Hi Georgios, Thanks for the tip. I've never heard of mkresolvconf in more than 5 years using xCAT. But yes, it does generate the /etc/resolv.conf correctly when issuing the updatenode command, but not while the machine is booting.
Something may be overwriting the /etc/resolv.conf file. But there's stil a tricky behaviour. The compunte node is selecting it's name from the Infiniband interface, which is incorrect. It should use it's name from the management interface. That was happening before the mkresolvconf trick anyway, and again, I don't have any ideia why this is happening. Thanks, Vinícius. On 14 Jun 2021, at 07:10, Nikolis, Georgios <georgios.niko...@charite.de<mailto:georgios.niko...@charite.de>> wrote: I think you need to add the mkresolvconf postscript into the node's postbootscripts. Does "updatenode <node> -P mkresolvconf" repair nameserver configuration on an affected node? Cheers, Georgios -- Georgios Nikolis Charité – Universitätsmedizin Berlin Geschäftsbereich IT | Scientific Computing Campus Charité Mitte Rahel-Hirsch-Weg 5 | Ebene 02 | Raum 073 Charitéplatz 1 | 10117 Berlin georgios.niko...@charite.de<mailto:georgios.niko...@charite.de> https://www.charite.de<https://www.charite.de/> On Mon, 2021-06-14 at 05:41 +0000, Vinícius Ferrão via xCAT-user wrote: Hello, For unknown reasons nodes that I've installed with rinstall (using stateful method) didn't get the nameserver section in resolv.conf, basically leaving the node without any name resolution. As specified on the documentation https://xcat-docs.readthedocs.io/en/stable/advanced/domain_name_resolution/domain_name_resolution.html; it should be generated it nameservers and domain are provided on the site table: The resolv.conf files for the compute nodes will be created automatically using the domain and nameservers values set in the xCAT network or site definition. Both are defined but it still didn't generate it correctly. [root@headnode ~]# lsdef -t site clustersite | egrep "nameserver|forward|domain" domain=cluster.domain.tld forwarders=1.1.1.1 nameservers=172.26.255.254 I even tried adding the nameservers to the network definition, but it was a no go: [root@headnode ~]# lsdef -t network management Object name: management gateway=<xcatmaster> mask=255.255.0.0 mgtifname=bond0 mtu=1500 nameservers=172.26.255.254 net=172.26.0.0 tftpserver=<xcatmaster> Is there anything that I can do to debug this? Thanks, Vinícius. PS: Here's full data from a given node and the networks. [root@headnode ~]# lsdef ceph01 Object name: ceph01 arch=x86_64 bmc=172.25.254.1 bmcpassword=calvin bmcusername=root cons=ipmi consoleenabled=1 currchain=boot currstate=install ol8.4.0-x86_64-compute groups=ceph,all ip=172.26.254.1 mac=bc:97:e1:ea:08:b0 mgt=ipmi netboot=xnba nicdevices.bond0.123=bond0 nicdevices.bond0.1010=bond0 nicdevices.bond0=ens1f0np0|ens1f1np1 nichostnamesuffixes.bond0.1010=-ceph nichostnamesuffixes.bond0.123=-cephsync nicips.ib0=172.27.254.1 nicips.bond0=172.26.254.1 nicips.bond0.1010=10.0.10.21 nicips.bond0.123=192.168.168.21 nicnetworks.bond0.123=ceph-sync nicnetworks.ib0=application nicnetworks.bond0.1010=ceph nicnetworks.bond0=management nictypes.ib0=Infiniband nictypes.ens1f0np0=ethernet nictypes.bond0.1010=vlan nictypes.bond0=bond nictypes.ens1f1np1=ethernet nictypes.bond0.123=vlan os=ol8.4.0 postbootscripts=otherpkgs,confignics postscripts=syslog,remoteshell,syncfiles,confignetwork,versatushpc/postinstall-ceph profile=compute provmethod=ol8.4.0-x86_64-install-ceph serialport=0 serialspeed=115200 status=booted statustime=06-14-2021 02:37:04 updatestatus=synced updatestatustime=06-14-2021 02:01:55 [root@headnode ~]# lsdef -t network application (network) ceph (network) ceph-sync (network) libvirt (network) management (network) service (network) site (network) _______________________________________________ xCAT-user mailing list <mailto:xCAT-user@lists.sourceforge.net> xCAT-user@lists.sourceforge.net <https://lists.sourceforge.net/lists/listinfo/xcat-user> https://lists.sourceforge.net/lists/listinfo/xcat-user _______________________________________________ xCAT-user mailing list xCAT-user@lists.sourceforge.net<mailto:xCAT-user@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/xcat-user
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