php - session_start hangs -


since few hours our server hangs every time session_start.

for testing purposes created script looks this:

<?php session_start(); ?>

calling console hangs , can't stopped ctrl-c, kill -9 works. same calling via apache. /var/lib/php/session/ stays empty permissions absolutely fine, www can write , has read permissions parent folders.

according admins there no changes made on server , there no special code registered sessions. server centos 4 or 5 , yesterday working perfectly. rebooted server , updated php, nothing changed.

i've ran out of ideas, suggestions?

update

we solved problem moving project server, while problem still exists on 1 server there no immediate need solution anymore. keep question open in case has idea others having similar problem in future, though.

there many reasons that, here few of them:

a. session file opened exclusively. when file lock not released whatever reason, causing session_start() hang infinitely on future script executions. workaround: use session_set_save_handler() , make sure write function uses fopen($file, 'w') instead of fopen($file, 'x')

b. never use following in php.ini file (entropie file "/dev/random"), cause session_start() hang:

<?php ini_set("session.entropy_file", "/dev/random"); ini_set("session.entropy_length", "512"); ?>

c. session_start() needs directory write to.

you can apache plus php running in normal user account. apache of course have listen other port 80 (for instance, 8080).

be sure following things: - create temporary directory prefix/tmp - put php.ini in prefix/lib - edit php.ini , set session.save_path directory created

otherwise, scripts seem 'hang' on session_start().


Comments

Post a Comment

Popular posts from this blog

asp.net - repeatedly call AddImageUrl(url) to assemble pdf document -

i'm using abcpdf , i'm curious if can recursively call addimageurl() function assemble pdf document compile multiple urls? something like: int pagecount = 0; int theid = thedoc.addimageurl("http://stackoverflow.com/search?q=abcpdf+footer+page+x+out+of+", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetochain(theid); } pagecount = thedoc.pagecount; console.writeline("1 document page count:" + pagecount); //flatten document (int = 1; <= pagecount; i++) { thedoc.pagenumber = i; thedoc.flatten(); } //now try again theid = thedoc.addimageurl("http://stackoverflow.com/questions/1980890/pdf-report-generation", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetoc...
Read more

java - Android recognize cell phone with keyboard or not? -

in android app, want detect user's device if device has keyboard(like motorola milestone) , show corresponding user interface. guys know how that? ! regards justicepenny http://developer.android.com/reference/android/content/res/configuration.html public int keyboard the kind of keyboard attached device. 1 of: keyboard_nokeys, keyboard_qwerty, keyboard_12key. that's it!
Read more

iphone - How would you achieve a LED Scrolling effect? -

how achieve led scrolling effect example below? led sign - led ticker emulator iphone , ipad http://img.skitch.com/20101201-rsfh4p1bajb1wp94k466pdpiuj.preview.jpg sometimes remunerates comment in other posts :) have put code you, should implement font '8pin matrix' realistic feeling. uilabel *label; - (void)viewdidload { [super viewdidload]; label = [[uilabel alloc]initwithframe:cgrectmake(10, 50, 300, 20)]; label.font = [uifont fontwithname:@"courier-bold" size:16.0]; label.backgroundcolor = [uicolor blackcolor]; label.textcolor = [uicolor greencolor]; label.linebreakmode = uilinebreakmodecharacterwrap; // otherwise "…" label.text = @"this led text scrolled "; // blanks space between [self.view addsubview:label]; [nstimer scheduledtimerwithtimeinterval:0.12f target:self selector:@selector(scrolllabel) use...
Read more