ssh 密鑰生成並復制 ssh 密鑰到其他機器

Question

我正在運行以下腳本來生成 ssh 密鑰並將其復制到集群中的其他計算機，以實現無密碼 ssh。

#!/bin/bash    
#create host and password file
echo enter host-name,password in "host pass" format:
read hopa
echo "$hopa"> /root/host1.txt
sed -i 's/,/\n/g' /root/host1.txt
# SSH Key
#echo -en "y" | ssh-keygen -f id_rsa -t rsa -N ''
# Passwordless ssh
echo -en "y" | ssh-keygen -f id_rsa -t rsa -N ''
    declare -A hp
    while IFS=' ' read -r host pass
do
        hp["$host"]="$pass"
    done < /root/host1.txt
   for host in "${!hp[@]}"
    do
        pass="${hp["$host"]}"
        sshpass -p "${pass[i]}" ssh-copy-id -i id_rsa -o "StrictHostKeyChecking no" -f root@"${host[i]}" -p 22
    done

當提示輸入主機名及其密碼時：我的輸入：

cephadmin 1234，ceph2 1234，ceph3 1234，cephclient 1234

Output：

The key fingerprint is:
    SHA256://CzhoYLtmVVRWoJTKfTkJV9BQbeKypzGoXBLV62KKw root@cephadmin
    The key's randomart image is:
    +---[RSA 3072]----+
    |         o+o+==.o|
    |       . .oB.*. .|
    |        + * B .. |
    |     . . B =   . |
    |      o S + . .  |
    |     . . + . .   |
    |    E o *.=.     |
    |     . =.*o+o    |
    |      . oo .+o   |
    +----[SHA256]-----+
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh -o 'StrictHostKeyChecking no' -p '22' 'root@cephadmin'"
    and check to make sure that only the key(s) you wanted were added.
    
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh -o 'StrictHostKeyChecking no' -p '22' 'root@ceph2'"
    and check to make sure that only the key(s) you wanted were added.
    
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh -o 'StrictHostKeyChecking no' -p '22' 'root@ceph3'"
    and check to make sure that only the key(s) you wanted were added.
    
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
    
    Number of key(s) added: 1
    
    Now try logging into the machine, with:   "ssh -o 'StrictHostKeyChecking no' -p '22' 'root@cephclient'"
    and check to make sure that only the key(s) you wanted were added.
    

當我嘗試使用 ssh cephclient 登錄 cephclient 機器時，系統提示我輸入密碼

[root@localhost ~]# ssh cephclient
    root@cephclient's password:

如何確保我的腳本正常運行並獲得所需的 output，即無需密碼即可登錄其他機器？

Answer 1

第一次它會詢問密碼。 從第二次開始，它不會詢問密碼。