(verified 2010 Feb. / EOS 4.3.0 / DCS-7120T-4S 03.01)
Processes
ps command shows all processes very normally.
[admin@localhost /]$ ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 Feb06 ? 00:00:20 /sbin/init
root 2 0 0 Feb06 ? 00:00:00 [kthreadd]
root 3 2 0 Feb06 ? 00:00:01 [migration/0]
root 4 2 0 Feb06 ? 00:00:00 [ksoftirqd/0]
root 5 2 0 Feb06 ? 00:00:00 [watchdog/0]
root 6 2 0 Feb06 ? 00:00:00 [migration/1]
root 7 2 0 Feb06 ? 00:00:00 [ksoftirqd/1]
root 8 2 0 Feb06 ? 00:00:00 [watchdog/1]
root 9 2 0 Feb06 ? 00:00:00 [events/0]
root 10 2 0 Feb06 ? 00:00:01 [events/1]
root 11 2 0 Feb06 ? 00:00:00 [work_on_cpu/0]
root 12 2 0 Feb06 ? 00:00:00 [work_on_cpu/1]
root 13 2 0 Feb06 ? 00:00:15 [khelper]
root 102 2 0 Feb06 ? 00:00:00 [kblockd/0]
root 103 2 0 Feb06 ? 00:00:00 [kblockd/1]
root 108 2 0 Feb06 ? 00:00:00 [ata/0]
root 109 2 0 Feb06 ? 00:00:00 [ata/1]
root 110 2 0 Feb06 ? 00:00:00 [ata_aux]
.....
root 1474 1 0 Feb06 ? 00:00:00 ProcMgr-mast
root 1478 1474 0 Feb06 ? 01:29:39 ProcMgr-work
root 1492 1478 0 Feb06 ? 00:01:13 Launcher
root 1493 1478 0 Feb06 ? 01:12:50 Sysdb --conf
.....
root 1608 1 0 Feb06 ? 00:00:42 rsyslogd -c 3
root 1693 1 0 Feb06 ? 00:02:03 /usr/sbin/sshd
root 1719 1 0 Feb06 ? 00:00:00 xinetd -stayalive -pidfile /var/run/xinetd.pid
(...snip)
You can see Python script based programs;
ProcMgr-mast
ProcMgr-work
Launcher
Sysdb --conf
and more... EOS functionality is implemented by them.
The body of processes
These bodies are located under /usr/bin directory.
For example, Thermostat program is here;
---------
bash-3.2# cat /usr/bin/Thermostat
#!/usr/bin/env python
# Copyright (c) 2006 Arista Networks, Inc. All rights reserved.
# Arista Networks, Inc. Confidential and Proprietary.
import Fwk, Agent, Thermostat
def main():
thermostatContainer = Agent.AgentContainer( [ Thermostat.Thermostat ] )
thermostatContainer.runAgents()
if __name__ == "__main__":
main()
bash-3.2#
----------
It simply loads Thermostat class and starts it.
The real body of the Agent, Thermostat class and some parts are included there.
bash-3.2# head /usr/lib/python2.5/site-packages/Thermostat.py
# Copyright (c) 2006, 2007, 2008, 2009 Arista Networks, Inc. All rights reserved.
# Arista Networks, Inc. Confidential and Proprietary.
""" The Thermostat Agent is responsible for monitoring and
regulating the temperature and cooling of the system. """
import Fwk, Agent, EntityMib
import weakref, os
import Tracing
(...snip)
Directory list
/usr/bin/[A-Z]* : Some special commands such as Cli (login shell), EosInit and more.
/usr/lib/python2.5/site-packages/*.py : Basic Python programs are here.
/usr/lib/python2.5/site-packages/CliPlugin/*.py : EOS shell commands.
/usr/lib/tacc/map.d/ : Not sure about the inside but it looks like a library map or some.
Interesting files
/etc/Eos-release : version info
/etc/nsswitch.conf.Eos
/etc/pam.d/login.Eos
/etc/profile.d/Eos.sh
/etc/rc.d/init.d/EosStage1 (and 2 too)
/etc/sysconfig/iptables-config.Eos
/var/log/eos
/var/log/eos-console
/var/log/EosInit
