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我是 ssh 和 mysql 命令的新手。我在使用无密码身份验证从一台 linux 服务器备份到另一台 linux 服务器时遇到问题。我已经生成了用于无密码身份验证的密钥并将其上传到另一台服务器。

我用过这个命令

[user1@server1 ~]$ mysqldump -u dbuser -p"dbpwd" --opt  dbname | gzip -c | ssh  -o StrictHostKeyChecking=no -o UserKnownHostsFile=/...../known_hosts -l deploy -i  /...../id_rsa -v  user2@server2  "/bin/cat > user2@server2:/......./test.sql.gz" 2>&1

现在，当我在 SSH 中运行命令时，出现以下错误

debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_20082' not found

debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_20082' not found

debug1: Unspecified GSS failure.  Minor code may provide more information


debug1: Unspecified GSS failure.  Minor code may provide more information


debug1: Next authentication method: publickey
debug1: Offering public key: /home/indus33/.ssh/id_rsa

我用谷歌搜索了很多，但没有解决方案对我有帮助。

如果有人对此有疑问，请经常问我。

请帮我解决这个问题。

更新

我运行命令

[user@server1 ~]$ ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/..../known_hosts -l deploy -i /..../id_rsa -v user2@server2

错误

OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010
debug1: Reading configuration data /.../ssh_config
debug1: Applying options for *
debug1: Connecting to server2IP [server2IP] port 22.
debug1: Connection established.
debug1: identity file /......./id_rsa type 1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'server2IP' is known and matches the RSA host key.
debug1: Found key in /......./known_hosts:1
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_20082' not found

debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_20082' not found

debug1: Unspecified GSS failure.  Minor code may provide more information


debug1: Unspecified GSS failure.  Minor code may provide more information


debug1: Next authentication method: publickey
debug1: Offering public key: /....../id_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug1: read PEM private key done: type RSA
debug1: Authentication succeeded (publickey).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
Last login: Mon Sep 30 03:25:52 2013 from server1
user2@server2 [~]#

希望大家都清楚这个问题......

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1 回答 1

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首先在 server2 上创建授权密钥的最佳方法

 touch /root/.ssh/authorized_keys
 chmod 600 /root/.ssh/authorized_keys

然后将 id_rsa.pub 的内容复制到服务器上

[user1@server1 ~]$ cat ~/.ssh/id_rsa.pub | ssh user2@server2 "cat >> ~/.ssh/authorized_keys"

然后在 server1 上发出以下 mysqldump 命令

[user1@server1 ~]$ mysqldump -u dbuser -p"dbpwd" --opt  dbname | gzip -c | ssh user2@server2 "/bin/cat > /your_path/test.sql.gz" 2>&
于 2013-10-01T11:57:19.090 回答