nkhine

layout	title	date	categories
post	SELinux and docker notes	2018-02-13 13:13:59 +0200	docker selinux

SELinux and docker notes

What it takes to run our containers with SELinux enabled.

nkhine

# 1. redo last command but as root
sudo !!

# 2. open an editor to run a command
ctrl+x+e

# 3. create a super fast ram disk
mkdir -p /mnt/ram
mount -t tmpfs tmpfs /mnt/ram -o size=8192M

nkhine

```
echo ':golang:E::go::/usr/local/bin/gorun:OC' | sudo tee /proc/sys/fs/binfmt_misc/register
:golang:E::go::/usr/local/bin/gorun:OC
```

```
package main

import (
	"fmt"

nkhine

bash-4.4# ruby-build -v 1.8.7 /usr/local
Downloading ruby-1.8.7.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7.tar.bz2
/tmp/ruby-build.20190128170412.7047 /tmp/ruby-build
Installing ruby-1.8.7...

WARNING: ruby-1.8.7 is past its end of life and is now unsupported.
It no longer receives bug fixes or critical security updates.

/tmp/ruby-build.20190128170412.7047/ruby-1.8.7 /tmp/ruby-build.20190128170412.7047 /tmp/ruby-build

nkhine

Python 2.7.15rc1 (default, Apr 15 2018, 21:51:34) 
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyexcel as p
>>> dict_list=[{'alfa':['001','2'], 'beta':['001','3'], 'gamma':['001','2']},
...     {'alfa':['002','6'], 'beta':['002','4'], 'omega':['002','7']}]
>>> 
>>> s = p.Sheet()
>>> for d in dict_list:
...     s.row += p.get_sheet(adict=d, transpose_after=True)

nkhine

MySQL wizardry
Posted on June 5, 2001
by Giuseppe_Maxia
“I called in the Wizard on a Friday evening. It was almost six p.m. and I was afraid he had already left for the day. Instead, he answered at the first ring. Wizards never go home early. He recognized me and asked how he could help. I told him. He listed patiently, without asking silly questions in between, and finally said ‘I think I could provide you with some useful tool. See you in half an hour’ and hung up.” 

Cross tabulations are statistical reports where you de-normalize your data and show results grouped by one field, having one column for each distinct value of a second field.

Basic problem definition. Starting from a list of values, we want to group them by field A and create a column for each distinct value of field B.

nkhine

jobs

jenkins_url + /api/json?tree=jobs[name,color]

builds

jenkins_url + /job/${job_name}/api/json?tree=builds[number,status,timestamp,id,result]

last build

nkhine

function MyClient() {
    var self = this,
	width = $('#map').width(),
	mapCanvasHeight = (width * 0.45);

  this.init = function() {
    self.drawMap();
    self.drawMarker();
    self.drawArc();
  }

nkhine

### No longer needed as of nginx-1.13.9-1.el7_4.ngx.x86_64.rpm from nginx.org
### it was compiled against OpenSSL 1.0.2 from CentoOS 7.4 so it supports ALPN (HTTP2 works)
### nginx-module-njs-1.13.9.0.1.15-1.el7_4.ngx.x86_64.rpm

yum -y groupinstall 'Development Tools'
yum -y install wget openssl-devel libxml2-devel libxslt-devel gd-devel perl-ExtUtils-Embed GeoIP-devel rpmdevtools

OPENSSL="openssl-1.0.2l"
NGINX_VERSION="1.13.9-1"
NJS_VERSION="1.13.9.0.1.15-1"

nkhine

AWS CLI Cheatsheet

http://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html https://www.youtube.com/watch?v=_wiGpBQGCjU

Setup