# Role of monitoring node in HA group setup

**URL:** <https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155>\
**Category:** Solace Event Broker\
**Tags:** failover, monitoring\
**Created:** [January 10, 2020, 2:39pm UTC](https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155 "2020-01-10T14:39:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rdesoju](https://avatars.discourse-cdn.com/v4/letter/r/a4c791/32.png) [@rdesoju](https://community.solace.com/u/rdesoju)\
**Post date:** [January 10, 2020, 2:39pm UTC](https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155/1 "2020-01-10T14:39:36Z")

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Hi,  
What is the role of monitoring node in a HA Group (Primary/Standby) setup?  
It seems that clients are able to failover back and forth even though monitoring node is down.

Thanks,  
Raghu

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**Author:** ![system](https://canada1.discourse-cdn.com/solace/original/1X/1248f38eea018157e66cc024e8284f3331a54f94.png) [@system](https://community.solace.com/u/system)\
**Post date:** [January 10, 2020, 6:07pm UTC](https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155/2 "2020-01-10T18:07:04Z")

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Hi Raghu, the monitoring node participates in the leader-election voting mechanism only. It doesn’t store or replicate messages.

The HA model can tolerate loss of one node, so without the voting node you can still run the two messaging nodes, and administratively fail them over to each other. Please note though that if one of those messaging nodes fails as well, the last node would stop all messaging activity until either the voting node or the peer messaging nodes returns to the HA-group.

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**Author:** ![rdesoju](https://avatars.discourse-cdn.com/v4/letter/r/a4c791/32.png) [@rdesoju](https://community.solace.com/u/rdesoju)\
**Post date:** [January 10, 2020, 6:48pm UTC](https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155/3 "2020-01-10T18:48:10Z")

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Thank you very much for the information @kov !

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**Author:** ![hong](https://yyz1.discourse-cdn.com/solace/user_avatar/community.solace.com/hong/32/1613_2.png) [@hong](https://community.solace.com/u/hong)\
**Post date:** [January 24, 2020, 4:13pm UTC](https://community.solace.com/t/role-of-monitoring-node-in-ha-group-setup/155/4 "2020-01-24T16:13:35Z")

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@rdesoju Can you accept the answer? Thanks