Haproxy default log format But when %t is the time the TCP connection was accepted, in the default format. hdr(user-agent)]\ %{+Q}CC\ %Tq\ %{+Q}s\ NGINX-CACHE-\ “-” capture request header Referer len 100 capture request header User-Agent len 100 I’m expecting for getting at logs HTTP geaders of referer and user-agent, but I’m getting this part I was wondering if it is possible to have a specific log format for a specific logger If I add to a backend log /dev/log local1 I am still receiving logs on the default logger configured in global “log /dev/log local0”, which is nice. I am trying to debug my HAProxy config, and need to know what the resulting outgoing requests are, particularly the host and path. Also there was no logging regarding the same in /var/log/syslog file. By default, it does not create a log file Linux, you have to configure the Haproxy Hello all, I have the following situation: We are running a haproxy 1. 1 len 65335 local0. For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. It may be one of the following : local Analog to rfc3164 syslog message format except that hostname field is stripped. ssl. 3, and it’s running in K8S environment. lua; If a frontend or backend does not indicate a named defaults section using the from keyword, it takes the default values specified in the nearest preceding defaults section. pem default_backend backendbla For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. I would like to have haproxy log access using the same format as most webservers default, CLF or also known as NCSA Common log format. 5. Where possible, specify a unique name for each defaults section and use the Sorted by: Reset to default 1 I'm new to HAproxy. In my log format I use %[capture. log # #log 127. These four sections define how the server as a whole performs, what your default The default haproxy. To check SELinux’s current policy, run the following: Custom log format. log And you can view the “notice” level It can be used to override the default log format without having to copy the whole original definition. log # file. All running fine. I am new to ha-proxy and trying to push the logs to elastic search using filebeat. I have done it like this: on backend part, I have set varible txn. This patch re-introduce a legacy "local" format which is analog to rfc3164 but with the default log format is giving you more information that you need. 19. HAProxy derives the logging format from settings within the HAProxy configuration file. HAProxy version 3. But now I would like to change the logging format of /dev/log local1. 1 local6 notice chroot /var/lib/haproxy stats timeout 30s user haproxy group haproxy daemon defaults log global mode tcp option tcplog option logasap timeout connect 5000 timeout client 50000 timeout server 50000 resolvers private_dns nameserver dns-0 172. In this mode, a full-duplex connection is established between clients and servers, and no layer 7 examination will be performed. Ask Question Asked 12 years, 9 months ago. log for errors using a tool I’m trying to use this type of log format: log-format %H\ %ci\ -\ [%t]\ %{+Q}r\ %ST\ -\ %U\ {+Q}[req. 56. The haproxy version is 2. log, follow this quickstart tutorial, How To Configure HAProxy Logging with Rsyslog on CentOS 8. conf) on the defaults section of your config. 6. Some of those are working in TCP mode, most of them in HTTP mode. Note: option " This setting allows to configure the way HAProxy does the lookup for the extra SSL files. 70. 3 "HTTP log format". They are global, defaults, frontend, and backend. This directive specifies the log format string that will be used for all logs resulting from traffic passing through It can be used to override the default log format without having to copy the whole original definition. The standard way of using it is to send logs over UDP to the log server (by default on port 514). 5 bookworm haproxy. 0-1~bpo12+1 2024/06/01 rsyslogd 8. body id 0. As filebeat only takes json format and I am not getting a way to configure ha-proxy to output the logs in json for For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. However, before restarting Rsyslog you will need to determine if SELinux is enforcing access control on your CentOS 8 system. 4 Customize the tcp, http or https log format using log format variables. By default, haproxy tries to spread the start of health checks across the smallest health check interval of all the servers in a farm. This is sort of a grep-like utility designed to process HAProxy log files at a very fast data rate. frontend http-in mode http option httplog log global default_backend bck backend static server srv1 127. Would be great to have a log-format flag %{+J} to escape JSON characters from a given string. If An HAProxy configuration file guides the behavior of your HAProxy load balancer. hdr(0)]\ %hr\ %hrl\ %hs\ %hsl default_backend backend_api redirect scheme https code 301 if !{ ssl_fc } backend backend_api mode http By default HAproxy logging is disabled How to debug logs when one of the routes is not working as expected How capture and save HAproxy logs Skip to navigation Skip to main content Utilities Subscriptions tee -a router-default. The person asking in the above link had the following front-end in their config: HAProxy Log Format. r),regsub()], but it doesn’t work. I have an HAProxy configuration with a custom JSON log-format. This is The default config write the logs into /var/log/haproxy. HAProxy comes with a few standard log formats that define which fields will be captured. When you are troubleshooting HAProxy using its log file, examine /var/log/haproxy. 1. It is not possible to specify a capture in a "defaults" section. As Default Log line length is 1024, So to log full request need to specify max length; log 127. Does anyone have documentation for doing this? Skip to main content. But when A line like the following can be added to # /etc/sysconfig/syslog # # local2. To log HAProxy output logs to /var/log/haproxy. In Frontend need to add below two lines; declare capture request line 400000. See also --tcp-services-configmap command-line option. req. global log 127. How do I log outgoing requests so that I can debug HAProxy? Your Feature Request. I tried %[var(req. It may be one of the following : rfc3164 The RFC3164 syslog message format. Defaults to HAProxy default TCP log format. Change of default log format. * /var/log/haproxy. log The log file can be attached to the support request if required. 3 version of haproxy. This behavior change was due to log/sink re-work, because according to rfc3164 the hostname field is mandatory. On Docker, it is sent to stdout. Values. By default HAProxy adds a new extension to In order to scale with the number of available processors, by default haproxy will start one worker thread per processor it is allowed to run on. You can make it more verbose by setting the level from "info" to "debug": log stdout format raw local0 debug It looks like health checks are failing. https-log-format: log format of TCP proxy used to inspect SNI extention. None of this is necessary, you don’t even need a new frontend: Just add a new bind line for ssl: frontend blabla bind :80 + bind :443 ssl crt /path/to/certificate. Viewed 7k times 1 with this example in my configuration. _tcp. * HAPROXY_HTTP_CLF_LOG_FMT: contains the value of the default HTTP CLF log format as defined in section 8. 6 logs? By default it appears as 17/May/2023:09:17:11. Setting a specific log format did not help. . I want to capture a specific response header and log it. Modified 12 years, 9 months ago. user) http_auth_group(myuserlist) To sum up, you can't log to files to haproxy, you can only log to I have a strange status code in my log file of haproxy (Note that its not a customized log-format its the default one in log-http) 43. Unless explicitly configured differently, the incoming traffic is spread over all these threads, all running the same event loop. Relying on section ordering in this manner is not recommended, however, because it can lead to ambiguity and slow troubleshooting. Location of HTTP log format for Haproxy. Learn more about bidirectional Unicode characters. This is the default. res. Based on the template case and the date2str_log implementation, it looks like the format is hard-coded. log-format “${HAPROXY_HTTP_LOG_FMT} limit:%{+Q}[var(txn. d directory then Custom log-format option can be set per frontend basis, but acceptable format variables depends on mode. There are four essential sections to an HAProxy configuration file. 1 local6 log 127. So, this will log the full default log line in the message field, and then re-log each field in its own JSON field. 77. HAProxy has lots of Hello Is it possible to process logs Haproxy with 2 different formats? For example Standard log (default) to haproxy. For some use cases, we want to output logs lines in a JSON format. By default haproxy processes tasks from several classes one class at a time as this is the most efficient. If you only have mode tcp or mode http on your haproxy setup, use the proper file ( mode-http. Same thing is available in GMT (%T) and local time (%Tl). Typical figures range It can be used to override the default log format without having to copy the whole original definition. 1 local0 debug defaults log global stats enable option httplog frontend httpFrontendi mode http bind *:80 http-request add-header Foo Bar capture request header Foo len 64 log-format Foo\ %[capture. log. I understand the format of normal request based logging as detailed in section 8 of the config documentation. you need to structure the fields in a way that an external tool can read them. http-keep-alive default - Enables HTTP Keep-Alive both from the client to HAProxy and from HAProxy to the backend. ; http-server-close - Disables HTTP Keep-Alive between HAProxy and the backend, while allowing it to stay enabled from the client to HAProxy. log file: [WARNING] 244/190008 (3040) : config : log format ignored for frontend 'http-in' since it has no log address. On CentOS, Fedora, and other RedHat-derived Linux distributions, haproxy does not output to a log file by default. 749] front-http mybackend Skip to main content To log cookies you'll need to capture as you note, where name is the name of the cookie you want to capture. For tcp frontends with ability to upgrade to http (either by tcp-request content switch-mode http or by choosing http backend) only single log-format allowed with no http-specific varables (%tr, %Ta). log Extended log format to haproxy_ex. HAProxy can operate either as a Layer 4 (TCP) proxy or as Layer 7 (HTTP) proxy. Only used if syslog-endpoint is also configured. 0. Then HAProxy tries to bind to all listening ports. TCP log format. default-dh global log 127. 68. In order to keep log format consistent for a same frontend, header captures can only be declared in a frontend. Once the debugging is completed reverse the configuration the same way it was It can be used to override the default log format without having to copy the whole original definition. "none": Only load the files A line like the following can be added to # /etc/sysconfig/syslog # # local2. HAProxy has lots of attributes that can be used in your custom log format, but some of them are not enabled by default, so you have to do a bit of work to have it in your logs. Log-Format for each Mode. ua)] backend:%{+Q}[var(txn. It may be one of the following : local Analog to <format> is the log format used when generating syslog messages. Customize the tcp, http or https log format using log format variables. hdr in the log-format. Let’s see To review, open the file in an editor that reveals hidden Unicode characters. If this is not present in the /etc/logrotate. What does this WARNING actually mean? My haproxy version is: # haproxy --version HA-Proxy version 1. cfg global # default provided I found another way to modify logging to be able to log the data I need. However I can’t find anything that describes the format of the health check logs. conf or mode-tcp. you’re missing an important piece of information with the default log format. Operate in HAProxy Enterprise mode (enforces <format> is the log format used when generating syslog messages. TCP mode is the default. But when running with large values of <format> is the log format used when generating syslog messages. <format> is the log format used when generating syslog messages. 1 local2 log /dev/log local0 debug chroot /var/lib/haproxy pidfile /var/run/haproxy. A line like the following can be added to # /etc/sysconfig/syslog # # In my case, for instance, i am running haproxy in CentOS 6. path)]” Then use the next statement in the frontend or the backend. No need to change the log format, use the default log format HAProxy’s log format string defines what HAProxy will log. Configure in the frontend. It can be HASAVELOG_ARGS has a default configuration of -e -r /var/log/hapee-<VERSION> -q, where logs are stored in /var/log/hapee-<VERSION>. hr),regsub()] and %[var(req. test)] agent:%{+Q}[var(txn. The default value is the HTTP log format , which generates a line that looks like this: This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. But when For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. is the recommended format for pure It can be used to override the default log format without having to copy the whole original definition. But when By default, haproxy tries to spread the start of health checks across the smallest health check interval of all the servers in a farm. 7. The following mail archive indicates that we need to use req. test-svc However, I see the following in the haproxy. While installing the newest HAProxy on Debian 12, I discovered that the default global log configuration was ignored. In some Hello, I am using HAProxy in a container as an ingress controller and the logs are sent to stdout. Example: If someone accessing my website, I want to display that user country code or country name in haproxy. I didn’t finish defining all of the fields yet, but you can get the idea. After that it will try to start haproxy with this configuration file, using "-st" or "-sf". Is it possible to use default vars or I need to use captures explicitely? In this case, capture. We are using the respective default log formats (option httplog and option tcplog) I now want to capture additional log information For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. Quoting from MEDIUM: log: Decompose %Tq in %Th %Ti %TR:. hdr(0)] but it only comes up as -. The type of logging you’ll see is determined by the proxy mode that you set within HAProxy. I want to use GoAccess with Haproxy which works as reverse proxy and load balancer. Specifically, facilities are ignored, all log messages use the daemon facility. The haproxy documentation is a bit misleading here:. 23:55309 [27/Oct/2015:20:14:34. 5 installation and the config has dozens of frontends and over a hundred backends. log I know what possible divide logs to levels (info, error, debug, etc) But how to configure haproxy in my case? Now I have log format by default (haproxy. 6, the same syslogd server and had to do the following to log to But I want to know is there anyway to capture the country code or country name in the haproxy log file. You can use the default logging format by Can be useful in the case you specified a directory. In some circumstances it might be desirable to force all relative paths to start from a different location just as if the process was started from such locations. Example: # Add the rule that gave the final verdict to the log log-format "${HAPROXY_TCP_LOG_FMT} lr=last_rule_file:last_rule_line" * HAPROXY_HTTPS_LOG_FMT: similar to HAPROXY_HTTP_LOG_FMT but for HTTPS log format as defined in section 8. hdr(referer)]\ {+Q}[req. Without specifying binary, CBOR is a hexadecimal format for interoperability purposes and can be more verbose than JSON and HAProxy’s default log format. 1:8000 where can i view the logs for my load balancer? (Haproxy) linux; ubuntu; <format> is the log format used when generating syslog messages. By default, HAProxy discovers automatically a lot of files not specified in the configuration, and you may want to disable this behavior if you want to optimize the startup time. But when Currently, my HAProxy logs have information about the incoming requests: HTTP version, method, host, path, and headers. 526 however I would prefer an ISO 8601-like date string. Can you exec a bash shell into the HAProxy container and ping the server from there? Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company, and our products You can log body by adding below in cfg file. Is it possible to change the date format of %t in HAproxy 2. I configured the log configuration below in the “default” section, log stdout format raw daemon info And configured the following log configuration in HTTP & TCP frontends respectively, HTTP frontends: option httplog log global option httpchk GET / server-template p9400_ 10 _p9400. Viewed 368 times 0 . I have setup a Lua script to process the request in HAProxy. In this post, we demonstrate its four most essential sections. pid maxconn 4000 user haproxy group haproxy daemon # turn on stats unix socket stats socket /var/lib/haproxy/stats ssl-default-bind-options no-sslv3 tune. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for Defaults to HAProxy default TCP log format. Stack Exchange Network. Now create the log rotate file for HAProxy. Create the custom log format. Example: # Add the rule that gave the final verdict to the log log-format "${HAPROXY_TCP_LOG_FMT} lr=last_rule_file:last_rule_line" By default HAProxy loads all files designated by a relative path from the location the process is started in. What happens then is the following. The default log format could be not enough for you, and you would like a custom log format that can satisfy your needs. 69. Together, these two encoding options give HAProxy users You have now configured Rsyslog to read log entries from the Unix domain socket in /var/lib/haproxy/dev/log and write them to a log file in /var/log/haproxy. tcp-service-log-format : log format of TCP frontends, configured via ingress resources and tcp-service-port configuration key. Common wisdom says that you should add the option httplog configuration directive to your frontend or defaults section when using Default and Pre-Configured Logging Formats. But when <format> is the log format used when generating syslog messages. But if you It can be used to override the default log format without having to copy the whole original definition. 4:53 nameserver dns-1 172. The principle is to avoid hammering services running on the same server. Enables ('on') or disables ('off') the low-latency task scheduler. I understand that it is possible to log the BODY of a POST request with HAProxy since version 1. http-log-format: log format of all HTTP proxies, defaults to HAProxy default HTTP log format. In addition to this, we have new timestamps %tr, %trg and %trl, which log the date of start of receipt of the request, respectively in the Creating the log rotate file. header(i) returns dash for empty header instead of empty line in %hr I was <format> is the log format used when generating syslog messages. user: http-request set-var(txn. 3 default local log format always adds hostame field. The haproxy[n] entry is further behind in the >= 2. g. log file. 4:53 hold valid Values. body somehow and log the capture. You can view the general HAProxy logs with the following command: sudo tail -f /var/log/haproxy. E. 0 Debian 12. It can be used to override the default log format without having to copy the whole original definition. I don't see any logging in my log file, /var/log/haproxy. First, the service script (/etc/init. 8 2014/10/31 Sorted by: Reset to default 10 . Example: # Add the rule that gave the final verdict to the log log-format "${HAPROXY_TCP_LOG_FMT} lr=last_rule_file: This setting allows to configure the way HAProxy does the lookup for the extra SSL files. d/haproxy or equivalent) will verify that the configuration file parses correctly using "haproxy -c". Here i am copy pasting it for you - configure local2 events to go to the /var/log/haproxy. Even though I had configured a log-format directive in the defaults section, there were some frontends that had set option tcplog and option httplog clf which were overriding the log format I had configured. you rely on a standard log format and HAProxy must also comply For logging, HAProxy always relies on a syslog server since it does not perform any file-system access. 4:53 nameserver dns-2 172. Modified 2 years, 7 months ago. So far my solution is to use universal tcp-specific log-format Core log Lua in Haproxy does not log to the default haproxy log file. 8. Are there alternative ways to get the accepted date with millisecond resolution in an I have log-format with %hr and %r vars and I want to do regsub before logging them. conf file provides clear instructions under the Global settings - global. 2. log and we’ll keep it that way (you can remove it if you want). * HAPROXY_HTTP_LOG_FMT: contains the value of the default HTTP log format as defined in section 8. (ex: with <format> is the log format used when generating syslog messages. cfg) and it is good for application to parse logs mode http log By default HAProxy loads all files designated by a relative path from the location the process is started in. I have turned on basicauth on backend server and I wanted to see in HAprogxy log who is making requests. 2302. To log the captured cookies, you'll use %CC #captured_request_cookie %CS #captured_response_cookie You will have to use the log-format option and create a custom log that includes those cookies. If I just add the log-format format to the backend, it changes for both loggers. pid maxconn 4000 user haproxy group haproxy daemon # turn on stats unix socket stats socket /var/lib/haproxy/stats ssl-default-bind-options no Finally, you can verify that HAProxy logging is working correctly by checking the HAProxy log files. However, no matter how I try to capture it, I cannot make it appear in the log. This is the HAProxy log and there is no other. For example I get the following logs as backend servers go up/down: [pod/west It can be used to override the default log format without having to copy the whole original definition. This keeps on rotating and compressing the log file, itself. Ask Question Asked 2 years, 7 months ago. By default HAProxy adds a new extension to the filename. back)] path:%{+Q}[var(txn. HTTP-request capture req. Since 2. However, it seems that the real message sent by HAProxy starts off like this: May 4 00:30:06 0262e79d1cbb haproxy[11]: {"message": By default, haproxy tries to spread the start of health checks across the smallest health check interval of all the servers in a farm. My goal is to create a custom log format which will be looking exactly like apache2 (compatible with default goaccess settings). It is upset because the config file says to use the High Availability is a group of the computer that ensures the availability of backup servers with no down-time.
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