The stopped Docker containers are still available for troubleshooting. You can create an image of them and run them as new containers to inspect the log files and execute commands in them. View the standard output of the failed container Run a failing container with a Bash terminal If a container exists with an error […]
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Splunk troubleshooting
Universal Forwarder SSH into the server running the Universal Forwarder To verify if the forwarding is configured
Docker Swarm Commands
Create a service with an image in a private registry These instructions will pass the login token from your local client to the Docker Swarm nodes, so those are able to log into the registry and pull the image.
Configure Visual Studio Code
Only tab should accept the suggestion To force Visual Studio Code to only insert the suggested word with the Tab key, and configure the Enter key to always insert a new line Open the settings page with Command-, Search for tab Set the Editor: Accept Suggestion On Enter to off This enters “editor.acceptSuggestionOnEnter”: “off” into […]
You must specify a region. You can also configure your region by running “aws configure”.
When we execute an AWS CLI command, we need to supply the AWS Region. If it is not specified, we get the error message: You must specify a region. You can also configure your region by running “aws configure”. We can add the region with the –region command line argument, or store it in the […]
Docker commands
To delete all containers, execute docker rm -f $(docker ps -a -q) To delete all images, execute docker rmi -f $(docker images -q)
Supported Golang GOOS and GOARCH combinations
To get the list of supported GOOS (operating system) and GOARCH (architecture) combinations execute go tool dist list To specify the GOOS and GOARCH attributes in the Bash command line, build the Golang application with GOOS=linux GOARCH=amd64 go build -v -o MY_APP cmd/MY_APP/*.go
x509: certificate signed by unknown authority
I have built a Docker container with a Go application that used the Go AWS SDK. When my program tried to access an S3 bucket I got the error message RequestError: send request failedcaused by: Get https://MY_BUCKET_NAME.s3.amazonaws.com: x509: certificate signed by unknown authority To solve the problem I had to add the following line to […]
Docker for Windows cannot start: “Hardware assisted virtualization and data execution protection must be enabled in the BIOS”
To start Docker on Windows, Hyper-V and the Hypervisor has to be enabled on Windows. Start a PowerShell window as administrator Enable Hyper-V dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All Enable the Hypervisor bcdedit /set hypervisorlaunchtype auto Restart the computer
List the Active Directory groups the user is a member of
To list the Active Directory groups where the current user is a member, execute in the PowerShell window To get the Active Directory groups for another user, replace THE_USER_NAME with the Active directory user name of the person. (New-Object System.DirectoryServices.DirectorySearcher(“(&(objectCategory=User)(samAccountName=THE_USER_NAME))”)).FindOne().GetDirectoryEntry().memberOf