How To: start hvr as a service using systemd in linux?

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    Pallavik
    Keymaster

    How To: start hvr as a service using systemd in linux?

    Scenario:

    This article explains how to run hvr as a service rather than starting the hvrremotelistener on remote machine. For the purpose of this article we will see how the service can be started on tcp port 4343

    Steps:

    Step 1] As the root user, or a user with sudo priviledge, create a file called hvr.socket in the directory /etc/systemd/system with the following contents:

    [Unit]
    Description=HVR service socket
    
    [Socket]
    ListenStream=4343
    Accept=true
    TriggerLimitIntervalSec=1s     
    TriggerLimitBurst=10000        
    MaxConnectionsPerSource=100    
    MaxConnections=500
    KeepAlive=true
    
    [Install]
    WantedBy=sockets.target

     

    Step 2] As the root user, or a user with sudo priviledge, create a file called hvr@.service in the directory /etc/systemd/system with the following content:

    [Unit]
    Description=HVR service
    
    [Service]
    Environment="HVR_HOME=/home/hvr/hvr_home"
    Environment="HVR_CONFIG=/home/hvr/hvr_config"
    Environment="HVR_TMP=/tmp"
    User=root
    ExecStart=/home/hvr/hvr_home/bin/hvr -r -plogin
    StandardInput=socket
    KillMode=process
    
    [Install]
    WantedBy=multi-user.target

    1) ExecStart should use option –plogin for PAM authentication

    2) ExecStart should point to the hvr in $HVR_HOME directory

    3) Environment variable for $HVR_HOME should be path of hvr_home on your machine

    4) Environment variable for $HVR_CONFIG should be path of hvr_config on your machine

    5) Environment variable for $HVR_TMP can be any tmp location on your machine

     

    Step 3] Enable the service using below command

    $ systemctl enable hvr.socket

    Step 4] Start the service using below command

    $ systemctl start hvr.socket

    Step 5] Verify whether service is running using below command.

    # systemctl status hvr.socket

    The above setup allows you to start hvr as a service and there is no need to start hvrremotelistener every time and this service is started whenever the system is rebooted.

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