No alive nodes found in your cluster

[FredrikLodon]

Summary of problem or feature request

I have a strange scenario. I have two test environments which my configuration works flawless. But in my live environment I get the "No alive nodes found in your cluster" message.

So this is my two test environments which Elastic Cloud works great.

1. VB-Ubuntu, setup:

• Ubuntu 16.04
• PHP 7.1.22-1+ubuntu16.04.1+deb.sury.org+1
• PHP7.1-curl
• Elasticsearch-php v6.0.1
  Note: Above works flawless - return desired result - both from the code itself and by "curl https://username:pass@myadress" from terminal.

2. MAMP

• MAMP under OSX
• php7.2.1
• curl7.52.1
• Elasticsearch-php v6.0.1
  Note: Above works flawless - return desired result - both from the code itself and by "curl https://username:pass@myadress" from terminal.

This is the live-host, which the problem occurs
3. The-trouble-host

• Debian 8.11
• PHP 7.1.22-1+020181001133629.6+jessie1.gbp113f3b
• PHP7.1-curl
• Elasticsearch-php v6.0.1
  Note: This is my prod-server. Which returns the error below, Im using row breaks to get it a little bit more clear to look at:

[Fri Oct 05 16:39:28.787535 2018]
[proxy_fcgi:error]
[pid 17303:tid 139723339167488]
[client 85.225.129.215:50158]
AH01071:
Got error 'PHP message: PHP Fatal error:
Uncaught Elasticsearch\Common\Exceptions\NoNodesAvailableException:
No alive nodes found in your cluster in /srv/www.xxxx.xxxx/htdocs/wp-content/plugins/xxxxxxxx/vendor/elasticsearch/elasticsearch/src/Elasticsearch/ConnectionPool/StaticNoPingConnectionPool.php:51
\nStack trace:\n#0 /srv/www.xxxxx.xxx/htdocs/wp-content/plugins/xxxxx/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Transport.php(76):
Elasticsearch\ConnectionPool\StaticNoPingConnectionPool->nextConnection()\n#1 /srv/www.xxxx.xxx/htdocs/wp-content/plugins/xxxxx/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Transport.php(94):
Elasticsearch\Transport->getConnection()\n#2 /srv/www.xxxxx.xxxx/htdocs/wp-content/plugins/xxxxx/vendor/elasticsearch/elasticsearch/src/Elasticsearch/Connections/Connection.php(246):
Elasticsearch\Transport->performRequest('GET', '/elasticxxxs...', Array, '{"query":{"matc...', Array)\n#3 /srv...\n', referer: https://www.xxxx.xxxx/search/?find=razor

How come I get this problem on this setup?

[FredrikLodon]

Im still troubleshooting this and have figured that if this error can come up if some sort of port is blocking the connection? Although this is a long-shot, I cant figure out why Im having this problem on the "3. The-trouble-host".

[nclavaud]

Did you try the curl command on the faulty host ?

[gamelife1314]

Did you set proxy environment (http_proxy, https_proxy) ?

[benanderton]

I came across a similar issue regarding the hostname, please see #509 (comment)

[PutziSan]

In my case it was a problem with SSL certificates (on windows). This SO response describes the solution:

1. download an official cacert.pem from https://curl.haxx.se/docs/caextract.html and save it where you want
2. add curl.cainfo = "C:\your\path\cacert.pem" to your php.ini

[ezimuel]

@FredrikLodon I'm closing this issue, I'll reopen if still relevant.