摘要：最近幫助一個客戶部署了一個環境。客戶提出，能不能讓開機啟動。不需要讓運維人員知道如何操作。需求合理，沒有拒絕的理由。原以為設置個開機啟動，和玩似的，結果被機器玩了。所以，第一眼在下看到官方的開機啟動方案時，眼前一亮。

最近幫助一個客戶部署了一個Apache Servicemix環境。
客戶提出，能不能讓Servicemix開機啟動。這樣，如果機器出現了什么問題，重啟一下就好了。不需要讓運維人員知道如何操作Servicemix。
當然可以。需求合理，沒有拒絕的理由。

但是實際操作的時候，試過在init.d目錄下加腳本，在rc.local中加命令行。在網上也找了好幾個方法，均告失敗，也沒看到任何錯誤。原以為設置個開機啟動，和玩似的，結果被機器玩了。

不過，功夫不負有心人，終于還是找到了辦法。

因為servicemix其實就是一個開源大禮包，把幾個apache的開源軟件組裝在一起拼湊而成。運行時環境是Karaf。所以，第一眼在karaf下看到官方的開機啟動方案時，眼前一亮。覺得這個方法應該可行。結果一試，果然可以。

操作步驟也非常簡單，摘抄如下（不過，還是去官網看一下更靠譜，網址：https://karaf.apache.org/manu...）：

Installation
Apache Karaf Service Wrapper is an optional feature. You have to install the "Service Wrapper" installer first.

In the console:

karaf@root()> feature:install service-wrapper
Now, you have the wrapper:install command, to "register" Apache Karaf as service/daemon on your system:

karaf@root()> wrapper:install --help
DESCRIPTION
        wrapper:install

        Install the container as a system service in the OS.

SYNTAX
        wrapper:install [options]

OPTIONS
        -d, --display
                The display name of the service.
                (defaults to karaf)
        --help
                Display this help message
        -s, --start-type
                Mode in which the service is installed. AUTO_START or DEMAND_START (Default: AUTO_START)
                (defaults to AUTO_START)
        -n, --name
                The service name that will be used when installing the service. (Default: karaf)
                (defaults to karaf)
        -D, --description
                The description of the service.
                (defaults to )
The wrapper:install command detects the running Operating Service and provide the service/daemon ready to be integrated in your system.

For instance, on a Ubuntu/Debian Linux system:

karaf@root()> wrapper:install
Creating file: /opt/apache-karaf-4.0.0/bin/karaf-wrapper
Creating file: /opt/apache-karaf-4.0.0/bin/karaf-service
Creating file: /opt/apache-karaf-4.0.0/etc/karaf-wrapper.conf
Creating missing directory: /opt/apache-karaf-4.0.0/lib/wrapper
Creating file: /opt/apache-karaf-4.0.0/lib/wrapper/libwrapper.so
Creating file: /opt/apache-karaf-4.0.0/lib/wrapper/karaf-wrapper.jar
Creating file: /opt/apache-karaf-4.0.0/lib/wrapper/karaf-wrapper-main.jar

Setup complete.  You may wish to tweak the JVM properties in the wrapper configuration file:
        /opt/apache-karaf-4.0.0/etc/karaf-wrapper.conf
before installing and starting the service.


Ubuntu/Debian Linux system detected:
  To install the service:
    $ ln -s /opt/apache-karaf-4.0.0/bin/karaf-service /etc/init.d/

  To start the service when the machine is rebooted:
    $ update-rc.d karaf-service defaults

  To disable starting the service when the machine is rebooted:
    $ update-rc.d -f karaf-service remove

  To start the service:
    $ /etc/init.d/karaf-service start

  To stop the service:
    $ /etc/init.d/karaf-service stop

  To uninstall the service :
    $ rm /etc/init.d/karaf-service