Alex Berber junoteam

Killing supervisor if any of it's child processes fail

The trick is to only register the listener for events that indicate failure, namely

PROCESS_STATE_STOPPED
PROCESS_STATE_EXITED
PROCESS_STATE_FATAL

Once they do, we should send a SIGQUIT to Supervisor.

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

Pattern file: /etc/logstash/patterns/nginx Logstash shipper: /etc/logstash/conf.d/shipper.conf

Nginx http log module: http://nginx.org/en/docs/http/ngx_http_log_module.html

	package main

	import (
	"context"
	"fmt"
	"log"
	"testing"
	"time"

	"github.com/go-redis/redis/v8"

	resource "digitalocean_droplet" "web" {
	image = "ubuntu-16-04-x64"
	name = "web-1"
	region = "sgp1"
	size = "512mb"
	ssh_keys = [12345]

	connection {
	type = "ssh"
	user = "root"

	# webapp-ingress
	apiVersion: networking.k8s.io/v1beta1
	kind: Ingress
	metadata:
	name: webapp
	annotations:
	kubernetes.io/ingress.class: nginx
	# # type of authentication
	# nginx.ingress.kubernetes.io/auth-type: basic
	# # name of the secret that contains the user/password definitions

	# jenkins-ingress
	apiVersion: networking.k8s.io/v1beta1
	kind: Ingress
	metadata:
	name: jenkins
	annotations:
	kubernetes.io/ingress.class: nginx
	# type of authentication
	nginx.ingress.kubernetes.io/auth-type: basic
	# name of the secret that contains the user/password definitions

	apiVersion: v1
	kind: List
	items:
	- apiVersion: v1
	kind: Service
	metadata:
	name: jenkins
	labels:
	app: jenkins
	spec:

	package main

	import (
	"fmt"
	"syscall"
	)

	type DiskStatus struct {
	All uint64 `json:"all"`
	Used uint64 `json:"used"`