It can happen that a DataONTAP service stops working because a limited demo license was installed which is no longer valid. 
Our new check **check_netapp_license **regularly verifies the filers. If a license is found that expires in 30, respectively 7 days, the check sends an alert. The thresholds can be configured using the ‑‑warning|‑w and ‑‑critical|‑c parameters. Examples:```
$ ./check_netapp_license.pl -H sim821
2 license(s) ok.
SnapMirror License never expires
SnapVault License never expires
$ ./check_netapp_license.pl -H sim83n1 1 license(s) ok. Cluster Base License never expires
$ ./check_netapp_license.pl -H sim821a -w 20 -c 7 2 license(s) ok. SnapMirror License already expired SnapVault License expires in 10 day(s)
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