Download NSClient++ 0.11.6.0

What's Changed
Adds new check_nsclientclient. Which is a stand-alone application you can use to connect to and interact with NSClient.
This new client can run:
- Run queries/checks
- Change configuration
- Show logs
- Load/unload modules
It also have an interactive client you can use which is aimed as a replacement for "test mode".
To connect to NSClient you need to have the web server enabled and then you can login with the same username and password as you use in the web-ui:
$ check_nsclient nsclient auth login --password PASSWORD --ca %LOCALAPPDATA%\mkcert\rootCA.pem
Successfully logged in
Credentials are securely stored in store in credential manager.
The reason there is a nsclient command line option is that soon this will also support NRPE and other protocols as well becoming a universal monitoring tool.
After this you can show logs:
$ check_nsclient nsclient logs list
╭───────┬──────────────────────┬─────────────────────────────────────────────────────────────────╮
│ level │ date │ message │
├───────┼──────────────────────┼─────────────────────────────────────────────────────────────────┤
│ debug │ 2026-Jan-11 12:36:26 │ NSClient++ 0.4.0 2026-01-11 x64 booting... │
│ debug │ 2026-Jan-11 12:36:26 │ Booted settings subsystem... │
│ debug │ 2026-Jan-11 12:36:26 │ Archiving crash dumps in: C:\src\build\nscp/crash-dumps │
│ debug │ 2026-Jan-11 12:36:26 │ Found: CheckExternalScripts │
│ debug │ 2026-Jan-11 12:36:26 │ Found: CheckSystem │
│ debug │ 2026-Jan-11 12:36:26 │ Found: Checkhelpers │
│ debug │ 2026-Jan-11 12:36:26 │ Found: LuaScript │
│ debug │ 2026-Jan-11 12:36:26 │ Found: NRPEServer │
│ debug │ 2026-Jan-11 12:36:26 │ Found: WEBServer │
╰───────┴──────────────────────┴─────────────────────────────────────────────────────────────────╯
Or to load and enable a module you can:
$ check_nsclient nsclient modules use CheckHelpers
Successfully loaded and enable module CheckHelpers
Or you can execute queries:
$ check_nsclient nsclient queries execute-nagios check_cpu
OK: CPU load is ok.|'total 5m'=10%;80;90 'total 1m'=10%;80;90 'total 5s'=7%;80;90
As well as launch the new interactive client:
check_nsclient nsclient client
The client is included in the installer or it can be downloaded separately below as check_nsclient
One benefit of this client is that it can output everything as text, json, yaml or csv making it easy too integrate in any system:
$ check_nsclient --output json nsclient queries execute check_cpu
{
"command": "check_cpu",
"lines": [
{
"message": "OK: CPU load is ok.",
"perf": {
"total 1m": {
"value": 12.0,
"unit": "%",
"warning": 80.0,
"critical": 90.0,
},
"total 5s": {
"value": 21.0,
"unit": "%",
"warning": 80.0,
"critical": 90.0,
},
"total 5m": {
"value": 11.0,
"unit": "%",
"warning": 80.0,
"critical": 90.0,
}
}
}
],
"result": 0
}
Other changes in this version:
- Tokens for the WEB UI now expire after 8 hours.
- Some missing python scripts have been added to the installer
Full Changelog: https://github.com/mickem/nscp/compare/0.11.5...0.11.6