Using cadvisor to get a peek to Docker

You may use the Docker stats API to get some basic information from docker.

Try the following to get a json output:

curl -s –unix-socket /var/run/docker.sock http://localhost/containers/json | python -m json.tool

To get data for a single container:

curl -s –unix-socket /var/run/docker.sock http://localhost/containers/c101546a3690/json | python -m json.tool

Pros: simple
Cons: no aggregation, no visualization.

To take it to the next level, give cAdvisor a shot: it taps the Docker API, and gives you a visual and historical data what’s going on inside Docker. cAdvisor runs as a docker container:

docker run \
–volume=/:/rootfs:ro \
–volume=/var/run:/var/run:rw \
–volume=/sys:/sys:ro \
–volume=/var/lib/docker/:/var/lib/docker:ro \
–publish=8080:8080 \
–detach=true \
–name=cadvisor \
google/cadvisor:latest

Then simply visit http://127.0.0.1:8080

Pros: visual
Cons: limited timeframe, limited metrics

You may also want to put these data to a time series database, eg. InfluxDB or similar, and visualize it with Grafana providing even better visuality and better history.

Or you may give chance to sysdig to provide much more. See https://dzone.com/storage/assets/9981079-dzone-refcard236-dockermonitoring.pdf for more on the topic.

Retire your old stuff with retire.js

I’ve stumbled in an article on dzone 5 Quick Wins for Securing Continuous Delivery mentioning a javascript library to scan the given webpage for security vulnerabilities using retire.js. Note that it has an addon for Firefox and Chrome as well.

So I’ve installed the firefox addon, and for the good. Because I just learned the terrible truth: jquery versions 1.x and 2.x have some unfixed issues.

So I’ve updated the piler enterprise configs to use the most recent versions of jquery and other js libs from CDN networks, and now the addon is happy for piler enterprise GUI.

It’s actually a new config option, called JS_CODE in config.php, so you are able to fix it to use local versions of the used js libraries if your users are on a network without access to the Internet.

How to increase the rep counts of any exercise?

If your goal is to improve – let’s say – your push up reps, then look no further. I give you two methods.

#1: Repetitions over time

Set a timer between 5-10 min, and do as many push ups as you can. Rest as needed, then record your total reps.

Your goal: try to beat your score the next time you do it.

#2: Reach a specific amount of reps

Your target is 4-5x your max reps. Let’s say, you can do 20 push ups, then your target is 100. So do 100 total push ups, rest as needed, and record the time you needed to reach 100 total push ups.

Your goal: try to beat your time the next time you do it.

Do 3-5x per week.


Source: Increase Your Repetitions – Pull Ups – Push Ups – Dips…..