红帽全球峰会8.7. 修改 Overcloud 环境
有些时候，您可能会需要修改 Overcloud 来添加一些功能，或改变它的运行方式。要修改 Overcloud，在您的定制环境文件和 Heat 模板中进行修改，然后从您的初始 Overcloud 创建中重新运行
openstack overcloud deploy 命令。例如，如果根据 第 7 章 创建 Overcloud 创建了一个 Overcloud，您应该重新运行以下命令：
openstack overcloud deploy --templates -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml -e ~/templates/network-environment.yaml -e ~/templates/storage-environment.yaml --control-scale 3 --compute-scale 3 --ceph-storage-scale 3 --control-flavor control --compute-flavor compute --ceph-storage-flavor ceph-storage --ntp-server pool.ntp.org --neutron-network-type vxlan --neutron-tunnel-types vxlan
$ openstack overcloud deploy --templates -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml -e ~/templates/network-environment.yaml -e ~/templates/storage-environment.yaml --control-scale 3 --compute-scale 3 --ceph-storage-scale 3 --control-flavor control --compute-flavor compute --ceph-storage-flavor ceph-storage --ntp-server pool.ntp.org --neutron-network-type vxlan --neutron-tunnel-types vxlan
director 会在 heat 中检查
overcloud 栈，然后根据环境文件和 heat 模板更新栈中的每个项。它不会重新创建 Overcloud，而是更改已存在的 Overcloud。
如果需要包括一个新的环境文件，在
openstack overcloud deploy 命令中使用 -e 选项添加它。例如：
openstack overcloud deploy --templates -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml -e ~/templates/network-environment.yaml -e ~/templates/storage-environment.yaml -e ~/templates/new-environment.yaml --control-scale 3 --compute-scale 3 --ceph-storage-scale 3 --control-flavor control --compute-flavor compute --ceph-storage-flavor ceph-storage --ntp-server pool.ntp.org --neutron-network-type vxlan --neutron-tunnel-types vxlan
$ openstack overcloud deploy --templates -e /usr/share/openstack-tripleo-heat-templates/environments/network-isolation.yaml -e ~/templates/network-environment.yaml -e ~/templates/storage-environment.yaml -e ~/templates/new-environment.yaml --control-scale 3 --compute-scale 3 --ceph-storage-scale 3 --control-flavor control --compute-flavor compute --ceph-storage-flavor ceph-storage --ntp-server pool.ntp.org --neutron-network-type vxlan --neutron-tunnel-types vxlan
这包括从环境文件中读入到栈中的新参数和资源。
重要
一般情况下，不要手工修改 Overcloud 的配置，因为 director 可能会在以后覆盖这些所做的修改。
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