Cloud Devops Automation

  Issue:-  Issue is with the dashboard service. When deploying the Dashboard service using the yaml in the kubernetes it gives the following error. Error:-   Metric client health check failed: the server is currently unable to handle the request (get services dashboard-metrics-scraper). Retrying in 30 seconds. Effect:- Because the dashboard service is not able to connect to the dashboard-metrics-scraper service the UI for the dashboard service is not loading up due to which the Dashboard is not working in the UI and timeout after some time.

Issue:-  When installing the metricserver in the kubernetes getting the following error.  Error:-   Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io) Effect:- Due to the above error the metricserver will not work [centos@kubemaster dashboard]$ kubectl top nodes W0529 10:18:25.234815   13218 top_node.go:119] Using json format to get metrics. Next release will switch to protocol-buffers, switch early by passing --use-protocol-buffers flag Error from server (ServiceUnavailable): the server is currently unable to handle the request (get nodes.metrics.k8s.io)

  Issue:-  If you are having big infrastructure and you have put lot of automation in place than your awscli limits might reach the thresholds which might result in error like. Error:-   An error occurred (Throttling) when calling the DescribeLoadBalancers operation (reached max retries: 4): Rate exceeded Effect:- The command or the script which you have run might failed due to the limit being reached for the calls to the aws resource and retries also exhausted. You might run the command again if you doing it manually and facing error but in case its some script that will cause bigger issue to make the script failed without the retry logic written within the script as well which you have created.

  Issue:-  Issue with the cryptography package and Rust during the Ansible Installation on the Centos. Error:-    Downloading https://files.pythonhosted.org/packages/3d/5f/addb8b91fd356792d28e59a8275fec833323cb28604fb3a497c35d7cf0a3/cryptography-37.0.1.tar.gz (585kB) 100% |████████████████████████████████| 593kB 2.0MB/s Complete output from command python setup.py egg_info: =============================DEBUG ASSISTANCE========================== If you are seeing an error here please try the following to successfully install cryptography: Upgrade to the latest pip and try again. This will fix errors for most users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip =============================DEBUG ASSISTANCE========================== Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-build-nfv80r3s/cryptography/...

  Issue:-  Unable to deploy the visualizer service in the Docker Swarm Error:-    Error response from daemon: invalid MountType: "=bind" Effect:- # docker service create --name=viz --publish=8080:8080/tcp --constraint=node.role==manager --mount=type==bind,src=/var/run/docker.sock,dst=/var/run/docker.sock dockersamples/visualizer Resolution:- # docker service create --name=viz --publish=8080:8080/tcp --constraint=node.role==manager --mount=type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock dockersamples/visualizer Explanation:- You need to use the =bind and not ==bind to solve the problem