Anton Strukov Savemech

Edit /etc/rc.conf

cloned_interfaces="bridge0 tap0 tap1 tap2 lagg0"
ifconfig_bridge0="addm lagg0 addm tap0 addm tap1 addm tap2"
vm_list="unifi zm1 grafana"

Create a tap for grafana, and add it to the bridge.

ifconfig tap2 create

Usage: node strace_log_analyzer.js strace.log /tmp

This scripts parses input file that must contain strace log from a single thread. Then script calculates:

execution time of read/write syscall for each file descriptor and summarize execution time for each 1 sec period,
calulates amount of read/write syscalls for each file descriptor

strace log must be collcted with -t -T -f options.

Meltdown fix impact on Redis performances in virtualized environments

UPDATE: apparently kernel difference may have a serious impact, so I'll redo the test from scratch.

Test performed with AOF enabled, fsync policy 1 second, allowing the rewrites to be triggered.

Command lines used:

https://stackoverflow.com/questions/48993286/is-it-possible-to-route-traffic-to-a-specific-pod?rq=1

You can guarantee session affinity with services, but not as you are describing. So, your customers 1-1000 won't use pod-1, but they will use all the pods (as a service makes a simple load balancing), but each customer, when gets back to hit your service, will be redirected to the same pod.

Note: always within time specified in (default 10800):

	alias kc='kubectl'
	alias kclf='kubectl logs --tail=200 -f'
	alias kcgs='kubectl get service -o wide'
	alias kcgd='kubectl get deployment -o wide'
	alias kcgp='kubectl get pod -o wide'
	alias kcgn='kubectl get node -o wide'
	alias kcdp='kubectl describe pod'
	alias kcds='kubectl describe service'
	alias kcdd='kubectl describe deployment'
	alias kcdf='kubectl delete -f'

	#!/bin/bash -e
	# Select which Docker version to use on CoreOS with torcx.

	# Specify the available Docker version to enable.
	version=17.09

	# Create modifiable torcx paths if they don't exist already.
	mkdir -p /etc/torcx/profiles /var/lib/torcx/store

	# Download the torcx manifest file for the currently running OS version.

	func main() {
	// Set logging output to standard console out
	log.SetOutput(os.Stdout)

	sigs := make(chan os.Signal, 1) // Create channel to receive OS signals
	stop := make(chan struct{}) // Create channel to receive stop signal

	signal.Notify(sigs, os.Interrupt, syscall.SIGTERM, syscall.SIGINT) // Register the sigs channel to receieve SIGTERM

	wg := &sync.WaitGroup{} // Goroutines can add themselves to this to be waited on so that they finish

	A blood black nothingness began to spin.

	Began to spin.

	Let's move on to system.

	System.

	Feel that in your body.

	---
	- hosts: localhost
	connection: local
	tasks:
	- name: Load containers tags
	include_vars: "{{ item }}"
	with_items:
	- ../kubespray/roles/download/defaults/main.yml
	- ../kubespray/roles/kubernetes-apps/ansible/defaults/main.yml
	- ../var/images.yml

	const i = 'gfudi';
	const k = s => s.split('').map(c => String.fromCharCode(c.charCodeAt() - 1)).join('');
	self[k(i)](urlWithYourPreciousData);