"localhost:10.0" is only redirecting to the local X server, there is no X server started on the ssh-target (see scenario terminal 2b/6b). "screens" is referring the different virtual monitors (framebuffers) of the X server. The term "both displays" was referring to ":0.0" on the local computer ("local display") being equal to "localhost:10.0" on the ssh-target ("TCP display"). What are the relations and differences between X server, display and screen?Ī display just refers to some X server somewhere. needs to be configured to allow this (beware X11 is practically not encrypted), and permissions for the X server need to be granted manually (xhosts or Xauthority). The main problem here is, that your network/firewall/etc. Keep the router away from your computer monitor, fans, and power strips. If not, you can go back to step 1 to either undo the restore process, or try another date. Choose a date when the computer was working correctly, and click Next to restore the system files from that date. You can also directly send X11 commands over the network, without setting up a ssh-tunnel first. Press +R to show the Run box, type RSTRUI and click OK. localhost) in front of the display/screen#, X11 will also communicate via TCP instead of the memory. There is no additional X server started, and permissions for X-server #0 on hostA are handled automatically by ssh. Usually the first 10 displays are reserved for "real" servers, therefore ssh remaps display #10 (next user connecting with ssh -X while you're logged in, would then get #11). In this case, TCP Port 6010 (6000+display#) on hostB is forwarding the traffic to Port 6000 (X server #0) on hostA. If you ssh onto a server, and enable X11-forwarding via the "-X" parameter, a tunnel is automatically created through the ssh-connection. Otherwise, it will not be set at all (reason see terminal 3). If you ssh onto some server, usually the display will be set automatically to the local X server, if there is one available. If you open a local terminal, and set the display to :0.0 (default) or :0.1, the drawing calls for your graphical programs will be sent to the local X server directly via the memory. hostC is a headless server without any monitors. 'localhost:10.0' is only redirecting to the local X. 'screens' is referring the different virtual monitors (framebuffers) of the X server. The term 'both displays' was referring to ':0.0' on the local computer ('local display') being equal to 'localhost:10.0' on the ssh-target ('TCP display'). hostB has two X servers, where the second one has no physical display (e.g. A display just refers to some X server somewhere. Usually there would be only one server with one screen (:0.0), which spans across all your monitors (makes multi-monitor applications way easier). In this example you have a local X11-server with two "screens" on your hostA. I will give you a visual example to explain the basics of X11 and what is going on in the background: What does "multiple screens" mean? Does a "screen" mean a display What does "the X server through both display" mean? Does a "display" NOT THAT WE'D WANT TO AVOID IT INDEED, IN THIS AGE OF l'S AND 0'S, THE ALGORITHM IS THE INVISIBLE, IkA UNFLAPPABLE, MOSTLY DEPENDABLE WORKHORSE BEHIND 1M. What are the relations and differences between X server, display and HOSTNAME:NUMBER accesses the server over TCP, which is slower and With ssh -X localhost, you can access the X server through bothĭisplays, but the applications will use a different method: :NUMBERĪccesses the server via local sockets and shared memory, whereas TCP displays, with a hostname before the.Local displays, with nothing before the.Two forms of X displays that you're likely to ever encounter: It's a screen number, but multiple screens are rarely used.) There are To this check I have added 2 'OR' statements regarding the 401 and 404 status code.If you run ssh -X localhost, you should see that $DISPLAY is This Check was working fine when I was only allowing the 200 status code. I have created a Web Scenario in Zabbix that accepts the following response codes: 200, 401, 404 (currently hosting some API's so these are very common) Currently they are considered to be "down" because they do not match the 200 response code. I am running some Zabbix Web Scenario's to gather information on certain websites and API's for some of the API's 401 and 404 status codes are acceptable and I want to adopt these in the trigger expression.
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