The disk pressure on the original etcd is reduced to below 5%, the risk factor is very low, and the cluster shows no anomalies. 1. Deploying the Events Etcd Cluster Events have lower consistency requirements than the main Etcd. Deploying a 3-node cluster is recommended. SSD is recommended for the disk, and the data directory should be kept separate from the main Etcd.

https://github.com/shaowenchen/ops 1. Alerting on Kubernetes Cluster Events Monitor specified keywords 1 2 3 4 5 6 7 8 9 10 11 apiVersion: crd.chenshaowen.com/v1 kind: EventHooks metadata: name: kube-pod-falid namespace: ops-system spec: type: xiezuo url: https://xxx.com/api/v1/webhook/send?key=xxx subject: "ops.clusters.*.namespaces.*.pods.*.event" keywords: - failed A simple configuration like this yields a large number of related alerts.

1. Basic Concepts Django ships with a signal dispatcher built in. Signals help decouple program modules. When an event occurs elsewhere in the application, a designated function is notified. Signals let certain senders notify a group of receivers that some action has taken place. 2. Using Signals 2.1 Declaring a

1. Event Handling Models: Bubbling and Capturing 1 2 3 <div id="outer"> <p id="inner">Click!</p> </div> In the code above, a div element contains a p child element. If both elements have a click handler, how do we know which one will be triggered first? To solve this problem, Microsoft and Netscape proposed two almost completely opposite concepts.