<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div style="color: rgb(0, 0, 191);"><span>Hi Kaz, <br></span></div><div style="color: rgb(0, 0, 191);"><br><span></span></div><div style="color: rgb(0, 0, 191);"><span>Thank you for your reply. </span><span></span><span><span style="font-weight: bold; font-style: italic;">BG_IP</span> returns </span>an IP address with <span style="font-style: italic; font-weight: bold;">zepto-vn-eval/mosatest</span><span> profile. <br></span></div><div style="color: rgb(0, 0, 191);"><span><br></span></div><div style="color: rgb(0, 0, 191);"><span>Anyway a quick question:</span></div><div style="color: rgb(0, 0, 191);"><span><br></span></div><div><span style="color: rgb(0, 0, 191);"></span><span style="color: rgb(0, 0, 191);">It seems the IP returned on a compute-node with <span style="font-weight: bold; font-style: italic;">zeptoos </span>profile
is different than </span><span style="color: rgb(0, 0, 191);">associated I/O node (Please see below). May be I didnt understand something correctly and I would be very happy if you can provide some explanation for my observation. </span><br></div><div><br></div><div> <span style="font-weight: bold; text-decoration: underline; color: rgb(128, 0, 0);">In IO-node</span></div><div style="color: rgb(128, 0, 0);"><br></div><div style="color: rgb(128, 0, 0);">/gpfs/home/emalayan $ hostname<br>ion-5<br>/gpfs/home/emalayan $ hostname -i<br>172.16.3.5 </div><div><br></div><div style="font-weight: bold; text-decoration: underline; color: rgb(128, 0, 0);">In compute node</div><div style="color: rgb(128, 0, 0);">/ # hostname<br>172.18.1.19</div><div style="color: rgb(128, 0, 0);"><br></div><div style="color: rgb(128, 0, 0);">/ # cat /proc/personality.sh | grep 'BG_IP'<br>BG_IP=172.18.1.19<br></div><div><br></div><div style="color: rgb(0, 0,
191);"><br></div><div style="color: rgb(0, 0, 191);">Thank you</div><div><span style="color: rgb(0, 0, 191);">Emalayan</span><br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Kazutomo Yoshii <kazutomo@mcs.anl.gov><br> <b><span style="font-weight: bold;">To:</span></b> zeptoos@lists.mcs.anl.gov <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, 3 March 2012 6:52 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [ZeptoOS] hostname returns none in Surveyor<br> </font> </div> <br>Hi Emalayan,<br><br>The zeptoos profile returns the IP address of associated I/O node,<br>which is kind of wrong in my opinion (influence of IBM CNK).<br>ifconfig on compute nodes returns CN's IP
address, which is correct.<br>e.g. tun0 192.168.1.64<br><br>If you want to find associated ION's IP address from CNs,<br>do something like this.<br><br>$ grep BG_IP= /proc/personality.sh<br><br>- kaz<br><br>On 03/03/2012 08:25 PM, Emalayan Vairavanathan wrote:<br>> Hi All,<br>><br>> I am trying to run some experiments in Surveyor. The software I am using<br>> gets the IP-address of compute-nodes using hostname command.<br>><br>> With zepto-vn-eval/mosatest profile hostname command returns none.<br>> But with zeptoos profile hostname returns the correct IP address.<br>><br>> Is this due to some configuration issues in zepto-vn-eval/mosatest<br>> profile?As a workaround I tired to use ifconfig with both profiles, but<br>> it seems ifconfig is not returning the correct IP address.<br>><br>> Is there any command / files which I can used to retrieve the hostname<br>> on compute nodes? I have pasted the console output
with both profiles<br>> below. Please let me know if you need more details.<br>><br>> Thank you<br>> Emalayan<br>><br>><br>> =======================With zeptoos profile ===============================<br>><br>> / # hostname<br>> 172.18.3.19<br>> / #<br>> / # cat /proc/sys/kernel/hostname<br>> 172.18.3.19<br>> / #<br>> / #<br>> / # ifconfig -a<br>> lo Link encap:Local Loopback<br>> inet addr:127.0.0.1 Mask:255.0.0.0<br>> UP LOOPBACK RUNNING MTU:16436 Metric:1<br>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:0<br>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)<br>><br>> tun0 Link encap:UNSPEC HWaddr<br>> 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00<br>> inet addr:192.168.1.64 P-t-P:192.168.1.254 Mask:255.255.255.255<br>> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:65535 Metric:1<br>>
RX packets:2662 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:1772 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:500<br>> RX bytes:140206 (136.9 KiB) TX bytes:125412 (122.4 KiB)<br>><br>><br>><br>> =======================With zepto-vn-eval/mosatest profile<br>> ===============================<br>><br>> /etc # hostname<br>> (none)<br>> /etc #<br>> /etc # cat /proc/sys/kernel/hostname<br>> (none)<br>> /etc #<br>> /etc # ifconfig -a<br>> eth0 Link encap:Ethernet HWaddr 00:80:46:00:00:00<br>> BROADCAST MULTICAST MTU:1500 Metric:1<br>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:1000<br>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)<br>><br>> eth1 Link encap:Ethernet HWaddr 00:80:47:00:00:00<br>> BROADCAST MULTICAST MTU:1500 Metric:1<br>> RX packets:0 errors:0
dropped:0 overruns:0 frame:0<br>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:1000<br>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)<br>><br>> lo Link encap:Local Loopback<br>> inet addr:127.0.0.1 Mask:255.0.0.0<br>> inet6 addr: ::1/128 Scope:Host<br>> UP LOOPBACK RUNNING MTU:16436 Metric:1<br>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:0<br>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)<br>><br>> sit0 Link encap:IPv6-in-IPv4<br>> NOARP MTU:1480 Metric:1<br>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:0<br>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)<br>><br>> tun0 Link encap:UNSPEC HWaddr<br>> 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00<br>> inet addr:192.168.1.64
P-t-P:192.168.1.254 Mask:255.255.255.255<br>> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:65535 Metric:1<br>> RX packets:965 errors:0 dropped:0 overruns:0 frame:0<br>> TX packets:627 errors:0 dropped:0 overruns:0 carrier:0<br>> collisions:0 txqueuelen:500<br>> RX bytes:50984 (49.7 KiB) TX bytes:50530 (49.3 KiB)<br>><br><br><br><br> </div> </div> </div></body></html>