Hadoop用戶配置ssh免密登錄

一般生產(chǎn)環(huán)境 Hadoop組件都是由hadoop用戶來啟動(dòng)，首先需要配置hadoop用戶ssh免密登錄

目前成都創(chuàng)新互聯(lián)公司已為1000多家的企業(yè)提供了網(wǎng)站建設(shè)、域名、網(wǎng)頁(yè)空間、網(wǎng)站改版維護(hù)、企業(yè)網(wǎng)站設(shè)計(jì)、白銀區(qū)網(wǎng)站維護(hù)等服務(wù)，公司將堅(jiān)持客戶導(dǎo)向、應(yīng)用為本的策略，正道將秉承"和諧、參與、激情"的文化，與客戶和合作伙伴齊心協(xié)力一起成長(zhǎng)，共同發(fā)展。

1.創(chuàng)建Hadoop用戶

[root@hadoop000 ~]# useradd hadoop
[root@hadoop000 ~]# id hadoop
uid=1102(hadoop) gid=1102(hadoop) groups=1102(hadoop)
[root@hadoop000 ~]# passwd hadoop
Changing password for user hadoop.
New password: 
BAD PASSWORD: it is too simplistic/systematic
BAD PASSWORD: is too simple
Retype new password: 
passwd: all authentication tokens updated successfully.
#給hadoop sudo權(quán)限
[root@hadoop000 ~]# vi /etc/sudoers
hadoop ALL=(root) NOPASSWD:ALL

2.切換到hadoop用戶 配置免密登錄

[root@hadoop000 ~]# su - hadoop
#確保有ssh服務(wù)
[hadoop@hadoop000 ~]$ sudo service sshd status
openssh-daemon (pid  24823) is running...
[hadoop@hadoop000 ~]$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hadoop/.ssh/id_rsa): 
Created directory '/home/hadoop/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/hadoop/.ssh/id_rsa.
Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
The key fingerprint is:
bd:75:87:ca:44:2d:1f:de:b7:5e:a0:96:ac:b3:7e:01 hadoop@hadoop000
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|             .   |
|            o o  |
|         .E. + + |
|        S ..o * +|
|           *.= oo|
|          . B. ..|
|          .o. . .|
|         .++   . |
+-----------------+
[hadoop@hadoop000 ~]$ cd .ssh
[hadoop@hadoop000 .ssh]$ ll
total 8
-rw------- 1 hadoop hadoop 1675 May 17 14:59 id_rsa
-rw-r--r-- 1 hadoop hadoop  395 May 17 14:59 id_rsa.pub
[hadoop@hadoop000 .ssh]$ cat id_rsa.pub >> authorized_keys
[hadoop@hadoop000 .ssh]$ ll
total 12
-rw-rw-r-- 1 hadoop hadoop  395 May 17 14:59 authorized_keys
-rw------- 1 hadoop hadoop 1675 May 17 14:59 id_rsa
-rw-r--r-- 1 hadoop hadoop  395 May 17 14:59 id_rsa.pub
#authorized_keys權(quán)限必須為600
[hadoop@hadoop000 .ssh]$ chmod 600 authorized_keys
[hadoop@hadoop000 .ssh]$ ssh hadoop000 date
The authenticity of host 'hadoop000 (192.168.6.217)' can't be established.
RSA key fingerprint is 25:d9:d6:7e:fa:e0:a7:92:7c:06:76:5c:2b:19:bf:a3.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'hadoop000,192.168.6.217' (RSA) to the list of known hosts.
Thu May 17 15:00:28 CST 2018
[hadoop@hadoop000 .ssh]$ ssh hadoop000 date
Thu May 17 15:00:30 CST 2018

3.總結(jié)

hadoop用戶配置ssh免密登錄 authorized_keys權(quán)限必須改為600

新聞標(biāo)題：Hadoop用戶配置ssh免密登錄
本文路徑：http://www.jbt999.com/article32/jisjsc.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供網(wǎng)站改版、營(yíng)銷型網(wǎng)站建設(shè)、網(wǎng)站設(shè)計(jì)、域名注冊(cè)、響應(yīng)式網(wǎng)站、品牌網(wǎng)站設(shè)計(jì)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：[email protected]。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來源： 創(chuàng)新互聯(lián)