LLT connectivity problems occur if iptables is enabled for the heartbeat network cards

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Article ID: 100012218

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Updated On:

Description

Error Message

Peer LLT status down

LLT INFO V-14-1-10205 link 2 (bond0) node 1 in trouble
LLT INFO V-14-1-10024 link 2 (bond0) node 1 active
LLT INFO V-14-1-10205 link 2 (bond0) node 1 in trouble
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 8 sec (34375)
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 9 sec (34375)
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 10 sec (34375)
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 11 sec (34375)
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 12 sec (34375)
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 13 sec (34375)
LLT INFO V-14-1-10510 sent hbreq (NULL) on link 2 (bond0) node 1. 4 more to go.
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 14 sec (34375)
LLT INFO V-14-1-10510 sent hbreq (NULL) on link 2 (bond0) node 1. 3 more to go.
LLT INFO V-14-1-10510 sent hbreq (NULL) on link 2 (bond0) node 1. 2 more to go.
LLT INFO V-14-1-10032 link 2 (bond0) node 1 inactive 15 sec (34375)
LLT INFO V-14-1-10510 sent hbreq (NULL) on link 2 (bond0) node 1. 1 more to go.
LLT INFO V-14-1-10510 sent hbreq (NULL) on link 2 (bond0) node 1. 0 more to go.
LLT INFO V-14-1-10509 link 2 (bond0) node 1 expired

Cause

Iptables can block LLT communication.

Resolution

Disable the iptables service for the network cards that are used as cluster heartbeats.


Applies To

Redhat Linux

Issue/Introduction

If iptables is enabled for a network card that is used for the cluster heartbeats, LLT may report connectivity errors.