Troubleshoot Downloading - Multicast - Revision history

Wayne-workman.28155: /* Testing Multicast */

2016-07-16T01:50:37Z

‎Testing Multicast

Wayne-workman.28155: /* Testing Multicast */ added how to do debug.

2016-07-16T01:49:05Z

‎Testing Multicast: added how to do debug.

Wayne-workman.28155: /* Multicast's roles in FOG */

2016-06-07T23:07:06Z

‎Multicast's roles in FOG

Wayne-workman.28155: /* Multicast's roles in FOG */

2016-06-07T23:06:52Z

‎Multicast's roles in FOG

Wayne-workman.28155: /* Multicast's roles in FOG */

2016-06-07T23:06:05Z

‎Multicast's roles in FOG

Wayne-workman.28155: /* Notes */

2016-06-07T23:00:59Z

‎Notes

Wayne-workman.28155 at 22:58, 7 June 2016

2016-06-07T22:58:18Z

Wayne-workman.28155: /* Testing Multicast */

2016-06-07T22:52:59Z

‎Testing Multicast

Wayne-workman.28155: /* Testing Multicast */

2016-06-07T22:51:01Z

‎Testing Multicast

Wayne-workman.28155: /* Testing Multicast */

2016-06-07T22:50:25Z

‎Testing Multicast

@@ Line 56: / Line 56: @@
 </pre>
-Note we are specifying the port 9000, as this is the default used by udp-sender.
+Note we are specifying the port 9000, as this is the default used by udp-sender. Feel free to remove the portbase argument, or try different ports.
 On the secondary Linux machine, we would start the receiving process with this:

← Older revision		Revision as of 01:49, 16 July 2016
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	FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this, or do a download debug task in fog as well. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora 22 and higher would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 and older or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>		FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this, or do a download debug task in fog as well. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora 22 and higher would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 and older or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>
		+
		+	The easiest method is to use the "Debug deploy" from fog's web interface on a host. Select a host, go to basic tasks, click download, and on the confirmation page you will see a checkbox that says "debug". Tick the checkbox and then confirm. The host will network boot to a linux shell (in FOS, Fog Operating System). You can then do the steps below.

@@ Line 6: / Line 6: @@
 = Multicast's roles in FOG =
-Multicasting in FOG uses udpcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer, although the bandwidth savings are large when multicasting to many computers at once.
+Multicasting in FOG uses udpcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer, although the bandwidth and time savings are large when multicasting to many computers at once.
 = The Basics =

@@ Line 6: / Line 6: @@
 = Multicast's roles in FOG =
-Multicasting in FOG uses udpcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer.
+Multicasting in FOG uses udpcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer, although the bandwidth savings are large when multicasting to many computers at once.
 = The Basics =

@@ Line 6: / Line 6: @@
 = Multicast's roles in FOG =
-Multicasting in FOG uses UDPcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer.
+Multicasting in FOG uses udpcast to send a single image to multiple computers using only slightly more bandwidth than sending the image to a single computer or unicast. Multicasting to many computers will be slightly slower than unicasting to a single computer.
 = The Basics =

← Older revision		Revision as of 23:00, 7 June 2016
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	= Notes =		= Notes =

−		+	After any configuration changes in the web interface or in the FOG system's base OS, restart the FOGMulticastManager service and try again.
−	~~Check that~~ the interface ~~setting for~~ the ~~image’s relevant storage node master is set to the actual interface name of that~~ system~~. If not~~, ~~change it and~~ restart the FOGMulticastManager service.

← Older revision		Revision as of 22:58, 7 June 2016
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−	~~Article under construction. Below, you will find notes / gibberish that I'm collecting to make into an article.~~

	See also: [[Multicast]]		See also: [[Multicast]]

@@ Line 63: / Line 63: @@
 </pre>
-When a connection has been established between the receiving host and the server, you'll see a message saying it's ready to send and to press any key to continue. This message shows up on both the target host and the server, and the sending may be started from either. Once you press any key, you should see the <font color="red">/opt/fog/.fogsettings</font> file's contents outputted to the screen on the receiving host.
+When a connection has been established between the receiving host and the server, you'll see a message saying it's ready to send and to press any key to continue. This message shows up on both the target host and the server, and the sending may be started from either. Once you press any key, you should see the <font color="red">/opt/fog/.fogsettings</font> file's contents outputted to the screen on the receiving host. Seeing the file's contents means the test succeeded. If these things don't happen, the test failed.
 = Logs =

← Older revision		Revision as of 22:51, 7 June 2016
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	= Testing Multicast =		= Testing Multicast =

−	FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this, or do a download debug task in fog as well. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>	+	FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this, or do a download debug task in fog as well. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora 22 and higher would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 and older or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>

← Older revision		Revision as of 22:50, 7 June 2016
Line 42:		Line 42:
	= Testing Multicast =		= Testing Multicast =

−	FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>	+	FOG uses udp-sender to send multicast traffic. We can test multicast functionality manually, and we will need two Linux machines to do it (your FOG server and another). The distribution doesn't matter on either, and you may live-boot a Linux disk like Fedora or Ubuntu to use as the secondary machine to accomplish this, or do a download debug task in fog as well. Ubuntu nor Fedora comes with udpcast installed but you may install it easily with <font color="red">sudo apt-get install udpcast -y</font> The command for fedora would be <font color="red">sudo dnf install udpcast -y</font> and for CentOS 7 or Fedora 21 and older it would be <font color="red">sudo yum install udpcast -y</font>