Red Hat NETWORK 3.7 -, Справочное руководство

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Appendix C. Probes 163
Field Value
Username
Password
MySQL Port*
3306
Timeout 15
Critical Maximum Threads Running
Warning Maximum Threads Running
Warning Minimum Threads Running
Critical Minimum Threads Running
Table C-36. MySQL::Threads Running settings
C.8. Network Services
The probes in this section monitor various services integral to a functioning network. When applying
them, ensure their timed thresholds do not exceed the amount of time allotted to the timeout period.
Otherwise, an UNKNOWN status will be returned in all instances of extended latency, thereby nulli-
fying the thresholds.
C.8.1. Network Services::DNS Lookup
The Network Services::DNS Lookup probe uses the
dig
command to see if it can resolve the system
or domain name specified in the
Host or Address to look up
field. It collects the following metric:
•
Query Time — The time in milliseconds required to execute the
dig
request.
This is useful in monitoring the status of your DNS servers. If you want to monitor one of your DNS
servers, supply a well-known host/domain name, such as a large search engine or corporate Web site.
Field Value
Host or Address to look up
Timeout*
10
Critical Maximum Query Time
Warning Maximum Query Time
Table C-37. Network Services::DNS Lookup settings
C.8.2. Network Services::FTP
The Network Services::FTP probe uses network sockets to test FTP port availability. It collects the
following metric:
•
Remote Service Latency — The time it takes in seconds for the FTP server to answer a connection
request.