Author: wang
Date: Thu May 22 20:44:30 2014
New Revision: 1596966
URL: http://svn.apache.org/r1596966
Log:
HDFS-6435. Add support for specifying a static uid/gid mapping for the NFS
gateway. (atm via wang)
Modified:
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm
Modified: hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt?rev=1596966&r1=1596965&r2=1596966&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt (original)
+++ hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt Thu May 22
20:44:30 2014
@@ -440,6 +440,9 @@ Release 2.5.0 - UNRELEASED
HDFS-6396. Remove support for ACL feature from INodeSymlink.
(Charles Lamb via wang)
+ HDFS-6435. Add support for specifying a static uid/gid mapping for the NFS
+ gateway. (atm via wang)
+
OPTIMIZATIONS
HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn)
Modified:
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm?rev=1596966&r1=1596965&r2=1596966&view=diff
==============================================================================
---
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm
(original)
+++
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm
Thu May 22 20:44:30 2014
@@ -338,8 +338,21 @@ HDFS NFS Gateway
The system administrator must ensure that the user on NFS client host has
the same
name and UID as that on the NFS gateway host. This is usually not a problem
if
the same user management system (e.g., LDAP/NIS) is used to create and
deploy users on
- HDFS nodes and NFS client node. In case the user account is created manually
in different hosts, one might need to
+ HDFS nodes and NFS client node. In case the user account is created manually
on different hosts, one might need to
modify UID (e.g., do "usermod -u 123 myusername") on either NFS client or
NFS gateway host
in order to make it the same on both sides. More technical details of RPC
AUTH_UNIX can be found
in {{{http://tools.ietf.org/html/rfc1057}RPC specification}}.
+ Optionally, the system administrator can configure a custom static mapping
+ file in the event one wishes to access the HDFS NFS Gateway from a system
with
+ a completely disparate set of UIDs/GIDs. By default this file is located at
+ "/etc/nfs.map", but a custom location can be configured by setting the
+ "dfs.nfs.static.mapping.file" property to the path of the static mapping
file.
+ The format of the static mapping file is similar to what is described in the
+ exports(5) manual page, but roughly it is:
+
+-------------------------
+# Mapping for clients accessing the NFS gateway
+uid 10 100 # Map the remote UID 10 the local UID 100
+gid 11 101 # Map the remote GID 11 to the local GID 101
+-------------------------
