Today we had an issue with our Master-Master replication. Master2 was throwing the below error and the replication was stopped Last_SQL_Errno: 145 Last_SQL_Error: Error 'Table './exampledb/exampletable' is marked as crashed and should be repaired' on query. Default database: 'livewbmy_db'. Query: 'INSERT INTO `exampletable` (`challenge`, `response`, `hashkey`, `expiration`) VALUES ('XBUL', 'xbul', 'a9e0f4e3dxxxxxccccccc0c8f8f1', '2016-09-29 21:10:03')' Since its ...
Scenario You have a MySQL Master-Master replication setup, Lets say Master1 (LIVE) and Master2 (DR Warm Standby) Master2 server has been restarted for some reason. Now Master1 LIVE (the slave of DR) slave status is stopped with the below error. Last_IO_Errno: 1236 Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not ...
The much awaited macOS Sierra is now available to Download. Lets see how we can upgrade as soon as possible. Steps Login to your OSX and open App Store. If App Store is not showing the update, just search for “macOS” in App Store. This will take you to the download page and click Get / Download to proceed ...
Native Bash is available now in Windows 10 as Windows 10’s Anniversary Update . Lets see how we can install it. Enable Developer mode in Windows 10 from settings >> Home, or search for Developer Mode from the Windows Menu. Now enable Windows Subsystem For Linux Users from the Turn Windows features on or off menu. Once the installation ...
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 ...
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 ...
