit;
fi

#2 获取文件名称
p1=$1
fname=`basename $p1`
echo fname=$fname

#3 获取上级目录到绝对路径
pdir=`cd -P $(dirname $p1); pwd`
echo pdir=$pdir

#4 获取当前用户名称
user=`whoami`

#5 循环
for host in {docker01,docker02,docker03,docker04}; do
        #echo $pdir/$fname $user@$host:$pdir
        echo --------------- $host ----------------
        rsync -rvl $pdir/$fname $user@$host:$pdir
done

修改脚本xsync具有执行权限


root@docker01:/usr/local/bin# chmod 777 xsync

调用脚本


#xsync  文件名
root@docker01:/home# ls
docker01  test.txt
root@docker01:/home# xsync test.txt

效果如图