Hi Sandra, I cant speak to the xCat way of setting the hostname, as it just works for us.
Its possible that NetworkManager is setting your hostname based on DHCP, see this https://access.redhat.com/solutions/2816951 for more information. Cheers, Carl. On Thu, 14 Mar 2019 at 08:39, Sandra Maksimovic < sandra.maksimo...@mcri.edu.au> wrote: > Hi Bin, > > > > Please note that I am currently testing without any postscript > modification to the NICs since I would prefer to get it working this way. > Right now it’s just building with the information provided by xCAT. > > > > Here is the requested output: > > > > # hostnamectl > > Static hostname: localhost.localdomain > > Transient hostname: dev2-pub.meerkat.mcri.edu.au > > Icon name: computer-server > > Chassis: server > > Machine ID: 721ed6c3cf8144149d7671556f14c705 > > Boot ID: e3031b42f7234a5792510c5d61656869 > > Operating System: CentOS Linux 7 (Core) > > CPE OS Name: cpe:/o:centos:centos:7 > > Kernel: Linux 3.10.0-862.14.4.el7.x86_64 > > Architecture: x86-64 > > > > Do you know how a node would select its hostname normally? > > > > Thanks, > > Sandra > > > > *From:* Bin XA Xu <bx...@cn.ibm.com> > *Sent:* Wednesday, 13 March 2019 4:34 PM > *To:* xcat-user@lists.sourceforge.net > *Cc:* xcat-user@lists.sourceforge.net > *Subject:* Re: [xcat-user] unexpected hostname > > > > Hi Sandra, > > > > You have mentioned that there is a postscripts to modify eth3 network > config file to enable DHCP get the its IP from your organization dhcp > server, right? > > Does this organization dhcp server offer a hostname for the IP? > > > > BTW: what's output of `hostnamectl` on node `dev2`? > > > > *Bin Xu* > > > *HPC Software Development Software Defined Infrastructure, IBM Systems* > > *Phone: *86-010-82454067 > > *E-mail: *bx...@cn.ibm.com > > > > > > ----- Original message ----- > From: Sandra Maksimovic <sandra.maksimo...@mcri.edu.au> > To: "xcat-user@lists.sourceforge.net" <xcat-user@lists.sourceforge.net> > Cc: > Subject: Re: [xcat-user] unexpected hostname > Date: Wed, Mar 13, 2019 1:06 PM > > > Hi there, > > > > Unfortunately this issue has reared its ugly head again – this time on a > physical host. > > > > I’ve noticed a pattern, basically the host will always apply the DNS name > used for our ‘pub’ public network when I want it to default to the vanilla > ‘dev2’ mgmt net name. Here is an example of entries from the DNS: > > > > dev2 A 10.40.114.200 (eth0 – configured as dhcp on physical > host, handed out by xCAT’s DHCP server) > > dev2-pub A 172.16.14.200 (eth3 – deployed as dhcp on physical > host, handed out by our organisation’s DHCP server) > > dev2-data A 10.50.114.200 (eth4 – deployed as static on physical > host) > > dev2-obm A 10.60.114.200 (eth5 – deployed as static on physical > host) > > > > For some reason the server is always being deployed as ‘dev2-pub’. I know > I can get around this by using a postbootscript to overwrite the xCAT > applied config, but I’d prefer to not do this because I’d rather not have > to manage so many scripts. > > > > Is there some way I can ‘force’ xCAT to prefer a particular hostname over > another for a host? > > > > Please let me know if you need any more info! > > > > Thanks, > > Sandra > > > > *From:* Bin XA Xu <bx...@cn.ibm.com> > *Sent:* Friday, 2 November 2018 5:37 PM > *To:* xcat-user@lists.sourceforge.net > *Cc:* xcat-user@lists.sourceforge.net > *Subject:* Re: [xcat-user] unexpected hostname > > > > Sandra, > > > > Thanks for the information, we saw that you are using the esx to mange > your VMs. We don't have such environment, and Yuan tried to recreate your > problem on our own KVM based environment, but the issue is not seen. > > > > Whatever I'm glad that you've made a workaround successfully, and > Thanks for sharing your experience here. > > > > Regards, > > > > *Bin Xu* > > > *HPC Software Development Software Defined Infrastructure, IBM Systems* > > *Phone: *86-010-82454067 > > *E-mail: *bx...@cn.ibm.com > > > > > > ----- Original message ----- > From: Sandra Maksimovic <sandra.maksimo...@mcri.edu.au> > To: "xcat-user@lists.sourceforge.net" <xcat-user@lists.sourceforge.net> > Cc: > Subject: Re: [xcat-user] unexpected hostname > Date: Fri, Nov 2, 2018 11:37 AM > > > Hi Bin, > > > > In this case I’m only providing the MAC for eth0 for the mgt0 node, not > for any others. This is a special case to get around the fact that I’m > deploying to a VM which by nature does not have OBM capabilities, but since > I have access to the hypervisor directly this is a non-issue. > > > > On xCAT I’ve also only set one specific NIC for DHCP > (site.dhcpinterfaces=ens224) so it definitely should not be trying to hand > out IPs to any other NICs other than eth0 on the mgt0 node (both eth0 and > ens224 are configured to use the 10.40.0.0 management/provisioning network). > > > > Many thanks, > > Sandra > > > > *From:* Bin XA Xu <bx...@cn.ibm.com> > *Sent:* Friday, 2 November 2018 1:32 PM > *To:* xcat-user@lists.sourceforge.net > *Cc:* xcat-user@lists.sourceforge.net > *Subject:* Re: [xcat-user] unexpected hostname > > > > Sandra, > > > > So you have a public DHCP server which listening on eth1's subnet, > which can assign the right public IP and hostname (mgt0, instead of > mgt0-pub) . > > It is okay to workaround this. > > > > Normally, for xCAT deployed nodes, only provision nic will be set to > DHCP, other's are configured as static. And the provision NIC will get the > hostname(mgt0) from DHCP server on xCAT MN/SN. And Grep it just like below: > > > > ``` > > grep boston01 /var/lib/dhcpd/dhcpd.leases > host boston01 { > supersede server.ddns-hostname = "boston01"; > supersede host-name = "boston01"; > supersede conf-file = " > http://10.6.29.1/tftpboot/petitboot/boston01";; > > ``` > > I'm wondering that your dhcp serer on xCAT MN/SN also has the lease > for mgt0's eth1 if you also provide its MAC in mac table. > > If this the case, it is better to disable xCAT's dhcp serer listening > on eth1 as you have already an Corporate external DHCP server. > > > > You can set the site.dhcpinterfaces to which nics you want to > listening and `makedhcp -n` to regenerate the xcatd dhcp configuration, > `man site` for more detail information on that. > > > > > > *Bin Xu* > > > *HPC Software Development Software Defined Infrastructure, IBM Systems* > > *Phone: *86-010-82454067 > > *E-mail: *bx...@cn.ibm.com > > > > > > ----- Original message ----- > From: Sandra Maksimovic <sandra.maksimo...@mcri.edu.au> > To: "xcat-user@lists.sourceforge.net" <xcat-user@lists.sourceforge.net> > Cc: > Subject: Re: [xcat-user] unexpected hostname > Date: Fri, Nov 2, 2018 6:59 AM > > > Hi Yuan, > > > > I ended up with the following config (there’s probably a bit of redundancy > here): > > > > Object name: mgt0 > > arch=x86_64 > > authdomain=mcri.edu.au > > chain=standby > > conserver=xcat > > currchain=boot > > currstate=boot > > domaintype=activedirectory > > groups=mgt,vm > > ip=10.40.113.99 > > mac=<snip> > > mgt=esx > > netboot=pxe > > nfsdir=/install > > nfsserver=xcat > > nicaliases.eth0=mgt0 > > nicaliases.eth1=mgt0-pub > > nicaliases.eth2=mgt0-data > > 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=Service > > nicnetworks.eth2=Data > > nictypes.eth0=Ethernet > > nictypes.eth1=Ethernet > > nictypes.eth2=Ethernet > > os=centos7.5 > > otherinterfaces=-pub:172.16.13.99,-data:10.50.113.99 > > ou=<snip> > > postbootscripts=otherpkgs > > > postscripts=syslog,remoteshell,syncfiles,setupntp,confignics,MCRI_MgtSetup > > profile=mgt > > provmethod=centos7-mgt > > routenames=14NetRoute,MySQLUCSCRoute > > servicenode=xcat > > status=booted > > statustime=11-01-2018 15:07:59 > > updatestatus=synced > > updatestatustime=11-01-2018 14:06:16 > > > > I’m also now running a postscript to set eth1 to receive its reserved IP > from our public DHCP server as a work around and this seems to do what I’d > like in terms of setting the hostname correctly. > > > > Cheers, > > Sandra > > > > *From:* Yuan Y Bai <by...@cn.ibm.com> > *Sent:* Thursday, 1 November 2018 6:49 PM > *To:* xcat-user@lists.sourceforge.net > *Cc:* xcat-user@lists.sourceforge.net > *Subject:* Re: [xcat-user] unexpected hostname > > > > Hi Sandra, > > > > I define mgt0 node in my MN, delete `mgt0-pub:172.16.13.99... ...` in > `otherinterfaces` from hosts table, and add `nicaliases.eth0=mgt0-mgt` in > node definition, then execute `makehosts mgt0`, it can generate `mgt0-pub` > and `mgt0-data` in /etc/hosts file, the domain `cluster.com` is coming > from my `site` table. I curious that you need to define mgt0-pub and > mgt0-data in otherinterfaces from `hosts` table. > > > > BTW: is there DHCP server for eth1 before the node provision? > > > > My example here: > > > > [root@bybc0607 ~]# lsdef mgt0 > 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 > nicaliases.eth0=mgt0-mgt > nichostnamesuffixes.eth2=-data > nichostnamesuffixes.eth1=-pub > nicips.eth2=10.50.113.99 > nicips.eth1=172.16.13.99 > nicips.eth0=10.40.113.99 > nicnetworks.eth2=Data > nicnetworks.eth1=Public > nicnetworks.eth0=Management > nictypes.eth2=Ethernet > nictypes.eth1=Ethernet > nictypes.eth0=Ethernet > os=centos7.5 > 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 > [root@bybc0607 ~]# makehosts mgt0 > > > > [root@bybc0607 ~]# grep mgt0 /etc/hosts > 10.40.113.99 mgt0 mgt0.cluster.com mgt0-mgt > 10.50.113.99 mgt0-data mgt0-data.cluster.com > 172.16.13.99 mgt0-pub mgt0-pub.cluster.com > > > [root@bybc0607 ~]# lsxcatd -v > Version 2.14.4 (git commit 51bd7fea2746d1812aa0eba3d655d63e16b718e2, built > Wed Oct 17 06:15:55 EDT 2018) > > > > > > Best Regards > -------------------------------------------------- > Yuan Bai (白媛) > > CSTL HPC System Management Development > Tel:86-10-82451401 > E-mail: 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> > To: 'xCAT Users Mailing list' <xcat-user@lists.sourceforge.net> > Cc: > Subject: Re: [xcat-user] unexpected hostname > Date: Thu, Nov 1, 2018 1:29 PM > > > 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> > *Sent:* Monday, 29 October 2018 4:40 PM > *To:* xcat-user@lists.sourceforge.net > *Cc:* 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 > 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> > To: "'xcat-user@lists.sourceforge.net'" <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> 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 > > > > > > ----- Original message ----- > > From: Sandra Maksimovic via xCAT-user <xcat-user@lists.sourceforge.net> > > To: "xcat-user@lists.sourceforge.net" <xcat-user@lists.sourceforge.net> > > Cc: Sandra Maksimovic <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 > 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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