Fix: node muter upload work perfectly on local but got stuck on ubuntu server

 If you're experiencing issues with a file upload using `multer` that work perfectly on your local environment but get stuck on an Ubuntu server, there could be several reasons behind this behavior. Here are some common troubleshooting steps to identify and resolve the issue:


1. **Check Dependencies and Versions**:

   - Ensure that you have the required Node.js and `multer` versions installed on your Ubuntu server. Run `npm ls multer` to check the version.

   - Confirm that the Ubuntu server environment matches your local development environment in terms of Node.js, npm, and other dependencies.


2. **Network or Firewall Issues**:

   - Check if there are any network or firewall restrictions on your Ubuntu server that might be blocking the file upload process. Ensure that the server can make outbound requests if necessary.


3. **Error Handling**:

   - Implement proper error handling and logging in your Node.js application to capture any errors or exceptions that might be occurring during the file upload process.


4. **File System Permissions**:

   - Verify that the Ubuntu server has the necessary file system permissions to write uploaded files to the designated upload directory. You might need to adjust file permissions with `chmod` or change the owner with `chown`.


5. **Available Disk Space**:

   - Check if there is sufficient disk space on the Ubuntu server for storing uploaded files. Lack of disk space can cause issues with file uploads.


6. **Configuration Differences**:

   - Review your `multer` configuration on the Ubuntu server. Ensure that the upload directory, storage options, and file size limits are correctly configured to match your local environment.


7. **Nginx or Reverse Proxy**:

   - If you are using Nginx or another reverse proxy on the Ubuntu server, check its configuration to make sure it doesn't interfere with file uploads. You might need to configure proxy settings correctly.


8. **Use Logging**:

   - Implement extensive logging throughout your application, including the file upload middleware. This will help you trace the issue and identify where it's getting stuck.


9. **Check for Server Load**:

   - Examine the server's resource utilization, including CPU and memory usage, to ensure that it's not overloaded, which could lead to slow or unresponsive behavior.


10. **Network Latency**:

    - Consider potential network latency between your local environment and the Ubuntu server. Slow network connections can affect file upload performance.


By systematically investigating these areas, you should be able to identify the cause of the issue with the `multer` file upload on your Ubuntu server and take appropriate actions to resolve it. If the problem persists, providing specific error messages or logs would be helpful for further assistance.

Comments

Post a Comment

Popular posts from this blog

bad character U+002D '-' in my helm template

 In Helm templates, the hyphen character (`-`) can sometimes be treated as a reserved character, particularly when defining values or labels. To include a hyphen character in a Helm template without issues, you can use one of the following approaches: 1. **Quoting the Hyphen:**    You can enclose the hyphen in double quotes, like this:    ```yaml    key: "-"    ```    This way, Helm will interpret the hyphen as a string rather than an operator. 2. **Using Backticks:**    If you need to use the hyphen within a Go template function or inside backticks, you can escape it with a backslash (`\`), like this:    ```yaml    value: `{{ .Values.someField | printf "%s \\-" }}`    ```    The backslash prevents Helm from interpreting the hyphen as a special character. 3. **Variable Assignment:**    Assign the value to a variable and use it. For example:    ```yaml    {{- $hyphen := "-" }}    key: {{ $hyphen }}    ```    This way, you can use the variable `$hyphen` wher
Read more

GitLab pipeline stopped working with invalid yaml error

 When your GitLab pipeline has stopped working with an "invalid YAML" error, it means there's a problem with your `.gitlab-ci.yml` file. This could be due to syntax errors, incorrect indentation, or other issues in your pipeline configuration. Here's how to troubleshoot and resolve this issue: 1. **Check for Syntax Errors**:    Carefully review your `.gitlab-ci.yml` file for any syntax errors. Common issues include missing colons, indentation problems, or mismatched quotation marks. Use a YAML linter or an online YAML validator to identify and correct syntax errors. 2. **Indentation**:    YAML relies heavily on proper indentation. Make sure that all lines within the same block have consistent indentation (typically using spaces, not tabs). Incorrect indentation can cause YAML parsing errors. 3. **Dashes and Lists**:    Ensure that you use the correct syntax for lists (arrays) in YAML by starting each item with a dash (`-`). Be consistent with your use of dashes throug
Read more

How do I add a printer in OpenSUSE which is being shared by a CUPS print server?

 To add a printer in openSUSE that is being shared by a CUPS print server, you can use the following steps: 1. **Ensure CUPS Client is Installed:**    Make sure your openSUSE system has the CUPS client tools installed. You can install them using the following command:    ```bash    sudo zypper install cups-client    ``` 2. **Discover Available Printers:**    Use the `lpinfo` command to discover available printers on your CUPS print server. Replace `cups-server-hostname` with the hostname or IP address of your CUPS server:    ```bash    lpinfo -v -h cups-server-hostname:631    ```    This command should list the printers shared by the CUPS server. 3. **Add a Printer:**    Use the `lpadmin` command to add a printer. Replace `printer-name` with the name of the printer you want to add and `printer-uri` with the URI obtained from the `lpinfo` command:    ```bash    sudo lpadmin -p printer-name -E -v printer-uri    ```    For example:    ```bash    sudo lpadmin -p MyPrinter -E -v socket://cu
Read more