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OpenSSH + Kerberos SSO 問題：請求中的主體錯誤
感謝您的幫助，我越來越近了。現在，通過 ssh 登錄，我收到以下消息：
debug1: Unspecified GSS failure. Minor code may provide more information Wrong principal in request從客戶端，在我請求一張票後，我可以在 KDC 日誌中確認它正在生成
Sep 27 00:37:11 kerberos.monzell.com krb5kdc[6060](info): TGS_REQ (1 etypes {18}) 192.168.15.37: ISSUE: authtime 1317097291, etypes {rep=18 tkt=18 ses=18}, foster@MONZELL.COM for krbtgt/MONZELL.COM@MONZELL.COM並從 klist 中：
foster@kvm0007 ~]$ klist -f Ticket cache: FILE:/tmp/krb5cc_502 Default principal: foster@MONZELL.COM Valid starting Expires Service principal 09/27/11 00:21:31 09/28/11 00:21:31 krbtgt/MONZELL.COM@MONZELL.COM renew until 09/27/11 00:21:31, Flags: FRI 09/27/11 00:21:56 09/28/11 00:21:31 host/kerberos.monzell.com@MONZELL.COM renew until 09/27/11 00:21:31, Flags: FRT [foster@kvm0007 ~]$我從以下內容開始：
ssh -p222 -K -lfoster kerberos.monzell.com -vvv從伺服器端，我在這裡設置了一個調試：
/usr/sbin/sshd -d -D -f sshd_config這是來自客戶端的完整調試：
[foster@kvm0007 ~]$ ssh -p222 -K -lfoster kerberos.monzell.com -vvv OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010 debug1: Reading configuration data /home/users/foster/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to kerberos.monzell.com [192.168.15.100] port 222. debug1: Connection established. debug1: identity file /home/users/foster/.ssh/identity type -1 debug1: identity file /home/users/foster/.ssh/id_rsa type -1 debug3: Not a RSA1 key file /home/users/foster/.ssh/id_dsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/users/foster/.ssh/id_dsa type 2 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 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug3: Wrote 792 bytes for a total of 813 debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com debug2: kex_parse_kexinit: none,zlib@openssh.com debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: server->client aes128-ctr hmac-md5 none debug2: mac_setup: found hmac-md5 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 debug3: Wrote 24 bytes for a total of 837 debug2: dh_gen_key: priv key bits set: 136/256 debug2: bits set: 536/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug3: Wrote 144 bytes for a total of 981 debug3: put_host_port: [192.168.15.100]:222 debug3: put_host_port: [kerberos.monzell.com]:222 debug3: check_host_in_hostfile: filename /home/users/foster/.ssh/known_hosts debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts debug3: check_host_in_hostfile: filename /home/users/foster/.ssh/known_hosts debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts debug1: checking without port identifier debug3: check_host_in_hostfile: filename /home/users/foster/.ssh/known_hosts debug3: check_host_in_hostfile: match line 1 debug3: check_host_in_hostfile: filename /home/users/foster/.ssh/known_hosts debug3: check_host_in_hostfile: match line 1 debug1: Host 'kerberos.monzell.com' is known and matches the RSA host key. debug1: Found key in /home/users/foster/.ssh/known_hosts:1 debug1: found matching key w/out port debug2: bits set: 519/1024 debug1: ssh_rsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: Wrote 16 bytes for a total of 997 debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug3: Wrote 48 bytes for a total of 1045 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/users/foster/.ssh/identity ((nil)) debug2: key: /home/users/foster/.ssh/id_rsa ((nil)) debug2: key: /home/users/foster/.ssh/id_dsa (0x7f23d128dd10) debug3: Wrote 64 bytes for a total of 1109 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic,password debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_lookup gssapi-with-mic debug3: remaining preferred: publickey,keyboard-interactive,password debug3: authmethod_is_enabled gssapi-with-mic debug1: Next authentication method: gssapi-with-mic debug3: Trying to reverse map address 192.168.15.100. debug2: we sent a gssapi-with-mic packet, wait for reply debug3: Wrote 96 bytes for a total of 1205 debug1: Delegating credentials debug3: Wrote 1392 bytes for a total of 2597 debug1: Delegating credentials debug1: Unspecified GSS failure. Minor code may provide more information Generic error (see e-text) debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug2: we sent a gssapi-with-mic packet, wait for reply debug3: Wrote 96 bytes for a total of 2693 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug2: we sent a gssapi-with-mic packet, wait for reply debug3: Wrote 96 bytes for a total of 2789 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug2: we sent a gssapi-with-mic packet, wait for reply debug3: Wrote 96 bytes for a total of 2885 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug2: we did not send a packet, disable method debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Trying private key: /home/users/foster/.ssh/identity debug3: no such identity: /home/users/foster/.ssh/identity debug1: Trying private key: /home/users/foster/.ssh/id_rsa debug3: no such identity: /home/users/foster/.ssh/id_rsa debug1: Offering public key: /home/users/foster/.ssh/id_dsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug3: Wrote 528 bytes for a total of 3413 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password foster@kerberos.monzell.com's password:從伺服器端：
[root@kerberos ~]# /usr/sbin/sshd -d -D -f sshd_config debug1: sshd version OpenSSH_5.3p1 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-d' debug1: rexec_argv[2]='-D' debug1: rexec_argv[3]='-f' debug1: rexec_argv[4]='sshd_config' debug1: Bind to port 222 on 0.0.0.0. Server listening on 0.0.0.0 port 222. debug1: Bind to port 222 on ::. Server listening on :: port 222. debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 Connection from 192.168.15.37 port 35193 debug1: Client protocol version 2.0; client 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: permanently_set_uid: 74/74 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr hmac-md5 none debug1: kex: server->client aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user foster service ssh-connection method none debug1: attempt 0 failures 0 debug1: PAM: initializing for "foster" debug1: PAM: setting PAM_RHOST to "kvm0007.monzell.com" debug1: PAM: setting PAM_TTY to "ssh" debug1: userauth-request for user foster service ssh-connection method gssapi-with-mic debug1: attempt 1 failures 0 Postponed gssapi-with-mic for foster from 192.168.15.37 port 35193 ssh2 debug1: Unspecified GSS failure. Minor code may provide more information Wrong principal in request debug1: Got no client credentials debug1: userauth-request for user foster service ssh-connection method gssapi-with-mic debug1: attempt 2 failures 1 debug1: userauth-request for user foster service ssh-connection method gssapi-with-mic debug1: attempt 3 failures 1 debug1: userauth-request for user foster service ssh-connection method gssapi-with-mic debug1: attempt 4 failures 1 debug1: userauth-request for user foster service ssh-connection method publickey debug1: attempt 5 failures 1 debug1: test whether pkalg/pkblob are acceptable debug1: temporarily_use_uid: 502/502 (e=0/0) debug1: trying public key file /home/users/foster/.ssh/authorized_keys debug1: restore_uid: 0/0 debug1: temporarily_use_uid: 502/502 (e=0/0) debug1: trying public key file /home/users/foster/.ssh/authorized_keys2 debug1: restore_uid: 0/0 Failed publickey for foster from 192.168.15.37 port 35193 ssh2校長名單：
[root@kerberos ~]# kadmin.local Authenticating as principal rilindo/admin@MONZELL.COM with password. kadmin.local: listprincs K/M@MONZELL.COM foster@MONZELL.COM host/kerberos.monzell.com@MONZELL.COM host/kvm0007.monzell.com@MONZELL.COM joe@MONZELL.COM kadmin/admin@MONZELL.COM kadmin/changepw@MONZELL.COM kadmin/sl6@MONZELL.COM krbtgt/MONZELL.COM@MONZELL.COM monzell@MONZELL.COM rilindo/admin@MONZELL.COM rilindo@MONZELL.COM這是來自客戶端的鍵選項卡的輸出：
[root@kvm0007 ~]# klist -k /etc/krb5.keytab Keytab name: WRFILE:/etc/krb5.keytab KVNO Principal ---- -------------------------------------------------------------------------- 2 host/kvm0007.monzell.com@MONZELL.COM 2 host/kvm0007.monzell.com@MONZELL.COM 2 host/kvm0007.monzell.com@MONZELL.COM 2 host/kvm0007.monzell.com@MONZELL.COM和伺服器：
[root@kerberos ~]# klist -k /etc/krb5.keytab Keytab name: WRFILE:/etc/krb5.keytab KVNO Principal ---- -------------------------------------------------------------------------- 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM 2 host/kerberos.monzell.com@MONZELL.COM和krb5kdc.conf（在客戶端和伺服器上都一樣）。
[root@kvm0007 ~]# cat /etc/krb5.conf [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind.log [libdefaults] default_realm = MONZELL.COM dns_lookup_realm = false dns_lookup_kdc = false ticket_lifetime = 24h renew_lifetime = 7d forwardable = true [realms] MONZELL.COM = { kdc = kerberos.monzell.com admin_server = kerberos.monzell.com default_domain = monzell.com } [domain_realm] .monzell.com = MONZELL.COM monzell.com = MONZELL.COM出於某種原因，我想說這仍然是某種主機名問題，但目前我不能肯定地說。
編輯：getprinc 的輸出：
root@kerberos ~]# kadmin -q "getprinc host/kerberos.monzell.com" Authenticating as principal rilindo/admin@MONZELL.COM with password. Password for rilindo/admin@MONZELL.COM: Principal: host/kerberos.monzell.com@MONZELL.COM Expiration date: [never] Last password change: Sun Sep 25 16:34:01 EDT 2011 Password expiration date: [none] Maximum ticket life: 1 day 00:00:00 Maximum renewable life: 0 days 00:00:00 Last modified: Sun Sep 25 16:34:01 EDT 2011 (root/admin@MONZELL.COM) Last successful authentication: [never] Last failed authentication: [never] Failed password attempts: 0 Number of keys: 4 Key: vno 2, aes256-cts-hmac-sha1-96, no salt Key: vno 2, aes128-cts-hmac-sha1-96, no salt Key: vno 2, des3-cbc-sha1, no salt Key: vno 2, arcfour-hmac, no salt MKey: vno 1 Attributes: Policy: hosts主機名命令的輸出：
[root@kerberos ~]# hostname -f kerberos.monzell.com kerberos.monzell.com [root@kerberos ~]#
在對這個連結（我從這個連結開始）和這個連結進行了非常仔細的比較之後，結果發現主機主要策略是錯誤的。
我添加的主體如下：
addpol hosts addprinc -randkey -policy hosts host/kvm0007.monzell.com當它真的顯然應該是：
addpol host addpinc -randkey -policy host host/kvm0007.monzell.com我去刪除所有主機主體，然後刪除策略，然後重新制定策略並重新添加主體（同時重做關鍵選項卡）。現在我的 SSO 工作了，至少從 kvm007 到 kerberos。現在為其他客戶。:P