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Currently istio metrics citadel_server_cert_chain_expiry_timestamp reports The unix timestamp, in seconds, when Citadel cert chain will expire. A negative time indicates the cert is expired..
It is not possible in datadog to create alert for cert expiration is due in x days, as to get time left we need to subtract current time from metrics value. ( not supported functionality in datadog)
same case is for citadel_server_root_cert_expiry_timestamp metrics
Describe alternatives you've considered
we can add additional metrics citadel_server_cert_chain_expiry_time_left that report time in seconds left for expiration of certificate along with current metrics .
(This is used to request new product features, please visit https://github.com/istio/istio/discussions for questions on using Istio)
Describe the feature request
Currently istio metrics
citadel_server_cert_chain_expiry_timestamp
reportsThe unix timestamp, in seconds, when Citadel cert chain will expire. A negative time indicates the cert is expired.
.It is not possible in datadog to create alert for cert expiration is due in x days, as to get time left we need to subtract current time from metrics value. ( not supported functionality in datadog)
https://istio.io/latest/docs/reference/commands/pilot-discovery/#metrics
same case is for
citadel_server_root_cert_expiry_timestamp
metricsDescribe alternatives you've considered
we can add additional metrics
citadel_server_cert_chain_expiry_time_left
that report time in seconds left for expiration of certificate along with current metrics .istio/security/pkg/server/ca/server.go
Line 166 in 3727b57
same case is for
citadel_server_root_cert_expiry_time_left
metrics.Affected product area (please put an X in all that apply)
[ ] Ambient
[ ] Docs
[ ] Dual Stack
[ ] Installation
[ ] Networking
[ ] Performance and Scalability
[*] Extensions and Telemetry
[ ] Security
[ ] Test and Release
[ ] User Experience
[ ] Developer Infrastructure
Affected features (please put an X in all that apply)
[ ] Multi Cluster
[ ] Virtual Machine
[ ] Multi Control Plane
Additional context
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