When a file is saved with BOM (byte-order mark) on a Mac or Linux machine Windows PowerShell cannot execute the script. Unfortunately the “cat” command does not show the byte-order mark at the beginning of the file. Some editors show a question mark at the beginning of the file. I have discovered it when I […]
Tag Archives: DevOps
Clear cookies and site data of one site in Chrome
Some sites do not load properly when old cached data is stored in the web browser. To clear the cached images, cookies and other site related data for one specific site in Chrome Start Chrome The quick and easy way Navigate to chrome://settings/siteData In the upper right corner search for the site name Click the […]
Find blocking queries in MSSQL
To find queries that block others in Microsoft SQL databases, execute This returns the list of active sessions and indicates what session blocked it. To get the query of a session, execute
MSSQL database migration to another database server
When a database is migrated to another server by copying the database file or restoring it from a backup file, the original database user account references are also carried with it. Those accounts contain the account IDs specific to the original database server. To provide access to the restored database on the new database server […]
RuntimeError: Volume vol-… attached at xvdf but does not conform to this resource’s specifications
When the Chef aws cookbook’s ebs_volume.rb resource tries to bring a volume online, partition, and format it we get the error message: RuntimeError: Volume vol-… attached at xvdf but does not conform to this resource’s specificationsC:/chef/cache/cookbooks/aws/resources/ebs_volume.rb:46:in `block in class_from_file’ Make sure the “size” attribute value in the aws_ebs_volume resource call matches the actual size of […]
The installation of this package failed
When we tried to install the Microsoft Access Database Engine and Office 2007 System Driver on a Windows Server 2016 an error message popped up immediately: The installation of this package failed When we ran the installation with the logging option, we have found a message at the bottom of the file: Will create the […]
Invoke-WebRequest : The request was aborted: Could not create SSL/TLS secure channel.
Older PowerShell versions do not use TLS1.2 as the default version during the SSL handshake. When the API requires TLS1.2 the rrror message appears: Invoke-WebRequest : The request was aborted: Could not create SSL/TLS secure channel. To force PowerShell to use TLS1.2 during the SSL handshake, issue this command before executing the Invoke-Webrequest
Extend a Linux partition
When the Linux disk drive is full, first we need to identify the reason for the drive overuse. Many times the drive is filled with one large log file, that can be identified and truncated. To list the directory sizes under the current directory execute To empty a file, overwrite it with nothing, so the […]
Blue-green deployment in AWS ECS Fargate with CodeDeploy
We will use CodeDeploy to automate the application deployment in our AWS ECS Fargate cluster. Create an AIM role for CodeDeploy to assume the ECS service role In the AWS console navigate IAM and click the Roles link Click the Create role button Click the CodeDeploy link Select CodeDeploy ECS Keep the default setting Enter […]
Host the server container in an AWS ECS Fargate cluster
We have already created a Docker image for the server using Nginx. We will create an AWS ECS Fargate cluster in AWS and host the container there. Create an ECR repository for the image Select the Elastic Container Registry Create a new repository Enter a name, enable Tag immutability and Scan on push Select the repository you just […]