hafeez-syed

Edit '/etc/sysconfig/jenkins' and add 'prefix=/jenkins' to 'JENKINS_ARGS'
**************************************************************************
JENKINS_ARGS="--prefix=/jenkins"


Comment out the default server config in '/etc/nginx/nginx.conf'
and create following file

'/etc/nginx/conf.d/domain.conf'
*************************************************

kekru

• Open a webpage that uses the CA with Firefox
• Click the lock-icon in the addressbar -> show information -> show certificate
• the certificate viewer will open
• click details and choose the certificate of the certificate-chain, you want to import to CentOS
• click "Export..." and save it as .crt file
• Copy the .crt file to /etc/pki/ca-trust/source/anchors on your CentOS machine
• run update-ca-trust extract
• test it with wget https://thewebsite.org

wxdao

#include <netinet/in.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/kern_control.h>
#include <net/if_utun.h>
#include <sys/ioctl.h>
#include <sys/kern_event.h>

int open_utun(int num) {
	int err;

sebastianwebber

Uber facts

Original posts/information

Migrating Uber from MySQL to PostgreSQL

Key points

• ~50GB MySQL Application
• Main motivation: PostGis
• Migration made with a custom tool(xml2pgcopy) and mysqldump on 45min

taoyuan

# npm using https for git
git config --global url."https://github.com/".insteadOf [email protected]:
git config --global url."https://".insteadOf git://

# npm using git for https
git config --global url."[email protected]:".insteadOf https://github.com/
git config --global url."git://".insteadOf https://

kmassada

Libvirt

yum group install -y "Development Tools"
yum -y install qemu-kvm libvirt virt-install bridge-utils libvirt-devel  libxslt-devel libxml2-devel libvirt-devel libguestfs-tools-c

echo "net.ipv4.ip_forward = 1"|sudo tee /etc/sysctl.d/99-ipforward.conf
sysctl -p /etc/sysctl.d/99-ipforward.conf

nerdalert

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

140am

""" Simple IPC benchmark test

Test throughput of 512 KB messages sent between two python processes using:

- multiprocessing pipe
- zeroMQ PUSH/PULL
- zeroMQ DEALER/DEALER

Result:

yuanying

Install Vagrant

sudo su
apt-get update && apt-get install -y libvirt-dev ruby-all-dev apparmor-utils
curl -O -L https://dl.bintray.com/mitchellh/vagrant/vagrant_1.6.5_x86_64.deb
dpkg -i vagrant_1.6.5_x86_64.deb 
aa-complain /usr/lib/libvirt/virt-aa-helper # workaround
exit

Install vagrant-kvm as user

lhaagsma

# Matching 'SSL SERVER HELLO' packets using IPtables
# Using some connection tracking to make sure not 
# to match randomly in the middle of some huge SSL 
# session. 

iptables --insert INPUT -p tcp --sport 443 \
  -m connbytes --connbytes-mode bytes --connbytes-dir both --connbytes 0:500 \
  -m state --state ESTABLISHED \
  -m length --length 46:375 \
  -m u32 --u32 "\