SysAdmin

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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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

CentOS 7 / RHEL 7 – AWS ec2 – how to set hostname persistent across reboots

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 …

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OpenSSH – Information-leak vulnerability (CVE-2016-0777)

Vulnerability Since version 5.4, the OpenSSH client supports an undocumented feature called roaming. If a connection to an SSH server breaks unexpectedly, and if the SSH server supports roaming as well, the client is able to reconnect to the server and resume the interrupted SSH session. The roaming feature is enabled by default in OpenSSH …

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CentOS / RHEL – 7 How to set hostname permanently

Issue How to set hostname in CentOS-7 / RHEL-7 persistent across reboots. – I have changed /etc/hostname and it changes after reboot. Solution In CentOS / RHEL-7 you need to use the hostnamectlcommand line tool to update the hostname – To set the hostname permanently, issue the below command, hostnamectl set-hostname server1.jobnix.in To view the …

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Git doesn’t work after upgrading Mac OS X El Capitain

Issue – Git doesn’t work after upgrading Mac OS to X El Capitain – Output when you run git xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun Solution – run the following command as a user xcode-select –install – This will pop-up a window and continue with it. – Once finished, run …

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