-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 В Вт, 04/07/2017 в 07:48 -0500, Billy Crook пишет: > You can set up syslog to forward of to an external system. That > helps but > sometimes it can miss things if the crash is severe enough. > > Serial console can capture much more if there's another server near > by that > you can connect and leave minicom logging. Even better if you have a > nice > physical "serial console server" like an OpenGear. > > Most server motherboards these days contain some sort of management > chip > implementing ipmi and additional remote access features which often > include > remote KVM over IP. > > Even the most basic ipmi controllers will include serial over LAN > which > let's do you use serial console without a server nearby to connect a > physical serial cable. > > If the hang is caused by a hardware problem you may find indication > of it > in the ipmi system event list. 'ipmitool sel list' > > There's also a kernel module, netconsole, that forwards kernel > messages off > host in a syslog compatible format. It implements IP and UDP and its > own > code so it works independent of the system's TCP stack which is > important > during some crashes which might otherwise break networking before the > messages get transmitted. > > That's just a few ways. There's probably others. Hope it helps > > On Jul 4, 2017 07:32, "Alexandr" <sss@xxxxxxxxxxxxxxx> wrote: > > > Good day to all. > > please suggest methods of system hang debugging on headless server > > ? > > -- > > To unsubscribe from this list: send the line "unsubscribe linux- > > admin" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > thx for reply. it's self built server on regular desktop hardware, so have not ipmi. it's possible to have phisical access to it, so i guess serial console is my solution. i am also have few questions about serial console setup. as i understand simplest way to achieve it is default serial com port, i am also have read something about serial via usb (looks like it require some sort of special adaptor) also netconsole looks interesting too, i will setup it right now. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEl/sA7WQg6czXWI/dsEApXVthX7wFAllcRvEACgkQsEApXVth X7w5DA//VnlRsWDxy0RifqMrmBtiL1/fxdl3Wz/PhH/Fdu+AVgM2XdaITYHfI0uU 7l6bYPPnMnXlmiqtJ0DkYEV+Xgq7Gkuw3JK8eppLHehgMfaIEmnXWPMoxVVZalmn u1HVGBdEGfRtiLisrNvZvGgeCwXdGIfMeZbnBFwFbG3vbxzHzaGd7mPTO9CvhPyj FArTHF+i3DtVpteXbww78JS0qEKLTh83cW1FcCqAWjZBvrnz35i7Egp4grajhhzQ ki8wFUqwwVWY+JVg6UcpGr5CH4b11b4qv3Vol/ideooiTHWPv1xKXMjT3+DIggzc gh0g6ZwK3IDcR2rtJ2lGD/UOi4jJNti8A6O/48sXIsgruePuDIPNJOIbBbRR5EDv cDlb6vVHA0QO6XilUcTKFPEjg9yG++JIyYHmGrGxJGo28KpF+GbStA1xgm98Mbqj AJP/mZIdLCoKuRGEGkPCvHAX4BfMm4zdPmBcj3XAiw9xGJCFuts0xowX9uSqnzT6 ITlVA9VHWlm030TFYp0h2HYjuzpVrKNw06OQ0AqHy7E932DlPr3us2y7ugWGXUgE Sxewc2+QXR2RGEHXVWfbymGr6uKtqwmwuyl8q7QQ/oqYGFK99WblRMT+6+K0kJI6 f/YzGyAqHRtN2gBZvRjX2BYVPdPKcGbNKqp27B9wOkz58NNRpF8= =PmkQ -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
