10.5. 创建裸机节点定义文件

流程

1. 以 stack 用户的身份登录 undercloud。

2. Source stackrc 文件：

   $ source ~/stackrc

3. 按照 使用 director 的 Red Hat OpenStack Platform 置备裸机节点指南中所述，创建裸机节点定义文件，如 overcloud -baremetal-deploy.yaml。

4. 在 overcloud-baremetal-deploy.yaml 文件中，向 Ansible playbook 添加声明 cli-overcloud-node-kernelargs.yaml。playbook 包含在置备裸机节点时要使用的内核参数。

   - name: ComputeOvsDpdk
   ...
     ansible_playbooks:
       - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-node-kernelargs.yaml
   ...

5. 如果要在运行 playbook 时设置任何额外的 Ansible 变量，请使用 extra_vars 属性来设置它们。

   如需更多信息，请参阅使用 director 安装和管理 Red Hat OpenStack Platform 指南中的 裸机节点置备属性。

   注意

   您添加到 extra_vars 的变量应当是之前添加到 OVS-DPDK 自定义的环境文件中的 OVS-DPDK Compute 节点的特定于角色的参数。

   示例

   - name: ComputeOvsDpdk
     ...
     ansible_playbooks:
     - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-node-kernelargs.yaml
       extra_vars:
         kernel_args: 'default_hugepagesz=1GB hugepagesz=1GB hugepages=64 iommu=pt intel_iommu=on isolcpus=2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39'
         tuned_isolated_cores: '2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39'
         tuned_profile: 'cpu-partitioning'
         reboot_wait_timeout: 1800
     - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-openvswitch-dpdk.yaml
       extra_vars:
         pmd: '2,22,3,23'
         memory_channels: '4'
         socket_mem: '4096,4096'
         pmd_auto_lb: true
         pmd_load_threshold: "70"
         pmd_improvement_threshold: "25"
         pmd_rebal_interval: "2"

6. 如果您在 NVIDIA Mellanox 卡上使用 NIC 分区，为了避免 VF 连接问题，请设置 Ansible 变量 dpdk_extra: '-a 0000:00:00.0'，这会导致允许 PCI 地址列表不允许地址：

   示例

   - name: ComputeOvsDpdk
     ansible_playbooks:
       - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-node-kernelargs.yaml
         extra_vars:
           reboot_wait_timeout: 600
           kernel_args: default_hugepagesz=1GB hugepagesz=1G hugepages=32 iommu=pt intel_iommu=on isolcpus=1-11,13-23
           tuned_profile: cpu-partitioning
           tuned_isolated_cores: 1-11,13-23
       - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-openvswitch-dpdk.yaml
         extra_vars:
           memory_channels: 4
           lcore: 0,12
           pmd: 1,13,2,14,3,15
           socket_mem: 4096
           dpdk_extra: -a 0000:00:00.0
           disable_emc: false
           enable_tso: false
           revalidator: ' handler: '
           pmd_auto_lb: false
           pmd_load_threshold: ' pmd_improvement_threshold: '
           pmd_rebal_interval: ''
           nova_postcopy: true

7. 可选： 您可以使用 TuneD 配置集 cpu-partitioning-powersave，将 OVS-DPDK 配置为在没有转发数据包时进入睡眠模式。

   要配置 cpu-partitioning-powersave，请在裸机节点定义文件中添加以下行：

   ...
   
   tuned_profile: "cpu-partitioning-powersave"
   
   ...
   
     - playbook: /home/stack/ospd-17.1-geneve-ovn-dpdk-sriov-ctlplane-dataplane-bonding-hybrid/playbooks/cli-overcloud-tuned-maxpower-conf.yaml
     - playbook: /home/stack/ospd-17.1-geneve-ovn-dpdk-sriov-ctlplane-dataplane-bonding-hybrid/playbooks/overcloud-nm-config.yaml
       extra_vars:
         reboot_wait_timeout: 900
   
   ...
   
         pmd_sleep_max: "50"
   
   ...

   示例

   - name: ComputeOvsDpdk
     ...
     ansible_playbooks:
     - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-node-kernelargs.yaml
       extra_vars:
         kernel_args: default_hugepagesz=1GB hugepagesz=1GB hugepages=64 iommu=pt intel_iommu=on isolcpus=2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39
         tuned_isolated_cores: 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39
         tuned_profile: cpu-partitioning
         reboot_wait_timeout: 1800
     - playbook: /home/stack/ospd-17.1-geneve-ovn-dpdk-sriov-ctlplane-dataplane-bonding-hybrid/playbooks/cli-overcloud-tuned-maxpower-conf.yaml
     - playbook: /home/stack/ospd-17.1-geneve-ovn-dpdk-sriov-ctlplane-dataplane-bonding-hybrid/playbooks/overcloud-nm-config.yaml
       extra_vars:
         reboot_wait_timeout: 900
     - playbook: /usr/share/ansible/tripleo-playbooks/cli-overcloud-openvswitch-dpdk.yaml
       extra_vars:
         pmd: 2,22,3,23
         memory_channels: 4
         socket_mem: 4096,4096
         pmd_auto_lb: true
         pmd_load_threshold: "70"
         pmd_improvement_threshold: "25"
         pmd_rebal_interval: "2"
         pmd_sleep_max: "50"

8. 注意您创建的裸机节点定义文件的路径和文件名。稍后，在配置 NIC 时，并在置备节点时使用 此文件作为 overcloud 节点置备 命令的输入文件。