59. 脚本：ssh免密批量分发文件

7. ssh免密钥批量分发文件专业脚本

有3台机器（m01，backup，nfs01），采用ssh免密钥实现从m01到其他两台机器无密码登录后，请写脚本实现从m01批量分发任意文件到其他两台机器的任意目录下

思路分析

1.生成密钥
ssh-keygen

2.分发密钥
ssh-copy-id -i id_rsa.pub 10.0.0.8
ssh-copy-id -i id_rsa.pub 10.0.0.41

3.测试
ssh 10.0.0.8  free -m
ssh 10.0.0.41 free -m

测试脚本

vim ssh_test.sh
#!/bin/bash
if [ $# -ne 1 ];then
    echo "usage: $0 cmd"
    exit 1
fi

for n in 8 41
do
    echo "-----------10.0.0.$n--------------"
    ssh 10.0.0.$n $1
done

bash ssh_test.sh "df -h"

分发文件脚本

#!/bin/bash
for n in 8 41
do
    echo "-----------10.0.0.$n---------"
    scp -rp /oldboy 10.0.0.$n:/opt
done

改造

#!/bin/bash
if [ $# -ne 2 ];then
    echo "usage:$0 localdir remotedir"
    exit 1
fi

for n in 8 41
do
    echo "-----10.0.0.$n--------"
    scp -rp $1 10.0.0.$n:$2
done

优化

#!/bin/bash
. /etc/init.d/functions
if [ $# -ne 2 ];then
    echo "usage:$0 localdir remotedir"
    exit 1
fi

for n in 8 41 42 43
do
    scp -rp $1 10.0.0.$n:$2 &>/dev/null
    if [ $? -eq 0 ];then
        action "10.0.0.$n is ok" /bin/true
    else
        action "10.0.0.$n is fail" /bin/false
    fi
done

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最后更新: 2022-02-19 13:59:07