how to move elasticsearch data from one server to another

npm install -g elasticdump elasticdump --input= --output= --type=mapping elasticdump --input= --output= --type=data

More details over at:


Jenkins on Ubuntu

Before we can install Jenkins, we have to add the key and source list to apt. This is done in 2 steps, first we’ll add the key.

wget -q -O - | apt-key add -

Secondly, we’ll create a sources list for Jenkins.

echo deb binary/ > /etc/apt/sources.list.d/jenkins.list
apt-get update
apt-get install jenkins

Now that Jenkins is running, go to You’ll be welcomed by the default Jenkins screen.

CURL request on a self-signed SSL certificate API

When we are using cURL to retrieve a HTTPS site that is not using a CA-signed certificate, the following problem occurs.

SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed More details here:
To overcome this issue, follow the below steps

You might like to backup /etc/ssl/certs before executing the command.


Check ssl path in OS

:~# openssl version -d
 OPENSSLDIR: "/usr/lib/ssl" 

:~# cd /usr/lib/ssl && ls -al

:~# /usr/lib/ssl# cd certs

Change to /usr/share/ca-certificates directory and add you self-signed certificate there, (ex:

:~# cd /usr/share/ca-certificates cp or create the crt/pem file here Change to /etc directory and edit the file ca-certificates.conf.

:~# cd /etc 
:~# nano ca-certificates.conf 

Add to the file (ca-certificates.conf) and save it.

Execute the program update-ca-certificates --fresh.

:~# update-ca-certificates --fresh
you would have something like below
 Clearing symlinks in /etc/ssl/certs...done. Updating certificates in /etc/ssl/certs....done. Running hooks in /etc/ca-certificates/update.d....done.

Test with curl on your target HTTPS site and it should work now.

AWS SDK V3 – S3 signed url – Laravel

$s3Client = \App::make(‘aws’)->createClient(‘s3’);
$bucket =[bucket name];
$key = [file name];
$command = $s3Client->getCommand(‘GetObject’, array(
‘Bucket’ => $bucket,
‘Key’ => $key,
‘ResponseContentDisposition’ => ‘attachment; filename="’.$key.’"’,
$request = $s3Client->createPresignedRequest($command, ‘+10 minutes’);
$signedUrlCannedPolicy = (string) $request->getUri();
echo "singed s3 url =>".$signedUrlCannedPolicy;

Note : you should have configured the s3 access key and secret key in config/aws.php