MediaWiki internal error.

Original exception: exception 'DBQueryError' with message 'A database error has occurred
Query: SELECT /*! STRAIGHT_JOIN */ page_id,page_namespace,page_title,page_is_redirect FROM `wiki_pagelinks`,`wiki_page` WHERE (page_id=pl_from) AND pl_namespace = '0' AND pl_title = 'Иван_III' AND page_is_redirect = '1' ORDER BY pl_from LIMIT 51
Function: WhatLinksHerePage::showIndirectLinks
Error: 1053 Server shutdown in progress (localhost)
' in /home/itaka/www/itaka.pw/wikitaka/includes/db/Database.php:610
Stack trace:
#0 /home/itaka/www/itaka.pw/wikitaka/includes/db/Database.php(565): Database->reportQueryError('Server shutdown...', 1053, 'SELECT /*! STR...', 'WhatLinksHerePa...', false)
#1 /home/itaka/www/itaka.pw/wikitaka/includes/db/Database.php(973): Database->query('SELECT /*! STR...', 'WhatLinksHerePa...')
#2 /home/itaka/www/itaka.pw/wikitaka/includes/specials/SpecialWhatlinkshere.php(154): Database->select(Array, Array, Array, 'WhatLinksHerePa...', Array)
#3 /home/itaka/www/itaka.pw/wikitaka/includes/specials/SpecialWhatlinkshere.php(82): WhatLinksHerePage->showIndirectLinks(0, Object(Title), 50, 0, 0)
#4 /home/itaka/www/itaka.pw/wikitaka/includes/specials/SpecialWhatlinkshere.php(16): WhatLinksHerePage->execute()
#5 [internal function]: wfSpecialWhatlinkshere('\xD0\x98\xD0\xB2\xD0\xB0\xD0\xBD_III', Object(SpecialPage))
#6 /home/itaka/www/itaka.pw/wikitaka/includes/SpecialPage.php(748): call_user_func('wfSpecialWhatli...', '\xD0\x98\xD0\xB2\xD0\xB0\xD0\xBD_III', Object(SpecialPage))
#7 /home/itaka/www/itaka.pw/wikitaka/includes/SpecialPage.php(534): SpecialPage->execute('\xD0\x98\xD0\xB2\xD0\xB0\xD0\xBD_III')
#8 /home/itaka/www/itaka.pw/wikitaka/includes/Wiki.php(224): SpecialPage::executePath(Object(Title))
#9 /home/itaka/www/itaka.pw/wikitaka/includes/Wiki.php(55): MediaWiki->initializeSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#10 /home/itaka/www/itaka.pw/wikitaka/index.php(93): MediaWiki->initialize(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#11 {main}

Exception caught inside exception handler: exception 'DBUnexpectedError' with message 'Error in fetchObject(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) (localhost)' in /home/itaka/www/itaka.pw/wikitaka/includes/db/Database.php:739
Stack trace:
#0 /home/itaka/www/itaka.pw/wikitaka/includes/db/Database.php(2624): Database->fetchObject(false)
#1 /home/itaka/www/itaka.pw/wikitaka/includes/LinkBatch.php(98): ResultWrapper->fetchObject()
#2 /home/itaka/www/itaka.pw/wikitaka/includes/LinkBatch.php(78): LinkBatch->addResultToCache(Object(LinkCache), Object(ResultWrapper))
#3 /home/itaka/www/itaka.pw/wikitaka/includes/LinkBatch.php(68): LinkBatch->executeInto(Object(LinkCache))
#4 /home/itaka/www/itaka.pw/wikitaka/includes/Skin.php(208): LinkBatch->execute()
#5 /home/itaka/www/itaka.pw/wikitaka/includes/Skin.php(184): Skin->preloadExistence()
#6 /home/itaka/www/itaka.pw/wikitaka/includes/SkinTemplate.php(106): Skin->initPage(Object(OutputPage))
#7 /home/itaka/www/itaka.pw/wikitaka/skins/MonoBook.php(24): SkinTemplate->initPage(Object(OutputPage))
#8 /home/itaka/www/itaka.pw/wikitaka/includes/SkinTemplate.php(151): SkinMonoBook->initPage(Object(OutputPage))
#9 /home/itaka/www/itaka.pw/wikitaka/includes/OutputPage.php(821): SkinTemplate->outputPage(Object(OutputPage))
#10 /home/itaka/www/itaka.pw/wikitaka/includes/Exception.php(150): OutputPage->output()
#11 /home/itaka/www/itaka.pw/wikitaka/includes/Exception.php(174): MWException->reportHTML()
#12 /home/itaka/www/itaka.pw/wikitaka/includes/Exception.php(260): MWException->report()
#13 /home/itaka/www/itaka.pw/wikitaka/includes/Exception.php(294): wfReportException(Object(DBQueryError))
#14 [internal function]: wfExceptionHandler(Object(DBQueryError))
#15 {main}