In Data ONTAP 7-Mode, there’s a chance that the
configuration of the controller may not have been completely saved to the config files prior to
reboot, so after reboot the controller’s configuration may deviate from the
original config causing problems. This could also apply to a dual controller
scenario where a cf takeover is done on
the other controller prior to rebooting, and then the cf giveback done later.
Is there a way to check the config beforehand?
Setup writes these configuration files:
/etc/rc
/etc/exports
/etc/hosts
/etc/hosts.equiv
/etc/dgateways
/etc/nsswitch.conf
/etc/resolv.conf
To read these files via the Data ONTAP CLI, simply run:
rdfile /etc/rc
rdfile /etc/exports
rdfile /etc/hosts
rdfile /etc/hosts.equiv
rdfile /etc/dgateways
rdfile /etc/nsswitch.conf
rdfile /etc/resolv.conf
To find the “live” status of the config files - where
required to do so since hosts, hosts.equiv, nsswitch.conf, resolv.conf
are read from file anyway - we run:
*Note this this
applies to only a basic setup.
For /etc/rc and
/etc/dgateways:
hostname
ifconfig -a
route -s
routed status
options dns.enable
options nis.enable
For /etc/exports
config run:
exportfs -a -v
Note: There is a HA Config Checker, my
understanding is that this is essentially a tool to verify you can takeover and
giveback successfully, not the same as the above but … (apologies my research
is a bit lacking here - time permitting I’ll look into this further - if you
know the answer I’d be most grateful for a comment.)
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