# Restore MediaWiki ElasticSearch functionality **URL:** \ **Category:** Elasticsearch\ **Created:** [April 6, 2022, 5:21pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786 "2022-04-06T17:21:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![lenhartp](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@lenhartp](https://discuss.elastic.co/u/lenhartp)\ **Post date:** [April 6, 2022, 5:21pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/1 "2022-04-06T17:21:17Z")
A couple months ago, had a mediawiki server with 3 wikis running on it dumped in my lap to support. The search box was using CirrusSearch and Elasticsearch / Elastica to generate results, but that was recently broken when the security team did some sort of log4j remediation. All searches would return "An error has occurred while searching: We could not complete your search due to a temporary problem. Please try again later." So, I removed most traces of CirrusSearch / Elasticsearch and then had the bare-bones MediaWiki search working and of course no longer received the above error. Our server was running back-level MediaWiki (1.30), so I just brought the software up to nearly the latest versions. Centos 7.3.1611 **Versions** MediaWiki - 1.37.2 PHP - 7.4.28 (apache2handler) MySQL - 5.7.20 CirrusSearch - 6.5.4 (70b9a7e) 05:55, 16 March 2022 Elastica - 6.1.3 (c2b259b) 05:46, 19 January 2022 ```auto # yum list installed|grep elastic elasticsearch.noarch 6.8.23-1 @elasticsearch6 elasticsearch-curator.x86_64 5.4.1-1 installed ``` I reenabled CirrusSearch and Elastica in LocalSettings.php, and my Version page shows them as loaded, but while I'm still not getting errors, the search results don't seem like they are enhanced in any way. How can I confirm whether or not I'm actually getting results from Elasticsearch instead of the default built-in search? I suspect I already have my answer in that my attempt to regenerate my Elasticsearch index fails with the response below. So I guess the real question is how do I fix Elasticsearch for my wikis? ```auto # php /data/www/html/wiki/extensions/CirrusSearch/maintenance/UpdateSearchIndexConfig.php Updating cluster ... indexing namespaces... Elastica\Exception\Connection\HttpException from line 190 of /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Transport/Http.php: Couldn't connect to host, Elasticsearch down? #0 /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Request.php(194): Elastica\Transport\Http->exec() #1 /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Client.php(689): Elastica\Request->send() #2 /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Client.php(721): Elastica\Client->request() #3 /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Index.php(586): Elastica\Client->requestEndpoint() #4 /data/www/html/wiki/extensions/Elastica/vendor/ruflin/elastica/lib/Elastica/Index.php(330): Elastica\Index->requestEndpoint() #5 /data/www/html/wiki/extensions/CirrusSearch/includes/MetaStore/MetaStoreIndex.php(501): Elastica\Index->exists() #6 /data/www/html/wiki/extensions/CirrusSearch/includes/MetaStore/MetaStoreIndex.php(165): CirrusSearch\MetaStore\MetaStoreIndex::cirrusReady() #7 /data/www/html/wiki/extensions/CirrusSearch/includes/Maintenance/Maintenance.php(221): CirrusSearch\MetaStore\MetaStoreIndex->createIfNecessary() #8 /data/www/html/wiki/extensions/CirrusSearch/maintenance/IndexNamespaces.php(36): CirrusSearch\Maintenance\Maintenance->maybeCreateMetastore() #9 /data/www/html/wiki/extensions/CirrusSearch/maintenance/UpdateSearchIndexConfig.php(65): CirrusSearch\Maintenance\IndexNamespaces->execute() #10 /data/www/html/wiki/maintenance/doMaintenance.php(108): CirrusSearch\Maintenance\UpdateSearchIndexConfig->execute() #11 /data/www/html/wiki/extensions/CirrusSearch/maintenance/UpdateSearchIndexConfig.php(103): require_once('/data/www/html/...') #12 {main} ``` ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 6, 2022, 10:28pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/2 "2022-04-06T22:28:50Z")
> [@lenhartp](#): > > `Couldn't connect to host, Elasticsearch down?` What does your Elasticsearch config look like? Can you `curl host:9200` and get a response? ---
**Author:** ![lenhartp](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@lenhartp](https://discuss.elastic.co/u/lenhartp)\ **Post date:** [April 6, 2022, 11:12pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/3 "2022-04-06T23:12:02Z")
Thank you Warkolm. Since I took over supporting this server, I've never been able to get that curl test to work. Sadly today is no exception: > **# curl -X GET "localhost:9200"** > curl: (7) Failed connect to localhost:9200; Connection refused There are a few elasticsearch.yml files on the server. They're all either completely commented out or reflect the settings in the file located at /etc/elasticsearch/elasticsearch.yml Here are all the lines that are **not** commented out of that version: > path.data: /var/lib/elasticsearch > path.logs: /var/log/elasticsearch > network.host: 0.0.0.0 ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 7, 2022, 12:41am UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/4 "2022-04-07T00:41:42Z")
What's in `/var/log/elasticsearch/elasticsearch.log`? ---
**Author:** ![lenhartp](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@lenhartp](https://discuss.elastic.co/u/lenhartp)\ **Post date:** [April 7, 2022, 2:44pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/5 "2022-04-07T14:44:07Z")
The log doesn't seem to exist. Perhaps I'm looking at the wrong Elasticsearch.yml file? Searching the server turns up some others, but they are either commented fully out or have the same settings as this one. > # cat /var/log/elasticsearch/elasticsearch.log > > cat: /var/log/elasticsearch/elasticsearch.log: No such file or directory > > # ls -al /var/log/elasticsearch/ > > total 8 > drwxr-s--- 2 elasticsearch elasticsearch 6 Jan 6 14:43 . > drwxr-xr-x. 19 root root 4096 Apr 7 03:15 .. ---
**Author:** ![lenhartp](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@lenhartp](https://discuss.elastic.co/u/lenhartp)\ **Post date:** [April 13, 2022, 5:29pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/6 "2022-04-13T17:29:32Z")
Following all the documentation for Elasticsearch, and for some reason I can't seem to get the service to start, and of course the logs aren't appearing where the configuration is saying they should. Does anybody have some suggestions? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 11, 2022, 5:29pm UTC](https://discuss.elastic.co/t/restore-mediawiki-elasticsearch-functionality/301786/7 "2022-05-11T17:29:42Z")
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