11-28-2008
Error message: What does it mean?
I get this error message in my maillog. Can someone tell me what it means?
SYSERR(root): collect: I/O error on connection from mail-05.goomba.com
I guess it means that the server could not connect to mail-06.goomba.com. Is my interpretation correct?
Any idea why it happens?
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LEARN ABOUT PHP
mongoconnectionexception
MONGOCONNECTIONEXCEPTION(3) 1 MONGOCONNECTIONEXCEPTION(3)
The MongoConnectionException class
INTRODUCTION
Thrown when the driver fails to connect to the database.
There are a number of possible error messages to help you diagnose the connection problem. These are:
o No candidate servers found Thrown when the driver cannot establish a connection to MongoDB (fulfilling the ReadPreferences, if
specified).
o No server name given. This error occurs if you pass in "" as the server name, probably because of an typo with string interpola-
tion, e.g., "$servr" instead of "$server".
o
failed to get host [hostname] or port [portnum] from [server]. This indicated that the server string was malformed. "[hostname]"
and "[portnum]" will be as much as the driver could dicipher of it.
o Operation in progress Connecting to the database timed out.
o Transport endpoint is not connected Generally means that the connection string isn't correct, the driver couldn't even find the
database server.
o couldn't determine master No server in a replica set connection was identified as the primary.
o couldn't get host info for [server] This indicated that DNS could not resolve the server address you gave. This could easily be
caused by a typo, for example, "server" instead of "$server".
o Invalid Argument This can be caused by attempting to connect to a machine that is up but that the database isn't actually running
on. Make sure that you've started the database server before connecting.
o Permission denied This means that the socket could not be opened due to permissions issues. On Red Hat variants, this can be
caused by a default setting that does not allow Apache to create network connections. You can override this setting by running:
$ /usr/sbin/setsebool -P httpd_can_network_connect 1
If the error message is not listed above, it is probably an error from the C socket, and you can search the web for its usual cause.
CLASS SYNOPSIS
MongoConnectionException
MongoConnectionExceptionextends
MongoException
PHP Documentation Group MONGOCONNECTIONEXCEPTION(3)