There may be scenarios, when you need to use a custom DNS server for your Instances. So if you are deploying your application on an CentOS 7 on AWS, lets see how can set a custom DNS server such as 8.8.8.8 and 8.8.4.4 Edit the following file, vim /etc/sysconfig/network-scripts/ifcfg-eth0 change the line PEERDNS="yes" to PEERDNS="no" Now, Edit the ...
As a Linux System admin, we always love to work on CentOS and RHEL. In my case i had to launch a CentOS7 instance from the AWS Marketplace again. When we set the hostname with hostnamectl and reboot, yes the Instance comes with the default hostname again. So i have thought of documenting it here, so ...
Chrome launched Chrome apps three years ago. Today, approximately 1% of users on Windows, Mac and Linux actively use Chrome packaged apps, and most hosted apps are already implemented as regular web apps. Google will be removing support for packaged and hosted apps from Chrome on Windows, Mac, and Linux over the next two years. Starting ...
Amazon AWS doesn’t allow root access by default on the OS level. Even though this is for recommended for security purpose, you may need to enable it for some high level operations such as conversion to OVA or VMware etc. Environment Amazon EC2 Ubuntu 10.X (Should work with other linux versions too) How to Open ...
AWS has launched a new Application Load Balancer option on ELB. This option runs at Layer 7 and supports a number of advanced features. The original option is now knon as Classic Load Balancer, is still available to you and continues to offer Layer 4 and Layer 7 functionality. Highlights Layer 7 Load Balancing, ie you ...
Issue You are trying to integrate AWS S3 bucket with your Liferay Application. You have a dedicated IAM user, Access Key, Secret Key for the bucket. You are getting the below error. “ERROR: ” com.liferay.portal.kernel.exception.SystemException: org.jets3t.service.S3ServiceException: The action Create Object in bucket cannot be performed with an invalid bucket: null”” Resolution Makesure the below policy ...
Issue You are trying to install vmware-tools on RHEL / CentOS 7 You are stuck with the below error. The path "" is not a valid path to the 3.10.0-327.el7.x86_64 kernel headers. Solution You have to install the below two packages, kernel-headers and kernel-devel You can run the below command to install those via yum. ...
Issue You are note able to restart / start postfix and getting the below error. fatal: parameter inet_interfaces: no local interface found for ::1 Solution Edit the file /etc/postfix/main.cf vim /etc/postfix/main.cf search for the line inet_interfaces = all And change it to: inet_interfaces = 127.0.0.1, 10.10.11.12 10.10.11.12 is your local IP address :wq! Save and ...
Its the time for another openssl update, Update your openssl and openssl-libs packages with below commands. RHEL / CentOS / OEL (rpm based) yum update openssl Ubuntu / Debian Based (apt based) apt-get update openssl Check your installation at https://drownattack.com For more details : https://access.redhat.com/security/vulnerabilities/drown
Issue how to set hostname persistent across reboots in CentOS 7 / RHEL 7 on AWS ec2 CentOS 7 / RHEL 7 Hostname changes after reboots in aws ec2 Solution Set the hostname with the below command hostnamectl set-hostname hostname.yourdomainname.com Now run the below to change the cloud.cfg echo "preserve_hostname: true" >> /etc/cloud/cloud.cfg Reboot the ...
