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Merge pull request #4174 from robin2008/stateless-sn-doc
Stateless service node RTD update
This commit is contained in:
zet809
GitHub
commit
c3c394d9eb
@ -33,22 +33,22 @@ Configure ``otherpkgdir`` and ``otherpkglist`` for service node osimage
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* Verify the following entries are included in the package file specified by the ``otherpkglist`` attribute of the service node osimage. ::
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xcat/xcat-dep/<os>/<arch>/xCATsn
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xcat/xcat-core/xCATsn
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xcat/xcat-dep/<os>/<arch>/conserver-xcat
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xcat/xcat-dep/<os>/<arch>/perl-Net-Telnet
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xcat/xcat-dep/<os>/<arch>/perl-Expect
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For example, for the osimage *rhels7-x86_64-install-service* ::
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[root@fs4 ~]# lsdef -t osimage rhels7-x86_64-install-service -i otherpkglist
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Object name: rhels7-x86_64-install-service
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lsdef -t osimage rhels7-x86_64-install-service -i otherpkglist
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Object name: rhels7-x86_64-install-service
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otherpkglist=/opt/xcat/share/xcat/install/rh/service.rhels7.x86_64.otherpkgs.pkglist
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[root@fs4 ~]# cat /opt/xcat/share/xcat/install/rh/service.rhels7.x86_64.otherpkgs.pkglist
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cat /opt/xcat/share/xcat/install/rh/service.rhels7.x86_64.otherpkgs.pkglist
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xcat/xcat-core/xCATsn
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xcat/xcat-dep/rh7/x86_64/conserver-xcat
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xcat/xcat-dep/rh7/x86_64/perl-Net-Telnet
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xcat/xcat-dep/rh7/x86_64/perl-Expect
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[root@fs4 ~]#
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**Note:** you will be installing the xCAT Service Node rpm xCATsn meta-package on the Service Node, not the xCAT Management Node meta-package. Do not install both.
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@ -18,98 +18,158 @@ Build the Service Node Diskless Image
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This section assumes you can build the stateless image on the management node because the Service Nodes are the same OS and architecture as the management node. If this is not the case, you need to build the image on a machine that matches the Service Node's OS architecture.
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* Create an osimage definition. When you run ``copycds``, xCAT will create a Service Node osimage definitions for that distribution. For a stateless
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Service Node, use the ``*-netboot-service`` definition. ::
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* Create an osimage definition.
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# lsdef -t osimage | grep -i service
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rhels6.4-ppc64-install-service (osimage)
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rhels6.4-ppc64-netboot-service (osimage) <================
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rhels6.4-ppc64-statelite-service (osimage)
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When you run ``copycds``, xCAT will only create a Service Node stateful osimage definitions for that distribution. For a stateless Service Node osimage, you may create it from a stateless Compute Node osimage definition. ::
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# lsdef -t osimage -l rhels6.3-ppc64-netboot-service
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Object name: rhels6.3-ppc64-netboot-service
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exlist=/opt/xcat/share/xcat/netboot/rh/service.exlist
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lsdef -t osimage | grep -i netboot
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rhels7.3-ppc64le-netboot-compute (osimage)
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mkdef -t osimage -o rhels7.3-ppc64le-netboot-service \
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--template rhels7.3-ppc64le-netboot-compute \
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profile=service provmethod=netboot postscripts=servicenode
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lsdef -t osimage rhels7.3-ppc64le-netboot-service
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Object name: rhels7.3-ppc64le-netboot-service
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exlist=/opt/xcat/share/xcat/netboot/rh/compute.rhels7.ppc64le.exlist
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imagetype=linux
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osarch=ppc64
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osdistroname=rhels6.3-ppc64
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osarch=ppc64le
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osdistroname=rhels7.3-ppc64le
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osname=Linux
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osvers=rhels6.3
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otherpkgdir=/install/post/otherpkgs/rhels6.3/ppc64
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otherpkglist=/opt/xcat/share/xcat/netboot/rh/service.rhels6.ppc64.otherpkgs.pkglist
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pkgdir=/install/rhels6.3/ppc64
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pkglist=/opt/xcat/share/xcat/netboot/rh/service.rhels6.ppc64.pkglist
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postinstall=/opt/xcat/share/xcat/netboot/rh/service.rhels6.ppc64.postinstall
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osvers=rhels7.3
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le
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pkgdir=/install/rhels7.3/ppc64le
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pkglist=/opt/xcat/share/xcat/netboot/rh/compute.rhels7.ppc64le.pkglist
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postinstall=/opt/xcat/share/xcat/netboot/rh/compute.rhels7.ppc64le.postinstall
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postscripts=servicenode
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profile=service
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provmethod=netboot
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rootimgdir=/install/netboot/rhels6.3/ppc64/service
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rootimgdir=/install/netboot/rhels7.3/ppc64le/compute
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* You can check the Service Node packaging to see if it has all the rpms you require. We ship a basic requirements lists that will create a fully functional Service Node. However, you may want to customize your service node by adding additional operating system packages or modifying the files excluded by the exclude list. View the files referenced by the osimage pkglist, otherpkglist and exlist attributes: ::
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* Configure mandatory attributes for Service Node osimage definition.
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The following attributes must be modified to suitable value: ::
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exlist
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otherpkglist
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pkglist
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postinstall
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rootimgdir
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1, Create the exlist, pkglist and otherpkglist file.
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xCAT ships a basic requirements lists that will create a fully functional Service Node. However, you may want to customize your service node by adding additional operating system packages or modifying the files excluded by the exclude list. Check the below files to see if it meets your needs. ::
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cd /opt/xcat/share/xcat/netboot/rh/
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view service.rhels6.ppc64.pkglist
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view service.rhels6.ppc64.otherpkgs.pkglist
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view service.exlist
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view service.rhels7.ppc64le.pkglist
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view service.rhels7.ppc64le.otherpkgs.pkglist
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view service.rhels7.ppc64le.exlist
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If you would like to change any of these files, copy them to a custom
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directory. This can be any directory you choose, but we recommend that you
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keep it /install somewhere. A good location is something like
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``/install/custom/netboot/<os>/service``. Make sure that your
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``otherpkgs.pkglist`` file as an entry for
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keep it /install somewhere. A good location is something like ``/install/custom/netboot/<osimage>``.
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::
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export OSIMAGE_DIR=/install/custom/netboot/rhels7.3-ppc64le-netboot-service
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mkdir -p $OSIMAGE_DIR
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cp /opt/xcat/share/xcat/netboot/rh/service.rhels7.ppc64le.pkglist $OSIMAGE_DIR
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cp /opt/xcat/share/xcat/netboot/rh/service.rhels7.ppc64le.otherpkgs.pkglist $OSIMAGE_DIR
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cp /opt/xcat/share/xcat/netboot/rh/service.rhels7.ppc64le.exlist $OSIMAGE_DIR
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And make sure that your ``otherpkgs.pkglist`` file has the following entries:
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::
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xcat/xcat-core/xCATsn
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xcat/xcat-dep/<os>/<arch>/conserver-xcat
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xcat/xcat-dep/<os>/<arch>/perl-Net-Telnet
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xcat/xcat-dep/<os>/<arch>/perl-Expect
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This is required to install the xCAT Service Node function into your image.
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For example, for the osimage *rhels7.3-ppc64le-netboot-service*: ::
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You may also choose to create an appropriate /etc/fstab file in your
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Service Node image. Copy the script referenced by the postinstall
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attribute to your directory and modify it as you would like:
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xcat/xcat-core/xCATsn
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xcat/xcat-dep/rh7/ppc64le/conserver-xcat
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xcat/xcat-dep/rh7/ppc64le/perl-Net-Telnet
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xcat/xcat-dep/rh7/ppc64le/perl-Expect
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**Note:** you will be installing the xCAT Service Node rpm xCATsn meta-package on the Service Node, not the xCAT Management Node meta-package. Do not install both.
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2, Create the postinstall script.
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xCAT ships a default postinstall script for stateless Service Node. You may also choose to create an appropriate /etc/fstab file in your
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Service Node image. :
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::
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cp /opt/xcat/share/xcat/netboot/rh/service.rhels6.ppc64.postinstall
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/install/custom/netboot/rh
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vi /install/custom/netboot/rh
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# uncomment the sample fstab lines and change as needed:
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proc /proc proc rw 0 0
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sysfs /sys sysfs rw 0 0
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devpts /dev/pts devpts rw,gid=5,mode=620 0 0
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service_x86_64 / tmpfs rw 0 1
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none /tmp tmpfs defaults,size=10m 0 2
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none /var/tmp tmpfs defaults,size=10m 0 2
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export OSIMAGE_DIR=/install/custom/netboot/rhels7.3-ppc64le-netboot-service
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cp /opt/xcat/share/xcat/netboot/rh/service.rhels7.ppc64le.postinstall $OSIMAGE_DIR
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After modifying the files, you will need to update the osimage definition to
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reference these files. We recommend creating a new osimage definition for
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your custom image: ::
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vi $OSIMAGE_DIR/service.rhels7.ppc64le.postinstall
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# uncomment the sample fstab lines and change as needed:
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proc /proc proc rw 0 0
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sysfs /sys sysfs rw 0 0
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devpts /dev/pts devpts rw,gid=5,mode=620 0 0
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service_ppc64le / tmpfs rw 0 1
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none /tmp tmpfs defaults,size=10m 0 2
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none /var/tmp tmpfs defaults,size=10m 0 2
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lsdef -t osimage -l rhels6.3-ppc64-netboot-service -z > /tmp/myservice.def
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vi /tmp/myservice.def
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# change the name of the osimage definition
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# change any attributes that now need to reference your custom files
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# change the rootimgdir attribute replacing 'service'
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with a name to match your new osimage definition
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cat /tmp/msyservice.def | mkdef -z
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3, Modify the Service Node osimage definition with given attributes.
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While you are here, if you'd like, you can do the same for your compute node
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::
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export OSIMAGE_DIR=/install/custom/netboot/rhels7.3-ppc64le-netboot-service
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chdef -t osimage -o rhels7.3-ppc64le-netboot-service \
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exlist=$OSIMAGE_DIR/service.rhels7.ppc64le.exlist \
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otherpkglist=$OSIMAGE_DIR/service.rhels7.ppc64le.otherpkgs.pkglist \
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pkglist=$OSIMAGE_DIR/service.rhels7.ppc64le.pkglist \
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postinstall=$OSIMAGE_DIR/service.rhels7.ppc64le.postinstall \
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rootimgdir=$OSIMAGE_DIR/service
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lsdef -t osimage -l rhels7.3-ppc64le-netboot-service
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Object name: rhels7.3-ppc64le-netboot-service
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exlist=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service.rhels7.ppc64le.exlist
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imagetype=linux
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osarch=ppc64le
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osdistroname=rhels7.3-ppc64le
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osname=Linux
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osvers=rhels7.3
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le
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otherpkglist=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service.rhels7.ppc64le.otherpkgs.pkglist
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pkgdir=/install/rhels7.3/ppc64le
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pkglist=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service.rhels7.ppc64le.pkglist
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postinstall=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service.rhels7.ppc64le.postinstall
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postscripts=servicenode
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profile=service
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provmethod=netboot
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rootimgdir=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service
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While you are here, if you'd like, you can do the same for your Service Node
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images, creating custom files and new custom osimage definitions as you need
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to.
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* Make your xCAT software available for otherpkgs processing
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* If you downloaded xCAT to your management node for installation, place a
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copy of your xcat-core and xcat-dep in your otherpkgdir directory ::
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Option 1:
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lsdef -t osimage -o rhels6.3-ppc64-netboot-service -i otherpkgdir
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Object name: rhels6.3-ppc64-netboot-service
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otherpkgdir=/install/post/otherpkgs/rhels6.3/ppc64
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cd /install/post/otherpkgs/rhels6.3/ppc64
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If you downloaded xCAT to your management node for installation, place a
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copy of your ``xcat-core`` and ``xcat-dep`` in your ``otherpkgdir`` directory ::
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lsdef -t osimage -o rhels7.3-ppc64le-netboot-service -i otherpkgdir
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Object name: rhels7.3-ppc64le-netboot-service
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le
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cd /install/post/otherpkgs/rhels7.3/ppc64le
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mkdir xcat
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cd xcat
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cp -Rp <current location of xcat-core>/xcat-core
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cp -Rp <current location of xcat-dep>/xcat-dep
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* If you installed your management node directly from the online
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Option 2:
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If you installed your management node directly from the online
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repository, you will need to download the ``xcat-core`` and ``xcat-dep`` tarballs
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- From http://xcat.org/download.html, download the ``xcat-core`` and ``xcat-dep`` tarball files.
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@ -117,11 +177,11 @@ This section assumes you can build the stateless image on the management node be
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::
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lsdef -t osimage -o rhels6.3-ppc64-netboot-service -i otherpkgdir
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Object name: rhels6.3-ppc64-netboot-service
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otherpkgdir=/install/post/otherpkgs/rhels6.3/ppc64
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cd /install/post/otherpkgs/rhels6.3/ppc64
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lsdef -t osimage -o rhels7.3-ppc64le-netboot-service -i otherpkgdir
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Object name: rhels7.3-ppc64le-netboot-service
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otherpkgdir=/install/post/otherpkgs/rhels7.3/ppc64le
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cd /install/post/otherpkgs/rhels7.3/ppc64le
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mkdir xcat
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cd xcat
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@ -135,40 +195,106 @@ This section assumes you can build the stateless image on the management node be
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::
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genimage rhels6.3-ppc64-netboot-service
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genimage rhels7.3-ppc64le-netboot-service
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* Prevent DHCP from starting up until xcatd has had a chance to configure it:
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::
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chroot /install/netboot/rhels6.3/ppc64/service/rootimg chkconfig dhcpd off
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chroot /install/netboot/rhels6.3/ppc64/service/rootimg chkconfig dhcrelay off
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export OSIMAGE_ROOT=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service
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chroot $OSIMAGE_ROOT/rootimg chkconfig dhcpd off
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chroot $OSIMAGE_ROOT/rootimg chkconfig dhcrelay off
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* IF using NFS hybrid mode, export /install read-only in Service Node image:
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::
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cd /install/netboot/rhels6.3/ppc64/service/rootimg/etc
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export OSIMAGE_ROOT=/install/custom/netboot/rhels7.3-ppc64le-netboot-service/service
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cd $OSIMAGE_ROOT/rootimg/etc
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echo '/install *(ro,no_root_squash,sync,fsid=13)' >exports
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* Pack the image for your osimage definition:
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::
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packimage rhels6.3-ppc64-netboot-service
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packimage rhels7.3-ppc64le-netboot-service
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* Set the node status to ready for netboot using your osimage definition and
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your 'service' nodegroup:
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Install Service Nodes
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------------------------
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::
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nodeset service osimage=rhels6.3-ppc64-netboot-service
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rinstall service osimage=rhels7.3-ppc64le-netboot-service
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* To diskless boot the Service Nodes
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Watch the installation progress using either wcons or rcons:
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::
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rnetboot service
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wcons service # make sure DISPLAY is set to your X server/VNC or
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rcons <node_name>
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tail -f /var/log/messages
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Enable localdisk for stateless Service Node (Optional)
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------------------------------------------------------
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If you want, your can leverage local disk to contain some directories during the
|
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stateless nodes running. And you can customize the osimage definition to achieve it.
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For Service Node, it is recommended to put below directories
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on local disk. ::
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|
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#/install (Not required when using shared /install directory)
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#/tftpboot (Not required when using shared /tftpboot directory)
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/var/log
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/tmp
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The following section explains how to accomplish this.
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* Change the Service Node osimage definition to enable ``localdisk``
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::
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#create a partition file to partition and mount the disk
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export OSIMAGE=rhels7.3-ppc64le-netboot-service
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cat<<EOF > /install/custom/netboot/$OSIMAGE/partitionfile
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enable=yes
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enablepart=yes
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[disk]
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dev=/dev/sda
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clear=yes
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parts=10,50
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[localspace]
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dev=/dev/sda2
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fstype=ext4
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[swapspace]
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dev=/dev/sda1
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EOF
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#add the partition file to Service Node osimage definition and configure ``policy`` table
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chdef -t osimage -o $OSIMAGE partitionfile=/install/custom/netboot/$OSIMAGE/partitionfile
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chtab priority=7.1 policy.commands=getpartition policy.rule=allow
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#define files or directories which are required to be put on local disk
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#chtab litefile.image=$OSIMAGE litefile.file=/install/ litefile.options=localdisk
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#chtab litefile.image=$OSIMAGE litefile.file=/tftpboot/ litefile.options=localdisk
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chtab litefile.image=$OSIMAGE litefile.file=/var/log/ litefile.options=localdisk
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chtab litefile.image=$OSIMAGE litefile.file=/tmp/ litefile.options=localdisk
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* Run image generation and repacking for your osimage definition:
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||||
::
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||||
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genimage rhels7.3-ppc64le-netboot-service
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packimage rhels7.3-ppc64le-netboot-service
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Note: ``enablepart=yes`` in partition file will make partition on the locak disk at every boot time. If you want to keep the contents
|
||||
on local disk at next boot, remmber changing to ``enablepart=no`` after the first time provisioning.
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|
||||
For more information on ``localdisk`` option, refer to :ref:`setup_localdisk_label`
|
||||
|
||||
Update Service Node Stateless Image
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
@ -182,10 +308,9 @@ To update the xCAT software in the image at a later time:
|
||||
|
||||
::
|
||||
|
||||
genimage rhels6.3-ppc64-netboot-service
|
||||
packimage rhels6.3-ppc64-netboot-service
|
||||
nodeset service osimage=rhels6.3-ppc64-netboot-service
|
||||
rnetboot service
|
||||
genimage "<osimagename>"
|
||||
packimage "<osimagename>"
|
||||
rinstall service osimage="<osimagename>"
|
||||
|
||||
Note: The Service Nodes are set up as NFS-root servers for the compute nodes.
|
||||
Any time changes are made to any compute image on the mgmt node it will be
|
||||
@ -193,12 +318,3 @@ necessary to sync all changes to all Service Nodes. In our case the
|
||||
``/install`` directory is mounted on the servicenodes, so the update to the
|
||||
compute node image is automatically available.
|
||||
|
||||
Monitor install and boot
|
||||
------------------------
|
||||
|
||||
::
|
||||
|
||||
wcons service # make sure DISPLAY is set to your X server/VNC or
|
||||
rcons <one-node-at-a-time> # or do rcons for each node
|
||||
tail -f /var/log/messages
|
||||
|
||||
|
||||
@ -1,3 +1,5 @@
|
||||
.. _setup_localdisk_label:
|
||||
|
||||
Enabling the localdisk Option
|
||||
-----------------------------
|
||||
|
||||
@ -80,6 +82,6 @@ For the files/directories that you would like xCAT to store on the local disk, a
|
||||
|
||||
``Note``: you do not need to specify the swap space in the litefile table. Just putting it in the partitionfile config file is enough.
|
||||
|
||||
Add an entry in policy table to permit the running of the ``getpartitioin`` command from the node ::
|
||||
Add an entry in policy table to permit the running of the ``getpartition`` command from the node ::
|
||||
|
||||
chtab priority=7.1 policy.commands=getpartition policy.rule=allow
|
||||
|
||||
@ -1 +1,4 @@
|
||||
.. include:: ../../../common/deployment/enable_localdisk.rst
|
||||
|
||||
``Note``:
|
||||
* To keep the contents on local disk after you using ``enablepart=yes`` to do the disk partitioning, make sure to set ``enablepart=no`` in partition configuration file after the node is booted.
|
||||
|
||||
@ -1,6 +0,0 @@
|
||||
.. include:: ../../../common/deployment/enable_localdisk.rst
|
||||
|
||||
``Note``:
|
||||
* `localdisk` feature won't syncronize the files/directories defined in `litefile` table from diskless image to local disk at the node boot time. It might casue issue to the application which depends on some of those directories. For example, the ``httpd`` service cannot be started if ``/var/log/`` is defined in `litefile` table. To work around this, you may copy the required contents to local disk and restart service manually at the first time.
|
||||
|
||||
* To keep the contents on local disk after you use ``enablepart=yes`` to do partitioin, make sure to set ``enablepart=no`` in partitioin configuration file after the node is booted.
|
||||
@ -3,7 +3,7 @@
|
||||
|
||||
=head1
|
||||
xCAT plugin package to handle getpartition command
|
||||
Generally, the getpartitioin command is called from the stateless
|
||||
Generally, the getpartition command is called from the stateless
|
||||
node during the booting period to get the partition configureation
|
||||
infomation to part the hard disk on the stateless node and to
|
||||
manage the local disk space for statelite and swap space.
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user