[RHEL] Network Manager Restart due to Memory Error

Solution Verified - Updated -

Issue

  • Multiple interface went down and came up on this Openstack compute running on RHEL 7.3.

    Nov 21 09:22:21 abc.linux.lan.infra.ftgroup NetworkManager[1290]: <info>  [1511256141.0250] dns-mgr[0x7f5dfa3c5040]: init: dns=default, rc-manager=file
Nov 21 09:22:21 abc.linux.lan.infra.ftgroup systemd[1]: Started Network Manager.
Nov 21 09:22:21 abc.linux.lan.infra.ftgroup systemd[1]: Starting Network Manager Wait Online...
Nov 21 09:22:21 abc.linux.lan.infra.ftgroup dbus-daemon[1220]: dbus[1220]: [system] Activating via systemd: service name='lan.abc.nm_dispatcher' unit='dbus-lan.abc.nm-dispatcher.service'

Environment

Red Hat OpenStack Platform Version 8.0
Red Hat OpenStack Platform Version 9.0
Red Hat OpenStack Platform Version 10.0

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