Mediawiki SphinxSearch扩展杀死Apache

Question

我正试图为我的公司建立基于Mediawiki的知识基础。

我已经在我自己的VDS上安装和配置了Mediawiki 1.21.2 (debian，Apache2.2.16)。( php 5.3.3.7)我使用了狮身人面像搜索引擎和SphinxSearch Mediawiki扩展。

但是，现在我尝试在生产虚拟服务器(CentOS、apache 2.2.15+nginx 1.0.15、php 5.3.3和Mediawiki 1.21.3)上也这样做，并在搜索方面遇到了一些问题：

当我提出一个应该明确返回的搜索请求时，nginx会显示502坏网关错误。如果没有要返回的信息，则会显示一条常见的MediaWiki消息。

在apache日志中，我看到以下内容：

[Wed Dec 04 14:06:27 2013] [notice] child pid 12603 exit signal Segmentation fault (11)

在站点的错误日志中，只有一些关于StrictStandart的警告：

[Wed Dec 04 11:30:09 2013] [error] [client 127.0.0.1] PHP Strict Standards:  Declaration of SphinxMWSearch::userHighlightPrefs() should be compatible with that of SearchEngine::userHighlightPrefs() in /var/www/vhosts/itkgwiki/extensions/SphinxSearch/SphinxMWSearch.php on line 15, referer: http://my-site/pagename
[Wed Dec 04 11:30:10 2013] [error] [client 127.0.0.1] PHP Strict Standards:  Declaration of SphinxMWSearch::userHighlightPrefs() should be compatible with that of SearchEngine::userHighlightPrefs() in /var/www/vhosts/itkgwiki/extensions/SphinxSearch/SphinxMWSearch.php on line 329, referer: http://my-site/pagename

然后转到mediawiki日志文件：

Start request GET /index.php?search=test&fulltext=%D0%9D%D0%B0%D0%B9%D1%82%D0%B8&title=%D0%A1%D0%BB%D1%83%D0%B6%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%3A%D0%9F%D0%BE%D0%B8%D1%81%D0%BA
HTTP HEADERS:
HOST: itkg-wiki-new
X-REAL-IP: 192.68.0.136
X-FORWARDED-FOR: 192.68.0.136
CONNECTION: close
ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
USER-AGENT: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36
REFERER: http://itkg-wiki-new/w/%D0%97%D0%B0%D0%B3%D0%BB%D0%B0%D0%B2%D0%BD%D0%B0%D1%8F_%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%B8%D1%86%D0%B0
ACCEPT-ENCODING: gzip,deflate,sdch
ACCEPT-LANGUAGE: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4
COOKIE: show-.7B.7B.7B2.7D.7D.7D=collapsed; show-MM=expanded; show-HR-PV=expanded; show-FM=expanded; show-PM=expanded; show-IM=expanded; show-PS=expanded; show-RE=expanded; show-ADV=expanded; show-HR_PB=expanded; show-AA=expanded; show-ZBSL=expanded; show-HRM=expanded; show-REP=expanded; show-FOT=expanded; show-PFR=expanded; show-TAB=expanded; show-KAD=expanded; show-FI=expanded; show-NAV=expanded; show-PP=expanded; show-SL=collapsed; show-SHR=collapsed; show-CO=collapsed; wikiEditor-0-booklet-characters-page=latin; wikiEditor-0-booklet-help-page=format; vector-nav-p-tb=true; jwplayer.volume=100; jwplayer.mute=false; show-FI=expanded; show-NAV=expanded; show-SL=expanded; itkgwikiUserID=2; itkgwikiUserName=Oleg; itkgwiki_session=55dd7644b240946c896c4db9c54f8e73; wikiEditor-0-toolbar-section=advanced
CACHES: EmptyBagOStuff[main] SqlBagOStuff[message] SqlBagOStuff[parser]
[cookie] session_set_cookie_params: "0", "/", "", "", "1"
LocalisationCache: using store LCStore_DB
Unstubbing $wgParser on call of $wgParser::setFunctionHook from SimpleSecurity::setup
Parser: using preprocessor: Preprocessor_DOM
Connecting to localhost itkgwiki...
Implicit transaction open enabled.
Profiler::instance called without $wgProfiler['class'] set, falling back to ProfilerStub for safety
Connected to localhost itkgwiki.
Connected to database 0 at localhost
Implicit transaction start.
Fully initialised
User: cache miss for user 2
User: loading options for user 2 from database.
User: logged in from session
User: loading options for user 2 from override cache.
Connecting to localhost itkgwiki...
Implicit transaction open enabled.
Connected to localhost itkgwiki.
Connected to database 0 at localhost
Implicit transactions are now disabled.
Connection Resource id #124 will be used for SqlBagOStuff
MessageCache::load: Loading ru... got from global cache
Unstubbing $wgLang on call of $wgLang::_unstub from ParserOptions::__construct
SphinxSearch query: test
Use of wfMsg was deprecated in MediaWiki 1.21. [Called from SphinxMWSearchResultSet::getInfo in /var/www/vhosts/itkgwiki/extensions/SphinxSearch/SphinxMWSearch.php at line 545]
Use of wfMsgReal was deprecated in MediaWiki 1.21. [Called from wfMsg in /var/www/vhosts/itkgwiki/includes/GlobalFunctions.php at line 1444]
Use of wfMsgGetKey was deprecated in MediaWiki 1.21. [Called from wfMsgReal in /var/www/vhosts/itkgwiki/includes/GlobalFunctions.php at line 1542]
[ContentHandler] Created handler for wikitext: WikitextContentHandler

让我们来看看strace apache：

30093 15:33:08.748226 lstat("/var/www/vhosts/itkgwiki/includes/content/WikitextContentHandler.php", {st_mode=S_IFREG|0644, st_size=2516, ...}) = 0 
30093 15:33:08.748280 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.748332 open("/var/www/vhosts/itkgwiki/includes/content/WikitextContentHandler.php", O_RDONLY) = 16                  30093 15:33:08.748403 fstat(16, {st_mode=S_IFREG|0644, st_size=2516, ...}) = 0 
30093  15:33:08.748469 fstat(16, {st_mode=S_IFREG|0644, st_size=2516, ...}) = 0 
30093 15:33:08.748547 fstat(16, {st_mode=S_IFREG|0644, st_size=2516, ...}) = 0 
30093 15:33:08.748607 mmap(NULL, 2516, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc4000 
30093 15:33:08.748756 munmap(0x7f4866fc4000, 2516) = 0 
30093 15:33:08.748800 close(16)         = 0 
30093 15:33:08.748851 lstat("/var/www/vhosts/itkgwiki/includes/content/TextContentHandler.php", {st_mode=S_IFREG|0644, st_size=3236, ...}) = 0 
30093 15:33:08.748904 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.748956 open("/var/www/vhosts/itkgwiki/includes/content/TextContentHandler.php", O_RDONLY) = 16 30093 15:33:08.749035 fstat(16, {st_mode=S_IFREG|0644, st_size=3236, ...}) = 0 
30093 15:33:08.749101 fstat(16, {st_mode=S_IFREG|0644, st_size=3236, ...}) = 0 
30093 15:33:08.749162 fstat(16, {st_mode=S_IFREG|0644, st_size=3236, ...}) = 0 
0093 15:33:08.749223 mmap(NULL, 3236, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc4000 
30093 15:33:08.749434 munmap(0x7f4866fc4000, 3236) = 0 
30093 15:33:08.749492 close(16)         = 0 
30093 15:33:08.749606 lstat("/var/www/vhosts/itkgwiki/includes/content/WikitextContent.php", {st_mode=S_IFREG|0644, st_size=9098, ...}) = 0 
30093 15:33:08.749661 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.749713 open("/var/www/vhosts/itkgwiki/includes/content/WikitextContent.php", O_RDONLY) = 16 
30093 15:33:08.749785 fstat(16, {st_mode=S_IFREG|0644, st_size=9098, ...}) = 0 
30093 15:33:08.749850 fstat(16, {st_mode=S_IFREG|0644, st_size=9098, ...}) = 0 
30093 15:33:08.749911 fstat(16, {st_mode=S_IFREG|0644, st_size=9098, ...}) = 0 
30093 15:33:08.749972 mmap(NULL, 9098, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc2000 
30093 15:33:08.750399 brk(0x7f486a134000) = 0x7f486a134000 
30093 15:33:08.750546 munmap(0x7f4866fc2000, 9098) = 0 
30093 15:33:08.750596 close(16)         = 0 
30093 15:33:08.750644 lstat("/var/www/vhosts/itkgwiki/includes/content/TextContent.php", {st_mode=S_IFREG|0644, st_size=8039, ...}) = 0 
30093 15:33:08.750696 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.750748 open("/var/www/vhosts/itkgwiki/includes/content/TextContent.php", O_RDONLY) = 16 30093 15:33:08.750818 fstat(16, {st_mode=S_IFREG|0644, st_size=8039, ...}) = 0 
30093 15:33:08.750884 fstat(16, {st_mode=S_IFREG|0644, st_size=8039, ...}) = 0 
30093 15:33:08.750945 fstat(16, {st_mode=S_IFREG|0644, st_size=8039, ...}) = 0 
30093 15:33:08.751005 mmap(NULL, 8039, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc3000 
30093 15:33:08.751380 munmap(0x7f4866fc3000, 8039) = 0 
30093 15:33:08.751429 close(16)         = 0 
30093 15:33:08.751491 lstat("/var/www/vhosts/itkgwiki/includes/content/AbstractContent.php", {st_mode=S_IFREG|0644, st_size=10154, ...}) = 0 
30093 15:33:08.751544 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.751597 open("/var/www/vhosts/itkgwiki/includes/content/AbstractContent.php", O_RDONLY) = 16 
30093 15:33:08.751640 fstat(16, {st_mode=S_IFREG|0644, st_size=10154, ...}) = 0 
30093 15:33:08.751708 fstat(16, {st_mode=S_IFREG|0644, st_size=10154, ...}) = 0 
30093 15:33:08.751769 fstat(16, {st_mode=S_IFREG|0644, st_size=10154, ...}) = 0 
30093 15:33:08.751830 mmap(NULL, 10154, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc2000 30093 15:33:08.752214 munmap(0x7f4866fc2000, 10154) = 0 
30093 15:33:08.752261 close(16)         = 0 
30093 15:33:08.752315 lstat("/var/www/vhosts/itkgwiki/includes/content/Content.php", {st_mode=S_IFREG|0644, st_size=16546, ...}) = 0 
30093 15:33:08.752366 lstat("/var/www/vhosts/itkgwiki/includes/content", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 
30093 15:33:08.752418 open("/var/www/vhosts/itkgwiki/includes/content/Content.php", O_RDONLY) = 16 
30093 15:33:08.752462 fstat(16, {st_mode=S_IFREG|0644, st_size=16546, ...}) = 0 
30093 15:33:08.752544 fstat(16, {st_mode=S_IFREG|0644, st_size=16546, ...}) = 0 
30093 15:33:08.752611 fstat(16, {st_mode=S_IFREG|0644, st_size=16546, ...}) = 0 
30093 15:33:08.752671 mmap(NULL, 16546, PROT_READ, MAP_SHARED, 16, 0) = 0x7f4866fc0000 30093 15:33:08.752945 munmap(0x7f4866fc0000, 16546) = 0 
30093 15:33:08.752994 close(16)         = 0 
30093 15:33:08.753141 --- SIGSEGV (Segmentation fault) @ 0 (0) --- 
30093 15:33:08.753259 chdir("/etc/httpd") = 0 30093 15:33:08.753303 rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER|SA_INTERRUPT, 0x7f486592f500}, {SIG_DFL, [], SA_RESTORER|SA_RESETHAND, 0x7f486592f500}, 8) = 0 
30093 15:33:08.753359 kill(30093, SIGSEGV) = 0 
30093 15:33:08.753395 rt_sigreturn(0x758d) = 0 
30093 15:33:08.753431 --- SIGSEGV (Segmentation fault) @ 0 (0) ---

我的技能太差，无法从这方面作出渴望，所以我很乐意得到任何建议。

Answer 1

基本上，问题似乎是，在MediaWiki 1.18中，SearchEngine::userHighlightPrefs()方法是变化，不再将用户对象作为参数。不幸的是，此更改导致任何覆盖该方法的现有子类在PHP严格模式下中断。

坦率地说，我认为这是一个糟糕的决定:那些打算被第三方代码子类化的类不应该让它们的方法签名在没有很好的理由的情况下被任意更改。尽管如此，它发生在两年前，所以现在要求它恢复可能有点晚了。最好的做法可能是放弃所有的混乱，修复所有的扩展，而不是使用它；事实上，这应该在很久以前就已经完成了，但是很显然，SphinxSearch扩展最近一直缺乏维护的注意。

无论如何，有几种方法可以自己解决这个问题：

• 我建议的修复方法是将SphinxSearch升级到最新版本，最近出现问题的方法重写是删除。不过，我不太确定这是否完全解决了这个问题，因为该方法似乎仍然是从代码的一部分中调用的，并带有额外的用户参数。但是如果没有，那就是扩展中的一个bug，应该是已报告。
• 您还可以自己修改SphinxSearch代码，删除自定义的userHighlightPrefs()方法和对它的任何调用。如果您确实让它以这种方式工作(首先升级到最新版本)，您可能希望将更改作为一个修补程序提交。
• 最后，正如关于mediawiki.org的讨论中所建议的，您只需在php.ini中关闭严格模式，例如设置： error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT