By default Amazon EC2 only allow port 22 (SSH) on Linux servers and port 3389 (RDP) on Windows Instances. All other ports are closed for security reasons. Depending on your use case, you may need to open ports on the security group to allow connection to applications you run on the EC2 instance. Log in … Read more
To white list an IP in Amazon AWS security group using aws command line tool, run aws ec2 authorize-security-group-ingress –group-id SECURITY_GROUP_ID_HERE –protocol tcp –port PORT_HERE –cidr IP_IN_CIDR_HERE Example aws ec2 authorize-security-group-ingress –group-id sg-a777eee6 –protocol tcp –port 443 –cidr 94.31.33.128/27
To enable CORS for Amazon S3 bucket, add * PUT POST DELETE 1800 *
Once you resize the disk in the Amazon AWS console, it gets auto resized on reboot. Sometimes this won’t happen, you have to manually resize the disk. Resize EC2 file system with LVM To resize the disk, do the following. 1) Take a snapshot of the disk 2) Create a new server in the same … Read more
To verify Apache module is loaded, run [root@ip-172-31-29-220 ~]# apachectl -M | grep deflate deflate_module (shared) [root@ip-172-31-29-220 ~]# Create file vi /etc/httpd/conf.d/gzip.conf Add following content # Restrict compression to these MIME types AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE application/xhtml+xml AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE application/xml AddOutputFilterByType DEFLATE application/xml+rss AddOutputFilterByType DEFLATE application/x-javascript AddOutputFilterByType DEFLATE … Read more
Install postfix with apt-get update && apt-get install postfix libsasl2-modules -y Update postfix config with sed -i “s/default_transport = error/# default_transport = error/g” /etc/postfix/main.cf sed -i “s/relay_transport = error/# relay_transport = error/g” /etc/postfix/main.cf sed -i “s/relayhost =/# relayhost =/g” /etc/postfix/main.cf Edit vi /etc/postfix/main.cf Add to end of the file relayhost = [SMTP_SERVER_NAME]:587 smtp_tls_security_level = encrypt … Read more
Disk read/write speed in Amazon EFS depends on how much data you have on the file system. Amazon EFS have something called BurstCreditBalance, that shows much much data balance you have available. Initially all file system have some 2 TB Burst credit, this is is for you to copy data. If you don’t copy dummy … Read more
awscli is a command line tool for Amazon AWS. To install, run Create a virtual environment and activate it Install awscli with pip You can find more details at https://docs.aws.amazon.com/cli/latest/reference Once installed, you need to configure it aws configure To sync content of a folder to Amazon S3 bucket, run Whitelist IP in AWS security … Read more
When your cpanel server is behind nat, for example Amazon EC2 where you have an internal IP and External IP. Go to Home > Server Configuration> Basic WebHost Manager® Setup Enter your servers internal IP where it ask for “The IPv4 address (only one address) to use to set up shared IPv4 virtual hosts.”. Now … Read more
When assigning Elastic IP in Amazon AWS, I get an error The maximum number of addresses has been reached. This is because Amazon only allows 5 Elastic IP address per region. You can see the AWS service limits at http://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html You can open a support ticket with Amazon, they will increase the Elastic IP limit. … Read more