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linux - 共享 NFS 主目录上的无密码 ssh 不起作用 (centos 7)

转载 作者：塔克拉玛干 更新时间：2023-11-03 01:44:03 24 4
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我有一个包含 7 个节点的集群(所有 Centos 7 操作系统)。主节点为maercher5，其余为从节点。我需要在主节点上设置无密码 ssh 到从节点以运行 MPI 程序。主目录由 NFS 从主节点共享到所有从节点。我跟着这个tutorial执行从主节点到从节点的无密码 ssh。我在所有机器上都有相同的 UID 和 GID。由于所有节点上只有 1 个 ssh 文件夹共享。 ssh 文件夹的权限是:

$ ls -al  $HOME/.ssh
total 28
drwx------.  2 sarah sarah    76 Apr 16 21:17 .
drwx------. 17 sarah sarah  4096 Apr 17 13:51 ..
-rw-------.  1 sarah sarah 11895 Apr 16 21:17 authorized_keys
-rw-------.  1 sarah sarah  1679 Apr  3 00:55 id_rsa
-rw-r--r--.  1 sarah sarah   411 Apr 10 14:24 id_rsa.pub
-rw-------.  1 sarah sarah  2265 Apr 10 13:58 known_hosts

节点之间可以很好地相互ping通。 Marcher5为主节点。

[sarah@marcher5]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.250.15  marcher5.cs.txstate.edu marcher5
192.168.250.17  marcher7.cs.txstate.edu marcher7
192.168.250.18  marcher8.cs.txstate.edu marcher8
192.168.250.19  marcher9.cs.txstate.edu marcher9
192.168.250.20  marcher10.cs.txstate.edu marcher10
192.168.250.21  marcher11.cs.txstate.edu marcher11
192.168.250.22  marcher12.cs.txstate.edu marcher12

在所有slave节点上，NFS Mount如下:

[sarah@marcher11 ~]$ cat /etc/fstab

/dev/mapper/centos-root /                       xfs     defaults        1 1
UUID=79c2716b-9099-4731-82cc-094ca26eb837 /boot                   xfs     defaults        1 2
#/dev/mapper/centos-home /home                   xfs     defaults        1 2
/dev/mapper/centos-swap swap                    swap    defaults        0 0
marcher5:/home/sge_users /home/sge_users nfs soft,intr,bg,nosuid,timeo=20,retrans=10,async,wsize=8192,rsize=8192  0 0

[sarah@marcher11 ~]$ mount |grep home
    /dev/mapper/centos-home on /home type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
    marcher5:/home/sge_users on /home/sge_users type nfs4 (rw,nosuid,relatime,vers=4.0,rsize=8192,wsize=8192,namlen=255,soft,proto=tcp,port=0,timeo=20,retrans=10,sec=sys,clientaddr=192.168.250.21,local_lock=none,addr=192.168.250.15)

问题是无密码 ssh 不起作用。

[sarah@marcher5 mpi2007]$ ssh -v marcher11
OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 56: Applying options for *
debug1: Connecting to marcher11 [192.168.250.21] port 22.
debug1: Connection established.
debug1: identity file /home/sge_users/sarah/.ssh/id_rsa type 1
debug1: identity file /home/sge_users/sarah/.ssh/id_rsa-cert type -1
debug1: identity file /home/sge_users/sarah/.ssh/id_dsa type -1
debug1: identity file /home/sge_users/sarah/.ssh/id_dsa-cert type -1
debug1: identity file /home/sge_users/sarah/.ssh/id_ecdsa type -1
debug1: identity file /home/sge_users/sarah/.ssh/id_ecdsa-cert type -1                                                           [29/1894]
debug1: identity file /home/sge_users/sarah/.ssh/id_ed25519 type -1
debug1: identity file /home/sge_users/sarah/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5-etm@openssh.com none
debug1: kex: client->server aes128-ctr hmac-md5-etm@openssh.com none
debug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16
debug1: kex: curve25519-sha256@libssh.org need=16 dh_need=16
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 80:81:97:62:dd:9b:fc:e2:76:bc:13:ce:30:07:79:49
debug1: Host 'marcher11' is known and matches the ECDSA host key.
debug1: Found key in /home/sge_users/sarah/.ssh/known_hosts:5
debug1: ssh_ecdsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
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
debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

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


debug1: Unspecified GSS failure.  Minor code may provide more information
No Kerberos credentials available

debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/sge_users/sarah/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: /home/sge_users/sarah/.ssh/id_dsa
debug1: Trying private key: /home/sge_users/sarah/.ssh/id_ecdsa
debug1: Trying private key: /home/sge_users/sarah/.ssh/id_ed25519
debug1: Next authentication method: password
sarah@marcher11's password:
debug1: Authentication succeeded (password).
Authenticated to marcher11 ([192.168.250.21]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LC_ALL = C
debug1: Sending env LANG = en_US.UTF-8

我已经被这个问题关了一个多月了，如果有任何帮助，我们将不胜感激。我尝试从 root@master 到 root@slave 执行此操作并且它有效。

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