tomscut created HDFS-15380:
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Summary: Could not fetch real remote ip in
RouterWebHdfsMethods.java
Key: HDFS-15380
URL: https://issues.apache.org/jira/browse/HDFS-15380
Project: Hadoop HDFS
Issue Type: Bug
Components: webhdfs
Affects Versions: 3.1.0
Reporter: tomscut
Fix For: 3.4.0
Attachments: PATCH
We plan to add audit log for hdfs router, then we fetch remote ip via
Server.getRemoteIp(), but the result is "localhost/127.0.0.1".
"REMOTE_ADDRESS" in RouterWebHdfsMethods.java is a ThreadLocal field, setting
in construction method RouterWebHdfsMethods() and init(). When we call method
Server.getRemoteIp() to fetch remote ip, the thread would be changed, so the
ThreadLocal field "REMOTE_ADDRESS" is null, and would be passed to
"localhost/127.0.0.1" via InetAddress.getByName().
So we can change this field "REMOTE_ADDRESS" to a String value, just like
NamenodeWebHdfsMethods does.
{code:java}
2020-05-27 19:15:18,797 INFO router.RouterWebHdfsMethods
(RouterWebHdfsMethods.java:<init>(138)) - RouterWebHdfsMethods REMOTE_ADDRESS:
14.39.39.28, current thread: qtp476579021-10902020-05-27 19:15:18,827 INFO
router.RouterWebHdfsMethods (RouterWebHdfsMethods.java:init(150)) - init
REMOTE_ADDRESS: 14.39.39.28, current thread: qtp476579021-10902020-05-27
19:15:18,836 INFO router.RouterWebHdfsMethods
(RouterWebHdfsMethods.java:getRemoteAddr(170)) - getRemoteAddr REMOTE_ADDRESS:
null, current thread: IPC Server handler 75 on 88882020-05-27 19:15:18,837 INFO
router.RouterWebHdfsMethods (RouterWebHdfsMethods.java:getRemoteAddr(170)) -
getRemoteAddr REMOTE_ADDRESS: null, current thread: IPC Server handler 75 on
88882020-05-27 19:15:18,883 INFO router.RouterWebHdfsMethods
(RouterWebHdfsMethods.java:reset(164)) - reset REMOTE_ADDRESS: null, current
thread: IPC Server handler 75 on 8888
{code}
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