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Posted to issues@ambari.apache.org by "Doroszlai, Attila (JIRA)" <ji...@apache.org> on 2018/09/30 06:10:00 UTC
[jira] [Commented] (AMBARI-24703) Can't use symlink for Kafka Log
directory. Ambari create a directory and remove the symlink when Kafka
service is restarted
[ https://issues.apache.org/jira/browse/AMBARI-24703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633257#comment-16633257 ]
Doroszlai, Attila commented on AMBARI-24703:
--------------------------------------------
Hi [~rsoni],
You have to configure Ambari with the target directory, where you want the symlink to point to. This will preserve the symlink during Kafka restart.
Ambari handles 2 Kafka log directories: {{/var/log/kafka}} and the one specified in Ambari's Kafka configuration {{kafka-env/kafka_log_dir}}. The latter one is always a directory, while {{/var/log/kafka}} can be a symlink, but only if {{kafka_log_dir}} is configured to a different value, since a symlink pointing to itself is broken.
With this configuration:
{noformat:title=kafka-env}
"kafka_log_dir": "/var/log/kafka-custom"
{noformat}
we get the following structure:
{noformat:title=ls -la /var/log/kafka*}
lrwxrwxrwx. 1 root root 21 Sep 29 08:14 /var/log/kafka -> /var/log/kafka-custom
/var/log/kafka-custom:
drwxr-xr-x. 2 kafka hadoop 4096 Sep 30 06:04 .
drwxr-xr-x. 14 root root 4096 Sep 29 09:24 ..
-rw-r--r--. 1 kafka hadoop 504 Sep 30 06:06 controller.log
...
-rw-r--r--. 1 kafka hadoop 358 Sep 29 08:14 kafka.err
...
-rw-r--r--. 1 kafka hadoop 158 Sep 30 06:04 server.log
{noformat}
> Can't use symlink for Kafka Log directory. Ambari create a directory and remove the symlink when Kafka service is restarted
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-24703
> URL: https://issues.apache.org/jira/browse/AMBARI-24703
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.6.2
> Reporter: Rahul Soni
> Priority: Major
> Attachments: Ambari Kafka.log
>
>
> Ambari is behaving erratically when a symlink is mentioned as Kafka Log Directory. When the log directory for Kafka mentions a symlink, a restart to the Kafka service removes the symlink and creates a new directory instead.
> Attached are the logs from service restart. [^Ambari Kafka.log]
> ^Ambari version - 2.6.2.2^
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