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[occm] Multi region openstack cluster #2595

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[occm] Multi region openstack cluster #2595

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4 changes: 3 additions & 1 deletion .../openstack-cloud-controller-manager/using-openstack-cloud-controller-manager.md
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,8 @@ The options in `Global` section are used for openstack-cloud-controller-manager
Keystone user password. If you are using [Keystone application credential](https://docs.openstack.org/keystone/latest/user/application_credentials.html), this option is not required.
* `region`
Required. Keystone region name.
* `regions`
Optional. Keystone region name, which is used to specify regions for the cloud provider where the instance is running. Region is default region name. Can be specified multiple times.
* `domain-id`
Keystone user domain ID. If you are using [Keystone application credential](https://docs.openstack.org/keystone/latest/user/application_credentials.html), this option is not required.
* `domain-name`
Expand Down Expand Up @@ -317,7 +319,7 @@ Although the openstack-cloud-controller-manager was initially implemented with N
call](https://docs.openstack.org/api-ref/load-balancer/v2/?expanded=create-a-load-balancer-detail#creating-a-fully-populated-load-balancer).
Setting this option to true will create loadbalancers using serial API calls which first create an unpopulated
loadbalancer, then populate its listeners, pools and members. This is a compatibility option at the expense of
increased load on the OpenStack API. Default: false
increased load on the OpenStack API. Default: false

NOTE:

Expand Down
16 changes: 16 additions & 0 deletions pkg/client/client.go
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Expand Up @@ -53,6 +53,7 @@ type AuthOpts struct {
UserDomainID string `gcfg:"user-domain-id" mapstructure:"user-domain-id" name:"os-userDomainID" value:"optional"`
UserDomainName string `gcfg:"user-domain-name" mapstructure:"user-domain-name" name:"os-userDomainName" value:"optional"`
Region string `name:"os-region"`
Regions []string `name:"os-regions" value:"optional"`
EndpointType gophercloud.Availability `gcfg:"os-endpoint-type" mapstructure:"os-endpoint-type" name:"os-endpointType" value:"optional"`
CAFile string `gcfg:"ca-file" mapstructure:"ca-file" name:"os-certAuthorityPath" value:"optional"`
TLSInsecure string `gcfg:"tls-insecure" mapstructure:"tls-insecure" name:"os-TLSInsecure" value:"optional" matches:"^true|false$"`
Expand Down Expand Up @@ -87,6 +88,7 @@ func LogCfg(authOpts AuthOpts) {
klog.V(5).Infof("UserDomainID: %s", authOpts.UserDomainID)
klog.V(5).Infof("UserDomainName: %s", authOpts.UserDomainName)
klog.V(5).Infof("Region: %s", authOpts.Region)
klog.V(5).Infof("Regions: %s", authOpts.Regions)
klog.V(5).Infof("EndpointType: %s", authOpts.EndpointType)
klog.V(5).Infof("CAFile: %s", authOpts.CAFile)
klog.V(5).Infof("CertFile: %s", authOpts.CertFile)
Expand Down Expand Up @@ -232,6 +234,20 @@ func ReadClouds(authOpts *AuthOpts) error {
authOpts.ApplicationCredentialName = replaceEmpty(authOpts.ApplicationCredentialName, cloud.AuthInfo.ApplicationCredentialName)
authOpts.ApplicationCredentialSecret = replaceEmpty(authOpts.ApplicationCredentialSecret, cloud.AuthInfo.ApplicationCredentialSecret)

regions := strings.Split(authOpts.Region, ",")
if len(regions) > 1 {
authOpts.Region = regions[0]
}

for _, r := range cloud.Regions {
// Support only single auth section in clouds.yaml
if r.Values.AuthInfo == nil && r.Name != authOpts.Region {
regions = append(regions, r.Name)
}
}

authOpts.Regions = regions

return nil
}

Expand Down
6 changes: 5 additions & 1 deletion pkg/csi/cinder/openstack/openstack.go
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ func GetConfigFromFiles(configFilePaths []string) (Config, error) {
}
}

for _, global := range cfg.Global {
for idx, global := range cfg.Global {
// Update the config with data from clouds.yaml if UseClouds is enabled
if global.UseClouds {
if global.CloudsFile != "" {
Expand All @@ -138,6 +138,10 @@ func GetConfigFromFiles(configFilePaths []string) (Config, error) {
}
klog.V(5).Infof("Credentials are loaded from %s:", global.CloudsFile)
}

if len(global.Regions) == 0 {
cfg.Global[idx].Regions = []string{global.Region}
}
}

return cfg, nil
Expand Down
6 changes: 6 additions & 0 deletions pkg/csi/cinder/openstack/openstack_test.go
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Expand Up @@ -112,6 +112,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile,
TenantID: fakeTenantID,
Region: fakeRegion,
Regions: []string{fakeRegion},
}
expectedOpts.Global["cloud2"] = &client.AuthOpts{
Username: fakeUserName_cloud2,
Expand All @@ -121,6 +122,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile_cloud2,
TenantID: fakeTenantID_cloud2,
Region: fakeRegion_cloud2,
Regions: []string{fakeRegion_cloud2},
}
expectedOpts.Global["cloud3"] = &client.AuthOpts{
Username: fakeUserName_cloud3,
Expand All @@ -130,6 +132,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile_cloud3,
TenantID: fakeTenantID_cloud3,
Region: fakeRegion_cloud3,
Regions: []string{fakeRegion_cloud3},
}

expectedOpts.BlockStorage.RescanOnResize = true
Expand Down Expand Up @@ -224,6 +227,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile,
TenantID: fakeTenantID,
Region: fakeRegion,
Regions: []string{fakeRegion},
EndpointType: gophercloud.AvailabilityPublic,
UseClouds: true,
CloudsFile: wd + "/fixtures/clouds.yaml",
Expand All @@ -237,6 +241,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile_cloud2,
TenantID: fakeTenantID_cloud2,
Region: fakeRegion_cloud2,
Regions: []string{fakeRegion_cloud2},
EndpointType: gophercloud.AvailabilityPublic,
UseClouds: true,
CloudsFile: wd + "/fixtures/clouds.yaml",
Expand All @@ -250,6 +255,7 @@ rescan-on-resize=true`
CAFile: fakeCAfile_cloud3,
TenantID: fakeTenantID_cloud3,
Region: fakeRegion_cloud3,
Regions: []string{fakeRegion_cloud3},
EndpointType: gophercloud.AvailabilityPublic,
UseClouds: true,
CloudsFile: wd + "/fixtures/clouds.yaml",
Expand Down
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