SAPControl Certificates Validity Monitoring

This monitor supervises certificate expiration in SAP PSE files
using SAPControl `OSExecute` and `sapgenpse`,
with threshold-based alarms per surveillance line.

What Can Be Monitored

You can detect and alert on:

Imminent expiration of the main certificate in a PSE file (`VALIDITY` check)
Imminent expiration of certificates inside a PSE PK list (`MAINTAIN_PK` check), filtered by subject pattern
Already expired certificates (negative remaining days)

This supports proactive renewal planning and reduction of certificate-related outages.

Monitored Data

The monitor collects:

Certificate expiration timestamp from `sapgenpse` command output
Remaining validity in days (`expirationDate - now`)
Subject-based expiration dates when `MAINTAIN_PK` is used

Configuration Hints

One surveillance row targets one check definition (check type + PSE file + thresholds).
`Check type = VALIDITY` checks one expiration date for the target PSE.
`Check type = MAINTAIN_PK` checks all matching certificate subjects in the PSE PK list.
`Subject` supports wildcard matching and is mainly useful with `MAINTAIN_PK`.
If `sapgenpse path` is empty, the monitor tries to auto-detect it with `which sapgenpse`.
If Detect PSE path is enabled and a PSE file is provided without absolute path, discovery is attempted automatically.
Disable alarm generation for a row with `Alarm = false`.

Configuration

Monitoring Parameters

Parameter	Type	Required	Default	Description
sapgenpse path	String	No	(auto-detected)	Absolute path (or directory) to `sapgenpse`. If empty, auto-detection is attempted.
Detect PSE path	Boolean	Yes	`false`	When enabled, attempts to discover `.pse` files and resolve non-absolute PSE file names.

Surveillance Table

Field	Required	Default	Description
Active	Yes	`true`	Enables/disables this surveillance row.
Check type	Yes	`MAINTAIN_PK`	Certificate extraction mode: `MAINTAIN_PK` (PK list entries) or `VALIDITY` (main certificate validity).
PSE files	Yes	(empty)	PSE file path or file name pattern target to inspect.
Subject	Yes	`*`	Subject selector for certificate entries (wildcard supported), mainly used with `MAINTAIN_PK`.
Max expiration days	Yes	`G2W:90 W2M:30 M2C:10`	Threshold profile applied to remaining days before expiration.
Severity	Yes	WARNING	Alarm severity applied when threshold is breached.
Auto clear	Yes	`true`	Generated alarms are clearable when condition is no longer true.
Alarm tag	No	(empty)	Optional custom alarm tag.
Alarm	No	`true`	Enables/disables alarm generation for this row.

Alarm Conditions

For each active surveillance row:

`VALIDITY`: alarm when remaining days for the PSE main certificate breach configured threshold
`MAINTAIN_PK`: alarm when remaining days for any subject matching `Subject` breach configured threshold
If remaining days are below `0`, certificate is considered expired

Generated Alarms

Alarm messages include PSE file and, for `MAINTAIN_PK`, certificate subject context, for example:

`X days to expiration for <file> (<yyyy-MM-dd>)`
`Certificate expired for <file> (<yyyy-MM-dd>)`
`X days to expiration for <subject> in <file> (<yyyy-MM-dd>)`
`Certificate expired for <subject> in <file> (<yyyy-MM-dd>)`

Example

Active	Check type	PSE files	Subject	Max expiration days	Severity	Auto clear	Alarm tag	Alarm
true	`VALIDITY`	`/usr/sap/SID/DVEBMGS00/sec/SAPSSLS.pse`	`*`	`G2W:60 W2M:30 M2C:10`	4	true	`SAPCTL,CERT`	true
true	`MAINTAIN_PK`	`SAPSSLC.pse`	`CN=.mycompany.com`	`G2W:45 W2M:20 M2C:7`	5	true	`SAPCTL,PKLIST`	true

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