Hi,

we are using following expression for node memory alert. 

node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes * 100 < 10

we are getting alert when we have less than 10% memory available. But when 
the value changes in next evaluation cycle which is still less than 10%, it 
is resolving previous alert and firing fresh alert instead of following 
repeat inverval.
Configuration details: 
For condition in alert rule: 1min
group_wait: 30s, group_interval: 5m, repeat_interval: 24h

Example:  
8:00AM memory available is 9.5% alert1 triggered
8:05 AM memory available is 9.8% instead of following repeat cycle it is 
resolving alert1 and firing fresh alert.

Thanks


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