Ambariにパッチを自作して適用してみる

1) IDEなどから.patchファイルを作成する。例えば、MetaStoreをスタート時にKinitする。

[root@node1 ~]# cat ~/hive_metastore_kinit.patch
Index: ambari-server/src/main/resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- ambari-server/src/main/resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py (revision 6a8abfa65789b87da764549c27ca0f1440b91297)
+++ ambari-server/src/main/resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py (revision )
@@ -55,6 +55,14 @@
     env.set_params(params)

     # writing configurations on start required for securtity
+    if params.security_enabled:
+        import status_params
+        cached_kinit_executor(status_params.kinit_path_local,
+                              status_params.hive_user,
+                              params.hive_metastore_keytab_path,
+                              params.hive_server_principal, # FIXME: Should use 'hive.metastore.kerberos.principal'
+                              status_params.hostname,
+                              status_params.tmp_dir)
     self.configure(env)

     hive_service('metastore', action='start', upgrade_type=upgrade_type)


2) 適用してみる
[root@node1 ~]# cd /var/lib/ambari-server/
[root@node1 ambari-server]# patch -p3 -b -i ~/hive_metastore_kinit.patch [--verbose]

3) 確認
[root@node1 ambari-server]# ls -l resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore*
-rwxr-xr-x 1 root root 10655 Jul 27 09:03 resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py
-rwxr-xr-x 1 root root 10404 May  5 19:11 resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py.orig

[root@node1 ambari-server]# diff resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py.orig resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py
57a58,60
>     if params.security_enabled:
>         kinit_command=format("{kinit_path_local} -kt {hive_metastore_keytab_path} {hive_server_principal}; ") # FIXME: Should use 'hive.metastore.kerberos.principal'
>         Execute(kinit_command,user=params.smokeuser)

4) Ambari Serverの再起動
[root@node1 ambari-server]# ambari-server restart

5) Agent側にもコピーされたのを確認
[root@node2 ~]# ls -l /var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py*
-rw-r--r-- 1 root root 10655 Jul 27 09:07 /var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py
-rw-r--r-- 1 root root 10777 Jul 27 09:07 /var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.pyc
-rw-r--r-- 1 root root 10404 Jul 27 09:07 /var/lib/ambari-agent/cache/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py.orig


6) 元に戻す
[root@node1 ~]# cd /var/lib/ambari-server/
[root@node1 ambari-server]# mv resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py.orig resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py
mv: overwrite `resources/common-services/HIVE/0.12.0.2.0/package/scripts/hive_metastore.py'? y
[root@node1 ambari-server]# ambari-server restart