DDoS attack killed the LoadMaster
Information
| Summary: |
DDoS attack killed the LoadMaster |
| Environment: |
Product:LoadMaster Version:All Platform: All Application:WAF |
| Question/Problem Description: |
The LoadMaster at some point actually failed and moved to the slave. |
| Steps to Reproduce: | |
| Error Message: | 2022-11-14T10:35:21+01:00 AMS-KEMP-01 ucarp: [ERROR] eth1: device write failed. Reconnecting 2022-11-14T10:35:22+01:00 AMS-KEMP-01 ucarp: [WARNING] Switching to state: BACKUP 2022-11-14T10:35:22+01:00 AMS-KEMP-01 ucarp: [WARNING] Interface v1051(vlan81) taken down 2022-11-14T10:35:22+01:00 AMS-KEMP-01 ucarp: [WARNING] Spawning [/etc/ha.d/down down] |
| Defect Number: | |
| Enhancement Number: | |
| Cause: | The network is being hammered, all TCP sockets are being dropped to prevent a DDOS and then the interface failed. |
| Resolution: | Box is overloaded with connections. Eth1 failed and caused the fail over. |
| Workaround: | |
| Notes: |
https://support.kemptechnologies.com/hc/en-us/articles/10109249551501-Rate-Limiting
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