13.3. 部署和测试场景示例
以下示例流程使用简单的单节点部署来测试环境变量和其他支持配置是否已正确设置。实际性能结果可能会因您在云中部署的节点和实例数量而异。
流程
使用以下参数创建
compute-real-time.yaml
文件:parameter_defaults: ComputeRealTimeParameters: IsolCpusList: "1" NovaComputeCpuDedicatedSet: "1" NovaComputeCpuSharedSet: "0" KernelArgs: "default_hugepagesz=1G hugepagesz=1G hugepages=16" NovaComputeDisableIrqBalance: true
使用
ComputeRealTime
角色创建一个新的rt_roles_data.yaml
文件:$ openstack overcloud roles generate \ -o ~/rt_roles_data.yaml Controller ComputeRealTime
使用其他环境文件将
compute-real-time.yaml
和rt_roles_data.yaml
添加到堆栈中,并部署 overcloud:(undercloud)$ openstack overcloud deploy --templates \ -r /home/stack/rt_roles_data.yaml \ -e [your environment files] \ -e /home/stack/templates/compute-real-time.yaml
此命令部署一个 Controller 节点和一个 Real-time Compute 节点。
登录到 Real-time Compute 节点并检查以下参数:
[root@overcloud-computerealtime-0 ~]# uname -a Linux overcloud-computerealtime-0 4.18.0-80.7.1.rt9.153.el8_0.x86_64 #1 SMP PREEMPT RT Wed Dec 13 13:37:53 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux [root@overcloud-computerealtime-0 ~]# cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.18.0-80.7.1.rt9.153.el8_0.x86_64 root=UUID=45ae42d0-58e7-44fe-b5b1-993fe97b760f ro console=tty0 crashkernel=auto console=ttyS0,115200 default_hugepagesz=1G hugepagesz=1G hugepages=16 [root@overcloud-computerealtime-0 ~]# tuned-adm active Current active profile: realtime-virtual-host [root@overcloud-computerealtime-0 ~]# grep ^isolated_cores /etc/tuned/realtime-virtual-host-variables.conf isolated_cores=1 [root@overcloud-computerealtime-0 ~]# cat /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns 4000 # The returned value must not be 0 [root@overcloud-computerealtime-0 ~]# cat /sys/module/kvm/parameters/lapic_timer_advance_ns 4000 # The returned value must not be 0 # To validate hugepages at a host level: [root@overcloud-computerealtime-0 ~]# cat /proc/meminfo | grep -E HugePages_Total|Hugepagesize HugePages_Total: 64 Hugepagesize: 1048576 kB # To validate hugepages on a per NUMA level (below example is a two NUMA compute host): [root@overcloud-computerealtime-0 ~]# cat /sys/devices/system/node/node0/hugepages/hugepages-1048576kB/nr_hugepages 32 [root@overcloud-computerealtime-0 ~]# cat /sys/devices/system/node/node1/hugepages/hugepages-1048576kB/nr_hugepages 32 [root@overcloud-computerealtime-0 ~]# crudini --get /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf compute cpu_dedicated_set 1 [root@overcloud-computerealtime-0 ~]# crudini --get /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf compute cpu_shared_set 0 [root@overcloud-computerealtime-0 ~]# systemctl status irqbalance ● irqbalance.service - irqbalance daemon Loaded: loaded (/usr/lib/systemd/system/irqbalance.service; enabled; vendor preset: enabled) Active: inactive (dead) since Tue 2021-03-30 13:36:31 UTC; 2s ago