Solaris Networking Script

Hi everyone,
I am charged with changing the ip addresses on 49 servers.
Please is there a way i can automate this process via a script?
If possible how do i go about it.
Thanks

Well, you probably can, but that doesn't mean you should :) At least not if you are thinking of running the script from one host in order to change the IP of all the remote host, for one thing the script would stop executing once you change its address, and if you make a mistake in your script you would then end up making a lot of hosts inaccessible.
There are two things you have to do, change the configuration on disk and change the running configuration, the configuration on the disk is normally edited by changing the files:
/etc/hostname.<interface>
/etc/hosts
/etc/defaultrouter
/etc/netmasks
and sometimes:
/etc/inet/ipnodes
To change the running configuration you would use ifconfig and route (if you have to change the default router).
One method here could be to change the configuration files and then reboot, just to be certain that the configuration on the disk is correct.
You could also write a script which changes both the running configuration and the files, but i would suggest that you run the script locally from the console.
.7/M.

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My Network script (the one in /etc/rc.d/network stopped working but manually using the if/iw config tools works.
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:: Starting Network [BUSY]
> Could not associate wlan0 - try increasing WIRELESS_TIMEOUT and check network is WEP or has no security
SIOCADDRT: No such process
rc.conf
eth0="dhcp"
eth1="dhcp"
wlan0="dhcp"
wlan_wlan0="wlan0 essid dd-wrt" # Unencrypted
INTERFACES=(!eth0 !eth1 wlan0)
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ROUTES=(gateway)
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dhcpcd: wlan0: broadcasting for a lease
dhcpcd: wlan0: offered 192.168.1.109 from 192.168.1.1
dhcpcd: wlan0: acknowledged 192.168.1.109 from 192.168.1.1
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And what happens if you do increase the value of "WIRELESS_TIMEOUT" ?
You can add this variable to your rc.conf file (with something like "WIRELESS_TIMEOUT=4") or by editing /etc/rc.d/network.
EDIT: alternatively, you could put this value in the /etc/conf.d/wireless file, which might be "cleaner".
Last edited by hexanol (2009-11-29 14:27:18)

Persistent Network script?

One of the issues that most Linux distros, including Arch, have is that during the boot process, there is only one dhcp lease request issued from the init scripts. This poses a problem when:
- The user boots the computer and the router at the same time. As the router needs some time to initialize, when Arch boots and runs the network script, the dhcp lease request from the network script does not arrive at the router, because the router is still busy initializing, hence the network script fails, and there is no network connection.
I can imagine that the network connection also gets lost when:
- A subsequent dhcp lease request gets lost. Dhcp lease is not sustained.
- IP address collisions. Network communication is disrupted.
- Router goes offline and back upline and requires that all clients re-request a dhcp lease.
I have not investigated these cases, maybe someone can comfirm this?
Anywayz, in all these cases, a dhcp lease re-request fixes the problem, alas, this does not happen in the current situation.
The network script should persistently try to gain a dhcp lease, when there is no dhcp lease received as of yet, to prevent this behaviour. This is the case in Windows.
Maybe there is a common solution to this problem already?
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Last edited by OutOfPhase (2007-04-21 18:04:09)

don't reinvent the wheel: use ifplugd.
ifplugd waits for link events/link status from the network card, and takes action accordingly.
configure eth* in rc.conf, do not start them, and add ifplugd to daemons. all your problems vanish at once. I even use it for wireless, and this gives me a totally event driven, minimal, layered, async configuration for maximal ease of use:
/etc/rc.conf
lo="lo 127.0.0.1"
eth0="dhcp"
wlan0="dhcp"
INTERFACES=(lo)
daemons=( ... ifplugd wpa_supplicant ...)
/etc/ifplugd/ifplugd.conf
NET_IFS="eth0 wlan0"
ARGS="-fwI -u0 -d10"
ARGS_wlan0="-MwI -u5 -d5"
I won't detail the wpa_supplicant daemon script, as it's not relevant to your situation.
I always wondered why people bothered with baroque sequential (start A, an if it succeeded start b else do that and... etc...) solutions (like in gentoo, see the size of their net scripts!) when such layered async solutions are both easy, stable, and hassle-free (even supports roaming OOTB)
Last edited by lloeki (2007-04-21 19:56:11)

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Sunay has been in India for the past few weeks and has actually been working! He's just finished the treatise on Solaris Networking which will become a new section of the Solaris Internals book.
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"Rafi Jacoby" <[email protected]> wrote in message
news:3a0c6cd9$[email protected]..
>
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#!/bin/sh
clear
echo
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echo "is it morning please answer yes or no"
read timeofday
if [ $timeofday="yes" ]
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Fixed:
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hello!
i want to write a bash script for my wireless lan. for this i need the information, if the network daemon has connected successfully or failed.
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iggy wrote:
hello!
i want to write a bash script for my wireless lan. for this i need the information, if the network daemon has connected successfully or failed.
but there is a big problem: starting network success' every time, whether there was an error or not:
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Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; No such device.
[FAIL]
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$ ls /var/run/daemons/
... network ...
can someone help me please? how can i realize that "::Starting Network ..." also fails and the script returns an exit status 1?
thanks for your help, maybe we can improve the script. but i'm not a geek in bash!
mfg iggy
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Solaris Networking Script

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