Document Type | Troubleshooting
Category | Administration
Applicable Product Versions | 6FS06, 6FS07
Document Number | TADTS024
Issue
This explains the phenomenon where the VIP is deactivated in CM because the network interface cannot be found.
This occurs when the network interface remains in Promiscuous mode (a mode that receives packets from all MAC addresses) or in a specific capture state and cannot be detected, as in the following cases.
- Using tcpdump with the -X option
- Using the iptrace command
NoteAffected Versions: Tibero6 FS06, Tibero 6 FS07, AIX OS
Cause
- Tibero uses pcap (Packet Capture Library used in AIX) to find the interface and add the VIP when using VIP in CM.
- The server also uses the pcap library when running tcpdump and iptrace.
- If NIC (network interface card) information is not displayed with tcpdump -D in both cases, the pcap library within the CM's VIP check logic will also not detect NIC information.
Solutions
1. Using tcpdump with the -X option
- Kill the process running tcpdump -X with kill -9
- Perform VIP activation
- cmrctl act vip --name [VIP name]
2. Using the iptrace command
- Kill the process using iptrace with kill -15 (If killed with kill -9, reinitialize network socket-related resources with the iptrace -u command.)
- Perform VIP activation
- cmrctl act vip --name [VIP name]