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remote_upgrade_poc
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| remote_upgrade_poc [2023/06/27 00:01] – [Remote Upgrade types] -move body text below into bulleted sections. hogwild | remote_upgrade_poc [2023/07/01 01:28] – [Preservation of Parameters and Restore Process]-formatting hogwild | ||
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| - A VPN server is configured, enabled and working. | - A VPN server is configured, enabled and working. | ||
| - Dropbear/ | - Dropbear/ | ||
| - | - The internal network has an Ethernet LAN client that accessible via Teamviewer, once Internet connectivity | + | - The internal network has an Ethernet LAN client that accessible via Teamviewer, |
| Line 116: | Line 116: | ||
| There are several types of remote upgrades. They can be summarized in order of risk, as follows: | There are several types of remote upgrades. They can be summarized in order of risk, as follows: | ||
| + | | ||
| + | | ||
| + | * Dirty upgrade - overwrites the firmware and retains current NVRAM settings. This is probably \\ the safest method. It will function similar to an upgrade using the router' | ||
| + | * Clean upgrade - overwrites firmware and erases NVRAM settings, (restoring the default ones). \\ This will restore default settings, IP address and logon credentials. This is generally not a good option \\ when doing a remote upgrade. However, it can speed up the upgrade process if you're beside the router. \\ \\ | ||
| + | * Advanced upgrade - overwrites firmware, saves selected NVRAM configuration, | ||
| - | * Dirty upgrade - overwrites the firmware and retains current NVRAM settings. \\ This is probably the safest method. It will function similar to an upgrade using the router' | + | |
| - | * Clean upgrade - overwrites the firmware and erases NVRAM settings, (restoring the default ones). \\ This will restore the default settings, IP address and logon credentials. This is generally not a good option when doing a remote upgrade. However, it can useful for speeding up the upgrade process if you are physically beside the router. | + | |
| - | * Advanced upgrade - overwrites firmware, saves selected NVRAM configuration, | + | |
| - | + | ||
| - | A dirty upgrade is probably the least risky method. It will function similar to an upgrade using the router' | + | |
| - | + | ||
| - | A clean upgrade will restore the default settings, IP address and logon credentials. This is generally not a good option when doing a remote upgrade. However, it can useful for speeding up the upgrade process if you are physically beside the hardware device. | + | |
| - | + | ||
| - | Advanced upgrades should be used only in unusual cases. Such cases include sensitive remote installations, | + | |
| - | + | ||
| ==== Dirty Upgrade ==== | ==== Dirty Upgrade ==== | ||
| Line 163: | Line 158: | ||
| - Evaluate the use of external files for certificates. | - Evaluate the use of external files for certificates. | ||
| - | - Evaluate the use of an external file for the list of parameters | + | - Evaluate the use of an external file for the list of parameters to be preserved. |
| - Replace the: `....` notation for subshell with FreshTomato' | - Replace the: `....` notation for subshell with FreshTomato' | ||
| - | - Consider handling EOL of files you reference internally. There are many sed examples on how to achieve | + | - Consider handling EOL of files you reference internally. There are many sed examples |
| - Consider defining the USB path as a variable at the beginning of your script. | - Consider defining the USB path as a variable at the beginning of your script. | ||
| - | - Remember: some devices might have multiple USB drives plugged/ | + | - Remember: some devices might have multiple USB drives plugged/ |
| \\ | \\ | ||
| Line 178: | Line 173: | ||
| The Main Preserve Script, with a list of parameters to save, creates the Restore script with actual parameter values. | The Main Preserve Script, with a list of parameters to save, creates the Restore script with actual parameter values. | ||
| - | **Caution: Unexpected side effects can occur if any parameter value contains the single quote (') character. | + | **Caution: Unexpected side effects can occur if any parameter value contains the single quote (') character. Consider replacing single quotes with double |
| - | + | ||
| - | **Consider replacing single quotes with double | + | |
| \\ | \\ | ||
| - | After every upgrade, you should review the FreshTomato | + | After every upgrade, you should review the FreshTomato |
| - Bug fixes | - Bug fixes | ||
| Line 190: | Line 183: | ||
| - New features | - New features | ||
| - Explicit recommendations from the developers | - Explicit recommendations from the developers | ||
| + | |||
| \\ | \\ | ||
| Line 203: | Line 197: | ||
| \\ | \\ | ||
| + | |||
| <code bash> | <code bash> | ||
| #!/bin/sh | #!/bin/sh | ||
| Line 697: | Line 692: | ||
| | | ||
| ===== Alternatives ===== | ===== Alternatives ===== | ||
| + | |||
| - Compile your own firmware with your settings hard-coded within it. | - Compile your own firmware with your settings hard-coded within it. | ||
| - Building the compilation environment requires a lot of effort. | - Building the compilation environment requires a lot of effort. | ||
| - Consolidated experience with such process is necessary. | - Consolidated experience with such process is necessary. | ||
| - | - Several previous attempts were made using directions from: freshtomato-arm [[https:// | + | - Several previous attempts were made using directions from: freshtomato-arm [[https:// |
| ===== References and Online Resources ===== | ===== References and Online Resources ===== | ||
remote_upgrade_poc.txt · Last modified: 2023/07/13 17:05 by hogwild
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