Introduce admin.CreationParams

dnsmasq/bin/dnsmasq-entrypoint

@@ -16,13 +16,15 @@ tmp="$(mktemp -d -t cryptic-net-dnsmasq-entrypoint-XXX)"
     thisHostName=$(tar xzf "$_BOOTSTRAP_PATH" --to-stdout ./hostname)
     thisHostIP=$(cat "$tmp"/hosts/"$thisHostName".yml | yq '.nebula.ip')
 
+    domain=$(tar xzf "$_BOOTSTRAP_PATH" --to-stdout ./admin/creation-params.yml | yq '.domain')
+
     echo "listen-address=$thisHostIP" >> "$conf_path"
 
     ls -1 "$tmp"/hosts | while read hostYml; do
 
         hostName=$(echo "$hostYml" | cut -d. -f1)
         hostIP=$(cat "$tmp"/hosts/"$hostYml" | yq '.nebula.ip')
-        echo "address=/${hostName}.hosts.cryptic.io/$hostIP" >> "$conf_path"
+        echo "address=/${hostName}.hosts.$domain/$hostIP" >> "$conf_path"
 
     done
 )

go-workspace/src/admin/admin.go

@@ -14,6 +14,8 @@ import (
 )
 
 const (
+	creationParamsPath = "admin/creation-params.yml"
+
 	nebulaCertsCACertPath = "nebula/certs/ca.crt"
 	nebulaCertsCAKeyPath  = "nebula/certs/ca.key"
 
@@ -22,8 +24,17 @@ const (
 	garageRPCSecretPath          = "garage/rpc-secret.txt"
 )
 
+// CreationParams are general parameters used when creating a new network. These
+// are available to all hosts within the network via their bootstrap files.
+type CreationParams struct {
+	Domain string   `yaml:"domain"`
+	CIDRs  []string `yaml:"cidrs"`
+}
+
 // Admin is used for accessing all information contained within an admin.tgz.
 type Admin struct {
+	CreationParams CreationParams
+
 	NebulaCACert nebula.CACert
 
 	GarageRPCSecret                    string
@@ -41,6 +52,7 @@ func FromFS(adminFS fs.FS) (Admin, error) {
 		into interface{}
 		path string
 	}{
+		{&a.CreationParams, creationParamsPath},
 		{&a.GarageGlobalBucketS3APICredentials, garageGlobalBucketKeyYmlPath},
 		{&a.GarageAdminBucketS3APICredentials, garageAdminBucketKeyYmlPath},
 	}
@@ -91,6 +103,7 @@ func (a Admin) WriteTo(into io.Writer) error {
 		value interface{}
 		path  string
 	}{
+		{a.CreationParams, creationParamsPath},
 		{a.GarageGlobalBucketS3APICredentials, garageGlobalBucketKeyYmlPath},
 		{a.GarageAdminBucketS3APICredentials, garageAdminBucketKeyYmlPath},
 	}

go-workspace/src/bootstrap/bootstrap.go

@@ -3,6 +3,7 @@
 package bootstrap
 
 import (
+	"cryptic-net/admin"
 	"cryptic-net/garage"
 	"cryptic-net/nebula"
 	"cryptic-net/tarutil"
@@ -20,12 +21,15 @@ import (
 
 // Paths within the bootstrap FS which for general data.
 const (
-	hostNamePath = "hostname"
+	adminCreationParamsPath = "admin/creation-params.yml"
+	hostNamePath            = "hostname"
 )
 
 // Bootstrap is used for accessing all information contained within a
 // bootstrap.tgz file.
 type Bootstrap struct {
+	AdminCreationParams admin.CreationParams
+
 	Hosts    map[string]Host
 	HostName string
 
@@ -48,12 +52,18 @@ func FromFS(bootstrapFS fs.FS) (Bootstrap, error) {
 		return Bootstrap{}, fmt.Errorf("loading hosts info from fs: %w", err)
 	}
 
-	if err = yamlutil.LoadYamlFSFile(
-		&b.GarageGlobalBucketS3APICredentials,
-		bootstrapFS,
-		garageGlobalBucketKeyYmlPath,
-	); err != nil {
-		return Bootstrap{}, fmt.Errorf("loading %q from fs: %w", garageGlobalBucketKeyYmlPath, err)
+	filesToLoadAsYAML := []struct {
+		into interface{}
+		path string
+	}{
+		{&b.AdminCreationParams, adminCreationParamsPath},
+		{&b.GarageGlobalBucketS3APICredentials, garageGlobalBucketKeyYmlPath},
+	}
+
+	for _, f := range filesToLoadAsYAML {
+		if err := yamlutil.LoadYamlFSFile(f.into, bootstrapFS, f.path); err != nil {
+			return Bootstrap{}, fmt.Errorf("loading %q from fs: %w", f.path, err)
+		}
 	}
 
 	filesToLoadAsString := []struct {
@@ -106,6 +116,36 @@ func (b Bootstrap) WriteTo(into io.Writer) error {
 
 	w := tarutil.NewTGZWriter(into)
 
+	for _, host := range b.Hosts {
+
+		hostB, err := yaml.Marshal(host)
+		if err != nil {
+			return fmt.Errorf("yaml encoding host %#v: %w", host, err)
+		}
+
+		path := filepath.Join(hostsDirPath, host.Name+".yml")
+
+		w.WriteFileBytes(path, hostB)
+	}
+
+	filesToWriteAsYAML := []struct {
+		value interface{}
+		path  string
+	}{
+		{b.AdminCreationParams, adminCreationParamsPath},
+		{b.GarageGlobalBucketS3APICredentials, garageGlobalBucketKeyYmlPath},
+	}
+
+	for _, f := range filesToWriteAsYAML {
+
+		b, err := yaml.Marshal(f.value)
+		if err != nil {
+			return fmt.Errorf("yaml encoding data for %q: %w", f.path, err)
+		}
+
+		w.WriteFileBytes(f.path, b)
+	}
+
 	filesToWriteAsString := []struct {
 		value string
 		path  string
@@ -121,25 +161,6 @@ func (b Bootstrap) WriteTo(into io.Writer) error {
 		w.WriteFileBytes(f.path, []byte(f.value))
 	}
 
-	garageGlobalBucketKeyB, err := yaml.Marshal(b.GarageGlobalBucketS3APICredentials)
-	if err != nil {
-		return fmt.Errorf("yaml encoding garage global bucket creds: %w", err)
-	}
-
-	w.WriteFileBytes(garageGlobalBucketKeyYmlPath, garageGlobalBucketKeyB)
-
-	for _, host := range b.Hosts {
-
-		hostB, err := yaml.Marshal(host)
-		if err != nil {
-			return fmt.Errorf("yaml encoding host %#v: %w", host, err)
-		}
-
-		path := filepath.Join(hostsDirPath, host.Name+".yml")
-
-		w.WriteFileBytes(path, hostB)
-	}
-
 	return w.Close()
 }
 

go-workspace/src/cmd/entrypoint/admin.go

@@ -88,6 +88,8 @@ var subCmdAdminMakeBootstrap = subCmd{
 		}
 
 		newBootstrap := bootstrap.Bootstrap{
+			AdminCreationParams: adm.CreationParams,
+
 			Hosts:    hosts,
 			HostName: *name,