[Storage][IsolatedRegions] Adapt FSxLustre DNS domain for US isolated…

… regions.

Signed-off-by: Giacomo Marciani <mgiacomo@amazon.com>

cookbooks/aws-parallelcluster-environment/libraries/fsx.rb

@@ -0,0 +1,4 @@
+def aws_domain_for_fsx(region)
+  # DNS names have the default AWS domain (amazonaws.com) also in China and GovCloud.
+  region.start_with?("us-iso") ? aws_domain : CLASSIC_AWS_DOMAIN
+end

cookbooks/aws-parallelcluster-environment/resources/lustre/partial/_mount_unmount.rb

@@ -109,8 +109,8 @@ def initialize(node, resource, index)
       @volume_junction_path = self.class.make_absolute(resource.fsx_volume_junction_path_array[index])
 
       if @dns_name.blank?
-        # Region Building Note: DNS names have the default AWS domain (amazonaws.com) also in China and GovCloud.
-        @dns_name = "#{@id}.fsx.#{node['cluster']['region']}.amazonaws.com"
+        region = node['cluster']['region']
+        @dns_name = "#{@id}.fsx.#{region}.#{aws_domain_for_fsx(region)}"
       end
 
       @mount_name = resource.fsx_mount_name_array[index]

cookbooks/aws-parallelcluster-environment/spec/unit/resources/lustre_mount_spec.rb

@@ -29,6 +29,7 @@
           before do
             stub_command("mount | grep ' /lustre_shared_dir_with_no_mount '").and_return(false)
             stub_command("mount | grep ' /lustre_shared_dir_with_mount '").and_return(true)
+            allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
           end
 
           it 'creates_shared_dir' do
@@ -58,7 +59,7 @@
 
           it 'enables shared dir mount if already mounted' do
             is_expected.to enable_mount('/lustre_shared_dir_with_mount')
-              .with(device: 'lustre_id_2.fsx.REGION.amazonaws.com@tcp:/lustre_mount_name_2')
+              .with(device: 'lustre_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX@tcp:/lustre_mount_name_2')
               .with(fstype: 'lustre')
               .with(dump: 0)
               .with(pass: 0)
@@ -113,6 +114,7 @@
           before do
             stub_command("mount | grep ' /filecache_shared_dir_1 '").and_return(false)
             stub_command("mount | grep ' /filecache_shared_dir_2 '").and_return(true)
+            allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
           end
 
           it 'creates_shared_dir' do
@@ -196,6 +198,7 @@
           before do
             stub_command("mount | grep ' /openzfs_shared_dir_1 '").and_return(false)
             stub_command("mount | grep ' /openzfs_shared_dir_2 '").and_return(true)
+            allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
           end
 
           it 'creates_shared_dir' do
@@ -225,7 +228,7 @@
 
           it 'enables shared dir mount if already mounted' do
             is_expected.to enable_mount('/openzfs_shared_dir_2')
-              .with(device: 'openzfs_id_2.fsx.REGION.amazonaws.com:/junction_path_2')
+              .with(device: 'openzfs_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX:/junction_path_2')
               .with(fstype: 'nfs')
               .with(dump: 0)
               .with(pass: 0)
@@ -272,6 +275,7 @@
           before do
             stub_command("mount | grep ' /ontap_shared_dir_1 '").and_return(false)
             stub_command("mount | grep ' /ontap_shared_dir_2 '").and_return(true)
+            allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
           end
 
           it 'creates_shared_dir' do
@@ -301,7 +305,7 @@
 
           it 'enables shared dir mount if already mounted' do
             is_expected.to enable_mount('/ontap_shared_dir_2')
-              .with(device: 'ontap_id_2.fsx.REGION.amazonaws.com:/junction_path_2')
+              .with(device: 'ontap_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX:/junction_path_2')
               .with(fstype: 'nfs')
               .with(dump: 0)
               .with(pass: 0)
@@ -366,6 +370,7 @@
           allow(Dir).to receive(:empty?).with("/shared_dir_1").and_return(true)
           allow(Dir).to receive(:exist?).with("/shared_dir_2").and_return(true)
           allow(Dir).to receive(:empty?).with("/shared_dir_2").and_return(false)
+          allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
         end
 
         it 'unmounts fsx only if mounted' do
@@ -383,9 +388,9 @@
             .with(path: "/etc/fstab")
             .with(pattern: "dns_name@tcp:/mount_name_1 *")
 
-          is_expected.to edit_delete_lines('remove volume lustre_id_2.fsx.REGION.amazonaws.com@tcp:/mount_name_2 from /etc/fstab')
+          is_expected.to edit_delete_lines('remove volume lustre_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX@tcp:/mount_name_2 from /etc/fstab')
             .with(path: "/etc/fstab")
-            .with(pattern: "lustre_id_2.fsx.REGION.amazonaws.com@tcp:/mount_name_2 *")
+            .with(pattern: "lustre_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX@tcp:/mount_name_2 *")
         end
 
         it 'deletes shared dir only if it exists and it is empty' do
@@ -423,6 +428,7 @@
           allow(Dir).to receive(:empty?).with("/shared_dir_1").and_return(true)
           allow(Dir).to receive(:exist?).with("/shared_dir_2").and_return(true)
           allow(Dir).to receive(:empty?).with("/shared_dir_2").and_return(false)
+          allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
         end
 
         it 'unmounts fsx only if mounted' do
@@ -440,9 +446,9 @@
             .with(path: "/etc/fstab")
             .with(pattern: "dns_name:/junction_path_1 *")
 
-          is_expected.to edit_delete_lines('remove volume ontap_id_2.fsx.REGION.amazonaws.com:/junction_path_2 from /etc/fstab')
+          is_expected.to edit_delete_lines('remove volume ontap_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX:/junction_path_2 from /etc/fstab')
             .with(path: "/etc/fstab")
-            .with(pattern: "ontap_id_2.fsx.REGION.amazonaws.com:/junction_path_2 *")
+            .with(pattern: "ontap_id_2.fsx.REGION.AWS_DOMAIN_FOR_FSX:/junction_path_2 *")
         end
 
         it 'deletes shared dir only if it exists and it is empty' do
@@ -480,6 +486,7 @@
           allow(Dir).to receive(:empty?).with("/filecache_dir_1").and_return(true)
           allow(Dir).to receive(:exist?).with("/filecache_dir_2").and_return(true)
           allow(Dir).to receive(:empty?).with("/filecache_dir_2").and_return(false)
+          allow_any_instance_of(Object).to receive(:aws_domain_for_fsx).and_return("AWS_DOMAIN_FOR_FSX")
         end
 
         it 'unmounts fsx only if mounted' do