Quartz.Net Scheduler服务不会在启动时自动启动

Question

I have developed a Quartz.Net windows service to run scheduled jobs and I have set up an SQLite jobstore for it to work. Here are the settings of my AdoJobStore :

# SQLite settings
quartz.jobStore.type = Quartz.Impl.AdoJobStore.JobStoreTX, Quartz
quartz.jobStore.misfireThreshold = 60000
quartz.jobStore.lockHandler.type = Quartz.Impl.AdoJobStore.UpdateLockRowSemaphore, Quartz
quartz.jobStore.useProperties = true
quartz.jobStore.dataSource = default
quartz.jobStore.tablePrefix = qrtz_
quartz.jobStore.driverDelegateType = Quartz.Impl.AdoJobStore.SQLiteDelegate, Quartz
quartz.dataSource.default.provider = SQLite-10
quartz.dataSource.default.connectionString = Data Source=.\jobs.db;Version=3

Before giving you a headache, I should say that this is a working solution! That means the job store works just fine! Each job consists of running an .exe file that will get its parameters from an SQL Server database using a connection string that is stored in a text file.

So if the service is started automatically, everything works fine.

After installing the Windows service, we give it a username that has access to the destination database in service's Log On tab. We set the service to start automatically (and have tried the Automatic Delayed mode as well). In the Recovery tab of the service we also command it to Restart in case it crashes.

However, the service does not seems to be starting by itself on some machines and that has kept me wondering for quite a while now. On machines with failure, this is what my service logs when it fails to start:

2015-02-13 15:09:15,674 [1] ERROR Quartz.Server.QuartzServer [(null)] - Server initialization failed:Unable to bind scheduler to remoting.
Quartz.SchedulerException: Unable to bind scheduler to remoting. ---> System.Net.Sockets.SocketException: No such host is known
   at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
   at System.Net.Dns.GetHostEntry(String hostNameOrAddress)
   at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp()
   at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName()
   at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel..ctor(IDictionary properties, IServerChannelSinkProvider sinkProvider, IAuthorizeRemotingConnection authorizeCallback)
   at System.Runtime.Remoting.Channels.Tcp.TcpChannel..ctor(IDictionary properties, IClientChannelSinkProvider clientSinkProvider, IServerChannelSinkProvider serverSinkProvider)
   at Quartz.Simpl.RemotingSchedulerExporter.RegisterRemotingChannelIfNeeded()
   at Quartz.Simpl.RemotingSchedulerExporter.Bind(IRemotableQuartzScheduler scheduler)
   at Quartz.Core.QuartzScheduler.Bind()
   at Quartz.Core.QuartzScheduler.Initialize()
   --- End of inner exception stack trace ---
   at Quartz.Core.QuartzScheduler.Initialize()
   at Quartz.Impl.StdSchedulerFactory.Instantiate()
   at Quartz.Impl.StdSchedulerFactory.GetScheduler()
   at Quartz.Server.QuartzServer.Initialize() [See nested exception: System.Net.Sockets.SocketException (0x80004005): No such host is known
   at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
   at System.Net.Dns.GetHostEntry(String hostNameOrAddress)
   at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp()
   at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName()
   at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel..ctor(IDictionary properties, IServerChannelSinkProvider sinkProvider, IAuthorizeRemotingConnection authorizeCallback)
   at System.Runtime.Remoting.Channels.Tcp.TcpChannel..ctor(IDictionary properties, IClientChannelSinkProvider clientSinkProvider, IServerChannelSinkProvider serverSinkProvider)
   at Quartz.Simpl.RemotingSchedulerExporter.RegisterRemotingChannelIfNeeded()
   at Quartz.Simpl.RemotingSchedulerExporter.Bind(IRemotableQuartzScheduler scheduler)
   at Quartz.Core.QuartzScheduler.Bind()
   at Quartz.Core.QuartzScheduler.Initialize()]

The service is installed on host 127.0.0.1 port 555 and does not seem to need a dependency because it works under some other machines.

I have a feeling that the service is trying to start itself before there is an access to the database or before the TCP host is established. But if that's the case, why does it work on other devices?

I have asked the same question before but have failed to find a working answer. Any help from Quartz.Net dev team or Windows Services experts is greatly appreciated.

Answer 1

Disclaimer. I'm not part of the Quartz.net dev team, nor am I an expert on Windows services

The service is installed on host 127.0.0.1 port 555 and does not seem to need a dependency because it works under some other machines.

Your reasoning is false. It could be that the required services just happen to have always started on the other machines, but without setting a dependency this is not guaranteed.

So, since you are getting a DNS error, I would suggest you start by setting your service do that it depends on Dnscache and Tcpip .