Issue Today I was working on a modifying autoscaling group and playing with some options in suspended action. After testing the things, I found that the new instances were not launching even if I haven’t suspended that action. Debug As I checked, I had kept “Terminate” in the suspended action in the Autoscaling Group […]
AWS Autoscaling is not working. Seems stuck Read More »
If you ever get a white page on your WordPress, the best way to troubleshoot is to check the apache error log first. It will have enough information about the issue happening now. In my case, the error was showing as below in the /var/log/httpd/error_log file. PHP Fatal error: Uncaught Error: Call to
WordPress White page error – Call to undefined function imagecreatefromstring Read More »
In this video, we talk about creating a new EC2 instance on AWS with a fresh WordPress installation in just 10 minutes. https://www.youtube.com/watch?v=p9oU7_w7RAA Jobin JosephView all posts by Jobin Joseph hazercloud.com
How to Install WordPress on an AWS EC2 Instance in just 10 Minutes Read More »
Issue After the latest update of Synolofy NAS 6.1, the LDAP integration is no more working. The NAS is throwing error while clicking on the LDAP detected users. Solution NAS >> Domain / LDAP >> LDAP >> Profile >> Filter >> add the below in Shadow Section. objectClass=posixAccount Jobin JosephView all posts by Jobin Joseph
Synology NAS – LDAP Integration issue Read More »
Today we were setting up few Web servers on a private network which will be serving the traffic through the Load Balancer. The setup was simple until we came to know that the Webservers needs to connect to github.com for the repository access. Diagnosis We have a jumpbox / Bastion (10.10.1.10) which is used for
SSH or git-clone via Proxy Read More »
Today i was installing Jenkins on a CentOS7 systems. After installing it via Jenkins yum repository, the service was not stating. The java was already installed on the server. Issue You have installed jenkins on a CentOS7 / RHEL7 system. jenkins is not starting via systemctl start jenkins command, and it is throwing journalctl -xn error. Caused
Jenkins not starting on CentOS 7 / RHEL 7 Read More »
Some times you need to disable sudo su – access on your environment so that the users will use sudo command always and they will not switch to any other users account unnecessarily Lets see how to do it Edit the /etc/suoders by running visudo visudo Add the below Command Alias Cmnd_Alias BLOCKSU = /bin/su
Disable SU access for sudo users Read More »
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
How to set custom DNS on CentOS7 AWS Read More »
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
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
EC2 Ubuntu – Allow SSH root login with Password Read More »
