build/first-boot.yaml

   1 ---
   2 heat_template_version: 2014-10-16
   3
   4 description: >
   5   This is an example showing how you can do firstboot configuration
   6   of the nodes via cloud-init.  To enable this, replace the default
   7   mapping of OS::TripleO::NodeUserData in ../overcloud_resource_registry*
   8
   9 parameters:
  10   ComputeKernelArgs:
  11     description: >
  12       Space seprated list of Kernel args to be update to grub.
  13       The given args will be appended to existing args of
  14       GRUB_CMDLINE_LINUX in file /etc/default/grub
  15       Example:
  16         "intel_iommu=on default_hugepagesz=2MB hugepagesz=2MB hugepages=2048"
  17     type: string
  18     default: ""
  19   KVMForNFVKernelRPM:
  20     description: >
  21       Name of the kvmfornfv kernel rpm.
  22       Example: "kvmfornfv_kernel.rpm"
  23     type: string
  24     default: ""
  25   ComputeHostnameFormat:
  26     type: string
  27     default: ""
  28
  29 resources:
  30   userdata:
  31     type: OS::Heat::MultipartMime
  32     properties:
  33       parts:
  34         - config: {get_resource: compute_kernel_args}
  35
  36   # Verify the logs on /var/log/cloud-init.log on the overcloud node
  37   compute_kernel_args:
  38     type: OS::Heat::SoftwareConfig
  39     properties:
  40       config:
  41         str_replace:
  42           template: |
  43             #!/bin/bash
  44             set -x
  45             need_reboot='false'
  46
  47             if [ -n "$KERNEL_ARGS" ]; then
  48               sed 's/^\(GRUB_CMDLINE_LINUX=".*\)"/\1 $KERNEL_ARGS"/g' \
  49                                             -i /etc/default/grub ;
  50               grub2-mkconfig -o /etc/grub2.cfg
  51               hugepage_count=$(echo $KERNEL_ARGS | \
  52                                grep -oP ' ?hugepages=\K[0-9]+')
  53               if [ -z "$hugepage_count" ]; then
  54                 hugepage_count=1024
  55               fi
  56               echo vm.hugetlb_shm_group=0 >> /usr/lib/sysctl.d/00-system.conf
  57               HPAGE_CT=$(printf "%.0f" $(echo 2.2*$hugepage_count | bc))
  58               echo vm.max_map_count=$HPAGE_CT >> \
  59                                     /usr/lib/sysctl.d/00-system.conf
  60               HPAGE_CT=$(($hugepage_count * 2 * 1024 * 1024))
  61               echo kernel.shmmax=$HPAGE_CT >> /usr/lib/sysctl.d/00-system.conf
  62               need_reboot='true'
  63             fi
  64
  65             if [ -n "$KVMFORNFV_KERNEL_RPM" ]; then
  66               FORMAT=$COMPUTE_HOSTNAME_FORMAT
  67               if [[ -z $FORMAT ]] ; then
  68                 FORMAT="compute" ;
  69               else
  70                 # Assumption: only %index% and %stackname% are
  71                 # the variables in Host name format
  72                 FORMAT=$(echo $FORMAT | sed  's/\%index\%//g');
  73                 FORMAT=$(echo $FORMAT | sed 's/\%stackname\%//g');
  74               fi
  75               if [[ $(hostname) == *$FORMAT* ]] ; then
  76                 yum install -y /root/$KVMFORNFV_KERNEL_RPM
  77                 grub2-mkconfig -o /etc/grub2.cfg
  78                 sleep 5
  79                 need_reboot='true'
  80               fi
  81             fi
  82
  83             if [ "$need_reboot" == "true" ]; then
  84               reboot
  85             fi
  86           params:
  87             $KERNEL_ARGS: {get_param: ComputeKernelArgs}
  88             $KVMFORNFV_KERNEL_RPM: {get_param: KVMForNFVKernelRPM}
  89             $COMPUTE_HOSTNAME_FORMAT: {get_param: ComputeHostnameFormat}
  90
  91 outputs:
  92   OS::stack_id:
  93     value: {get_resource: userdata}