一、批量管理
1.配置問密碼登陸
[root@localhost ~]# ssh-keygen -t dsa（生成密鑰）
Generating public/private dsa key pair.
Enter file in which to save the key (/root/.ssh/id_dsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
21:e3:80:d8:34:10:6c:26:8b:4c:72:fc:02:26:e5:8d [email protected]
[root@localhost ~]#
[root@localhost ~]# ssh-copy-id -i .ssh/id_dsa.pub 119.147.146.245（拷貝公鑰到要登陸的伺服器）
15
The authenticity of host '119.147.146.245 (119.147.146.245)' can't be established.
RSA key fingerprint is ba:7d:60:44:63:6c:f6:6a:9b:4b:ad:94:1b:98:2b:58.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '119.147.146.245' (RSA) to the list of known hosts.
[email protected]'s password:
Now try logging into the machine, with "ssh '119.147.146.245'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
[root@localhost ~]# ssh 119.147.146.245 ifconfig（遠端檢視單台伺服器的IP）
eth0 Link encap:Ethernet HWaddr 00:50:56:88:0F:01
inet addr:119.147.146.245 Bcast:119.147.146.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fe88:f01/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18264423 errors:0 dropped:0 overruns:0 frame:0
TX packets:1716785 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7166025790 (6.6 GiB) TX bytes:162270128 (154.7 MiB)
Base address:0x2000 Memory:d8920000-d8940000
遠端檢視多台伺服器的資訊箱
[root@localhost tmp]# echo 119.147.146.245 >>iplist（生成IP清單）
[root@localhost tmp]# echo 119.147.146.249 >>iplist
[root@localhost tmp]# echo 119.147.146.248 >>iplist
[root@localhost tmp]# vi manger.sh（撰寫腳本）
#!/bin/bash
for ip in `cat iplist`
do
echo "$ip----------------------------------------"
ssh $ip $1
done
[root@localhost tmp]# sh manger.sh df -h（遠端檢視多台伺服器的硬碟資訊）
119.147.146.245----------------------------------------
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroupRoot-LogVolRoot
14093368 3488436 9877484 27% /
/dev/sda1 101086 19012 76855 20% /boot
tmpfs 513468 0 513468 0% /dev/shm
/dev/sda5 53050708 185320 50170488 1% /mfsdata1
/dev/sda6 39065388 968620 36112344 3% /mfsdata2
/dev/sda7 39998020 968620 36997584 3% /mfsdata3
119.147.146.249----------------------------------------
10125560 3941852 5661060 42% /
/dev/mapper/VolGroupData-LogVolData
14220336 553532 12932804 5% /data
/dev/mapper/VolGroupData-LogVolLogs
4951688 141196 4554904 4% /data/logs
/dev/sda1 101086 12922 82945 14% /boot
tmpfs 513068 0 513068 0% /dev/shm
119.147.146.248----------------------------------------
10125560 4159936 5442976 44% /
14220336 189528 13296808 2% /data
4951688 141208 4554892 4% /data/logs
/dev/sda1 101086 21349 74518 23% /boot
[root@localhost tmp]# sh manger.sh free -m（遠端檢視多台伺服器的記憶體使用情況）
total used free shared buffers cached
Mem: 1026936 885652 141284 0 68036 711216
-/+ buffers/cache: 106400 920536
Swap: 4194296 108 4194188
Mem: 1026140 1016284 9856 0 154076 690928
-/+ buffers/cache: 171280 854860
Swap: 1052248 88 1052160
Mem: 1026140 977656 48484 0 48076 758976
-/+ buffers/cache: 170604 855536
Swap: 1052248 8 1052240
[root@localhost tmp]# sh manger.sh "useradd admin"（批量建使用者）
[root@localhost tmp]# sh manger.sh "echo 'king+5688'|passwd --stdin admin"（批量更改密碼）
Changing password for user admin.
passwd: all authentication tokens updated successfully.
二、批量分發
[root@localhost tmp]# cat fenfa.sh （撰寫腳本）
scp -r -p $1 $ip $2
[root@localhost tmp]# sh fenfa.sh /etc /tmp/（把/etc目錄拷貝到多台遠端伺服器上的/tmp下
[root@localhost tmp]# ls（驗證）
etc
三、通過普通使用者實作遠端分發檔案，遠端管理
1.建立普通使用者admin 密碼：123456
2.生成密鑰拷貝到對端
[admin@localhost ~]$ ssh-keygen -t dsa
Enter file in which to save the key (/home/admin/.ssh/id_dsa):
Created directory '/home/admin/.ssh'.
Your identification has been saved in /home/admin/.ssh/id_dsa.
Your public key has been saved in /home/admin/.ssh/id_dsa.pub.
00:1f:1c:fa:a2:e0:79:cc:a4:24:92:47:de:3e:bf:fb [email protected]
[admin@localhost .ssh]$ ssh-copy-id -i id_dsa.pub 119.147.146.245
10
[email protected]'s password:
3.撰寫腳本（和上面的一樣）
[admin@localhost ~]$ ls
fenfa.sh iplist manger.sh
4.測試
拷貝本地的/etc目錄到多台遠端伺服器的/tmp目錄下
[admin@localhost ~]$ su - root /home/admin/fenfa.sh /etc /tmp
Password: （輸入root密碼）
mime.types 100% 14KB 13.8KB/s 00:00
virc 100% 1533 1.5KB/s 00:00
.bashrc 100% 124 0.1KB/s 00:00
.bash_profile 100% 176 0.2KB/s 00:00
.bash_logout 100% 33 0.0KB/s 00:00
.zshrc 100% 658 0.6KB/s 00:00