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crazylion lee

FormidableLabs/webpack-dashboard: A CLI dashboard for webpack dev server - 0 views

github.com/...webpack-dashboard

webpack dashboard

shared by crazylion lee on 23 Aug 16 - No Cached
  • crazylion lee on 23 Aug 16
     
    "A CLI dashboard for webpack dev server"
crazylion lee

Cyclotron - 0 views

www.cyclotron.io

dashboard framework development web

shared by crazylion lee on 04 Dec 16 - No Cached
  • crazylion lee on 04 Dec 16
     
    "A web application for constructing dashboards."
crazylion lee

Grafana - Graphite and InfluxDB Dashboard and graph composer - 0 views

grafana.org

graph graphite

shared by crazylion lee on 28 Aug 15 - No Cached
  • crazylion lee on 28 Aug 15
     
    "An open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB."
crazylion lee

cyrus-and/gdb-dashboard - 0 views

github.com/...gdb-dashboard

gdb python

shared by crazylion lee on 02 Oct 15 - No Cached
  • crazylion lee on 02 Oct 15
     
    "Modular visual interface for GDB in Python"
crazylion lee

Riemann - A network monitoring system - 0 views

riemann.io/index.html

monitoring dashboard sysadmin

shared by crazylion lee on 17 Apr 16 - No Cached
  • crazylion lee on 17 Apr 16
     
    "Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. Combine statistics from every Riak node in your cluster and forward to Graphite. Track user activity from second to second."
張 旭

Using Infrastructure as Code to Automate VMware Deployments - 1 views

www.hashicorp.com/...to-automate-vmware-deployments

vmware devops system terraform

shared by 張 旭 on 28 Mar 19 - No Cached
  • Infrastructure as code is at the heart of provisioning for cloud infrastructure marking a significant shift away from monolithic point-and-click management tools.
  • infrastructure as code enables operators to take a programmatic approach to provisioning.
  • provides a single workflow to provision and maintain infrastructure and services from all of your vendors, making it not only easier to switch providers
  • ...5 more annotations...
  • A Terraform Provider is responsible for understanding API interactions between and exposing the resources from a given Infrastructure, Platform, or SaaS offering to Terraform.
  • write a Terraform file that describes the Virtual Machine that you want, apply that file with Terraform and create that VM as you described without ever needing to log into the vSphere dashboard.
  • HashiCorp Configuration Language (HCL)
  • the provider credentials are passed in at the top of the script to connect to the vSphere account.
  • modules— a way to encapsulate infrastructure resources into a reusable format.
  • 張 旭 on 28 Mar 19
     
    "revolutionizing"
張 旭

Glossary - CircleCI - 0 views

circleci.com/glossary

circleci CI system deploy

shared by 張 旭 on 25 Nov 18 - No Cached
  • User authentication may use LDAP for an instance of the CircleCI application that is installed on your private server or cloud
  • The first user to log into a private installation of CircleCI
  • Contexts provide a mechanism for securing and sharing environment variables across projects.
  • ...22 more annotations...
  • The environment variables are defined as name/value pairs and are injected at runtime.
  • The CircleCI Docker Layer Caching feature allows builds to reuse Docker image layers
  • from previous builds.
  • Image layers are stored in separate volumes in the cloud and are not shared between projects.
  • Layers may only be used by builds from the same project.
  • Environment variables store customer data that is used by a project.
  • Defines the underlying technology to run a job.
  • machine to run your job inside a full virtual machine.
  • docker to run your job inside a Docker container with a specified image
  • A job is a collection of steps.
  • The first image listed in config.yml
  • A CircleCI project shares the name of the code repository for which it automates workflows, tests, and deployment.
  • must be added with the Add Project button
  • Following a project enables a user to subscribe to email notifications for the project build status and adds the project to their CircleCI dashboard.
  • A step is a collection of executable commands
  • Users must be added to a GitHub or Bitbucket org to view or follow associated CircleCI projects.
  • Users may not view project data that is stored in environment variables.  
  • A Workflow is a set of rules for defining a collection of jobs and their run order.
  • Workflows are implemented as a directed acyclic graph (DAG) of jobs for greatest flexibility.
  • referred to as Pipelines
  • A workspace is a workflows-aware storage mechanism.
  • A workspace stores data unique to the job, which may be needed in downstream jobs.
張 旭

What's the difference between Prometheus and Zabbix? - Stack Overflow - 0 views

stackoverflow.com/...-between-prometheus-and-zabbix

system monitor php go

shared by 張 旭 on 23 Apr 18 - No Cached
  • Zabbix has core written in C and webUI based on PHP
  • Zabbix stores data in RDBMS (MySQL, PostgreSQL, Oracle, sqlite) of user's choice.
  • Prometheus uses its own database embedded into backend process
  • ...8 more annotations...
  • Zabbix by default uses "pull" model when a server connects to agents on each monitoring machine, agents periodically gather the info and send it to a server.
  • Prometheus prefers "pull" model when a server gather info from client machines.
  • Prometheus requires an application to be instrumented with Prometheus client library (available in different programming languages) for preparing metrics.
  • expose metrics for Prometheus (similar to "agents" for Zabbix)
  • Zabbix uses its own tcp-based communication protocol between agents and a server.
  • Prometheus uses HTTP with protocol buffers (+ text format for ease of use with curl).
  • Prometheus offers basic tool for exploring gathered data and visualizing it in simple graphs on its native server and also offers a minimal dashboard builder PromDash. But Prometheus is and is designed to be supported by modern visualizing tools like Grafana.
  • Prometheus offers solution for alerting that is separated from its core into Alertmanager application.
張 旭

Kubernetes Components | Kubernetes - 0 views

kubernetes.io/...components

kubernetes system

shared by 張 旭 on 17 May 21 - No Cached
  • A Kubernetes cluster consists of a set of worker machines, called nodes, that run containerized applications
  • Every cluster has at least one worker node.
  • The control plane manages the worker nodes and the Pods in the cluster.
  • ...29 more annotations...
  • The control plane's components make global decisions about the cluster
  • Control plane components can be run on any machine in the cluster.
  • for simplicity, set up scripts typically start all control plane components on the same machine, and do not run user containers on this machine
  • The API server is the front end for the Kubernetes control plane.
  • kube-apiserver is designed to scale horizontally—that is, it scales by deploying more instances. You can run several instances of kube-apiserver and balance traffic between those instances.
  • Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for those data.
  • watches for newly created Pods with no assigned node, and selects a node for them to run on.
  • Factors taken into account for scheduling decisions include: individual and collective resource requirements, hardware/software/policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference, and deadlines.
  • each controller is a separate process, but to reduce complexity, they are all compiled into a single binary and run in a single process.
  • Node controller
  • Job controller
  • Endpoints controller
  • Service Account & Token controllers
  • The cloud controller manager lets you link your cluster into your cloud provider's API, and separates out the components that interact with that cloud platform from components that only interact with your cluster.
  • If you are running Kubernetes on your own premises, or in a learning environment inside your own PC, the cluster does not have a cloud controller manager.
  • An agent that runs on each node in the cluster. It makes sure that containers are running in a Pod.
  • The kubelet takes a set of PodSpecs that are provided through various mechanisms and ensures that the containers described in those PodSpecs are running and healthy.
  • The kubelet doesn't manage containers which were not created by Kubernetes.
  • kube-proxy is a network proxy that runs on each node in your cluster, implementing part of the Kubernetes Service concept.
  • kube-proxy maintains network rules on nodes. These network rules allow network communication to your Pods from network sessions inside or outside of your cluster.
  • kube-proxy uses the operating system packet filtering layer if there is one and it's available.
  • Kubernetes supports several container runtimes: Docker, containerd, CRI-O, and any implementation of the Kubernetes CRI (Container Runtime Interface).
  • Addons use Kubernetes resources (DaemonSet, Deployment, etc) to implement cluster features
  • namespaced resources for addons belong within the kube-system namespace.
  • all Kubernetes clusters should have cluster DNS,
  • Cluster DNS is a DNS server, in addition to the other DNS server(s) in your environment, which serves DNS records for Kubernetes services.
  • Containers started by Kubernetes automatically include this DNS server in their DNS searches.
  • Container Resource Monitoring records generic time-series metrics about containers in a central database, and provides a UI for browsing that data.
  • A cluster-level logging mechanism is responsible for saving container logs to a central log store with search/browsing interface.
張 旭

Using Traefik as a reverse proxy | Blog Eleven Labs - 0 views

blog.eleven-labs.com/...ing-traefik-as-a-reverse-proxy

proxy networking

shared by 張 旭 on 15 Apr 22 - No Cached
  • a proxy is associated with the client(s), while a reverse proxy is associated with the server(s); a reverse proxy is usually an internal-facing proxy used as a ‘front-end’ to control and protect access to a server on a private network.
  • the restart: always instruction will allow our reverse-proxy service to restart automatically, on its own.
  • add an [api] section to enable the dashboard and the API
  • ...6 more annotations...
  • double the $ symbols in order to escape the $ symbols as it tries to reference a variable.
  • stay consistent with names inside routers and middlewares.
  • providers.file
  • the service name is always in the form of [service name]@[provider
  • write different routing rules for a service and how to generate SSL certificates
  • traefik.http.services.home.loadbalancer.server.port=8123 indicates that the service port I want to expose is 8123.
  • 張 旭 on 15 Apr 22
     
    "a proxy is associated with the client(s), while a reverse proxy is associated with the server(s); a reverse proxy is usually an internal-facing proxy used as a 'front-end' to control and protect access to a server on a private network."
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