Create How-to-enable-Swap-on-Linux.md

docs/manager/basic-concepts-and-troubleshooting/How-to-enable-Swap-on-Linux.md

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+---
+title: How to enbale Swap on Linux
+---
+
+# How to enable Swap for a Linux VPS Without Interruption
+
+This guide explains how to add Swap memory to a VPS that is currently under load and lacks any Swap. Follow these steps carefully to avoid disruptions.
+
+---
+
+## Step 1: Check Current Swap Status  
+First, check the current Swap status:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo swapon --show
+```
+
+</div>
+
+If the output is empty, it means the server has no active Swap.
+
+---
+
+## Step 2: Check Disk Space  
+Ensure there is enough free space on the disk for creating a Swap file. Use the following command:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+df -h
+```
+
+</div>
+
+---
+
+## Step 3: Create a Swap File  
+Create a new Swap file. In this example, we’ll create a 2GB Swap file:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo fallocate -l 2G /swapfile
+```
+
+</div>
+
+If the above command is not supported, use:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo dd if=/dev/zero of=/swapfile bs=1M count=2048
+```
+
+</div>
+
+---
+
+## Step 4: Set File Permissions  
+Secure the Swap file by restricting access:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo chmod 600 /swapfile
+```
+
+</div>
+
+---
+
+## Step 5: Configure the File as Swap  
+Set the newly created file as a Swap file:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo mkswap /swapfile
+```
+
+</div>
+
+---
+
+## Step 6: Enable Swap  
+Activate the Swap file:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo swapon /swapfile
+```
+
+</div>
+
+Now verify the Swap status again to ensure it is active:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+sudo swapon --show
+```
+
+</div>
+
+---
+
+## Step 7: Make Swap Permanent  
+To ensure Swap remains active after a reboot, add the Swap file to the `fstab` file:  
+<div style="text-align: left; direction: ltr;">
+
+```bash
+echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
+```
+
+</div>
+
+---
+
+## Final Notes  
+- **Appropriate Swap Size**: Choose the Swap size based on your server’s needs and available resources.  
+- **Monitor Swap Usage**: After creating the Swap, monitor its usage using tools like `htop` or `free`.  
+
+We hope this guide helps you efficiently manage your server! 😊