Debian Release Code Names - Aide Mémoire

The name series for Debian releases is taken from characters in the Pixar/Disney film Toy Story.

Sid

The unstable release is always called Sid as the character in the film took delight in breaking his toys.

A backronym: Still In Development.

Stretch

The current pending release is always called testing and will have been christened. At the time of writing the testing release is Stretch.

Jessie

Release 8.0

2015/04/26

Jessie is the current stable release.

After a considerable while a release will migrate from testing to stable, it will then become the Current Stable release and the previous version will join the (head) of the list of Obsolete Stable releases.

Wheezy

Release 7.0

2013/05/04

The current head of the list of Obsolete Stable releases.

Squeeze

Release 8.0

2011/02/06

Obsolete Stable release.

Lenny

Release 5.0

2009/02/14

Obsolete Stable release.

Etch

Release 4.0

2007/04/08

Obsolete Stable release.

Sarge

Release 3.1

2005/06/06

Obsolete Stable release.

Woody

Release 3.0

2002/07/19

Obsolete Stable release.

Potato

Release 2.2

2000/08/15

Obsolete Stable release.

Slink

Release 2.1

1999/03/09

Obsolete Stable release.

Hamm

Release 2.0

1998/07/24

Obsolete Stable release.

Bo

Release 1.3

1997/06/05

Obsolete Stable release.

Rex

Release 1.2

1996/12/12

Obsolete Stable release.

Buzz

Release 1.1

1996/06/17

Obsolete Stable release.

Previous versions did not have versions.

Groovy: Baby Steps

Posting a form in groovy, baby steps. Derived from http://coderberry.me/blog/2012/05/07/stupid-simple-post-slash-get-with-groovy-httpbuilder/

@Grab(group='org.codehaus.groovy.modules.http-builder', module='http-builder', version='0.7' )
@Grab(group='org.codehaus.groovyfx', module='groovyfx', version='0.3.1')
import groovyx.net.http.HTTPBuilder
import groovyx.net.http.ContentType
import groovyx.net.http.Method
import groovyx.net.http.RESTClient

public class Post {

  public static void main(String[] args) {

    def baseUrl = "http://www.paneris.org/pe2/org.paneris.user.controller.LoginUser"

    def ret = null
    def http = new HTTPBuilder(baseUrl)

    http.request(Method.POST, ContentType.TEXT) {
      //uri.path = path
      uri.query = [db:"paneris", 
                  loginid:"timp", 
                  password:"password"]
      headers.'User-Agent' = 'Mozilla/5.0 Ubuntu/8.10 Firefox/3.0.4'

      response.success = { resp, reader ->
          println "response status: ${resp.statusLine}"
          println 'Headers: -----------'
          resp.headers.each { h ->
            println " ${h.name} : ${h.value}"
          }

          ret = reader.getText()

          println '--------------------'
          println ret
          println '--------------------'
      }
    }
  }
}

Delete Jenkins job workspaces left after renaming

When renaming a job or moving one from slave to slave Jenkins copies it and does not delete the original. This script can fix that.

#!/usr/bin/env python
import urllib, json, os, sys
from shutil import rmtree
 
url = 'http://jenkins/api/python?pretty=true'
 
data =  eval(urllib.urlopen(url).read())
jobnames = []
for job in data['jobs']:
    jobnames.append(job['name'])
 
def clean(path):
  builds = os.listdir(path)
  for build in builds:
    if build not in jobnames:
      build_path = os.path.join(path, build)
      print "removing dir: %s " % build_path
      rmtree(build_path)
 
clean(sys.argv[1])

Merging two sets of Jacoco Integration Test Coverage Reports for Sonar using Gradle

In a Jenkins build:

./gradlew cukeTest
./gradlew integTest
./gradlew sonarrunner

This leaves three .exec files behind. SonarQube can only use two. So we merge the two integration tests results.

task integCukeMerge(type: JacocoMerge) {
  description = 'Merge test code coverage results from feign and cucumber'
  // This assumes cuketests have already been run in a separate gradle session

  doFirst {
    delete destinationFile
    // Wait until integration tests have actually finished
    println start.process != null ? start.process.waitFor() : "In integCukeMerge tomcat is null"
  }

  executionData fileTree("${buildDir}/jacoco/it/")

}


sonarRunner {
  tasks.sonarRunner.dependsOn integCukeMerge
  sonarProperties {
    property "sonar.projectDescription", "A legacy codebase."
    property "sonar.exclusions", "**/fakes/**/*.java, **/domain/**.java, **/*Response.java"

    properties["sonar.tests"] += sourceSets.integTest.allSource.srcDirs

    property "sonar.jdbc.url", "jdbc:postgresql://localhost/sonar"
    property "sonar.jdbc.driverClassName", "org.postgresql.Driver"
    property "sonar.jdbc.username", "sonar"
    property "sonar.host.url", "http://sonar.we7.local:9000"


    def jenkinsBranchName = System.getenv("GIT_BRANCH")
    if (jenkinsBranchName != null) {
      jenkinsBranchName = jenkinsBranchName.substring(jenkinsBranchName.lastIndexOf('/') + 1)
    }
    def branch = jenkinsBranchName ?: ('git rev-parse --abbrev-ref HEAD'.execute().text ?: 'unknown').trim()

    def buildName = System.getenv("JOB_NAME")
    if (buildName == null) {
      property "sonar.projectKey", "${name}"
      def username = System.getProperty('user.name')
      property "sonar.projectName", "~${name.capitalize()} (${username})"
      property "sonar.branch", "developer"
    } else {
      property "sonar.projectKey", "$buildName"
      property "sonar.projectName", name.capitalize()
      property "sonar.branch", "${branch}"
      property "sonar.links.ci", "http://jenkins/job/${buildName}/"
    }

    property "sonar.projectVersion", "git describe --abbrev=0".execute().text.trim()

    property "sonar.java.coveragePlugin", "jacoco"
    property "sonar.jacoco.reportPath", "$project.buildDir/jacoco/test.exec"
    // feign results
    //property "sonar.jacoco.itReportPath", "$project.buildDir/jacoco/it/integTest.exec"
    // Cucumber results
    //property "sonar.jacoco.itReportPath", "$project.buildDir/jacoco/it/cukeTest.exec"
    // Merged results
    property "sonar.jacoco.itReportPath", "$project.buildDir/jacoco/integCukeMerge.exec"

    property "sonar.links.homepage", "https://github.com/${org}/${name}"
  }
}

Remember to use Overall Coverage in any Sonar Quality Gates!

An SSL Truster

Should you wish, when testing say, to trust all ssl certificates:

import java.net.URL;

import javax.net.ssl.*;

import com.mediagraft.shared.utils.UtilsHandbag;

/**
 * Modify the JVM wide SSL trusting so that locally signed https urls, and others, are
 * no longer rejected.
 *
 * Use with care as the JVM should not be used in production after activation.
 *
 */
public class JvmSslTruster {

  private static boolean activated_;

  private static X509TrustManager allTrustingManager_ = new X509TrustManager() {

    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
      return null;
    }

    public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
    }

    public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
    }
  };

  public static SSLSocketFactory trustingSSLFactory() {
    SSLContext sc = null;
    try {
      sc = SSLContext.getInstance("SSL");
      sc.init(null, new TrustManager[]{allTrustingManager_}, new java.security.SecureRandom());
      new URL(UtilsHandbag.getSecureApplicationURL()); //Force loading of installed trust manager
    }
    catch (Exception e) {
      throw new RuntimeException("Unhandled exception", e);
    }
    return sc.getSocketFactory();
  }

  public static void startTrusting() {
    if (!activated_) {
      HttpsURLConnection.setDefaultSSLSocketFactory(trustingSSLFactory());
      com.sun.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(trustingSSLFactory());
      activated_ = true;
    }
  }

  private JvmSslTruster() {
  }
}

Restoring user groups once no longer in sudoers

Ubuntu thinks it is neat not to have a password on root. Hmm.

It is easy to remove yourself from all groups in linux, I did it like this:

$ useradd -G docker timp

I thought that might add timp to the group docker, which indeed it does, but it also removes you from adm,cdrom,lpadmin,sudo,dip,plugdev,video,audio which you were previously in.

As you are no longer in sudoers you cannot add yourself back.

Getting a root shell using RefiT

What we now need to get to is a root shell. Googling did not help.

I have Ubuntu 14.04 LTS installed as a dual boot on my MacBookPro (2011). I installed it using rEFIt.

My normal boot is power up, select RefiT, select most recent Ubuntu, press Enter.

To change the grub boot command instead of Enter press F2 (or +). You now have three options, one of which is single user: this hangs for me. Move to the 'Standard Boot' and again press F2 rather than Enter. This enables you to edit the kernel string. I tried adding Single, single, s, init=/bin/bash, init=/bin/sh, 5, 3 and finally 1.

By adding 1 to the grub kernel line you are telling the machine to boot up only to run level one.

This will boot to a root prompt! Now to add yourself back to your groups:

$ usermod -G docker,adm,cdrom,lpadmin,sudo,dip,plugdev,video,audio timp

Whilst we are here:

$ passwd root

Hope this helps, I hope I don't need it again!

Never use useradd always use adduser

Acid Air Pollution on the Cowley Road Oxford Uk

The Long Wall which Long Wall Street is named for always has a light line of white sand at its base, and nearly always has ongoing masonry works to repair it.

These pictures are taken at another Oxford road junction.

On the eastern edge of Oxford another set of traffic lights, at the junction of Cowley Road and Between Towns Road, again causes stationary traffic.

The local limestone is not very hard, and is constantly eroded, with the damage to the mortar being worse than that to the stone.

The damage is worst at ground level up to one metre.

The damage is worst near the ground and is caused by acidic exhaust fumes.

Here all the lichen has been killed and the brick looks as though it has been cleaned with brick acid.

We know that breathing in small particles from diesel exhaust is dangerous, as the particle size is small enough to pass deep into the lungs. The pattern of the effect on the walls shows that the concentration is particularly strong under one metre in height. There are two primary schools, one on either side of this junction.

Iffley Village Oxford Rag Stone

The quality of Oxford stone can be pretty shaky, and the stone that was used for field and road boundary walls was presumably of lower quality than that used for houses as good quality stone is scarce on the clay. This wall in Iffley is a charming example, but note what is happening to the bottom metre.

Who should we be claiming financial damages from? Shell? BP? Exxon?