未知的\u服务器_大数据知识库

我的zookeeper客户端在连接到hadoop群集时遇到问题。
这在linux虚拟机上运行良好，但我使用的是mac。
我设置了 -Dsun.security.krb5.debug=true 在jvm上标记并获取以下输出：

Found ticket for solr@DDA.MYCO.COM to go to krbtgt/DDA.MYCO.COM@DDA.MYCO.COM expiring on Sat Apr 29 03:15:04 BST 2017
Entered Krb5Context.initSecContext with state=STATE_NEW
Found ticket for solr@DDA.MYCO.COM to go to krbtgt/DDA.MYCO.COM@DDA.MYCO.COM expiring on Sat Apr 29 03:15:04 BST 2017
Service ticket not found in the subject
>>> Credentials acquireServiceCreds: same realm
Using builtin default etypes for default_tgs_enctypes
default etypes for default_tgs_enctypes: 17 16 23.
>>> CksumType: sun.security.krb5.internal.crypto.RsaMd5CksumType
>>> EType: sun.security.krb5.internal.crypto.Aes128CtsHmacSha1EType
>>> KrbKdcReq send: kdc=oc-10-252-132-139.nat-ucfc2z3b.usdv1.mycloud.com UDP:88, timeout=30000, number of retries =3, #bytes=682
>>> KDCCommunication: kdc=oc-10-252-132-139.nat-ucfc2z3b.usdv1.mycloud.com UDP:88, timeout=30000,Attempt =1, #bytes=682
>>> KrbKdcReq send: #bytes read=217
>>> KdcAccessibility: remove oc-10-252-132-139.nat-ucfc2z3b.usdv1.mycloud.com
>>> KDCRep: init() encoding tag is 126 req type is 13
>>>KRBError:
     cTime is Thu Dec 24 11:18:15 GMT 2015 1450955895000
     sTime is Fri Apr 28 15:15:06 BST 2017 1493388906000
     suSec is 925863
     error code is 7
     error Message is Server not found in Kerberos database
     cname is solr@DDA.MYCO.COM
     sname is zookeeper/oc-10-252-132-160.nat-ucfc2z3b.usdv1.mycloud.com@DDA.MYCO.COM
     msgType is 30
KrbException: Server not found in Kerberos database (7) - UNKNOWN_SERVER
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:73)
    at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:251)
    at sun.security.krb5.KrbTgsReq.sendAndGetCreds(KrbTgsReq.java:262)
    at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:308)
    at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:126)
    at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:458)
    at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:693)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:248)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
    at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:192)
    at org.apache.zookeeper.client.ZooKeeperSaslClient$2.run(ZooKeeperSaslClient.java:366)
    at org.apache.zookeeper.client.ZooKeeperSaslClient$2.run(ZooKeeperSaslClient.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.zookeeper.client.ZooKeeperSaslClient.createSaslToken(ZooKeeperSaslClient.java:362)
    at org.apache.zookeeper.client.ZooKeeperSaslClient.createSaslToken(ZooKeeperSaslClient.java:348)
    at org.apache.zookeeper.client.ZooKeeperSaslClient.sendSaslPacket(ZooKeeperSaslClient.java:420)
    at org.apache.zookeeper.client.ZooKeeperSaslClient.initialize(ZooKeeperSaslClient.java:458)
    at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1057)
Caused by: KrbException: Identifier doesn't match expected value (906)
    at sun.security.krb5.internal.KDCRep.init(KDCRep.java:140)
    at sun.security.krb5.internal.TGSRep.init(TGSRep.java:65)
    at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:60)
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:55)
    ... 18 more
ERROR   2017-04-28 15:15:07,046 5539    org.apache.zookeeper.client.ZooKeeperSaslClient [main-SendThread(oc-10-252-132-160.nat-ucfc2z3b.usdv1.mycloud.com:2181)]    
An error: (java.security.PrivilegedActionException: javax.security.sasl.SaslException: GSS initiate failed 
[Caused by GSSException: No valid credentials provided 
(Mechanism level: Server not found in Kerberos database (7) - UNKNOWN_SERVER)]) 
occurred when evaluating Zookeeper Quorum Member's  received SASL token. 
This may be caused by Java's being unable to resolve the Zookeeper Quorum Member's hostname correctly. 
You may want to try to adding '-Dsun.net.spi.nameservice.provider.1=dns,sun' to your client's JVMFLAGS environment. 
Zookeeper Client will go to AUTH_FAILED state.

我测试了kerberos配置，如下所示：

>kinit -kt /etc/security/keytabs/solr.headless.keytab solr
>klist
Credentials cache: API:3451691D-7D5E-49FD-A27C-135816F33E4D
        Principal: solr@DDA.MYCO.COM

  Issued                Expires               Principal
Apr 28 16:58:02 2017  Apr 29 04:58:02 2017  krbtgt/DDA.MYCO.COM@DDA.MYCO.COM

按照hortonworks的指示，我成功地将kerberos票证存储在一个文件中：

>klist -c FILE:/tmp/krb5cc_501
Credentials cache: FILE:/tmp/krb5cc_501
    Principal: solr@DDA.MYCO.COM

Issued                Expires               Principal
Apr 28 17:10:25 2017  Apr 29 05:10:25 2017  krbtgt/DDA.MYCO.COM@DDA.MYCO.COM

我还尝试了堆栈跟踪中建议的jvm选项( -Dsun.net.spi.nameservice.provider.1=dns,sun )，但这导致了不同的错误 Client session timed out ，这表明这个jvm参数首先会阻止客户端正确连接。
==编辑==
似乎kerberos的mac版本不是最新的：

> krb5-config --version
Kerberos 5 release 1.7-prerelease

我只是试过了 brew install krb5 安装新版本，然后调整路径以指向新版本。

> krb5-config --version
Kerberos 5 release 1.15.1

这对结果没有任何影响。
注意：这在我的mac上的linux虚拟机上运行良好，使用完全相同的jaas.conf、keytab文件和krb5.conf。
krb5.conf格式：

[libdefaults]
renew_lifetime = 7d
forwardable = true
  default_realm = DDA.MYCO.COM
  ticket_lifetime = 24h
  dns_lookup_realm = false
  dns_lookup_kdc = false

[realms]
  DDA.MYCO.COM = {
    admin_server = oc-10-252-132-139.nat-ucfc2z3b.usdv1.mycloud.com
    kdc = oc-10-252-132-139.nat-ucfc2z3b.usdv1.mycloud.com
  }

反向dns:我检查了是否可以使用反向dns查找找到我连接的fqdn主机名：

> host 10.252.132.160
160.132.252.10.in-addr.arpa domain name pointer oc-10-252-132-160.nat-ucfc2z3b.usdv1.mycloud.com.

这与linux虚拟机对同一命令的响应完全一致。
===wireshark分析===
使用配置为使用系统键选项卡的wireshark可以在分析中提供更详细的信息。
在这里，我发现失败的调用如下所示：

client -> host  AS-REQ
host -> client  AS-REP 
client -> host  AS-REQ
host -> client  AS-REP 
client -> host TGS-REQ  <-- this call is detailed below
host -> client KRB error KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN

错误的tgs req调用显示以下内容：

Kerberos
tgs-req
    pvno: 5
    msg-type: krb-tgs-req (12)
    padata: 1 item
    req-body
        Padding: 0
        kdc-options: 40000000 (forwardable)
        realm: DDA.MYCO.COM
        sname
            name-type: kRB5-NT-UNKNOWN (0)
            sname-string: 2 items
                SNameString: zookeeper
                SNameString: oc-10-252-134-51.nat-ucfc2z3b.usdv1.mycloud.com
        till: 1970-01-01 00:00:00 (UTC)
        nonce: 797021964
        etype: 3 items
            ENCTYPE: eTYPE-AES128-CTS-HMAC-SHA1-96 (17)
            ENCTYPE: eTYPE-DES3-CBC-SHA1 (16)
            ENCTYPE: eTYPE-ARCFOUR-HMAC-MD5 (23)

下面是来自linux box的相应的成功调用，接下来是多个交换。

Kerberos
    tgs-req
        pvno: 5
        msg-type: krb-tgs-req (12)
        padata: 1 item
        req-body
            Padding: 0
            kdc-options: 40000000 (forwardable)
            realm: DDA.MYCO.COM
            sname
                name-type: kRB5-NT-UNKNOWN (0)
                sname-string: 2 items
                    SNameString: zookeeper
                    SNameString: d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com
            till: 1970-01-01 00:00:00 (UTC)
            nonce: 681936272
            etype: 3 items
                ENCTYPE: eTYPE-AES128-CTS-HMAC-SHA1-96 (17)
                ENCTYPE: eTYPE-DES3-CBC-SHA1 (16)
                ENCTYPE: eTYPE-ARCFOUR-HMAC-MD5 (23)

所以看起来客户端正在发送

oc-10-252-134-51.nat-ucfc2z3b.usdv1.mycloud.com

作为服务器主机，应在何时发送：

d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com

所以问题是，我该怎么解决这个问题？请记住，这是一段java代码。
my/etc/hosts具有以下功能：

10.252.132.160 b3e073.ddapoc.ucfc2z3b.usdv1.mycloud.com
10.252.134.51  d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com
10.252.132.139 d7cc18.ddapoc.ucfc2z3b.usdv1.mycloud.com

我的krb5.conf文件有：

kdc = d7cc18.ddapoc.ucfc2z3b.usdv1.mycloud.com
kdc = b3e073.ddapoc.ucfc2z3b.usdv1.mycloud.com
kdc = d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com

我试着添加 -Dsun.net.spi.nameservice.provider.1=file,dns 但是得到了相同的结果。

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