環境準備(01)起動後にsshdを自動的に実行するcentos 6を作成する.8容器
4879 ワード
概要
開発環境はWindows 10を使用しており、Hadoopの学習にはLinuxの環境が必要であるため、DockerでCentOSコンテナを実行し、このコンテナの中でHadoop学習環境の構築を徐々に改善している.
1.公式centosの実行:6.8ミラーリング
PS D:\dockerfile> docker run -it --name centos-ssh -h centos-ssh centos:6.8 /bin/bash
2.Openssh-serverのインストール
[root@centos-ssh /]# yum -y install openssh-server
3.sshdを起動するための2つの鍵を生成する
[root@centos-ssh /]# ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /etc/ssh/ssh_host_rsa_key.
Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub.
The key fingerprint is:
47:63:a5:5b:66:85:28:ab:35:cd:82:60:47:38:1c:d6 root@centos-ssh
The key's randomart image is:
+--[ RSA 2048]----+
| .o=. .... |
| .* E . .o.. |
| . + . == + |
| . =oo* |
| oSoo |
| . . |
| |
| |
| |
+-----------------+
[root@centos-ssh /]# ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
Generating public/private dsa key pair.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /etc/ssh/ssh_host_dsa_key.
Your public key has been saved in /etc/ssh/ssh_host_dsa_key.pub.
The key fingerprint is:
a4:6c:ab:0f:64:c2:a7:01:e5:7b:e8:89:bc:2f:02:b9 root@centos-ssh
The key's randomart image is:
+--[ DSA 1024]----+
| . |
| o |
|. . . |
| o o . o |
| .* = + S |
|+o X . . |
|oo+ . . |
|E.. o |
|..o.... |
+-----------------+
4.コンテナのrootパスワードの設定
[root@centos-ssh /]# echo "root:111111"|chpasswd
5.sshdサービスの起動
[root@centos-ssh /]# /usr/sbin/sshd
[root@centos-ssh /]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 98/sshd
tcp 0 0 :::22
6.容器centos-sshを終了する
[root@centos-ssh /]# exit
exit
7.コンテナcentos-sshを新しいミラーhadoop 001に再commitする
PS D:\dockerfile> docker commit centos-ssh hadoop001
sha256:21d4598b1d068c5d73ee93a9f160cdafc4aad803025a722472cd9bf775ed3004
PS D:\dockerfile> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hadoop001 latest 21d4598b1d06 8 seconds ago 281MB
nginx latest cd5239a0906a 4 weeks ago 109MB
centos latest 49f7960eb7e4 4 weeks ago 200MB
rabbitmq 3.7.5-management c51d1c73d028 8 weeks ago 149MB
mysql/mysql-server 5.7 3cc9613ef3ba 2 months ago 244MB
centos 6.8 6704d778b3ba 8 months ago 195MB
centos 7.4.1708 3afd47092a0e 8 months ago 197MB
mysql 5.6.35 a0f5d7301767 15 months ago 329MB
8.ミラーhadoop 001をコンテナhadoop 001として実行
PS D:\dockerfile> docker run -itd --name hadoop001 -h hadoop001 -p 9010:22 hadoop001 /usr/sbin/sshd -D
280146223e2ee93bc3393d17f19880c877f0b4f47439bfb28edadcd8d23846de
PS D:\dockerfile> docker exec -it hadoop001 /bin/bash
[root@hadoop001 /]#
[root@hadoop001 /]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1/sshd
tcp 0 0 :::22
[root@hadoop001 /]# exit
exit
9.ホストから接続
PS D:\dockerfile> ssh root@localhost -p 9010
The authenticity of host '[localhost]:9010 ([::1]:9010)' can't be established.
RSA key fingerprint is SHA256:xcND608ckilJni8LV7ClloBcwT860z8Ko6nhUpRUpYI.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '[localhost]:9010' (RSA) to the list of known hosts.
root@localhost's password:
[root@hadoop001 ~]#