Monitoring a drive on Windows is pretty easy, as a drive usually has a drive-letter assigned (for example C:).
Here I'm using NSClient++ running as agent on the Windows host while on the monitoring server I use check_nt to query the agent:
nagios@monitoring:~# /usr/lib/nagios/plugins/check_nt -H sqldevserver -p 1248 -v USEDDISKSPACE -l "D" -w 100G -c 99
D:\ - total: 99.87 Gb - used: 10.93 Gb (11%) - free 88.94 Gb (89%) | 'D:\ Used Space'=10.93Gb;99.87;98.87;0.00;99.87
But what about drives that appear in the disk management but are not assigned with a drive letter but are rather mounted as a folder?
In this example we have the classical C: drive for the Windows OS and an additional D: as data partition. But as you can see in the Disk Management UI, Disk 2 (named SQL_Data_DEV001) and Disk 3 (named SQL_Log_DEV001) have no drive letter assigned.
Instead they're mounted as a subfolder inside D:
- Drive 2 is mounted on D:\SQL_Data
- Drive 3 is mounted on D:\SQL_Log
Unfortunately when using NSClient, check_nt and the USEDDISKSPACE variable, this won't work out because a drive letter is a must. From the check_nt manpage:
Size and percentage of disk use.
Request a -l parameter containing the drive letter only.
But NSClient++ also speaks NRPE and its internal checks are even newer. To check a drive with NSClient as agent and check_nrpe from the monitoring server:
nagios@monitoring:~# /usr/lib/nagios/plugins/check_nrpe -H sqldevserver -c check_drivesize -a "drive=D:"
OK All 1 drive(s) are ok|'D: used'=10.94061GB;79.89838;89.88568;0;99.87298 'D: used %'=10%;79;89;0;100
And here comes the good news: The NRPE command check_drivesize (internally configured within the NSClient agent, no need to define this command somewhere) also allows mounted volumes. From the NSClient++ documentation:
To check the size of a mounted volume (c:\volume_test)[...]
According to the documentation, only the mount-path is needed. Let's try that:
nagios@monitoring:~# /usr/lib/nagios/plugins/check_nrpe -H sqldevserver -c check_drivesize -a "drive=D:\SQL_Data"
OK All 1 drive(s) are ok|'D:\SQL_Data used'=302.15924GB;319.8976;359.8848;0;399.872 'D:\SQL_Data used %'=75%;79;89;0;100
Indeed, the returned values are different than from the D: drive!
And this is how you can monitor Windows drives/partitions without a drive-letter.
No comments yet.
AWS Android Ansible Apache Apple Atlassian Automation BSD Backup Bash Bluecoat CMS Chef Cloud Consul Container Containers CouchDB DB DNS Database Databases Docker ELK ElasticSearch Elasticsearch Filebeat FreeBSD GlusterFS Grafana Graphics HAProxy HTML Hacks Hardware Icinga Icingaweb2 InfluxDB Internet Java Kibana Kubernetes LXC Linux Logstash Mac Macintosh Mail MariaDB Minio MongoDB Monitoring Multimedia MySQL NFS Nagios Network Nginx OSSEC OTRS PGSQL PHP Perl Personal PostgreSQL Postgres PowerDNS Proxmox Proxy Rancher SSL Security Shell SmartOS Solaris Surveillance SystemD TLS Tomcat Ubuntu Unix VMware Varnish Virtualization Windows Wireless Wordpress Wyse ZFS Zoneminder