diff options
Diffstat (limited to 'conf.d/health.d/web_log.conf')
| -rw-r--r-- | conf.d/health.d/web_log.conf | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/conf.d/health.d/web_log.conf b/conf.d/health.d/web_log.conf new file mode 100644 index 000000000..c668959f5 --- /dev/null +++ b/conf.d/health.d/web_log.conf @@ -0,0 +1,161 @@ + +# make sure we can collect web log data + +template: last_collected_secs + on: web_log.response_codes +families: * + calc: $now - $last_collected_t + units: seconds ago + every: 10s + warn: $this > (($status >= $WARNING) ? ($update_every) : ( 5 * $update_every)) + crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every)) + delay: down 5m multiplier 1.5 max 1h + info: number of seconds since the last successful data collection + to: webmaster + + +# ----------------------------------------------------------------------------- +# high level response code alarms + +# the following alarms trigger only when there are enough data. +# we assume there are enough data when: +# +# $1m_requests > 120 +# +# i.e. when there are at least 120 requests during the last minute + +template: 1m_requests + on: web_log.response_statuses +families: * + lookup: sum -1m unaligned + calc: ($this == 0)?(1):($this) + units: requests + every: 10s + info: the sum of all HTTP requests over the last minute + +template: 1m_successful + on: web_log.response_statuses +families: * + lookup: sum -1m unaligned of successful_requests + calc: $this * 100 / $1m_requests + units: % + every: 10s + warn: ($1m_requests > 120) ? ($this < (($status >= $WARNING ) ? ( 95 ) : ( 85 )) ) : ( 0 ) + crit: ($1m_requests > 120) ? ($this < (($status == $CRITICAL) ? ( 85 ) : ( 75 )) ) : ( 0 ) + delay: up 2m down 15m multiplier 1.5 max 1h + info: the ratio of successful HTTP responses (1xx, 2xx, 304) over the last minute + to: webmaster + +template: 1m_redirects + on: web_log.response_statuses +families: * + lookup: sum -1m unaligned of redirects + calc: $this * 100 / $1m_requests + units: % + every: 10s + warn: ($1m_requests > 120) ? ($this > (($status >= $WARNING ) ? ( 1 ) : ( 20 )) ) : ( 0 ) + crit: ($1m_requests > 120) ? ($this > (($status == $CRITICAL) ? ( 20 ) : ( 30 )) ) : ( 0 ) + delay: up 2m down 15m multiplier 1.5 max 1h + info: the ratio of HTTP redirects (3xx except 304) over the last minute + to: webmaster + +template: 1m_bad_requests + on: web_log.response_statuses +families: * + lookup: sum -1m unaligned of bad_requests + calc: $this * 100 / $1m_requests + units: % + every: 10s + warn: ($1m_requests > 120) ? ($this > (($status >= $WARNING) ? ( 10 ) : ( 30 )) ) : ( 0 ) + crit: ($1m_requests > 120) ? ($this > (($status == $CRITICAL) ? ( 30 ) : ( 50 )) ) : ( 0 ) + delay: up 2m down 15m multiplier 1.5 max 1h + info: the ratio of HTTP bad requests (4xx) over the last minute + to: webmaster + +template: 1m_internal_errors + on: web_log.response_statuses +families: * + lookup: sum -1m unaligned of server_errors + calc: $this * 100 / $1m_requests + units: % + every: 10s + warn: ($1m_requests > 120) ? ($this > (($status >= $WARNING) ? ( 1 ) : ( 2 )) ) : ( 0 ) + crit: ($1m_requests > 120) ? ($this > (($status == $CRITICAL) ? ( 2 ) : ( 5 )) ) : ( 0 ) + delay: up 2m down 15m multiplier 1.5 max 1h + info: the ratio of HTTP internal server errors (5xx), over the last minute + to: webmaster + + +# ----------------------------------------------------------------------------- +# web slow + +# the following alarms trigger only when there are enough data. +# we assume there are enough data when: +# +# $1m_requests > 120 +# +# i.e. when there are at least 120 requests during the last minute + +template: 10m_response_time + on: web_log.response_time +families: * + lookup: average -10m unaligned of avg + units: ms + every: 30s + info: the average time to respond to HTTP requests, over the last 10 minutes + +template: web_slow + on: web_log.response_time +families: * + lookup: average -1m unaligned of avg + units: ms + every: 10s + green: 500 + red: 1000 + warn: ($1m_requests > 120) ? ($this > $green && $this > ($10m_response_time * 2) ) : ( 0 ) + crit: ($1m_requests > 120) ? ($this > $red && $this > ($10m_response_time * 4) ) : ( 0 ) + delay: down 15m multiplier 1.5 max 1h + info: the average time to respond to HTTP requests, over the last 1 minute + to: webmaster + +# ----------------------------------------------------------------------------- +# web too many or too few requests + +# the following alarms trigger only when there are enough data. +# we assume there are enough data when: +# +# $5m_successful_old > 120 +# +# i.e. when there were at least 120 requests during the 5 minutes starting +# at -10m and ending at -5m + +template: 5m_successful_old + on: web_log.response_statuses +families: * + lookup: average -5m at -5m unaligned of successful_requests + units: requests/s + every: 30s + info: average rate of successful HTTP requests over the last 5 minutes + +template: 5m_successful + on: web_log.response_statuses +families: * + lookup: average -5m unaligned of successful_requests + units: requests/s + every: 30s + info: average successful HTTP requests over the last 5 minutes + +template: 5m_requests_ratio + on: web_log.response_codes +families: * + calc: ($5m_successful_old > 0)?($5m_successful * 100 / $5m_successful_old):(100) + units: % + every: 30s + warn: ($5m_successful_old > 120) ? ($this > 200 OR $this < 50) : (0) + crit: ($5m_successful_old > 120) ? ($this > 400 OR $this < 25) : (0) + delay: down 15m multiplier 1.5 max 1h +options: no-clear-notification + info: the percentage of successful web requests over the last 5 minutes, \ + compared with the previous 5 minutes + to: webmaster + |