Last Modified: Apr 24, 2024
Affected Product(s):
BIG-IP DNS
Known Affected Versions:
14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3
Fixed In:
17.1.1
Opened: Feb 16, 2022 Severity: 2-Critical
1) The mcpd process may crash, potentially leading to failover/momentary traffic disruption while system components restart 2) Log entries refering to the 'iqsyncer' module similar to the following may be observed prior to the crash notice mcpd[32268]: 01070751:5: start_transaction received without previous end_transaction - connection 0x62773308 (user %iqsyncer) notice mcpd[6269]: 010714a0:5: Sync of device group /Common/gtm to commit id 17072 7051583675817774674 /Common/abcd.xyz 0 from device %iqsyncer complete. notice mcpd[6269]: 01070418:5: connection 0x64c0c008 (user %iqsyncer) was closed with active requests 3) Log entries similar to the following may be observed indicating failure and restart in the mcpd component: err icr_eventd[11664]: 01a10003:3: Receive MCP msg failed: Can't recv, status: 0x1020046 warning snmpd[8096]: 010e0004:4: MCPD query response exceeding 270 seconds. err icr_eventd[11664]: 01a10003:3: Receive MCP msg failed: Can't recv, status: 0x1020046 notice sod[9497]: 01140041:5: Killing /usr/bin/mcpd pid 12325. warning sod[9497]: 01140029:4: high availability (HA) daemon_heartbeat mcpd fails action is restart. crit tmsh[31348]: 01420001:2: The connection to mcpd has been lost, try again. : framework/RemoteMcpConn.cpp, line 74 crit tmsh[31434]: 01420001:2: The connection to mcpd has been lost, try again. : framework/RemoteMcpConn.cpp, line 74 info sod[9497]: 010c0009:6: Lost connection to mcpd - reestablishing. err mysqlhad[17260]: 014e0006:3: MCP Failure: 1.
Traffic disrupted while mcpd restarts.
DNS/GTM installation with syncgroup members actively exchanging configuration items. The issue happens rarely unless a lot of configuration changes occur on one of the syncgroup members, which needs to be carried over.
None
iqsyncer module fixed to process large volume of traffic correctly now