Steps You need to update the requirements.txt to specify the Python modules that are required to deploy the Dataflow jobs using virtualenv in Cloud Shell. Paste the following list of modules into requirements.txt. This list ensures that the correct Python modules will be installed to allow you to deploy the Python…

Scenario You are using nginx and trying to call the downstream application but it returns http 502. Cause The reason could be because SELINUX would have blocked certain port. You can check the logs for more details. Steps The following example is from a sample repo whereby the downstream application uses port 801 and 802. Check the ngnix logs — /var/log/ngnix/error.log From here you will be able to see the error “permission denied”

Steps Navigate to the network interface in EC2 as below. a. Search for the IP address, click on flow logs and destination name. b. Take note of the Network interface ID (eni-xxxxxxx) which you would need in Step 2. 2. On the CloudWatch page, look for the log stream related to the Network interface ID.

Steps Stop Windows Update Services → (Go to run → services.msc → Windows Update) 2. Ensure Firewall is running, else start the Windows Firewall services (Go to run → Services.msc → Windows Firewall)

Ports: TCP: 53, 135, 389, 445 ,464, 636, 3268, 3269, 49152–65535 UDP: 53, 88, 135, 389, 445, 464, 636, 3268, 3269, 123, 137, 138 Purpose of the ports: UDP Port 88 for Kerberos authentication UDP and TCP Port 135 for domain controllers-to-domain controller and client to domain controller operations. TCP Port 139 and UDP 138…

Pipelining Http pipelining is a technique in which multiple http requests are sent on a single TCP connection without waiting for the corresponding responses. Http 1.1 supports pipelining. Only limitation was that server has to maintain the response order as requested by the client. If the client made 3 requests 1…

Steps You can configure test Events, for example — Viewer-Request and Origin-Response that allows you to do unit testing in AWS console. 2. You can dump the entire Event to CloudWatch log by adding the following line in your function→ convert event to json string with 4 space indentation. console.log(‘Received event:’…

Red Hat Enterprise Linux (RHEL) / Amazon Linux Download the latest Qualys Cloud Agent installer from below. https://qualysguard.qualys.com/am/help/sensors/cloud_agent.htm 2. Perform installation with the following command: sudo rpm -ivh qualys-cloud-agent.x86_64.rpm 3. Activate Qualys Cloud Agent with the following command: sudo /usr/local/qualys/cloud-agent/bin/qualys-cloud-agent.sh ActivationId=1032h37-dd20-4fde-93c8-2q3dwedae34 CustomerId=aa9845nb0-6643-5564-8045-1234wsDDAS

Steps Install Docker Desktop for Windows. https://hub.docker.com/editions/community/docker-ce-desktop-windows 2. Install WSL2. https://docs.microsoft.com/en-us/windows/wsl/install-win10 3. Make sure awscli is up to date. https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2-windows.html 4. Run the following command to login to the ECR repo. aws ecr get-login-password --region <aws-region> | docker login --username AWS --password-stdin <ecr-repo-name>