[jira] [Commented] (KARAF-4281) System scripts: provide Systemd templates to manage Karaf child instances

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KARAF-4281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15108306#comment-15108306 ] 

ASF GitHub Bot commented on KARAF-4281:
---------------------------------------

GitHub user lburgazzoli opened a pull request:

    https://github.com/apache/karaf/pull/132

    KARAF-4281 - System scripts: provide Systemd templates to manage Kara…

    …f child instances

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/lburgazzoli/apache-karaf KARAF-4281

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/karaf/pull/132.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #132
    
----
commit bc9b83bcedbd136ef1f0548770d08d444f6701e7
Author: lburgazzoli <lb...@gmail.com>
Date:   2016-01-20T09:46:56Z

    KARAF-4281 - System scripts: provide Systemd templates to manage Karaf child instances

----


> System scripts: provide Systemd templates to manage Karaf child instances
> -------------------------------------------------------------------------
>
>                 Key: KARAF-4281
>                 URL: https://issues.apache.org/jira/browse/KARAF-4281
>             Project: Karaf
>          Issue Type: New Feature
>          Components: karaf-os-integration
>            Reporter: Luca Burgazzoli
>            Assignee: Freeman Fang
>            Priority: Minor
>
> Systemd's has as  a sort of template-engine for unit files which are defined in the form of template-name@.service, i.e. for karaf I've created one named karaf@.service with content like:
> {code}
>   [Unit]
>   Description=Karaf - %i
>   After=syslog.target network.target
>   [Service]
>   EnvironmentFile=-/etc/karaf/karaf.conf
>   Environment=JAVA_HOME=/opt/java/1.8.0
>   Environment=KARAF_HOME=/opt/apache/karaf-4
>   Environment=KARAF_BASE=/opt/apache/karaf-4/instances/%i
>   ExecStart=/opt/apache/karaf-4/bin/karaf daemon
>   ExecStop=/opt/apache/karaf-4/bin/karaf stop
>   LimitNOFILE=102642
>   [Install]
>   WantedBy=multi-user.target
> {code}
> With such configuration, you do not need to create a systemd unit file for each child instance but you can leverage karaf@.service, i.e:
> {code}
>   systemctl start karaf@instance-1
> {code}
> A service created in such way can also be configured to auto-start at boot like any other Systemd unit:
> {code}
>   [lb@home]# systemctl enable karaf@instance-1
>   Created symlink from /etc/systemd/system/multi-user.target.wants /karaf@instance-1.service to /etc/systemd/system/karaf@.service. 
> {code}



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