Bug ID 904593: Configuration overwritten when using Cloud Auto Scaling template and ASM Automatic Live Update enabled

Last Modified: Jul 12, 2023

Affected Product(s):
BIG-IP ASM(all modules)

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,, 16.0.0,, 16.0.1,,

Fixed In:

Opened: Apr 28, 2020

Severity: 2-Critical


When a Cloud Auto Scaling deployment is set up using F5's Auto Scale Template, and ASM Live Update is configured with Automatic Download enabled, the configuration may be overwritten during a scale out event when a new host joins the sync cluster. This is caused by a config sync from the new device to the primary device, before the primary has a chance to sync the configuration to the new device, causing the configuration in the primary device to be overwritten.


Configuration of all devices in the Auto Scale group is overwritten.


-- Using F5's Auto Scaling template. -- Auto Scale script is configured with --block-sync (which is the default). -- ASM Live Update is configured with Automatic Download enabled. -- A scale out event occurs.


Disable ASM Live Update Automatic Download. This can be done by disabling the liveupdate.autodownload DB variable using the onboard.js script, and adding '-d liveupdate.autodownload:disable'. For example: /usr/bin/f5-rest-node /config/cloud/aws/node_modules/@f5devcentral/f5-cloud-libs/scripts/onboard.js --log-level silly --signal ONBOARD_DONE -o /var/log/cloud/aws/onboard.log --host localhost --port 8443 -d tm.tcpudptxchecksum:software-only -d liveupdate.autodownload:disable --ping -d tm.tcpudptxchecksum:software-only -d liveupdate.autodownload:disable

Fix Information


Behavior Change

Guides & references

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