Knowledge Base for IT Professionals, Teachers and Astronauts
On some lean systems, mostly in Docker containers, some important commands are not readily available. The table below shows the command to install them. To get the name of the Linux distribution execute To find the package that contains the command, install apt-file Update the file package mapping database Search for the command at the …
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If you really know one programming language, you can learn others too. The most important part is to understand the concept of computer programming. All languages are built on similar type of instructions, some of them require a semicolon at the end of the line, others don’t. Some of them use curly braces {} to …
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Modern computers don’t have DVD drives anymore. To install Windows on a new system you need to place the Windows installation media on a bootable USB drive. To prepare the bootable USB drive you need a working computer with Windows. Create the bootable USB media Insert an at least 8 GB USB or 8 GB …
Assign a database security role to a Windows security group List the members of a database server group
To connect to an MSSQL database on Macintosh Install the Azure Data Studio Download it from Download and install Azure Data Studio on Windows Install SSMS (SQL Server Management Studio Download it from Download SQL Server Management Studio (SSMS) Install the Azure Data Studio Download it from Download and install Azure Data Studio
To view the final configuration values of the docker-config.yml file after reading the environment variables from .env file, and all variable substitutions are done Make sure the config file in the current directory is named docker-compose.yml Execute
With Portainer we can monitor multiple Docker Swarms from one Portainer Server. To connect an existing Portainer server to an agent Configure the Agent For security reasons, by default, the Portainer Agent only accepts connection from the first Portainer Server it encounters. To enable the Portainer Agent to connect to multiple Portainer Servers, add the …
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The Portainer server restarts every 5 minutes before the admin account is created When the Portainer server starts, waits 5 minutes for a user to create the admin account. If no account created in the first 5 minutes, the server stops with error code 1, message: No administrator account was created after 5 min. Shutting …
The first step of the Chef Test Kitchen converge operation is to transfer the cookbooks to the instance. If any of the cookbooks contain large files, the operation can take minutes while the terminal displays the message Transferring files to < … >
List the Docker Stacks NAME SERVICES ORCHESTRATORsyslog-ng_splunk 3 Swarm List all Docker services List the services of a stack List the services of a stack with the full error message, do not truncate the output