Hot code loading

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(Load the code)
(Start erlang as a node)
Line 7: Line 7:
 
#!/bin/sh -e
 
#!/bin/sh -e
 
#zhone > /tmp/zhone.log 2>&1 &
 
#zhone > /tmp/zhone.log 2>&1 &
/home/root/cean/start.sh -setcookie SFEWRG34AFDSGAFG35235 -sname moko -noshell -pa /home/root/trunk -s main start > debug.txt
+
/home/root/cean/start.sh -setcookie SFEWRG34AFDSGAFG35235 -name neo@192.168.0.202 -noshell -pa /home/root/trunk -s main start > debug.txt
 
renice -3 $!
 
renice -3 $!
 
exit 0
 
exit 0
Line 15: Line 15:
 
Every erlang node in your network should have a unique name, and a common cookie.
 
Every erlang node in your network should have a unique name, and a common cookie.
  
 +
 +
From your host erlang console try
 +
<pre
 +
net_adm:ping('neo@192.168.0.202').
 +
</pre>
 +
The response should be 'pong' if you have a successful connection - if not the response is 'pang'
  
 
=== Load the code ===
 
=== Load the code ===
 
To carry out Hot Code Loading you start a an erlang node on your host (remember to set a different name and to use the same cookie) and from the host erlang shell type nl(your_modulename). Substitute your_modulename with the name of the module you want to load into the virtual machine.
 
To carry out Hot Code Loading you start a an erlang node on your host (remember to set a different name and to use the same cookie) and from the host erlang shell type nl(your_modulename). Substitute your_modulename with the name of the module you want to load into the virtual machine.

Revision as of 19:24, 5 December 2008

To change a running system

Start erlang as a node

This is my /etc/X11/Xsession.d/80zhone. As you can see the erlang node's got a name "-sname moko" (a running erlang virtual machine is called an erlang node). And it's got a cookie "-setcookie SFEWRG34AFDSGAFG35235".

#!/bin/sh -e
#zhone > /tmp/zhone.log 2>&1 &
/home/root/cean/start.sh -setcookie SFEWRG34AFDSGAFG35235 -name neo@192.168.0.202 -noshell -pa /home/root/trunk -s main start > debug.txt
renice -3 $!
exit 0


Every erlang node in your network should have a unique name, and a common cookie.


From your host erlang console try

The response should be 'pong' if you have a successful connection - if not the response is 'pang'

=== Load the code ===
To carry out Hot Code Loading you start a an erlang node on your host (remember to set a different name and to use the same cookie) and from the host erlang shell type nl(your_modulename). Substitute your_modulename with the name of the module you want to load into the virtual machine.
Personal tools

To change a running system

Start erlang as a node

This is my /etc/X11/Xsession.d/80zhone. As you can see the erlang node's got a name "-sname moko" (a running erlang virtual machine is called an erlang node). And it's got a cookie "-setcookie SFEWRG34AFDSGAFG35235".

#!/bin/sh -e
#zhone > /tmp/zhone.log 2>&1 &
/home/root/cean/start.sh -setcookie SFEWRG34AFDSGAFG35235 -sname moko -noshell -pa /home/root/trunk -s main start > debug.txt
renice -3 $!
exit 0


Every erlang node in your network should have a unique name, and a common cookie.


Load the code

To carry out Hot Code Loading you start a an erlang node on your host (remember to set a different name and to use the same cookie) and from the host erlang shell type nl(your_modulename). Substitute your_modulename with the name of the module you want to load into the virtual machine.