Btw I managed to work around this issue by setting eth1 to use DHCP and eth0 to send DHCP_HOSTNAME using a postscript.
Cheers, Sandra From: Sandra Maksimovic Sent: Tuesday, 30 October 2018 6:30 PM To: 'xCAT Users Mailing list' <xcat-user@lists.sourceforge.net> Subject: RE: [xcat-user] unexpected hostname Hi Yuan, Just to let you know, it seems that when I remove otherinterfaces=”mgt0-pub:172.16.13.99,mgt0-data:10.50.113.99” from the mgt0 definition, the /etc/hosts file does not regenerate with mgt0-pub or mgt0-data entries, only mgt0 and its fqdn is listed. The xcat servicenode should be managing nodes over the 10.40.0.0/24 network, however, I don’t think this has been setup properly because the servicenode table is blank. A lot of this new cluster’s configuration has been carried over from our current prod iteration so I’m not sure whether some of these definitions are still relevant. The /var/lib/dhclient directory is missing the dhclient.leases file but contains the following: # cat chrony.servers.eth0 10.40.115.100 iburst # cat ntp.conf.predhclient.eth0 <blank> The IP 10.40.115.100 is the management NIC on my xCAT server, which seems to indicate the correct provisioning network… I’ve just noticed that when I run ‘dhclient’ manually on the ‘mgt0-pub’ node the leases file appears along with some others… dhcp-server-identifier on eth0 (which is the mgt/provisioning NIC on the 10.40.0.0 net) is 10.40.115.100 host-name is “mgt0” I’m now wondering what would have stopped this information from being generated during deployment? And would this have managed to impact the hostname? Many thanks, Sandra From: Yuan Y Bai <by...@cn.ibm.com<mailto:by...@cn.ibm.com>> Sent: Monday, 29 October 2018 4:40 PM To: xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net> Cc: xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net> Subject: Re: [xcat-user] unexpected hostname Hi Sandra From your node definition, `nichostnamesuffixes.eth1=-pub nicips.eth1=172.16.13.99` will generate `172.16.13.99 mgt0-pub ......` entry in /etc/hosts file. No need to `mgt0-pub:172.16.13.99` in otherinterfaces. And you use service node, `servicenode=xcat`, which network service node use? Could you login `mgt0-pub` and check lease file under directory `/var/lib/dhclient` to see what are `dhcp-server-identifier` and `host-name`? It seems `mgt0` node get hostname `mgt0-pub` from 172.xx.xx.xx DHCP server. The provision network should 10.xx.xx.xx network. Best Regards -------------------------------------------------- Yuan Bai (白媛) CSTL HPC System Management Development Tel:86-10-82451401 E-mail: by...@cn.ibm.com<mailto:by...@cn.ibm.com> Address: IBM ZGC Campus. Ring Building 28, ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District, Beijing P.R.China 100193 IBM环宇大厦 北京市海淀区东北旺西路8号，中关村软件园28号楼 邮编:100193 ----- Original message ----- From: Sandra Maksimovic <sandra.maksimo...@mcri.edu.au<mailto:sandra.maksimo...@mcri.edu.au>> To: "'xcat-user@lists.sourceforge.net'" <xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>> Cc: Subject: Re: [xcat-user] unexpected hostname Date: Mon, Oct 29, 2018 12:15 PM Hi Bin, Thanks for your response. mgt0 and mgt0-pub do not point to the same IP address nor are they in the same subnet. Please see the output below: Object name: mgt0 arch=x86_64 authdomain=mcri.edu.au chain=standby conserver=xcat currchain=boot currstate=boot domaintype=activedirectory groups=mgt,vm hostnames=mgt0 ip=10.40.113.99 mac=<snip> mgt=esx netboot=pxe nfsdir=/install nfsserver=xcat nichostnamesuffixes.eth0=-mgmt nichostnamesuffixes.eth1=-pub nichostnamesuffixes.eth2=-data nicips.eth0=10.40.113.99 nicips.eth1=172.16.13.99 nicips.eth2=10.50.113.99 nicnetworks.eth0=Management nicnetworks.eth1=Public nicnetworks.eth2=Data nictypes.eth0=Ethernet nictypes.eth1=Ethernet nictypes.eth2=Ethernet os=centos7.5 otherinterfaces=mgt0-pub:172.16.13.99,mgt0-data:10.50.113.99 ou=<snip> postbootscripts=otherpkgs,<snip> postscripts=syslog,remoteshell,syncfiles,setupntp,confignics,<snip> profile=mgt provmethod=centos7-mgt routenames=14NetRoute,MySQLUCSCRoute servicenode=xcat status=failed statustime=10-29-2018 14:14:01 updatestatus=failed updatestatustime=10-29-2018 13:53:40 FYI some of our postscripts are failing during deployment which is why the updatestatus=failed. Also, thanks Brian for your suggestion, I shall look into this further regarding the NIC setup. I did a quick test and this doesn’t appear to be what I’m after at this stage since the deployed node’s hostname is unaffected when specifying the nicaliases. Thanks, Sandra ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, October 26, 2018 5:17 PM, Bin XA Xu <bx...@cn.ibm.com<mailto:bx...@cn.ibm.com>> wrote: Hi Sandra, Is the mgt0 and mgt0-pub pointing to the same IP address, or in the same subnet? And what's your `mgt01` definition, you can use `lsdef mgt01` to get the information and hide the sensitive attributes. And Yuan, do you have more suggestions? Bin Xu HPC Software Development Software Defined Infrastructure, IBM Systems Phone: 86-010-82454067 E-mail: bx...@cn.ibm.com<mailto:bx...@cn.ibm.com> ----- Original message ----- From: Sandra Maksimovic via xCAT-user <xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>> To: "xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>" <xcat-user@lists.sourceforge.net<mailto:xcat-user@lists.sourceforge.net>> Cc: Sandra Maksimovic <sm....@pm.me<mailto:sm....@pm.me>> Subject: [xcat-user] unexpected hostname Date: Thu, Oct 25, 2018 11:35 PM Hi all, xCAT/HPC/list newbie here! I have recently configured an xCAT node and am attempting to provision a separate management node, but for some reason xCAT is sort of not applying the expected hostname. I'd like the resulting hostname on the node to just be "mgt0", but instead it's tacking on the public NIC suffix as well as the FQDN, i.e. mgt0-pub.meerkat.mcri.edu.au The cluster is entirely CentOS7 based and will be eventually utilising MOAB and PBS/Torque for scheduling and resource management. The version of xCAT for this particular build is v2.14.4. I've trawled through the debug enabled build logs and stepped through post.rh.common and from what I can tell the node should just be named "mgt0" (sans all suffixes). Also, the DNS on the xCAT node contains entries for "mgt0", "mgt0-data", "mgt0-pub", but (if this is indeed the issue) I'm not sure why xCAT would have selected "mgt0-pub" to hand out when the node is being provisioned via its management IP which is actually associated with "mgt0" (as opposed to its public one which is associated with "mgt0-pub"). Any ideas on other avenues that might be worth investigating? Also, please feel free recommend some useful resources for learning xCAT and/or HPC in general! I'm already heavily utilising the official xCAT docs and the Sourceforge Wiki/mailing list search... Cheers, Sandra Sent from ProtonMail<https://protonmail.ch>, encrypted email based in Switzerland. _______________________________________________ xCAT-user mailing list xCAT-user@lists.sourceforge.net<mailto:xCAT-user@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/xcat-user<https://lists.sourceforge.net/lists/listinfo/xcat-user> This e-mail and any attachments to it (the "Communication") are, unless otherwise stated, confidential, may contain copyright material and is for the use only of the intended recipient. If you receive the Communication in error, please notify the sender immediately by return e-mail, delete the Communication and the return e-mail, and do not read, copy, retransmit or otherwise deal with it. 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