From 437c44d42c72661f9b17b35f94879cf42acfecb8 Mon Sep 17 00:00:00 2001
From: Hobby-Student <6012744+Hobby-Student@users.noreply.github.com>
Date: Wed, 25 Mar 2026 19:52:56 +0100
Subject: [PATCH 1/2] feat(compose): add configurable MTU for isolated networks

---
 .../compose/advanced/add-isolation.tsx        | 41 +++++++++++++++++++
 .../drizzle/0165_add_isolated_network_mtu.sql |  1 +
 ...{0155_snapshot.json => 0165_snapshot.json} |  0
 apps/dokploy/drizzle/meta/_journal.json       |  7 ++++
 packages/server/src/db/schema/compose.ts      |  1 +
 packages/server/src/utils/builders/compose.ts |  2 +-
 6 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
 rename apps/dokploy/drizzle/meta/{0155_snapshot.json => 0165_snapshot.json} (100%)

diff --git a/apps/dokploy/components/dashboard/compose/advanced/add-isolation.tsx b/apps/dokploy/components/dashboard/compose/advanced/add-isolation.tsx
index 0fad7d20e6..c7064f21fc 100644
--- a/apps/dokploy/components/dashboard/compose/advanced/add-isolation.tsx
+++ b/apps/dokploy/components/dashboard/compose/advanced/add-isolation.tsx
@@ -28,8 +28,10 @@ import {
 	FormField,
 	FormItem,
 	FormLabel,
+	FormMessage,
 } from "@/components/ui/form";
 
+import { Input } from "@/components/ui/input";
 import { Switch } from "@/components/ui/switch";
 import { api } from "@/utils/api";
 
@@ -40,6 +42,7 @@ interface Props {
 // Schema for Isolated Deployment
 const isolatedSchema = z.object({
 	isolatedDeployment: z.boolean().optional(),
+	isolatedNetworkMtu: z.number().int().min(68).max(9000).nullable().optional(),
 });
 
 type IsolatedSchema = z.infer<typeof isolatedSchema>;
@@ -63,6 +66,7 @@ export const IsolatedDeploymentTab = ({ composeId }: Props) => {
 	const form = useForm<IsolatedSchema>({
 		defaultValues: {
 			isolatedDeployment: false,
+			isolatedNetworkMtu: null,
 		},
 		resolver: zodResolver(isolatedSchema),
 	});
@@ -71,6 +75,7 @@ export const IsolatedDeploymentTab = ({ composeId }: Props) => {
 		if (data) {
 			form.reset({
 				isolatedDeployment: data?.isolatedDeployment || false,
+				isolatedNetworkMtu: data?.isolatedNetworkMtu ?? null,
 			});
 		}
 	}, [form, form.reset, form.formState.isSubmitSuccessful, data]);
@@ -79,6 +84,7 @@ export const IsolatedDeploymentTab = ({ composeId }: Props) => {
 		await updateCompose({
 			composeId,
 			isolatedDeployment: formData?.isolatedDeployment || false,
+			isolatedNetworkMtu: formData?.isolatedNetworkMtu ?? null,
 		})
 			.then(async (_data) => {
 				await refetch();
@@ -180,6 +186,41 @@ export const IsolatedDeploymentTab = ({ composeId }: Props) => {
 									/>
 								</div>
 
+								{form.watch("isolatedDeployment") && (
+									<div>
+										<FormField
+											control={form.control}
+											name="isolatedNetworkMtu"
+											render={({ field }) => (
+												<FormItem className="mt-4 rounded-lg border p-3 shadow-sm">
+													<div className="space-y-0.5">
+														<FormLabel>
+															Network MTU (optional)
+														</FormLabel>
+														<FormDescription>
+															Set a custom MTU for the isolated network. Leave empty for Docker default (1500). Use 1350 for environments behind VPN/overlay networks.
+														</FormDescription>
+													</div>
+													<FormControl>
+														<Input
+															type="number"
+															min={68}
+															max={9000}
+															placeholder="1500"
+															value={field.value ?? ""}
+															onChange={(e) => {
+																const val = e.target.value;
+																field.onChange(val === "" ? null : Number(val));
+															}}
+														/>
+													</FormControl>
+													<FormMessage />
+												</FormItem>
+											)}
+										/>
+									</div>
+								)}
+
 								<div className="flex flex-col lg:flex-row gap-4 w-full items-end justify-end">
 									<Button
 										form="isolated-deployment-form"
diff --git a/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql b/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
new file mode 100644
index 0000000000..f2adf0d905
--- /dev/null
+++ b/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
@@ -0,0 +1 @@
+ALTER TABLE "compose" ADD COLUMN "isolatedNetworkMtu" integer;
\ No newline at end of file
diff --git a/apps/dokploy/drizzle/meta/0155_snapshot.json b/apps/dokploy/drizzle/meta/0165_snapshot.json
similarity index 100%
rename from apps/dokploy/drizzle/meta/0155_snapshot.json
rename to apps/dokploy/drizzle/meta/0165_snapshot.json
diff --git a/apps/dokploy/drizzle/meta/_journal.json b/apps/dokploy/drizzle/meta/_journal.json
index 1c6d9a924c..2938829d7c 100644
--- a/apps/dokploy/drizzle/meta/_journal.json
+++ b/apps/dokploy/drizzle/meta/_journal.json
@@ -1156,6 +1156,13 @@
       "when": 1775369858244,
       "tag": "0164_slippery_sasquatch",
       "breakpoints": true
+    },
+    {
+      "idx": 165,
+      "version": "7",
+      "when": 1774490000000,
+      "tag": "0165_add_isolated_network_mtu",
+      "breakpoints": true
     }
   ]
 }
\ No newline at end of file
diff --git a/packages/server/src/db/schema/compose.ts b/packages/server/src/db/schema/compose.ts
index 7803cb0a76..6e529dc8fe 100644
--- a/packages/server/src/db/schema/compose.ts
+++ b/packages/server/src/db/schema/compose.ts
@@ -80,6 +80,7 @@ export const compose = pgTable("compose", {
 	suffix: text("suffix").notNull().default(""),
 	randomize: boolean("randomize").notNull().default(false),
 	isolatedDeployment: boolean("isolatedDeployment").notNull().default(false),
+	isolatedNetworkMtu: integer("isolatedNetworkMtu"),
 	// Keep this for backward compatibility since we will not add the prefix anymore to volumes
 	isolatedDeploymentsVolume: boolean("isolatedDeploymentsVolume")
 		.notNull()
diff --git a/packages/server/src/utils/builders/compose.ts b/packages/server/src/utils/builders/compose.ts
index 3165706266..d38463e9c7 100644
--- a/packages/server/src/utils/builders/compose.ts
+++ b/packages/server/src/utils/builders/compose.ts
@@ -53,7 +53,7 @@ Compose Type: ${composeType} ✅`;
 
 		cd "${projectPath}";
 
-		${compose.isolatedDeployment ? `docker network inspect ${compose.appName} >/dev/null 2>&1 || docker network create ${compose.composeType === "stack" ? "--driver overlay" : ""} --attachable ${compose.appName}` : ""}
+		${compose.isolatedDeployment ? `docker network inspect ${compose.appName} >/dev/null 2>&1 || docker network create ${compose.composeType === "stack" ? "--driver overlay" : ""} --attachable ${compose.composeType !== "stack" && compose.isolatedNetworkMtu ? `--opt com.docker.network.driver.mtu=${compose.isolatedNetworkMtu}` : ""} ${compose.appName}` : ""}
 		env -i PATH="$PATH" ${exportEnvCommand} docker ${command.split(" ").join(" ")} 2>&1 || { echo "Error: ❌ Docker command failed"; exit 1; }
 		${compose.isolatedDeployment ? `docker network connect ${compose.appName} $(docker ps --filter "name=dokploy-traefik" -q) >/dev/null 2>&1` : ""}
 

From 2ab3bd3d7641ad7a358329ffe0b4adca7b7ed411 Mon Sep 17 00:00:00 2001
From: Hobby-Student <6012744+Hobby-Student@users.noreply.github.com>
Date: Thu, 9 Apr 2026 12:57:18 +0200
Subject: [PATCH 2/2] fix(compose): add trailing newline to migration and MTU
 mismatch check

Add missing trailing newline to migration SQL file. Log an info message
during deployment when the isolated network's current MTU differs from
the configured value, indicating the network must be recreated.
---
 apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql | 2 +-
 packages/server/src/utils/builders/compose.ts          | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql b/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
index f2adf0d905..4bf0153b1c 100644
--- a/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
+++ b/apps/dokploy/drizzle/0165_add_isolated_network_mtu.sql
@@ -1 +1 @@
-ALTER TABLE "compose" ADD COLUMN "isolatedNetworkMtu" integer;
\ No newline at end of file
+ALTER TABLE "compose" ADD COLUMN "isolatedNetworkMtu" integer;
diff --git a/packages/server/src/utils/builders/compose.ts b/packages/server/src/utils/builders/compose.ts
index d38463e9c7..46332228b0 100644
--- a/packages/server/src/utils/builders/compose.ts
+++ b/packages/server/src/utils/builders/compose.ts
@@ -53,7 +53,12 @@ Compose Type: ${composeType} ✅`;
 
 		cd "${projectPath}";
 
-		${compose.isolatedDeployment ? `docker network inspect ${compose.appName} >/dev/null 2>&1 || docker network create ${compose.composeType === "stack" ? "--driver overlay" : ""} --attachable ${compose.composeType !== "stack" && compose.isolatedNetworkMtu ? `--opt com.docker.network.driver.mtu=${compose.isolatedNetworkMtu}` : ""} ${compose.appName}` : ""}
+		${compose.isolatedDeployment ? `
+			if docker network inspect ${compose.appName} >/dev/null 2>&1; then
+				${compose.composeType !== "stack" && compose.isolatedNetworkMtu ? `CURRENT_MTU=$(docker network inspect ${compose.appName} --format '{{index .Options "com.docker.network.driver.mtu"}}'); if [ "$CURRENT_MTU" != "${compose.isolatedNetworkMtu}" ]; then echo "Info: Network ${compose.appName} has MTU $CURRENT_MTU but configured MTU is ${compose.isolatedNetworkMtu}. The network must be recreated for the new MTU to take effect."; fi` : "true"}
+			else
+				docker network create ${compose.composeType === "stack" ? "--driver overlay" : ""} --attachable ${compose.composeType !== "stack" && compose.isolatedNetworkMtu ? `--opt com.docker.network.driver.mtu=${compose.isolatedNetworkMtu}` : ""} ${compose.appName}
+			fi` : ""}
 		env -i PATH="$PATH" ${exportEnvCommand} docker ${command.split(" ").join(" ")} 2>&1 || { echo "Error: ❌ Docker command failed"; exit 1; }
 		${compose.isolatedDeployment ? `docker network connect ${compose.appName} $(docker ps --filter "name=dokploy-traefik" -q) >/dev/null 2>&1` : ""}