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branblac@cisco.com
Enthusiast

NSO 4.4.2 Reboot on Sync-From?

Hey team,

We are hitting a bit of a strange behavior that we have not seen before.

During the sync from of the config of a large configuration devices, the NSO will fail to complete the action and re-boot the server.

We have an NSO with roughly 1000 devices (Cisco-IOS) and after the re-boot we the have to re-sync the devices for them to be come "enabled" in NSO.

Has any NSO experts seen this issue before or have any thoughts for what the root cause might be?

Thanks,

Brandon

1 ACCEPTED SOLUTION

Accepted Solutions
alam.bilal
Cisco Employee

Hi There,

> NSO will fail to complete the action and re-boot the server.

Is it NSO restarting or the Linux Server that NSO is running on? I'm presuming the former.


Sounds like a bug. NSO shouldn't crash. Best to raise a ticket.


There are read/write/connect timeouts that can be adjusted to cater for devices with large configurations. This can be done at the device level or global level for all devices.


Also for various NEDs, under the "ned-settings", configuration that set to tweak the syncing behaviour. There are certain optimizations available which reduce the cost of check-sync/sync-from and might be relevant here.


Thanks,

Bilal.


View solution in original post

1 REPLY 1
alam.bilal
Cisco Employee

Hi There,

> NSO will fail to complete the action and re-boot the server.

Is it NSO restarting or the Linux Server that NSO is running on? I'm presuming the former.


Sounds like a bug. NSO shouldn't crash. Best to raise a ticket.


There are read/write/connect timeouts that can be adjusted to cater for devices with large configurations. This can be done at the device level or global level for all devices.


Also for various NEDs, under the "ned-settings", configuration that set to tweak the syncing behaviour. There are certain optimizations available which reduce the cost of check-sync/sync-from and might be relevant here.


Thanks,

Bilal.


View solution in original post