我的Zookeeper客户端无法连接到Hadoop群集。
这可以从Linux VM中正常工作，但我使用的是Mac。
我在JVM上设置-Dsun.security.krb5.debug=true标志并获得以下输出：
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.
我已按如下方式测试了Kerberos配置：
>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
按照说明from hortonworks我设法将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
此外，我尝试了堆栈跟踪（-Dsun.net.spi.nameservice.provider.1=dns,sun）中建议的建议JVM选项，但这导致了Client session timed out行的不同错误，这表明此JVM参数阻止了客户端从一开始就正确连接。
== EDIT ==
似乎Mac版的Kerberos不是最新的：
> krb5-config --version
Kerberos 5 release 1.7-prerelease
我刚尝试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，这可以在Mac上的Linux VM上运行，使用完全相同的jaas.conf，keytab文件和krb5.conf。
的krb5.conf：
[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： 我检查了我正在连接的FQDN主机名是否可以使用反向DNS查找找到：
> 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.
这完全符合来自linux VM的相同命令的响应。
=== WIRESHARK ANALYSIS ===
使用配置为使用系统密钥选项卡的Wireshark可以在分析中提供更多细节。
在这里，我发现失败的呼叫如下所示：
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)
以下是来自linux框的相应成功调用，随后是几个交换。
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，应该发送：
d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com
所以问题是，我该如何解决这个问题？请记住，这是一段Java代码。
我的/ etc / hosts有以下内容：
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
我尝试将-Dsun.net.spi.nameservice.provider.1=file,dns添加为JVM参数，但结果相同。
答案 0 :(得分：2)
我通过设置本地dnsmasq实例来解决此问题，以提供正向和反向DNS查找。
现在从命令行开始，host d59407.ddapoc.ucfc2z3b.usdv1.mycloud.com返回10.252.134.51
答案 1 :(得分：0)
看起来像是一些DNS问题。 这个SO question可以帮助您解决问题吗？ 此外，here是关于此问题的Q＆amp; A.
也可能是因为non Sun JVM。