Website RTO. What monitoring can I setup and how to track issue? Post: 303019063

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Top Forums Web Development Website RTO. What monitoring can I setup and how to track issue? Post 303019063 by bakunin on Friday 22nd of June 2018 07:13:12 AM

06-22-2018

Registered User

Quote:

Originally Posted by solaris_1977

2- How do I track, at what level it is failing ? I checked AWS instance and it was always up and no downtime on that Centos linux.

I don't think it is a matter of tools but a matter of organised debugging: let us first consider what could have gone wrong:

1) the server('s OS) - you ruled that out

2) the application software, i.e. Apache and/or whatever works on top of it.

3) the network connection of your server: possible reasons include network congestion, broadcast storms, intermittent hardware outage, ...

4) the connection between you and your server: caching mechanisms like Cloudflare may influence the connectivity until the cache is filled.

This off the top of my head list is probably neither complete nor detailed enough. You are welcome to edit it until it fits your environment. Once you have done that you start ruling out one point or sub-point after the other: for instance the application stack you use could be tested by a client working from within the server automatically and so foregoing the network connections otherwise necessary. Once you have established that you move on to the next point in the list.

Debugging is just the organised application of logic and a few usually rather simple tests once you have properly envisioned how things are supposed to work and what depends on what.

I hope this helps.

bakunin

bakunin

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LEARN ABOUT SUSE

libgphoto2_port

LIBGPHOTO2_PORT(3)					  The gPhoto2 Reference (the man					LIBGPHOTO2_PORT(3)

NAME

       libgphoto2_port - cross-platform port access library

SYNOPSIS

       #include <gphoto2/gphoto2_port.h>

DESCRIPTION

       The libgphoto2_port library was written to provide libgphoto2(3) with a generic way of accessing ports. In this function, libgphoto2_port
       is the successor of the libgpio library.

       Currently, libgphoto2_port supports serial (RS-232) and USB connections, the latter requiring libusb to be installed.

       The autogenerated API docs will be added here in the future.

ENVIRONMENT VARIABLES

       IOLIBS If set, defines the directory where the libgphoto2_port library looks for its I/O drivers (iolibs). You only need to set this on
	      OS/2 systems and broken/test installations.

       LD_DEBUG
	      Set this to all to receive lots of debug information regarding library loading on ld based systems.

       USB_DEBUG
	      If set, defines the numeric debug level with which the libusb library will print messages. In order to get some debug output, set it
	      to 1.

SEE ALSO

       libgphoto2(3), The gPhoto2 Manual, [1]gphoto website, automatically generated API docs, [2]libusb website

AUTHOR

       The gPhoto2 Team.
       Hans Ulrich Niedermann <gp@n-dimensional.de>. (man page)

REFERENCES

       1. gphoto website
	  http://www.gphoto.org/

       2. libusb website
	  http://libusb.sourceforge.net/

								    08/16/2006							LIBGPHOTO2_PORT(3)