Hello Everyone,
I have a pseries machine running AIX 4.3.3 that has an invalid IP in /etc/hosts. During a boot the system hangs because it's trying to mount an NFS share to this invalid IP.
I've tried to boot the system from a mksysb (not sure if the device was defined as rmt0) and AIX CD... (0 Replies)
this is probably a bit dumb ...but i read somewhere that one of the nfs versions can be mounted on a windows 2003 server ..if yes ..does anyone know how this can be achieved (1 Reply)
Hi, How can i mount an NFS share on a solaris machine a filesystem ?
I have enabled nfs on a windows server and the shares has given read/write access to it to all the users. I would like to mount it on around 10 different solaris boxes with different versions of solaris.
Thanks in advance. (2 Replies)
Hello,
I have a few Ubuntu 9.10 laptops I'm trying to learn NFS sharing with. I am just experimenting on this right now, so no harsh words about the security of what I'm playing with, please ;)
Below are the configs
/etc/exports on host
/home/woodnt/Homeschool... (2 Replies)
Hi,
I want to mount an NFS Shared folder on Windows XP to vxWorks.
There doesnt seem to be a problem with the sharing.
Now, when i try to mount the directory onto vxWorks (it runs on a Tumbleweed card), using a mount script (.sh), the following is the print i see on Tera Term:
hostAdd... (0 Replies)
Folks,
I am trying to solve the following problem. I have a process on machine A running as root that needs to mount and access an NFS partition being exported from machine B.
However, I cannot have 'no_root_squash' option given on B, hence I see NFS requests from machine A end up as 'nobody'... (1 Reply)
Hi,
I am trying to access a NFS shared directory on Solaris 10 Server from a client which is RHEL 4 Server.
On the NFS Server, in /etc/dfs/, I added following line to dfstab file.
& then ran the following
On the client machine, while running the mount command, I am... (0 Replies)
Hi! All,
I am trying to mount a NFS share on my FreeNAS system onto my SCO OpenServer 5.0.6. I get the following error:
mount: cannot mount /: Connection Refused (error 115)
Has anyone been able to do this? (3 Replies)
I need a help of good people with effective bash script to mount nfs shared,
By the way I did the searches, since i haven't found that someone wrote a script like this in the past, I'm sure it will serve more people.
The scenario as follow:
An NFS Client with Daily CRON , running bash script... (4 Replies)
I have a Solaris 10 server, I'm trying to mount a share from a Windows nfs server. If I add this entry (tst-walnut:/test_sap_nfs - /majid nfs - yes rw,soft) to my /etc/vfstab, then I can mount, but when I create a file by root:root, the file owner changes to... (1 Reply)
Discussion started by: Hiroshi
1 Replies
LEARN ABOUT DEBIAN
dhcping
dhcping(8) General Commands Manual dhcping(8)NAME
dhcping - send a DHCP request to DHCP server to see if it's up and running
SYNOPSIS
dhcping [-v] [-q] [-i] [-r] -t maxwait -c client-IP-address -s server-IP-address -h client-hardware-address [-g gateway-IP-address]
DESCRIPTION
This command allows the system administrator to check if a remote DHCP server is still functioning.
Options are:
-v Verbose, print some information.
-V Very verbose, print a lot of information.
-i Use DHCPINFORM packets.
-r Use DHCPREQUEST packets (default behaviour).
-q Quiet, print nothing on the screen.
-t maxwait
Maximum time to wait for an answer from the server in seconds. Default is 3 seconds.
-c client-IP-address
Request this IP address. Note that this is also the IP address the answer will be sent to.
-s server-IP-address
Send the DHCP packet to this IP address.
-h client-hardware-address
Use this hardware-address in the DHCP request. It can be up to sixteen octets separated by colons (i.e. 01:02:03:04)
-g gateway-IP-address
Use this IP address for the gateway IP address in the DHCP packet. This option is currently broken.
RETURN VALUES
If everything goes okay, it returns 0. If there went something wrong, it returns 1.
SETUP
This program should be installed setuid root or ran by root only. See SECURITY for more information.
On your DHCP server, add these lines to the dhcpd.conf:
host <your monitoring host FQDN> {
hardware ethernet <your monitor host mac address>;
fixed-address <your monitoring host IP address>;
}
Then try it:
$ dhcping -c your monitoring host IP address
-s your DHCP server IP address
-h your monitor host mac address
It will either respond with "no answer" or "Got answer from: your DHCP server IP address"
The DHCP server logfile will give:
DHCPREQUEST for 192.168.1.1 from 00:20:18:56:29:8f via ed0
DHCPACK on 192.168.1.1 to 00:20:18:56:29:8f via ed0
DHCPRELEASE of 192.168.1.1 from 00:20:18:56:29:8f via ed0 (found)
Running in DHCPINFORM mode with -i:
If you see "DHCPINFORM from 192.168.1.1 via xl0: not authoritative for subnet 192.168.1.0", you should add the authoritative statement to
the subnet, See dhcpd.conf(5) for details.
When running in very verbose mode, dhcping tries to dump all data of the send and received DHCP packets. It will first dump the packet in
hex-format, then decodes the header and finally the options.
HOW IT WORKS
The client either sends a DHCPREQUEST or DHCPINFORM packet to the server and waits for an answer. Then, if a DHCPREQUEST was send, it will
send a DHCPRELEASE back to the server.
SECURITY
This program is installed setuid root as it requires the privileges to bind itself to port 68 (bootpc). Root privileges are dropped as soon
as the program has bound itself to that port.
BUGS
Currently (this may, or may not, change in the future) the ISC DHCP daemon does not write leases with a fixed IP address in the
dhcpd.leases file.
DHCPINFORM packets can only be used on subnets the server is authoritative for. If the monitoring script runs on a subnet the server isn't
authoritative for, it should use the DHCPREQUEST packets. I also experienced some problems with ISC DHCPD v2 servers, but that is also in
the README of it.
The -V option is still working, but shouldn't be used for debugging of the packets. Better use dhcpdump(8) for that, which is available on
my website. I wanted to remove it, but decided only to do it from the documentation, not from the code. Maybe I'll need it one day for
debugging.
AUTHOR
Edwin Groothuis, edwin@mavetju.org (http://www.mavetju.org)
SEE ALSO dhcpd(8), dhclient(8), dhcpd.conf(5), dhcpdump(8)3rd Berkeley Distribution January 27, 2002 dhcping(8)