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# one way w/o web interface:
# java -jar lib/playbooks/servers/files/logstash-1.1.1-monolithic.jar agent -f lib/playbooks/servers/files/logstash.conf
# another with a web interface(http://localhost:9292) :
# java -jar lib/playbooks/servers/files/logstash-1.1.1-monolithic.jar agent -f lib/playbooks/servers/files/logstash.conf -- web --backend 'elasticsearch:///?local'
# nc localhost 3333 < logfile
#
# When you are all done, you can delete the 'data' folder to delete the database.

input {
  tcp {

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  # stacktrace java as one message
  multiline {
    #type => "all" # no type means for all inputs
    pattern => "(^.+Exception: .+)|(^\s+at .+)|(^\s+... \d+ more)|(^\s*Caused by:.+)"
    what => "previous"
  }

timoyuen

foo@bar:~$ redis-cli
127.0.0.1:6379> dbsize
(integer) 0
127.0.0.1:6379> set user:1 1
OK
127.0.0.1:6379> set use:the:force luke
OK
127.0.0.1:6379> set non:user a
OK
foo@bar:~$ redis-cli --eval scanregex.lua , "^user"

timoyuen

Working with time in Go is pretty straightforward.

Times

Get the current local time:

now := time.Now()                                   // 02 Apr 15 14:03

Construct a time with Date(y, m, d, h, m, s, ns, loc):

timoyuen

That’s one of the real strengths of Docker: the ability to go back to a previous commit. The secret is simply to docker tag the image you want.

Here’s an example. In this example, I first installed ping, then committed, then installed curl, and committed that. Then I rolled back the image to contain only ping:

$ docker history imagename
IMAGE               CREATED             CREATED BY                SIZE
f770fc671f11        12 seconds ago      apt-get install -y curl   21.3 MB
28445c70c2b3        39 seconds ago      apt-get install ping      11.57 MB
8dbd9e392a96        7 months ago                                  131.5 MB

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development:
  adapter: mysql2
  encoding: utf8
  database: my_database
  username: root
  password:
  apt:
    - somepackage
    - anotherpackage

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development:
  adapter: mysql2
  encoding: utf8
  database: my_database
  username: root
  password:
  apt:
    - somepackage
    - anotherpackage

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UNIX Commands

pwd present working directory

ls list current directory contents

ls -la list current directory contents in long format and show hidden files

man <some unix command> Bring up the manual pages for a command. Type q to exit

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Deploy your site with git

This gist assumes:

• you have a local git repo
• with an online remote repository (github / bitbucket etc)
• and a cloud server (Rackspace cloud / Amazon EC2 etc)
  • your (PHP) scripts are served from /var/www/html/
  • your webpages are executed by apache
• apache's home directory is /var/www/

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apiVersion: v1
kind: Service
metadata:
  name: kube-dns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: "KubeDNS"
spec: