質問編集履歴
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一部修正
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```lang
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/usr/lib/ssh-command/find_key.sh username
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ssh-rsa AAAA*********･･･
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```
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```
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ご質問頂いた情報を追記させて頂きました。
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sshd[25802]: Failed password for [USER_NAME] from 172.31.24.39 port 60385 ssh2
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```
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宜しくお願いします。
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宜しくお願いします。
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ーーー追記ーーーー
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ldapのバージョン：2.4.40
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◆SSH公開鍵の登録方法
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※ldifファイルに記述
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/etc/ldap/ldif/user.ldif
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```lang-user.ldif
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dn: uid=username,ou=User,dc=example,dc=co,dc=jp
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objectClass: shadowAccount
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objectClass: posixAccount
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objectClass: account
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objectClass: top
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objectCkass: ldapPublicKey
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cn: username
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uid: username
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uidNumber: 2001
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gidNumber: 2000
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homeDirectory: /home/username
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loginShell: /bin/bash
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shadowMin: 0
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shadowMax: 99999
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shadowWarning: 7
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shadowLastChange: 16175
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userPassword: {SSHA}*************************************
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sshPublicKey: ssh-rsa AAAA**********************************
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```
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※openssh-lpkスキーマの追加
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/etc/ldap/ldif/openssh-lpk.ldif
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```lang
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dn: cn=openssh-lpk,cn=schema,cn=config
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objectClass: olcSchemaConfig
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cn: openssh-lpk
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olcAttributeTypes: ( 1.3.6.1.4.1.24552.500.1.1.1.13 NAME 'sshPublicKey'
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DESC 'MANDATORY: OpenSSH Public key'
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EQUALITY octetStringMatch
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SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )
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olcObjectClasses: ( 1.3.6.1.4.1.24552.500.1.1.2.0 NAME 'ldapPublicKey' SUP top AUXILIARY
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DESC 'MANDATORY: OpenSSH LPK objectclass'
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MAY ( sshPublicKey $ uid )
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)
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```
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ldappサーバーから公開鍵を取得する設定（クライアント側）
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・AuthorizedKeysCommandを使用
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/etc/ssh/sshd_config
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```lang
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AuthorizedKeysCommand /usr/lib/ssh-command/find_key.sh
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AuthorizedKeysCommandUser root
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```
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/usr/lib/ssh-command/find_key.sh
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```lang
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#!/bin/bash
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uri=ldap://10.0.XXX.XXX/
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binddn="cn=admin,dc=example,dc=co,dc=jp"
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bindpw=******
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base="dc=example,dc=co,dc=jp"
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uid=$1
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ldapsearch -LLL -H ${uri} -w "${bindpw}" -D "${binddn}" -b "${base}" "(& (objectClass=posixAccount) (uid=${uid}))" "sshPublicKey" | ruby -e 'puts STDIN.read.gsub(/\n /,"").match(/sshPublicKey: (.+)/).to_a[1]'
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```
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※クライアント側から上記/usr/lib/ssh-command/find_key.shに引数ユーザー名を渡して実行した結果、公開鍵情報は取得できています。
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```lang
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89
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/usr/lib/ssh-command/find_key.sh username
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90
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ssh-rsa AAAA*********･･･
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91
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```l
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