---
** [tickets:#3108] rded: dual active controllers can be elected**
**Status:** accepted
**Milestone:** 5.20.01
**Created:** Wed Oct 30, 2019 02:30 AM UTC by Gary Lee
**Last Updated:** Wed Oct 30, 2019 02:30 AM UTC
**Owner:** Gary Lee
Enable split brain prevention with TCP arbitrator with relaxed node promotion
enabled. On rare occassions, dual active controllers can be seen at cluster
startup.
2019-10-22 18:39:12.457 SC-1 osafclmna[141]: Started
2019-10-22 18:39:12.482 SC-1 osafrded[151]: Started
2019-10-22 18:39:12.659 SC-1 osafclmna[141]: NO Starting to promote this node
to a system controller
2019-10-22 18:39:12.659 SC-1 osafrded[151]: NO Requesting ACTIVE role
2019-10-22 18:39:12.660 SC-1 osafrded[151]: NO RDE role set to Undefined
2019-10-22 18:39:18.198 SC-1 osafrded[151]: NO Peer up on node 0x2020f
2019-10-22 18:39:18.199 SC-1 osafrded[151]: NO Got peer info response from node
0x2020f with role Undefined
2019-10-22 18:39:18.200 SC-1 osafrded[151]: NO Peer down on node 0x2020f
2019-10-22 18:39:20.201 SC-1 osafrded[151]: NO Relaxed node promotion enabled.
This node is a candidate.
2019-10-22 18:39:20.457 SC-1 osafrded[151]: NO Locked failed:
2019-10-22 18:39:21.580 SC-1 osafrded[151]: NO Locked failed:
2019-10-22 18:39:22.363 SC-1 osafclmna[141]: NO
safNode=SC-1,safCluster=myClmCluster Joined cluster, nodeid=2010f
2019-10-22 18:39:22.760 SC-1 osafrded[151]: NO Locked failed:
2019-10-22 18:39:23.907 SC-1 osafrded[151]: NO Locked failed:
2019-10-22 18:39:23.907 SC-1 osafrded[151]: WA Failed to promote this node (6)
2019-10-22 18:39:23.907 SC-1 osafrded[151]: WA Unable to set active controller
in consensus service
2019-10-22 18:39:23.907 SC-1 osafrded[151]: WA Will become active anyway
2019-10-22 18:39:23.907 SC-1 osafrded[151]: NO Running
'/usr/local/lib/opensaf/opensaf_sc_active' with 0 argument(s)
2019-10-22 18:39:24.213 SC-1 osafrded[151]: NO Locked failed:
2019-10-22 18:39:24.628 SC-1 osafrded[151]: NO Switched to ACTIVE from Undefined
2019-10-22 18:39:24.761 SC-1 /tcp.plugin: cannot heartbeat, inform rded
2019-10-22 18:39:15.395 SC-2 osafclmna[141]: Started
2019-10-22 18:39:15.543 SC-2 osafrded[151]: Started
2019-10-22 18:39:15.621 SC-2 osafclmna[141]: NO Starting to promote this node
to a system controller
2019-10-22 18:39:15.622 SC-2 osafrded[151]: NO Requesting ACTIVE role
2019-10-22 18:39:15.622 SC-2 osafrded[151]: NO RDE role set to Undefined
2019-10-22 18:39:15.622 SC-2 osafrded[151]: NO Peer up on node 0x2010f
2019-10-22 18:39:17.263 SC-2 osafrded[151]: NO Relaxed node promotion enabled.
This node is a candidate.
2019-10-22 18:39:17.501 SC-2 osafrded[151]: NO Locked failed:
2019-10-22 18:39:18.198 SC-2 osafrded[151]: NO Got peer info response from node
0x2010f with role Undefined
2019-10-22 18:39:18.199 SC-2 osafrded[151]: NO RDE role set to QUIESCED
2019-10-22 18:39:18.199 SC-2 osafrded[151]: NO Giving up election against
0x2010f with role Undefined. My role is now QUIESCED
2019-10-22 18:39:18.644 SC-2 osafrded[151]: NO Locked failed:
2019-10-22 18:39:19.764 SC-2 osafrded[151]: NO Locked failed:
2019-10-22 18:39:20.894 SC-2 osafrded[151]: NO Locked failed:
2019-10-22 18:39:20.894 SC-2 osafrded[151]: WA Failed to promote this node (6)
2019-10-22 18:39:20.894 SC-2 osafrded[151]: WA Unable to set active controller
in consensus service
2019-10-22 18:39:20.894 SC-2 osafrded[151]: WA Will become active anyway
2019-10-22 18:39:20.894 SC-2 osafrded[151]: NO Running
'/usr/local/lib/opensaf/opensaf_sc_active' with 0 argument(s)
2019-10-22 18:39:21.150 SC-2 osafrded[151]: NO Locked failed:
2019-10-22 18:39:21.567 SC-2 osafrded[151]: NO Switched to ACTIVE from QUIESCED
2019-10-22 18:39:21.681 SC-2 /tcp.plugin: cannot heartbeat, inform rded
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