Hadoop Kerberos：hdfs命令'找不到任何Kerberos tgt'，即使我有一张使用kinit的票

Question

我为Hadoop集群设置了Kerberos身份验证。当我尝试使用kinit获取kerberos票时，它将票证存储在krb5cc_0中

$ sudo klist
Ticket cache: FILE:/tmp/krb5cc_0
Default principal: hduser/[email protected]

Valid starting       Expires              Service principal 
01/04/2018 10:15:14  01/05/2018 10:15:14  krbtgt/[email protected]

但是当我尝试在命令行上列出HDFS目录时，我收到以下错误：

$ hdfs dfs -ls /
openjdk version "1.8.0_151"
OpenJDK Runtime Environment (build 1.8.0_151-b12)
OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)

Java config name: null
Native config name: /etc/krb5.conf
Loaded from native config
>>>KinitOptions cache name is /tmp/krb5cc_1001
18/01/04 10:07:48 WARN ipc.Client: Exception encountered while connecting to the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
18/01/04 10:07:48 WARN ipc.Client: Exception encountered while connecting to the server : javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]

我的/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 = FDATA.COM
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
default_ccache_name = FILE:/tmp/krb5cc_0

[realms]
FDATA.COM = {
kdc = kdc.fdata.com
admin_server = kdc.fdata.com
}

[domain_realm]
.fdata.com = FDATA.COM
fdata.com = FDATA.COM

• 操作系统：数百个
• Kerberos：MIT Kerberos 1.5.1
• Hadoop：Apache Hadoop 2.7.3

为什么hdfs和kinit使用不同的kerberos ccache文件？

Answer 1

因为你用sudo称为kinit而不是你自己。您的klist输出显示root的Kerberos票证。