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fix:etcd-mixin:use-predictLinear-insteadof-increase

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Signed-off-by: Mustafa Elbehery <melbeher@redhat.com>
This commit is contained in:
Mustafa Elbehery 2022-07-07 15:53:15 +02:00
parent 248f072370
commit 91f8eb1bd6
2 changed files with 7 additions and 11 deletions
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4
contrib/mixin/mixin.libsonnet
View File

@ -227,14 +227,14 @@
{
alert: 'etcdExcessiveDatabaseGrowth',
expr: |||
increase(((etcd_mvcc_db_total_size_in_bytes/etcd_server_quota_backend_bytes)*100)[240m:1m]) > 50
predict_linear(etcd_mvcc_db_total_size_in_bytes[4h], 4*60*60) > etcd_server_quota_backend_bytes
||| % $._config,
'for': '10m',
labels: {
severity: 'warning',
},
annotations: {
description: 'etcd cluster "{{ $labels.%s }}": Observed surge in etcd writes leading to 50%% increase in database size over the past four hours on etcd instance {{ $labels.instance }}, please check as it might be disruptive.' % $._config.clusterLabel,
description: 'etcd cluster "{{ $labels.%s }}": Predicting running out of disk space in the next four hours, based on write observations within the past four hours on etcd instance {{ $labels.instance }}, please check as it might be disruptive.' % $._config.clusterLabel,
summary: 'etcd cluster database growing very fast.',
},
},

14
contrib/mixin/test.yaml
View File

@ -121,17 +121,13 @@ tests:
- interval: 1m
input_series:
- series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.0"}'
values: '0 1 2 0 0 1 0 3 0 0 0 0 0 0 0 0'
values: '0+8192x240'
- series: 'etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.0"}'
values: '1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1'
values: '524288+0x240'
- series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.1"}'
values: '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
values: '0+1024x240'
- series: 'etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.1"}'
values: '1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1'
- series: 'etcd_mvcc_db_total_size_in_bytes{job="etcd",instance="10.10.10.2"}'
values: '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
- series: 'etcd_server_quota_backend_bytes{job="etcd",instance="10.10.10.2"}'
values: '1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1'
values: '524288+0x240'
alert_rule_test:
- eval_time: 11m
alertname: etcdExcessiveDatabaseGrowth
@ -141,5 +137,5 @@ tests:
job: etcd
severity: warning
exp_annotations:
description: 'etcd cluster "etcd": Observed surge in etcd writes leading to 50% increase in database size over the past four hours on etcd instance 10.10.10.0, please check as it might be disruptive.'
description: 'etcd cluster "etcd": Predicting running out of disk space in the next four hours, based on write observations within the past four hours on etcd instance 10.10.10.0, please check as it might be disruptive.'
summary: 'etcd cluster database growing very fast.'