error log truncates important infos

[philipp]

We have error logs like this:

2016/06/14 12:47:45 [error] 21036#21036: *378143 FastCGI sent in stderr:
"PHP message: PHP Notice:  Undefined index: model_name in
/data/example.com/module/SalesFloor/view/partial/flyout/product.phtml on
line 20
PHP message: PHP Notice:  Undefined index: model_name in
/data/example.com/module/SalesFloor/view/partial/flyout/product.phtml on
line 21
PHP message: PHP Notice:  Undefined index: model_name in
/data/example.com/module/SalesFloor/view/partial/flyout/product.phtml on
line 23
PHP message: PHP Notice:  Undefined index: reducedprice in
/data/example.com/module/SalesFloor/view/partial/flyout/product.phtml on
line 24
PHP message: PHP Notice:  Undefined index: currentprice in
/data/example.com/module/SalesFloor/view/partial/flyout/product.phtml on
line 24" while reading response header from upstream, client: 127.0.0.1,
server: example.com, request: "GET / HTTP/1.1", upstream:
"fastcgi://unix:/var/run/php-fpm-example.com.sock:", host: "127.0.0.1"

For us the most important parts are the values in the last line like client,
server and so on.

Sometimes we see erros like this:

2016/06/14 12:47:23 [error] 31450#31450: *177931 FastCGI sent in stderr:
"PHP message: PHP Notice:  pg_execute(): Cannot set connection to blocking
mode in
/data/example.com/vendor/zendframework/zend-db/src/Adapter/Driver/Pgsql/Statement.php
on line 228
PHP message: PHP Fatal error:  Uncaught exception
'Zend\Db\Adapter\Exception\InvalidQueryException' with message 'FATAL: 
terminating connection due to administrator command
SSL connection has been closed unexpectedly' in
/data/example.com/vendor/zendframework/zend-db/src/Adapter/Driver/Pgsql/Statement.php:235
Stack trace:
#0
/data/example.com/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php(238):
Zend\Db\Adapter\Driver\Pgsql\Statement->execute()
#1
/data/example.com/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php(208):
Zend\Db\TableGateway\AbstractTableGateway->executeSelect(Object(Zend\Db\Sql\Select))
#2 /data/example.com/corporate/XYZ/src/XYZ/Table/Table.php(758):
Zend\Db\TableGateway\AbstractTableGateway->selectWith(Object(Zend\Db\Sql\Select))
#3 /data/example.com/module/Product/src/Product/Table/Product.php(835):
XYZ\Table\Table->selectWith(Object(Zend\Db\Sql\Select))
#4
/data/example.com/module/Product/src/Product/DataService/ProductDataService.php(232):
Product\Table\P...
PHP message: PHP Notice:  pg_prepare(): Cannot set connection to blocking
mode in
/data/example.com/vendor/zendframework/zend-db/src/Adapter/Driver/Pgsql/Statement.php
on line 179
PHP message: PHP Notice:  pg_execute(): Cannot set connection to blocking
mode in
/data/example.com/vendor/zendframework/zend-db/src/Adapter/Driver/Pgsql/Statement.php
on line 228
PHP message: PHP Fatal error:  Uncaught exception
'Zend\Db\Adapter\Exception\InvalidQueryException' with message 'FATAL: 
terminating connection due to administrator command
SSL connection has been closed unexpectedly' in
/data/example.com/vendor/zendframework/zend-db/src/Adapter/Driver/Pgsql/Statement.php:235
Stack trace:
#0
/data/example.com/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php(238):
Z

It looks like they are truncated. We miss a lot of important information
like client ip and so on. Is this a known limitation or bug in nginx?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,267568,267568#msg-267568