squid

alert: SquidHighPercentageOfHTTPServerRequestErrors
annotations:
  description: |
    The percentage of HTTP server request errors is {{ printf "%.0f" $value }} over the last 5m on {{ $labels.instance }} which is above the threshold of 5.
  summary: There are a high number of HTTP server errors.
expr: |
  rate(squid_server_http_errors_total[5m]) / clamp_min(rate(squid_server_http_requests_total[5m]),1) * 100 > 5
for: 5m
labels:
  severity: critical

alert: SquidHighPercentageOfFTPServerRequestErrors
annotations:
  description: |
    The percentage of FTP server request errors is {{ printf "%.0f" $value }} over the last 5m on {{ $labels.instance }} which is above the threshold of 5.
  summary: There are a high number of FTP server request errors.
expr: |
  rate(squid_server_ftp_errors_total[5m]) / clamp_min(rate(squid_server_ftp_requests_total[5m]),1) * 100 > 5
for: 5m
labels:
  severity: critical

alert: SquidHighPercentageOfOtherServerRequestErrors
annotations:
  description: |
    The percentage of other server request errors is {{ printf "%.0f" $value }} over the last 5m on {{ $labels.instance }} which is above the threshold of 5.
  summary: There are a high number of other server request errors.
expr: |
  rate(squid_server_other_errors_total[5m]) / clamp_min(rate(squid_server_other_requests_total[5m]),1) * 100 > 5
for: 5m
labels:
  severity: critical

alert: SquidHighPercentageOfClientRequestErrors
annotations:
  description: |
    The percentage of HTTP client request errors is {{ printf "%.0f" $value }} over the last 5m on {{ $labels.instance }} which is above the threshold of 5.
  summary: There are a high number of HTTP client request errors.
expr: |
  rate(squid_client_http_errors_total[5m]) / clamp_min(rate(squid_client_http_requests_total[5m]),1) * 100 > 5
for: 5m
labels:
  severity: critical

alert: SquidLowCacheHitRatio
annotations:
  description: |
    The cache hit ratio is {{ printf "%.0f" $value }} over the last 10m on {{ $labels.instance }} which is below the threshold of 85.
  summary: The cache hit ratio has fallen below the configured threshold (%).
expr: |
  rate(squid_client_http_hits_total[10m]) / clamp_min(rate(squid_client_http_requests_total[10m]),1) * 100 < 85
for: 10m
labels:
  severity: warning