hadoop - 启用 Kerberos 后无法访问 Hadoop CLI

Question

我已遵循以下教程 CDH Hadoop Kerberos , NameNode 和 DataNode 能够正常启动，我能够在 WebUI (0.0.0.0:50070) 上看到所有列出的 DataNode。但是我无法访问 Hadoop CLI。我已遵循本教程 Certain Java versions cannot read credentials cache ，我仍然无法使用 Hadoop CLI。

[root@local9 hduser]# hadoop fs -ls /
20/11/03 12:24:32 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:KERBEROS) cause:javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
20/11/03 12:24:32 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)]
20/11/03 12:24:32 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:KERBEROS) cause:java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
ls: Failed on local exception: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]; Host Details : local host is: "local9/192.168.2.9"; destination host is: "local9":8020;
[root@local9 hduser]# klist
Ticket cache: KEYRING:persistent:0:krb_ccache_hVEAjWz
Default principal: hdfs/local9@FBSPL.COM

Valid starting       Expires              Service principal
11/03/2020 12:22:42  11/04/2020 12:22:42  krbtgt/FBSPL.COM@FBSPL.COM
        renew until 11/10/2020 12:22:12
[root@local9 hduser]# kinit -R
[root@local9 hduser]# klist
Ticket cache: KEYRING:persistent:0:krb_ccache_hVEAjWz
Default principal: hdfs/local9@FBSPL.COM

Valid starting       Expires              Service principal
11/03/2020 12:24:50  11/04/2020 12:24:50  krbtgt/FBSPL.COM@FBSPL.COM
        renew until 11/10/2020 12:22:12
[root@local9 hduser]# hadoop fs -ls /
20/11/03 12:25:04 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:KERBEROS) cause:javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
20/11/03 12:25:04 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)]
20/11/03 12:25:04 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:KERBEROS) cause:java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
ls: Failed on local exception: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]; Host Details : local host is: "local9/192.168.2.9"; destination host is: "local9":8020;

任何帮助将不胜感激。

Answer 1

我想通了这个问题。 这是 Redhat 中的缓存凭据错误:Red Hat Bugzilla – Bug 1029110 然后我在 Cloudera 上的 Kerberos 上找到了这个文档:Manage krb5.conf

最后的解决方案是从 /etc/krb5.conf

中注释掉这一行

default_ccache_name = KEYRING:persistent:%{uid}

评论此行后，我能够访问 Hadoop CLI。