Author name: Jobin Joseph

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httpd.service: main process exited kill: cannot find process “”

Today apache was stuck with the below error and it was not starting at all. Sep 15 06:18:24 server.example.com systemd[1]: Starting The Apache HTTP Server… Sep 15 06:18:24 server.example.com httpd[15037]: [Thu Sep 15 06:18:24.591424 2016] [so:warn] [pid 15037] AH01574: module ruid2_module is alread…skipping Sep 15 06:18:33 server.example.com systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE Sep 15 06:18:33 …

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How do I assign a static hostname to a private Amazon EC2 instance running RHEL 7 or Centos 7?

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 …

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Google Discontinuing Chrome Browser Apps on Windows, Mac and Linux

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 …

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Liferay with S3 – The action Create Object in bucket cannot be performed with an invalid bucket: null

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 …

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The path “” is not a valid path to the kernel headers

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. …

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fatal: parameter inet_interfaces: no local interface found for ::1

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 …

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DROWN – Cross-protocol attack on TLS using SSLv2

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 Jobin JosephView all posts by Jobin Joseph hazercloud.com

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