Kafka and Zookeeper cluster construction

192.168.2.104 service01
192.168.2.100 service02
192.168.2.105 service03

[root@service01 ~]# ls /root/.ssh/
authorized_keys  id_rsa  id_rsa.pub  known_hosts
//删除原有文件
[root@service01 ~]# rm -rf /root/.ssh
/生成rsa密钥文件
[root@service01 ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:2cCjwHxLuWpwjQNN6/YAK7HSx7FeSFNo69b0krZ49D8 root@service01
The key's randomart image is:
+---[RSA 2048]----+
|    ...          |
|   =oo o         |
|. o.X.+ +        |
| + B.@.+ =       |
|+ +.%o*oS .      |
|.. *o** .        |
|   .++.+         |
|   .. o . E      |
|     .   ...     |
+----[SHA256]-----+
//查看是否生成了密钥文件
[root@service01 ~]# ls /root/.ssh
authorized_keys  id_rsa  id_rsa.pub  known_hosts
//向主机一发送密钥文件
[root@service01 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub service01
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host 'service01 (192.168.2.104)' can't be established.
ECDSA key fingerprint is SHA256:3ovF0ttLqSQEZclZo65MxpN/GhHSWLUcgbcbcqEON1U.
ECDSA key fingerprint is MD5:b4:9a:db:5e:44:9f:31:7b:6e:91:0e:0c:b4:ff:30:2f.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@service01's password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'service01'"
and check to make sure that only the key(s) you wanted were added.

[root@service01 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub service02
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host 'service02 (192.168.2.100)' can't be established.
ECDSA key fingerprint is SHA256:3ovF0ttLqSQEZclZo65MxpN/GhHSWLUcgbcbcqEON1U.
ECDSA key fingerprint is MD5:b4:9a:db:5e:44:9f:31:7b:6e:91:0e:0c:b4:ff:30:2f.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@service02's password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'service02'"
and check to make sure that only the key(s) you wanted were added.

[root@service01 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub service03
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host 'service03 (192.168.2.105)' can't be established.
ECDSA key fingerprint is SHA256:3ovF0ttLqSQEZclZo65MxpN/GhHSWLUcgbcbcqEON1U.
ECDSA key fingerprint is MD5:b4:9a:db:5e:44:9f:31:7b:6e:91:0e:0c:b4:ff:30:2f.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@service03's password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'service03'"
and check to make sure that only the key(s) you wanted were added.

//检查三个主机的密钥信息是否已经全部同步

[root@service01 ~]#  cat /root/.ssh/authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC6x1LuXZQhziJBkppjFVOjawG7MjY7W/F5UKVa2G6fsT2sqYfEgAcYFemmpC9cM/P0bBeMF0NDjyCjZGiHHhB1rXox3Ott6Dp/+6AoZt4rj4NBgiddLkfIyJxaJDjzXV7nIBOLPpYF/wAQGgQ37p8C52ffILyRGZqXZKC3RH5CMI8RaHraDl57dkRksdMQFbZbl/9vDZALSPdMkjiD/OEcov4nEknTMG4da05MHU2Ny1wgzWP+728yc4L8boZ07q5Rn+1CQCTm0sQ1X6twN9wMXD3vvb96USJlvXyHHrR573A2st3zQKDcNSPr563ODzp7GYh0Kyd4GlBnh7KgWYp9 root@service03
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCuFQ/re/rOpU7OSK5cCBk94Vqqt/UAeLbM+K4H4w6mKH4TJoRUCCa2e7GSc/J1jucKt8S6K2hsYVZjVulQiNEl6RSGkk13oQBm8CHXDElrp7vQSBK19n1t71NaL4YQdEtyXVQbNf73BtlNH6k1sEkb5YtC00g++fUzZgKseyKTKLn52+cQhWxRXBvh1rqKb0B+s3QgYxswy87FEcpqP9e0A/NhqC4ypxad1x7q+/ipmTWnvTQSN8q/h196x6VyupNkLMlKoHBKamNLeU2SR7ooPDJNLxPYRPUhNJBRgbyP1FodOhrEY7wUOPg0xJXhox5R3auNxgUaS/Hi/h7dqE6B root@service01
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyYUBSxjPI7QXS3huOdBpOOWahT21vGI6dmh2f1bckODwcDbxiDBcP5L3x1OIwqMI99+Z+QPli+6PnCwaWqJCvEuQPTbWh//SVUIxdE3AXHcTpQ40pgZF35sewGV7+AlVLwnGadqS+1b5jb2+P/ebZ37sv/IqMBihWtCfT41bKyGa0zegCkQQai8Hk4fUuc/641By2KndDuXfTOAp+ULqf/hwzt9EVqGN4q2oYFCMDmkByqNJC7HLsvrUSpljg/ReOjJegBFrFbmXlSb0ZXMrKnhZk0/5V/HFaFWESdCGA+2ouxAKBzp7Jy15FMZu1iPk60V52Kg7XyDccTEh6whxz root@service02