In the .service file under the [Unit] section:

    [Unit]
    Description=My Website
    After=syslog.target network.target mongodb.service

The important part is the `mongodb.service`

The manpage describes it however due to formatting it&#39;s not as clear on first sight

[systemd.unit - well formatted][1]

[systemd.unit - not so well formatted][2]


  [1]: http://web.archive.org/web/20150324001109/http://linuxmanpages.net/manpages/fedora20/man5/systemd.unit.5.html
  [2]: http://www.freedesktop.org/software/systemd/man/systemd.unit.html

`After=` dependency is only effective when service including `After=` and service included by `After=` are both scheduled to start as part of your boot up.

Ex:

    a.service
    [Unit]
    After=b.service

This way, if both `a.service` and `b.service` are **enabled**, then systemd will order `b.service` after `a.service`. 

If I am not misunderstanding, what you are asking is how to start `b.service` when `a.service` starts even though `b.service` is not enabled. 

The directive for this is `Wants=` or `Requires=` under `[Unit]`. 

    website.service
    [Unit]
    Wants=mongodb.service
    After=mongodb.service

The difference between `Wants=` and `Requires=` is that with `Requires=`, a failure to start `b.service` will cause the startup of `a.service` to fail, whereas with `Wants=`, `a.service` will start even if `b.service` fails.  This is explained in detail on [the man page of `.unit`](http://www.freedesktop.org/software/systemd/man/systemd.unit.html).  

The [documentation](http://www.asp.net/web-api/overview/creating-web-apis/creating-api-help-pages) for enabling XmlDoc integration into your Web Api projects appears to only handle situations where all of your API types are part of your WebApi project.  In particular, it discusses how to reroute the XML documentation to `App_Data/XmlDocument.xml` and uncommenting a line in your config that will consume that file.  This implicitly only allows for one project&#39;s documentation file.  

However, in my setup I have my request and response types defined in a common &quot;Models&quot; project.  This means that if I have an endpoint defined such as:

    [Route(&quot;auth/openid/login&quot;)]
    public async Task&lt;AuthenticationResponse&gt; Login(OpenIdLoginRequest request) { ... }

Where `OpenIdLoginRequest` is defined in a separate C# project like so:

    public class OpenIdLoginRequest
    {
        /// &lt;summary&gt;
        /// Represents the OpenId provider that authenticated the user. (i.e. Facebook, Google, etc.)
        /// &lt;/summary&gt;
        [Required]
        public string Provider { get; set; }

        ...
    }


Despite the XML doccomments, the properties of the `request` parameter contain no documentation when you view the endpoint-specific help page (i.e. `http://localhost/Help/Api/POST-auth-openid-login`).  

How can I make it so that types in subprojects with XML documentation are surfaced in the Web API XML documentation?


How can Xml Documentation for Web Api include documentation from beyond the main project?

Suppose I have such an ArrayList:

    ArrayList&lt;Integer&gt; list = new ArrayList&lt;Integer&gt;();
After the adding operation:

    list.add(2);
    list.add(3);
    list.add(5);
    list.add(7);
I want to remove `number 2`, if I do

    list.remove(2);
then `number 5` will be deleted, how could I delete `number 2`? And suppose I don&#39;t know the index of `number 2`.

Java, how to remove an Integer item in an ArrayList

I have a general question. How does one start a systemd unit `*.service` after a particular `*.service` has started successfully?

More specific question is, how do I start `website.service` only after `mongodb.service` has started? In other words `website.service` should depend on `mongodb.service`.

Start systemd service after specific service?

<p>I have a general question. How does one start a systemd unit <code>*.service</code> after a particular <code>*.service</code> has started successfully?</p>
<p>More specific question is, how do I start <code>website.service</code> only after <code>mongodb.service</code> has started? In other words <code>website.service</code> should depend on <code>mongodb.service</code>.</p>


I am trying to make a linux executable as a service

I execute my program like this below

    java -jar mytestprogram.jar

creates a process that runs continuously and serves REST requests. But I want to run it as a service where I can do

    service mytestprogram start
    service mytestprogram stop
    service mytestprogram status
    chkconfig mytestprogram on

etc. What is the most simple way of doing it?


Linux: process into a service

What&#39;s the difference in calling  
`stopSelf()` , `stopSelf(int)` or `stopService(new Intent(this,MyServiceClass.class))`  
inside `onStartCommand()` ?

for example if I start the same services twice this way:

    ...
    Intent myIntent1 = new Intent(AndroidAlarmService.this, MyAlarmService.class);
    myIntent1.putExtra(&quot;test&quot;, 1); 
    Intent myIntent2 = new Intent(AndroidAlarmService.this, MyAlarmService.class);
    myIntent2.putExtra(&quot;test&quot;, 2);
    startService(myIntent1);
    startService(myIntent2);
    ...

 
And implement onStartCommand in this way:

    public int onStartCommand(Intent intent, int flags, int startId)
    {
    Toast.makeText(this, &quot;onStartCommand called &quot;+intent.getIntExtra(&quot;test&quot;, 0), Toast.LENGTH_LONG).show();
    stopService(new Intent(this,MyAlarmService.class));
    return START_NOT_STICKY;
    }

I get exactly the same behaviour with the three methods,
that is onDestroy will only be called after onStartCommand is executed twice.




stopSelf() vs stopSelf(int) vs stopService(Intent)

I have seen many posts in SO regarding this but could not get the exact and most easy way to call an activity method from service class. Is broadcast receiver only the option? No easy way out ? I just need to call the following method in Activity class after the media player is prepared in Service class .

Activity class:

     	public void updateProgress() {
		// set Progress bar values
		songProgressBar.setProgress(0);
		songProgressBar.setMax(100);
		// Updating progress bar
		updateProgressBar();
	}
Service class:

       @Override
	public IBinder onBind(Intent intent) {
		Log.d(this.getClass().getName(), &quot;BIND&quot;);
		return musicBind;
	}

	@Override
	public boolean onUnbind(Intent intent) {
		return false;
	}
        @Override
	public void onPrepared(MediaPlayer mp) {
		try {
			mp.start();
		} catch (IllegalStateException e) {
			e.printStackTrace();
		}
                   
               // updateProgress();// Need to call the Activity method here 
      }

Calling activity class method from Service class

    Get-Service *sql* | sort DisplayName | out-file c:/servicelist.txt

I have a one line PowerShell script to extract list of all services running on my local machine, now, in addition to displaying &quot;Status&quot;, &quot;Name&quot; and &quot;DisplayName&quot; I also want to display **&quot;Path to executable&quot;**

How can I extract &quot;Path to executable&quot; of all services with PowerShell

I have an app some time now in which I call a service through a broadcast receiver (MyStartupIntentReceiver). The code in the broadcast receiver in order to call the service is:

    public void onReceive(Context context, Intent intent) {
        Intent serviceIntent = new Intent();
        serviceIntent.setAction(&quot;com.duk3r.eortologio2.MyService&quot;);
        context.startService(serviceIntent);
    }

The problem is that in Android 5.0 Lollipop I get the following error (in previous versions of Android, everything works ok):

    Unable to start receiver com.duk3r.eortologio2.MyStartupIntentReceiver: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.duk3r.eortologio2.MyService }

What do I have to change in order for the service to be declared as explicit and start normally? Tried some answers in other similar threads but although i got rid of the message, the service wouldn&#39;t start.

Service Intent must be explicit: Intent

I installed CentOS 7 with minimal configuration (os + dev tools). I am trying to open 80 port for `httpd` service, but something wrong with my iptables service ... what&#39;s wrong with it? What am I doing wrong? 


    # ifconfig/sbin/service iptables save
    bash: ifconfig/sbin/service: No such file or directory


    # /sbin/service iptables save
    The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

    # sudo service iptables status
    Redirecting to /bin/systemctl status  iptables.service
    iptables.service
       Loaded: not-found (Reason: No such file or directory)
       Active: inactive (dead)
    
    # /sbin/service iptables save
    The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.
    
    # sudo service iptables start
    Redirecting to /bin/systemctl start  iptables.service
    Failed to issue method call: Unit iptables.service failed to load: No such file or directory.



How can I use iptables on centos 7?

I have a simple systemd service that needs to be periodically restarted to keep its process from bugging out. Is there a configuration option for systemd services to periodically restart them? All of the [`Restart*` options][1] seem to pertain to restarting the service when it exits.


  [1]: http://www.freedesktop.org/software/systemd/man/systemd.service.html

How can I configure a systemd service to restart periodically?

&gt;nginx.service failed because the control process exited

    $ systemctl status nginx.service
    nginx.service - Startup script for nginx service
       Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
       Active: failed (Result: exit-code) since Tue 2016-03-08 13:23:35 GMT; 2min 20s ago

    Mar 08 13:23:33 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ------------ f...e)
    Mar 08 13:23:33 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
    Mar 08 13:23:34 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
    Mar 08 13:23:34 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
    Mar 08 13:23:35 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
    Mar 08 13:23:35 .startdedicated.com nginx[8315]: nginx: [emerg] still could not bind()
    Mar 08 13:23:35 startdedicated.com systemd[1]: nginx.service: control process exited, code=...=1
    Mar 08 13:23:35 startdedicated.com systemd[1]: Failed to start Startup script for nginx service.
    Mar 08 13:23:35 startdedicated.com systemd[1]: Unit nginx.service entered failed state.
    Mar 08 13:23:35 startdedicated.com systemd[1]: nginx.service failed.



nginx.service failed because the control process exited

With journalctl, it is possible to remove the old logs, by specifying either the maximum disk space they can use, or the maximum age they can have, or the maximum number of separate journal files (using the options `--vacuum-size`, `--vacuum-time` or `--vacuum-files`).

Is there a way to restrain this deletion to a specific systemd unit ?

`journalctl -u &lt;unit&gt; --vacuum-time=2d` seems not to work as desired: according to the documentation, `-u` only works when displaying logs.

journalctl - remove logs of a specific unit

I am trying to redirect output of a `systemd` service to a file but it doesn&#39;t seem to work:  

    [Unit]
    Description=customprocess
    After=network.target
    
    [Service]
    Type=forking
    ExecStart=/usr/local/bin/binary1 agent -config-dir /etc/sample.d/server
    StandardOutput=/var/log1.log
    StandardError=/var/log2.log
    Restart=always
    
    [Install]
    WantedBy=multi-user.target

Please correct my approach.

Content Type	Original Author	Original Content on Stackoverflow
Question	user2312578	View Question on Stackoverflow
Solution 1 - Service	user2312578	View Answer on Stackoverflow
Solution 2 - Service	Umut	View Answer on Stackoverflow

Start systemd service after specific service?

Service Problem Overview

Service Solutions

Solution 1 - Service

Solution 2 - Service

Java, how to remove an Integer item in an ArrayList

How can Xml Documentation for Web Api include documentation from beyond the main project?

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