Remaining `nomad logmon` process

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• A nomad logmon process is created for each task.
• When destroying a job, the logmon process will be terminated.
• If nomad is terminated with running tasks, the logmon process remains.

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nomad 代码中 logmon process 创建路径

TaskRunner.initHooks
-> newLogMonHook()
-> LaunchLogMon()

可关闭该机制，但目前只对internal drivers开放

logmonHook.isLoggingDisabled()
-> InternalCapabilitiesDriver.InternalCapabilities().DisableLogCollection