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# Docker installation script for Ubuntu 16.04 (Xenial) on Azure | |
# Usage: execute sudo -i, first. | |
# wget -q -O - "$@" https://gist.githubusercontent.com/tsaqib/9c7c6eed460930b1a14665043bd2157c/raw/ --no-cache | sh | |
# After running the script reboot and check whether docker is running. | |
apt-get update -y | |
apt-get upgrade -y | |
apt-get install -y apt-transport-https ca-certificates | |
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D |
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# Ask for the user password | |
# Script only works if sudo caches the password for a few minutes | |
sudo true | |
# Install kernel extra's to enable docker aufs support | |
# sudo apt-get -y install linux-image-extra-$(uname -r) | |
# Add Docker PPA and install latest version | |
# sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9 | |
# sudo sh -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list" |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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#!/bin/bash | |
echo "Generating an SSL private key to sign your certificate..." | |
openssl genrsa -des3 -out myssl.key 1024 | |
echo "Generating a Certificate Signing Request..." | |
openssl req -new -key myssl.key -out myssl.csr | |
echo "Removing passphrase from key (for nginx)..." | |
cp myssl.key myssl.key.org | |
openssl rsa -in myssl.key.org -out myssl.key |