nkhine

FreeBSD 10 Nodejs setup with nginx, mongodb, redis and monit

This my receipe for installing a complete nodejs server on FreeBSD 10. The parameters used in this configuration are for a very small private server that I use for demo purpose only, so for a production server, you should somehow set the limits in pair with your ressources.

I use monit so I don't have to write rc scripts for node and it should take care of process lifecycle management for me. Alternatives exists such as supervisord or circus.

Installing mongodb

nkhine

1) Load the u3g(4) driver:

# kldload u3g
# kldstat
Id Refs Address            Size     Name
 ...
 7    1 0xffffffff81b6e000 5ffb     u3g.ko

2) Set the driver to load at boot:

nkhine

# WARNING - THIS IN NOT a SHELL SCRIPT - JUST a LIST of COMMANDS
# based on https://github.com/coreos/coreos-overlay/issues/595 with links updated

# Build cifs-utils in a container and copy it into /tmp on the host.
$docker run -t -i -v /tmp:/host_tmp fedora /bin/bash
# On the container bash prompt
yum groupinstall -y "Development Tools" "Development Libraries"
yum install -y tar
yum install -y bzip2
curl http://ftp.samba.org/pub/linux-cifs/cifs-utils/cifs-utils-6.3.tar.bz2 | bunzip2 -c - | tar -xvf -

nkhine

$ sudo -i
# vim /etc/systemd/system/disable-transparent-huge-pages.service
# systemctl enable disable-transparent-huge-pages
# systemctl start disable-transparent-huge-pages
# systemctl status disable-transparent-huge-pages
# cat /sys/kernel/mm/transparent_hugepage/enabled
# cat /sys/kernel/mm/transparent_hugepage/defrag

nkhine

AWSTemplateFormatVersion: '2010-09-09'
Description: Cognito Stack
Parameters:
  AuthName:
    Type: String
    Description: Unique Auth Name for Cognito Resources

Resources:

  # Creates a role that allows Cognito to send SNS messages

nkhine

AWS CLI Cheatsheet

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

Setup

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

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

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

nkhine

#! /bin/sh
### BEGIN INIT INFO
# Provides: vpnclient
# Required-Start: $all
# Required-Stop: $network $local_fs $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start VPN Client at boot time
# chkconfig: 345 44 56
# description: Start VPN Client at boot time.