mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-24 21:52:17 +00:00
c55a626217
Following metrics are now exported by the prometheus exporter to reflect recent changes on HAProxy : * haproxy_process_failed_resolutions * haproxy_process_bytes_out_total * haproxy_process_spliced_bytes_out_total * haproxy_process_bytes_out_rate and * haproxy_server_unsafe_idle_connections_current * haproxy_server_safe_idle_connections_current * haproxy_server_used_connections_current * haproxy_server_need_connections_current
322 lines
30 KiB
Plaintext
322 lines
30 KiB
Plaintext
PROMEX: A Prometheus exporter for HAProxy
|
|
-------------------------------------------
|
|
|
|
Prometheus is a monitoring and alerting system. More and more people use it to
|
|
monitor their environment (this is written February 2019). It collects metrics
|
|
from monitored targets by scraping metrics HTTP endpoints on these targets. For
|
|
HAProxy, The Prometheus team officially supports an exporter written in Go
|
|
(https://github.com/prometheus/haproxy_exporter). But it requires an extra
|
|
software to deploy and monitor. PROMEX, on its side, is a built-in Prometheus
|
|
exporter for HAProxy. It was developed as a service and is directly available in
|
|
HAProxy, like the stats applet.
|
|
|
|
However, PROMEX is not built by default with HAProxy. It is provided as an extra
|
|
component for everyone want to use it. So you need to explicitly build HAProxy
|
|
with the PROMEX service, using the Makefile variable "EXTRA_OBJS". For instance:
|
|
|
|
> make TARGET=linux-glibc EXTRA_OBJS="contrib/prometheus-exporter/service-prometheus.o"
|
|
|
|
if HAProxy provides the PROMEX service, the following build option will be
|
|
reported by the command "haproxy -vv":
|
|
|
|
Built with the Prometheus exporter as a service
|
|
|
|
To be used, it must be enabled in the configuration with an "http-request" rule
|
|
and the corresponding HTTP proxy must enable the HTX support. For instance:
|
|
|
|
frontend test
|
|
mode http
|
|
...
|
|
option http-use-htx
|
|
http-request use-service prometheus-exporter if { path /metrics }
|
|
...
|
|
|
|
|
|
This service has been developed as a third-party component because it could
|
|
become obsolete, depending on how much time Prometheus will remain heavily
|
|
used. This is said with no ulterior motive of course. Prometheus is a great
|
|
software and I hope all the well for it. But we involve in a environment moving
|
|
quickly and a solution may be obvious today could be deprecated the next
|
|
year. And because PROMEX is not integrated by default into the HAProxy codebase,
|
|
it will need some interest to be actively supported. All contribution of any
|
|
kind are welcome.
|
|
|
|
You must also be careful if you use with huge configurations. Unlike the stats
|
|
applet, all metrics are not grouped by service (proxy, listener or server). With
|
|
PROMEX, all lines for a given metric are provided as one single group. So
|
|
instead of collecting all metrics for a proxy before moving to the next one, we
|
|
must loop on all proxies for each metric. Same for the servers. Thus, it will
|
|
spend much more resources to produce the Prometheus metrics than the CSV export
|
|
through the stats page. To give a comparison order, quick benchmarks shown that
|
|
a PROMEX dump is 5x slower and 20x more verbose than a CSV export.
|
|
|
|
|
|
metrics filtering
|
|
-------------------
|
|
|
|
It is possible to dynamically select the metrics to export if you don't use all
|
|
of them passing parameters in the query-string.
|
|
|
|
* Filtering on scopes
|
|
|
|
The metrics may be filtered by scopes. Multiple parameters with "scope" as name
|
|
may be passed in the query-string to filter exported metrics, with one of those
|
|
values: global, frontend, backend, server or '*' (means all). A scope parameter
|
|
with no value means to filter out all scopes (nothing is returned). The scope
|
|
parameters are parsed in their appearance order in the query-string. So an empty
|
|
scope will reset all scopes already parsed. But it can be overridden by
|
|
following scope parameters in the query-string. By default everything is
|
|
exported. Here are examples:
|
|
|
|
/metrics?scope=server # ==> server metrics will be exported
|
|
/metrics?scope=frontend&scope=backend # ==> Frontend and backend metrics will be exported
|
|
/metrics?scope=*&scope= # ==> no metrics will be exported
|
|
/metrics?scope=&scope=global # ==> global metrics will be exported
|
|
|
|
* Filtering on servers state
|
|
|
|
It is possible to exclude from returned metrics all servers in maintenance mode
|
|
passing the parameter "no-maint" in the query-string. This parameter may help to
|
|
solve performance issues of configuration that use the server templates to
|
|
manage dynamic provisionning. Note there is no consistency check on the servers
|
|
state. So, if the state of a server changes while the exporter is running, only
|
|
a part of the metrics for this server will be dumped.
|
|
|
|
Exported metrics
|
|
------------------
|
|
|
|
* Globals metrics
|
|
|
|
+------------------------------------------------+-------------------------------------------------------------------------------+
|
|
| Metric name | Description |
|
|
+------------------------------------------------+-------------------------------------------------------------------------------+
|
|
| haproxy_process_nbthread | Configured number of threads. |
|
|
| haproxy_process_nbproc | Configured number of processes. |
|
|
| haproxy_process_relative_process_id | Relative process id, starting at 1. |
|
|
| haproxy_process_start_time_seconds | Start time in seconds. |
|
|
| haproxy_process_max_memory_bytes | Per-process memory limit (in bytes); 0=unset. |
|
|
| haproxy_process_pool_allocated_bytes | Total amount of memory allocated in pools (in bytes). |
|
|
| haproxy_process_pool_used_bytes | Total amount of memory used in pools (in bytes). |
|
|
| haproxy_process_pool_failures_total | Total number of failed pool allocations. |
|
|
| haproxy_process_max_fds | Maximum number of open file descriptors; 0=unset. |
|
|
| haproxy_process_max_sockets | Maximum number of open sockets. |
|
|
| haproxy_process_max_connections | Maximum number of concurrent connections. |
|
|
| haproxy_process_hard_max_connections | Initial Maximum number of concurrent connections. |
|
|
| haproxy_process_current_connections | Number of active sessions. |
|
|
| haproxy_process_connections_total | Total number of created sessions. |
|
|
| haproxy_process_requests_total | Total number of requests (TCP or HTTP). |
|
|
| haproxy_process_max_ssl_connections | Configured maximum number of concurrent SSL connections. |
|
|
| haproxy_process_current_ssl_connections | Number of opened SSL connections. |
|
|
| haproxy_process_ssl_connections_total | Total number of opened SSL connections. |
|
|
| haproxy_process_max_pipes | Configured maximum number of pipes. |
|
|
| haproxy_process_pipes_used_total | Number of pipes in used. |
|
|
| haproxy_process_pipes_free_total | Number of pipes unused. |
|
|
| haproxy_process_current_connection_rate | Current number of connections per second over last elapsed second. |
|
|
| haproxy_process_limit_connection_rate | Configured maximum number of connections per second. |
|
|
| haproxy_process_max_connection_rate | Maximum observed number of connections per second. |
|
|
| haproxy_process_current_session_rate | Current number of sessions per second over last elapsed second. |
|
|
| haproxy_process_limit_session_rate | Configured maximum number of sessions per second. |
|
|
| haproxy_process_max_session_rate | Maximum observed number of sessions per second. |
|
|
| haproxy_process_current_ssl_rate | Current number of SSL sessions per second over last elapsed second. |
|
|
| haproxy_process_limit_ssl_rate | Configured maximum number of SSL sessions per second. |
|
|
| haproxy_process_max_ssl_rate | Maximum observed number of SSL sessions per second. |
|
|
| haproxy_process_current_frontend_ssl_key_rate | Current frontend SSL Key computation per second over last elapsed second. |
|
|
| haproxy_process_max_frontend_ssl_key_rate | Maximum observed frontend SSL Key computation per second. |
|
|
| haproxy_process_frontend_ssl_reuse | SSL session reuse ratio (percent). |
|
|
| haproxy_process_current_backend_ssl_key_rate | Current backend SSL Key computation per second over last elapsed second. |
|
|
| haproxy_process_max_backend_ssl_key_rate | Maximum observed backend SSL Key computation per second. |
|
|
| haproxy_process_ssl_cache_lookups_total | Total number of SSL session cache lookups. |
|
|
| haproxy_process_ssl_cache_misses_total | Total number of SSL session cache misses. |
|
|
| haproxy_process_http_comp_bytes_in_total | Number of bytes per second over last elapsed second, before http compression. |
|
|
| haproxy_process_http_comp_bytes_out_total | Number of bytes per second over last elapsed second, after http compression. |
|
|
| haproxy_process_limit_http_comp | Configured maximum input compression rate in bytes. |
|
|
| haproxy_process_current_zlib_memory | Current memory used for zlib in bytes. |
|
|
| haproxy_process_max_zlib_memory | Configured maximum amount of memory for zlib in bytes. |
|
|
| haproxy_process_current_tasks | Current number of tasks. |
|
|
| haproxy_process_current_run_queue | Current number of tasks in the run-queue. |
|
|
| haproxy_process_idle_time_percent | Idle to total ratio over last sample (percent). |
|
|
| haproxy_process_stopping | Non zero means stopping in progress. |
|
|
| haproxy_process_jobs | Current number of active jobs (listeners, sessions, open devices). |
|
|
| haproxy_process_unstoppable_jobs | Current number of active jobs that can't be stopped during a soft stop. |
|
|
| haproxy_process_listeners | Current number of active listeners. |
|
|
| haproxy_process_active_peers | Current number of active peers. |
|
|
| haproxy_process_connected_peers | Current number of connected peers. |
|
|
| haproxy_process_dropped_logs_total | Total number of dropped logs. |
|
|
| haproxy_process_busy_polling_enabled | Non zero if the busy polling is enabled. |
|
|
| haproxy_process_failed_resolutions | Total number of failed DNS resolutions. |
|
|
| haproxy_process_bytes_out_total | Total number of bytes emitted. |
|
|
| haproxy_process_spliced_bytes_out_total | Total number of bytes emitted through a kernel pipe. |
|
|
| haproxy_process_bytes_out_rate | Number of bytes emitted over the last elapsed second. |
|
|
+------------------------------------------------+-------------------------------------------------------------------------------+
|
|
|
|
* Frontend metrics
|
|
|
|
+-------------------------------------------------+------------------------------------------------------------------------------+
|
|
| Metric name | Description |
|
|
+-------------------------------------------------+------------------------------------------------------------------------------+
|
|
| haproxy_frontend_status | Current status of the service. |
|
|
| haproxy_frontend_current_sessions | Current number of active sessions. |
|
|
| haproxy_frontend_max_sessions | Maximum observed number of active sessions. |
|
|
| haproxy_frontend_limit_sessions | Configured session limit. |
|
|
| haproxy_frontend_sessions_total | Total number of sessions. |
|
|
| haproxy_frontend_limit_session_rate | Configured limit on new sessions per second. |
|
|
| haproxy_frontend_max_session_rate | Maximum observed number of sessions per second. |
|
|
| haproxy_frontend_connections_rate_current | Current number of connections per second over the last elapsed second. |
|
|
| haproxy_frontend_connections_rate_max | Maximum observed number of connections per second. |
|
|
| haproxy_frontend_connections_total | Total number of connections. |
|
|
| haproxy_frontend_bytes_in_total | Current total of incoming bytes. |
|
|
| haproxy_frontend_bytes_out_total | Current total of outgoing bytes. |
|
|
| haproxy_frontend_requests_denied_total | Total number of denied requests. |
|
|
| haproxy_frontend_responses_denied_total | Total number of denied responses. |
|
|
| haproxy_frontend_request_errors_total | Total number of request errors. |
|
|
| haproxy_frontend_denied_connections_total | Total number of requests denied by "tcp-request connection" rules. |
|
|
| haproxy_frontend_denied_sessions_total | Total number of requests denied by "tcp-request session" rules. |
|
|
| haproxy_frontend_failed_header_rewriting_total | Total number of failed header rewriting warnings. |
|
|
| haproxy_frontend_http_requests_rate_max | Maximum observed number of HTTP requests per second. |
|
|
| haproxy_frontend_http_requests_total | Total number of HTTP requests received. |
|
|
| haproxy_frontend_http_responses_total | Total number of HTTP responses. |
|
|
| haproxy_frontend_intercepted_requests_total | Total number of intercepted HTTP requests. |
|
|
| haproxy_frontend_http_cache_lookups_total | Total number of HTTP cache lookups. |
|
|
| haproxy_frontend_http_cache_hits_total | Total number of HTTP cache hits. |
|
|
| haproxy_frontend_http_comp_bytes_in_total | Total number of HTTP response bytes fed to the compressor. |
|
|
| haproxy_frontend_http_comp_bytes_out_total | Total number of HTTP response bytes emitted by the compressor. |
|
|
| haproxy_frontend_http_comp_bytes_bypassed_total | Total number of bytes that bypassed the HTTP compressor (CPU/BW limit). |
|
|
| haproxy_frontend_http_comp_responses_total | Total number of HTTP responses that were compressed. |
|
|
| haproxy_frontend_internal_errors_total | Total number of internal errors. |
|
|
+-------------------------------------------------+------------------------------------------------------------------------------+
|
|
|
|
* Backend metrics
|
|
|
|
+-----------------------------------------------------+--------------------------------------------------------------------------+
|
|
| Metric name | Description |
|
|
+-----------------------------------------------------+--------------------------------------------------------------------------+
|
|
| haproxy_backend_status | Current status of the service. |
|
|
| haproxy_backend_current_sessions | Current number of active sessions. |
|
|
| haproxy_backend_max_sessions | Maximum observed number of active sessions. |
|
|
| haproxy_backend_limit_sessions | Configured session limit. |
|
|
| haproxy_backend_sessions_total | Total number of sessions. |
|
|
| haproxy_backend_max_session_rate | Maximum observed number of sessions per second. |
|
|
| haproxy_backend_last_session_seconds | Number of seconds since last session assigned to server/backend. |
|
|
| haproxy_backend_current_queue | Current number of queued requests. |
|
|
| haproxy_backend_max_queue | Maximum observed number of queued requests. |
|
|
| haproxy_backend_connection_attempts_total | Total number of connection establishment attempts. |
|
|
| haproxy_backend_connection_reuses_total | Total number of connection reuses. |
|
|
| haproxy_backend_bytes_in_total | Current total of incoming bytes. |
|
|
| haproxy_backend_bytes_out_total | Current total of outgoing bytes. |
|
|
| haproxy_backend_queue_time_average_seconds | Avg. queue time for last 1024 successful connections. |
|
|
| haproxy_backend_connect_time_average_seconds | Avg. connect time for last 1024 successful connections. |
|
|
| haproxy_backend_response_time_average_seconds | Avg. response time for last 1024 successful connections. (0 for TCP) |
|
|
| haproxy_backend_total_time_average_seconds | Avg. total time for last 1024 successful connections. |
|
|
| haproxy_backend_max_queue_time_seconds | Maximum observed queue time. |
|
|
| haproxy_backend_max_connect_time_seconds | Maximum observed connect time. |
|
|
| haproxy_backend_max_response_time_seconds | Maximum observed response time. (0 for TCP) |
|
|
| haproxy_backend_max_total_time_seconds | Maximum observed total time. |
|
|
| haproxy_backend_requests_denied_total | Total number of denied requests. |
|
|
| haproxy_backend_responses_denied_total | Total number of denied responses. |
|
|
| haproxy_backend_connection_errors_total | Total number of connection errors. |
|
|
| haproxy_backend_response_errors_total | Total number of response errors. |
|
|
| haproxy_backend_retry_warnings_total | Total number of retry warnings. |
|
|
| haproxy_backend_redispatch_warnings_total | Total number of redispatch warnings. |
|
|
| haproxy_backend_failed_header_rewriting_total | Total number of failed header rewriting warnings. |
|
|
| haproxy_backend_client_aborts_total | Total number of data transfers aborted by the client. |
|
|
| haproxy_backend_server_aborts_total | Total number of data transfers aborted by the server. |
|
|
| haproxy_backend_weight | Service weight. |
|
|
| haproxy_backend_active_servers | Current number of active servers. |
|
|
| haproxy_backend_backup_servers | Current number of backup servers. |
|
|
| haproxy_backend_check_up_down_total | Total number of UP->DOWN transitions. |
|
|
| haproxy_backend_check_last_change_seconds | Number of seconds since the last UP<->DOWN transition. |
|
|
| haproxy_backend_downtime_seconds_total | Total downtime (in seconds) for the service. |
|
|
| haproxy_backend_loadbalanced_total | Total number of times a service was selected. |
|
|
| haproxy_backend_http_requests_total | Total number of HTTP requests received. |
|
|
| haproxy_backend_http_responses_total | Total number of HTTP responses. |
|
|
| haproxy_backend_http_cache_lookups_total | Total number of HTTP cache lookups. |
|
|
| haproxy_backend_http_cache_hits_total | Total number of HTTP cache hits. |
|
|
| haproxy_backend_http_comp_bytes_in_total | Total number of HTTP response bytes fed to the compressor. |
|
|
| haproxy_backend_http_comp_bytes_out_total | Total number of HTTP response bytes emitted by the compressor. |
|
|
| haproxy_backend_http_comp_bytes_bypassed_total | Total number of bytes that bypassed the HTTP compressor (CPU/BW limit). |
|
|
| haproxy_backend_http_comp_responses_total | Total number of HTTP responses that were compressed. |
|
|
| haproxy_backend_internal_errors_total | Total number of internal errors. |
|
|
+-----------------------------------------------------+--------------------------------------------------------------------------+
|
|
|
|
* Server metrics
|
|
|
|
+----------------------------------------------------+---------------------------------------------------------------------------+
|
|
| Metric name | Description |
|
|
+----------------------------------------------------+---------------------------------------------------------------------------+
|
|
| haproxy_server_status | Current status of the service. |
|
|
| haproxy_server_current_sessions | Current number of active sessions. |
|
|
| haproxy_server_max_sessions | Maximum observed number of active sessions. |
|
|
| haproxy_server_limit_sessions | Configured session limit. |
|
|
| haproxy_server_sessions_total | Total number of sessions. |
|
|
| haproxy_server_max_session_rate | Maximum observed number of sessions per second. |
|
|
| haproxy_server_last_session_seconds | Number of seconds since last session assigned to server/backend. |
|
|
| haproxy_server_current_queue | Current number of queued requests. |
|
|
| haproxy_server_max_queue | Maximum observed number of queued requests. |
|
|
| haproxy_server_queue_limit | Configured maxqueue for the server (0 meaning no limit). |
|
|
| haproxy_server_bytes_in_total | Current total of incoming bytes. |
|
|
| haproxy_server_bytes_out_total | Current total of outgoing bytes. |
|
|
| haproxy_server_queue_time_average_seconds | Avg. queue time for last 1024 successful connections. |
|
|
| haproxy_server_connect_time_average_seconds | Avg. connect time for last 1024 successful connections. |
|
|
| haproxy_server_response_time_average_seconds | Avg. response time for last 1024 successful connections. (0 for TCP) |
|
|
| haproxy_server_total_time_average_seconds | Avg. total time for last 1024 successful connections. |
|
|
| haproxy_server_max_queue_time_seconds | Maximum observed queue time. |
|
|
| haproxy_server_max_connect_time_seconds | Maximum observed connect time. |
|
|
| haproxy_server_max_response_time_seconds | Maximum observed response time. (0 for TCP) |
|
|
| haproxy_server_max_total_time_seconds | Maximum observed total time. |
|
|
| haproxy_server_connection_attempts_total | Total number of connection establishment attempts. |
|
|
| haproxy_server_connection_reuses_total | Total number of connection reuses. |
|
|
| haproxy_server_responses_denied_total | Total number of denied responses. |
|
|
| haproxy_server_connection_errors_total | Total number of connection errors. |
|
|
| haproxy_server_response_errors_total | Total number of response errors. |
|
|
| haproxy_server_retry_warnings_total | Total number of retry warnings. |
|
|
| haproxy_server_redispatch_warnings_total | Total number of redispatch warnings. |
|
|
| haproxy_server_failed_header_rewriting_total | Total number of failed header rewriting warnings. |
|
|
| haproxy_server_client_aborts_total | Total number of data transfers aborted by the client. |
|
|
| haproxy_server_server_aborts_total | Total number of data transfers aborted by the server. |
|
|
| haproxy_server_weight | Service weight. |
|
|
| haproxy_server_check_status | Status of last health check, if enabled. (see below for the mapping) |
|
|
| haproxy_server_check_code | layer5-7 code, if available of the last health check. |
|
|
| haproxy_server_check_duration_seconds | Total duration of the latest server health check, in seconds. |
|
|
| haproxy_server_check_failures_total | Total number of failed check (Only when the server is up). |
|
|
| haproxy_server_check_up_down_total | Total number of UP->DOWN transitions. |
|
|
| haproxy_server_downtime_seconds_total | Total downtime (in seconds) for the service. |
|
|
| haproxy_server_check_last_change_seconds | Number of seconds since the last UP<->DOWN transition. |
|
|
| haproxy_server_current_throttle | Current throttle percentage for the server, when slowstart is active. |
|
|
| haproxy_server_loadbalanced_total | Total number of times a service was selected. |
|
|
| haproxy_server_http_responses_total | Total number of HTTP responses. |
|
|
| haproxy_server_idle_connections_current | Current number of idle connections available for reuse. |
|
|
| haproxy_server_idle_connections_limit | Limit on the number of available idle connections. |
|
|
| haproxy_server_internal_errors_total | Total number of internal errors. |
|
|
| haproxy_server_unsafe_idle_connections_current | Current number of unsafe idle connections. |
|
|
| haproxy_server_safe_idle_connections_current | Current number of safe idle connections. |
|
|
| haproxy_server_used_connections_current | Current number of connections in use. |
|
|
| haproxy_server_need_connections_current | Estimated needed number of connections. |
|
|
+----------------------------------------------------+---------------------------------------------------------------------------+
|
|
|
|
Mapping of health check status :
|
|
|
|
0 : HCHK_STATUS_UNKNOWN (Unknown)
|
|
1 : HCHK_STATUS_INI (Initializing)
|
|
|
|
4 : HCHK_STATUS_HANA (Health analyze detected enough consecutive errors)
|
|
|
|
5 : HCHK_STATUS_SOCKERR (Socket error)
|
|
|
|
6 : HCHK_STATUS_L4OK (L4 check passed, for example tcp connect)
|
|
7 : HCHK_STATUS_L4TOUT (L4 timeout)
|
|
8 : HCHK_STATUS_L4CON (L4 connection problem)
|
|
|
|
9 : HCHK_STATUS_L6OK (L6 check passed)
|
|
10 : HCHK_STATUS_L6TOUT (L6 (SSL) timeout)
|
|
11 : HCHK_STATUS_L6RSP (L6 invalid response - protocol error)
|
|
|
|
12 : HCHK_STATUS_L7TOUT (L7 (HTTP/SMTP) timeout)
|
|
13 : HCHK_STATUS_L7RSP (L7 invalid response - protocol error)
|
|
15 : HCHK_STATUS_L7OKD (L7 check passed)
|
|
16 : HCHK_STATUS_L7OKCD (L7 check conditionally passed)
|
|
17 : HCHK_STATUS_L7STS (L7 response error, for example HTTP 5xx)
|
|
|
|
18 : HCHK_STATUS_PROCERR (External process check failure)
|
|
19 : HCHK_STATUS_PROCTOUT (External process check timeout)
|
|
20 : HCHK_STATUS_PROCOK (External process check passed)
|