Configuring php agent at the application

dvmorais · October 15, 2020, 9:36pm

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Kibana version:

7.9.2

Elasticsearch version:

7.9.2

APM Server version:

7.9.2

APM Agent language and version:

php agent 0.2

Browser version:

Chrome 85

Original install method (e.g. download page, yum, deb, from source, etc.) and version:

download page, from .tar file

Fresh install or upgraded from other version?

Fresh install

Is there anything special in your setup? For example, are you using the Logstash or Kafka outputs? Are you using a load balancer in front of the APM Servers? Have you changed index pattern, generated custom templates, changed agent configuration etc.

no, single vm for elasticsearch, kibana and apm server.

Description of the problem including expected versus actual behavior. Please include screenshots (if relevant):

Hello,

First of all sorry for the english, not my native language.

I followed the docs at the https://github.com/elastic/apm-agent-php/blob/master/docs/setup.asciidoc to install the php agent at my application, created the extension and added at the .ini file... but the data isnt being showed at my kibana UI.

Seems a dumb question but... am I missing something??? I still need to do something for the agent send data to my apm server?

thanks in advance.

Steps to reproduce:

Followed PHP agent docs.
restarted httpd
restarted apm-server

Errors in browser console (if relevant):

Provide logs and/or server output (if relevant):

GHostlyFOX · October 16, 2020, 3:06am

I assembled the agent, installed it. It sends information on simple hits. But due to failures it cannot.

Server log - 404

2020-10-15T22:24:10.485+0600 ERROR [request] middleware/log_middleware.go:95 404 page not found {"request_id": "e37a92cc-4c83-42b7-a494-ed1cece443cd", "method": "POST", "URL": "/intake/v2/events/errors", "content_length": 2772, "remote_address": "127.0.0.1", "user-agent": "elasticapm-php/6.5.4", "response_code": 404, "error": "404 page not found"}

Sergey_Kleyman · October 16, 2020, 4:02am

@dvmorais Welcome to the forum!

Could you please provide agent's logs? By default agent logs to syslog and you can even increase amount of logs (for example by setting agent's log level to TRACE) as described in the documentation.

Sergey_Kleyman · October 16, 2020, 4:10am

@GHostlyFOX Welcome to the forum!

If you and @dvmorais are talking about different cases then please open a separate topic. For now since you've already opened a Github issue I've replied there.

dvmorais · October 16, 2020, 1:35pm

What I did now:

Changed agent logs to "TRACE"
restarted apm-server
restarted httpd.
checked /var/log/messages

well... nothing related to agent appeared on the log messages...

The thing is... I cant really understand where I integrate the agent with my application... shouldnt I load the elastic_apm.so extension in php.ini or something around this? Maybe am I missing something?

thanks in advance.

Sergey_Kleyman · October 16, 2020, 1:47pm

Yes, you are right - elastic_apm.so needs to be added to php.ini as described in the documentation. The documentation mentions elastic_apm.ini but it should be php.ini (I'll fix it shortly).

dvmorais · October 16, 2020, 2:34pm

I added these on php.ini:

extension=elastic_apm.so
elastic_apm.enabled=true
elastic_apm.server_url=http://not.localhost:8200
elastic_apm.service_name=testegpd123
elastic_apm.bootstrap_php_part_file = /directory/to/apm-agent-php/src/bootstrap_php_part.php

so... my php application is working but... my kibana still cant see any traces.

log messages:
Oct 16 11:13:48 FrontendSEE php[1913]: Elastic APM PHP Tracer [PID: 1913] [TID: 1913] 2020-10-16 11:13:48.452661-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:13:48 FrontendSEE php[1913]: Elastic APM PHP Tracer [PID: 1913] [TID: 1913] 2020-10-16 11:13:48.452733-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:14:18 FrontendSEE php[1915]: Elastic APM PHP Tracer [PID: 1915] [TID: 1915] 2020-10-16 11:14:18.330886-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:14:18 FrontendSEE php[1915]: Elastic APM PHP Tracer [PID: 1915] [TID: 1915] 2020-10-16 11:14:18.330957-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:15:10 FrontendSEE php[1918]: Elastic APM PHP Tracer [PID: 1918] [TID: 1918] 2020-10-16 11:15:10.279153-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:15:10 FrontendSEE php[1918]: Elastic APM PHP Tracer [PID: 1918] [TID: 1918] 2020-10-16 11:15:10.279240-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'

Sergey_Kleyman · October 16, 2020, 2:40pm

Those are just erroneous/redundant log messages but there's no actual issue behind them.

The fix is already merged to master.

dvmorais · October 16, 2020, 3:54pm

Built from master as you recommended. still no data.

I did some prints if it can help you to detect something wrong in what I did.

if everything is allright probably is something wrong on my application...

strangely... my phpinfo(). page stopped working after I turned on the elastic_apm extension.

<?php
phpinfo();
?>

Sergey_Kleyman · October 16, 2020, 6:02pm

The agent integrates with phpinfo() mechanism so it's technically possible for the agent to affect.

Could you please set log_level_syslog to TRACE and get the agent logs, that cover a request (preferably a one which execution invokes phpinfo()) from syslog?

dvmorais · October 16, 2020, 6:46pm

php -i | grep elastic

elastic_apm
elastic_apm.abort_on_memory_leak =>    
elastic_apm.api_key =>    
elastic_apm.assert_level =>    
elastic_apm.bootstrap_php_part_file => /produtos/apm-agent-php-master/src/bootstrap_php_part.php => /produtos/apm-agent-php-master/src/bootstrap_php_part.php => /produtos/apm-agent-php-master/src/bootstrap_php_part.php
elastic_apm.enabled => 1 => 1 => 1
elastic_apm.internal_checks_level =>    
elastic_apm.log_file =>    
elastic_apm.log_level => TRACE => TRACE => TRACE
elastic_apm.log_level_file =>    
elastic_apm.log_level_stderr =>    
elastic_apm.log_level_syslog => TRACE => TRACE => TRACE
elastic_apm.memory_tracking_level =>    
elastic_apm.secret_token =>    
elastic_apm.server_connect_timeout =>    
elastic_apm.server_url => http://10.14.210.210:8200 => http://10.14.210.210:8200 => http://10.14.210.210:8200
elastic_apm.service_name => testegpd12345 => testegpd12345 => testegpd12345
elastic_apm.verify_server_cert =>    
elastic_apm.abort_on_memory_leak => no value => no value
elastic_apm.api_key => no value => no value
elastic_apm.assert_level => no value => no value
elastic_apm.bootstrap_php_part_file => /produtos/apm-agent-php-master/src/bootstrap_php_part.php => /produtos/apm-agent-php-master/src/bootstrap_php_part.php
elastic_apm.enabled => 1 => 1
elastic_apm.internal_checks_level => no value => no value
elastic_apm.log_file => no value => no value
elastic_apm.log_level => TRACE => TRACE
elastic_apm.log_level_file => no value => no value
elastic_apm.log_level_stderr => no value => no value
elastic_apm.log_level_syslog => TRACE => TRACE
elastic_apm.memory_tracking_level => no value => no value
elastic_apm.secret_token => no value => no value
elastic_apm.server_connect_timeout => no value => no value
elastic_apm.server_url => http://10.14.210.210:8200 => http://10.14.210.210:8200
elastic_apm.service_name => testegpd12345 => testegpd12345
elastic_apm.verify_server_cert => no value => no value

last 3 lines from /var/log/messages

Oct 16 15:10:20 FrontendSEE dnf[6604]: Criado cache de metadados
Oct 16 15:10:20 FrontendSEE systemd[1]: Started dnf makecache.
Oct 16 15:13:08 FrontendSEE systemd-logind[1064]: Removed session 21.

info.php

<?php
phpinfo();
?>

Sergey_Kleyman · October 17, 2020, 4:18am

Could you please provide all the lines from syslog that contain Elastic APM PHP Tracer?

dvmorais · October 17, 2020, 2:37pm

Oct 16 11:13:48 FrontendSEE php[1913]: Elastic APM PHP Tracer [PID: 1913] [TID: 1913] 2020-10-16 11:13:48.452661-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:13:48 FrontendSEE php[1913]: Elastic APM PHP Tracer [PID: 1913] [TID: 1913] 2020-10-16 11:13:48.452733-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:14:18 FrontendSEE php[1915]: Elastic APM PHP Tracer [PID: 1915] [TID: 1915] 2020-10-16 11:14:18.330886-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:14:18 FrontendSEE php[1915]: Elastic APM PHP Tracer [PID: 1915] [TID: 1915] 2020-10-16 11:14:18.330957-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:15:10 FrontendSEE php[1918]: Elastic APM PHP Tracer [PID: 1918] [TID: 1918] 2020-10-16 11:15:10.279153-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'
Oct 16 11:15:10 FrontendSEE php[1918]: Elastic APM PHP Tracer [PID: 1918] [TID: 1918] 2020-10-16 11:15:10.279240-04:00 [ERROR]    [Ext-API] [elastic_apm_API.c:135] [elasticApmInterceptCallsToInternalMethod] zend_hash_str_find_ptr( CG( class_table ), ... ) failed. className: `PDO'

this is the messages before I built the extension from master. so.... no new logs.

system · November 7, 2020, 10:37am

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