如何在Linux系统中将Spring Boot应用程序打包为可执行jar as a Service ?这是推荐的方法吗,还是应该将这个应用程序转换为war并将其安装到Tomcat中?

目前,我可以从屏幕会话运行Spring引导应用程序,这很好,但需要在服务器重新启动后手动启动。

我正在寻找的是一般的建议/方向或样本init。D脚本,如果我的方法与可执行jar是适当的。


当前回答

如果你想使用Spring Boot 1.2.5和Spring Boot Maven Plugin 1.3.0。M2,这是我们的解

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.5.RELEASE</version>
</parent>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>1.3.0.M2</version>
            <configuration>
                <executable>true</executable>
            </configuration>
        </plugin>
    </plugins>
</build>

<pluginRepositories>
    <pluginRepository>
        <id>spring-libs-milestones</id>
        <url>http://repo.spring.io/libs-milestone</url>
    </pluginRepository> 
</pluginRepositories>

然后像往常一样编译:mvn清洁包,做一个符号链接ln -s /…/myapp.jar /etc/init.chmod +x /etc/init. D /myapp,使其可执行启动myapp服务(Ubuntu服务器)

其他回答

I don't know of a "standard" shrink-wrapped way to do that with a Java app, but it's definitely a good idea (you want to benefit from the keep-alive and monitoring capabilities of the operating system if they are there). It's on the roadmap to provide something from the Spring Boot tool support (maven and gradle), but for now you are probably going to have to roll your own. The best solution I know of right now is Foreman, which has a declarative approach and one line commands for packaging init scripts for various standard OS formats (monit, sys V, upstart etc.). There is also evidence of people having set stuff up with gradle (e.g. here).

这可以在Ubuntu中使用Systemd服务完成

[Unit]
Description=A Spring Boot application
After=syslog.target

[Service]
User=baeldung
ExecStart=/path/to/your-app.jar SuccessExitStatus=143

[Install] 
WantedBy=multi-user.target

你可以点击这个链接获得更详细的描述和不同的方法。 http://www.baeldung.com/spring-boot-app-as-a-service

我最终为WAR/JAR布局做了systemd服务

我调用java -jar是因为它更灵活。我还试着把ExecStart=spring-mvc。战争,但即使是可执行的,我得到'Exec格式错误'

无论如何,现在systemd出现在所有发行版上,并提供了一个很好的解决方案来重定向日志(syserr是重要的,当你的服务甚至没有启动log4j文件位置将为空:))。

cat /etc/systemd/system/spring-mvc.service 
[Unit]
Description=Spring MVC Java Service

[Service]
User=spring-mvc
# The configuration file application.properties should be here:
WorkingDirectory=/usr/local/spring-mvc


# Run ExecStartPre with root-permissions
PermissionsStartOnly=true

ExecStartPre=-/bin/mkdir -p /var/log/spring-mvc


ExecStartPre=/bin/chown -R spring-mvc:syslog /var/log/spring-mvc
ExecStartPre=/bin/chmod -R 775 /var/log/spring-mvc



#https://www.freedesktop.org/software/systemd/man/systemd.service.html#ExecStart=
ExecStart=/usr/bin/java \
        -Dlog4j.configurationFile=log4j2-spring.xml \
        -DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector \
        -Dspring.profiles.active=dev \
        -Denvironment-type=dev \
        -XX:+UseConcMarkSweepGC \
        -XX:CMSInitiatingOccupancyFraction=80 \
        -XX:NewSize=756m \
        -XX:MetaspaceSize=256m \
        -Dsun.net.inetaddr.ttl=5 \
        -Xloggc:/var/log/spring-mvc/gc.log \
        -verbose:gc \
        -verbosegc \
        -XX:+DisableExplicitGC \
        -XX:+PrintGCDetails \
        -XX:+PrintGCDateStamps \
        -XX:+PreserveFramePointer \
        -XX:+StartAttachListener \
        -Xms1024m \
        -Xmx1024m \
        -XX:+HeapDumpOnOutOfMemoryError \
        -jar spring-mvc.war

SuccessExitStatus=143
StandardOutput=journal
StandardError=journal


KillSignal=SIGINT
TimeoutStopSec=20
Restart=always
RestartSec=5
StartLimitInterval=0
StartLimitBurst=10

LimitNOFILE=500000
LimitNPROC=500000

#https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitCPU=
#LimitCPU=, LimitFSIZE=, LimitDATA=, LimitSTACK=, LimitCORE=, LimitRSS=, LimitNOFILE=, LimitAS=, LimitNPROC=, LimitMEMLOCK=, LimitLOCKS=, LimitSIGPENDING=, LimitMSGQUEUE=, LimitNICE=, LimitRTPRIO=, LimitRTTIME=¶

SyslogIdentifier=spring-mvc

[Install]
WantedBy=multi-user.target


# https://www.freedesktop.org/software/systemd/man/journalctl.html
#check logs --- journalctl -u spring-mvc -f -o cat

Rsyslog -将应用程序的syslog输入重定向到特定的文件夹/文件

cat /etc/rsyslog.d/30-spring-mvc.conf 
if $programname == 'spring-mvc' then /var/log/spring-mvc/spring-mvc.log
& stop

logrotate

cat /etc/logrotate.d/spring-mvc.conf 
/var/log/spring-mvc/spring-mvc.log
{
    daily
    rotate 30
    maxage 30
    copytruncate
    missingok
    notifempty
    compress
    dateext
    dateformat _%Y-%m-%d_%H-%M
    delaycompress
    create 644 spring-mvc syslog
    su spring-mvc syslog
}

logrotate gc

cat /etc/logrotate.d/spring-mvc-gc.conf 
/var/log/spring-mvc/gc.log
{
    daily
    rotate 30
    maxage 30
    copytruncate
    missingok
    notifempty
    compress
    dateext
    dateformat _%Y-%m-%d_%H-%M
    delaycompress
    create 644 spring-mvc syslog
    su spring-mvc syslog
}

Following up on Chad's excellent answer, if you get an error of "Error: Could not find or load main class" - and you spend a couple hours trying to troubleshoot it, whether your executing a shell script that starts your java app or starting it from systemd itself - and you know your classpath is 100% correct, e.g. manually running the shell script works as well as running what you have in systemd execstart. Be sure you're running things as the correct user! In my case, I had tried different users, after quite a while of troubleshooting - i finally had a hunch, put root as the user - voila, the app started correctly. After determining it was a wrong user issue, I chown -R user:user the folder and subfolders and the app ran correctly as the specified user and group so no longer needed to run it as root (bad security).

我的SysVInit脚本Centos 6 / RHEL(还不理想)。这个脚本需要ApplicationPidListener。

/etc/init.d/app的源代码

#!/bin/sh
#
# app Spring Boot Application 
#
# chkconfig:   345 20 80
# description: App Service
#           

### BEGIN INIT INFO
# Provides: App
# Required-Start: $local_fs $network
# Required-Stop: $local_fs $network
# Default-Start: 3 4 5 
# Default-Stop: 0 1 2 6
# Short-Description: Application
# Description:      
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

exec="/usr/bin/java"
prog="app"
app_home=/home/$prog/
user=$prog

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

lockfile=/var/lock/subsys/$prog    
pid=$app_home/$prog.pid

start() {

    [ -x $exec ] || exit 5
    [ -f $config ] || exit 6
    # Check that networking is up.
    [ "$NETWORKING" = "no" ] && exit 1
    echo -n $"Starting $prog: "
    cd $app_home
    daemon --check $prog --pidfile $pid --user $user $exec $app_args &
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p $pid $prog
    retval=$?
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    stop
    start
}

reload() {
    restart
}

force_reload() {
    restart
}

rh_status() {
    status -p $pid $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
        exit 2
esac
exit $?

配置文件/etc/sysconfig/app示例:

exec=/opt/jdk1.8.0_05/jre/bin/java

user=myuser
app_home=/home/mysuer/

app_args="-jar app.jar"

pid=$app_home/app.pid