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ALEX BILBIE

Freelance AWS Solutions Architect and Devops Consultant

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CODING SOLO EPISODE 6

24 Nov 2017

In episode six of Coding Solo , I talked

about yet another holiday, we talk about how our new video-based

ventures are going, and how we validate those ideas we have in the

shower (or crawling through the Củ Chi tunnels).

Please do send us any feedback you have especially if there any topics

you feel we should cover or any questions you’d like us to answer

about freelancing. You can email us at feedback@codingsolo.works.

CODING SOLO EPISODE 5

21 Sep 2017

In episode five of Coding Solo , we talked

about finally meeting in person at the Laravel London September

meetup, answer more listener questions, the ups and downs of running

open source projects and finish off with their thoughts on Apple’s

announcements at the iPhone Event.

Please do send us any feedback you have especially if there any topics

you feel we should cover or any questions you’d like us to answer

about freelancing. You can email us at feedback@codingsolo.works.

GETTING THE AWS X-RAY DEAMON TO RUN ON ALPINE LINUX

31 Aug 2017

X-Ray is a managed distributed tracing

service by Amazon Web Services. Your application (whether it’s a

single API or made up of multiple distributed microservices) collects

data (such as timing and metrics for business logic, SQL queries and

calls to AWS services) whilst processing incoming requests and then

sends this data to a local deamon over UDP which in turn forwards the

data onto the X-Ray service.

I’ve been experimenting with bundling the X-Ray deamon

into an Alpine Linux container alongside

some other binaries however out of the box it didn’t work.

Attempting to execute the xray binary would result in a confusing

error message like this:

sh: /xray: not found

After some Googling I discovered the ldd command which is used to find

the shared libraries that a binary calls.

Executing ldd xray I get the following output:

/ # ldd xray

/lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)

libpthread.so.0 => /lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)

libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)

This first library that the X-Ray binary attempts to call is

/lib64/ld-linux-x86-64.so.2.

If I list the contents of / I can see that the /lib64 directory

isn’t present out of the box with Alpine:

/ # ls

bin dev etc home lib media mnt proc root run sbin srv sys tmp usr var

My understanding is that this is because Alpine Linux uses _musl libc_

instead of _GNU libc_ and the xray binary is linked against _GNU libc_

libraries.

Alpine provides a package called libc6-compat

which provides compatibility libraries for glibc as well as symlinks

/lib64 to /lib. This can be installed with the command apk add

libc6-compat.

After installing libc6-compat the X-Ray deamon now runs successfully.

CODING SOLO EPISODE 4

23 Aug 2017

In episode four of Coding Solo , David and

I have a nice ol’ chat about our feelings when it comes to working

on side projects. We also discuss taking time off from work and answer

some more listener emails.

Please do send us any feedback you have especially if there any topics

you feel we should cover or any questions you’d like us to answer

about freelancing. You can email us at feedback@codingsolo.works.

LOOKING FOR A NEW MAINTAINER OF LEAGUE/OAUTH2-SERVER

21 Aug 2017

A little over five years ago I pushed the first commit

for the project that eventually became league/oauth2-server

.

The project has been downloaded over 2.5 million times, has more than

3000 Github stars and has been contributed to by 77 awesome people

across some 2000 commits.

Last year when I became self-employed I had intentions that I’d have

more time to dedicate towards open source projects but reality worked

out slightly differently and I’ve had one of the busiest (and best)

years of my life.

The other principal factor is truth be told I don’t actively use the

project any more. This past year I’ve become more of a programming

language polyglot and I’ve written more lines of JavaScript, Swift

and Go than I have PHP.

That the project has stagnated somewhat has started to bother me

greatly. Therefore I believe it is now time to hand over the reigns to

someone who can devote more time and energy to the project than I’ve

been able to.

I’ve no deadline for finding someone - I want to find the right

person (or group of people) who is/are really impassioned by the

project, want to advance the project (for example implement OpenID

support) and are willing to devote time to answering support requests

and review pull requests.

If you reading this are that person, or you know someone who might be

please email me - hello@alexbilbie.com - I’d love to have a chat

with you.

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<a href="/2017/11/coding-solo-episode-6/">
          Coding Solo episode 6
        </a>

</h1>

<p>In episode six of <a href="https://codingsolo.works/">Coding Solo</a>, I talked about yet another holiday, we talk about how our new video-based ventures are going, and how we validate those ideas we have in the shower (or crawling through the Củ Chi tunnels).</p>

<p>Please do send us any feedback you have especially if there any topics you feel we should cover or any questions you’d like us to answer about freelancing. You can email us at <a href="mailto:feedback@codingsolo.works">feedback@codingsolo.works</a>.</p>

</div>
  
  <div class="post">
    <h1 class="post-title">

<a href="/2017/09/coding-solo-episode-5/">
          Coding Solo episode 5
        </a>

</h1>

<p>In episode five of <a href="https://codingsolo.works/">Coding Solo</a>, we talked about finally meeting in person at the Laravel London September meetup, answer more listener questions, the ups and downs of running open source projects and finish off with their thoughts on Apple’s announcements at the iPhone Event.</p>

</div>
  
  <div class="post">
    <h1 class="post-title">

<a href="/2017/08/aws-xray-deamon-alpine-linux/">
          Getting the AWS X-Ray deamon to run on Alpine Linux
        </a>

</h1>

<p><a href="https://aws.amazon.com/xray/">X-Ray</a> is a managed distributed tracing service by Amazon Web Services. Your application (whether it’s a single API or made up of multiple distributed microservices) collects data (such as timing and metrics for business logic, SQL queries and calls to AWS services) whilst processing incoming requests and then sends this data to a local deamon over UDP which in turn forwards the data onto the X-Ray service.</p>

<p>I’ve been experimenting with bundling the <a href="http://docs.aws.amazon.com/xray/latest/devguide/xray-daemon.html">X-Ray deamon</a> into an <a href="https://alpinelinux.org/">Alpine Linux</a> container alongside some other binaries however out of the box it didn’t work. Attempting to execute the <code class="highlighter-rouge">xray</code> binary would result in a confusing error message like this:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>sh: /xray: not found
</code></pre></div></div>

<p>After some Googling I discovered the <code class="highlighter-rouge">ldd</code> command which is used to find the shared libraries that a binary calls.</p>

<p>Executing <code class="highlighter-rouge">ldd xray</code> I get the following output:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>/ # ldd xray
/lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)
libpthread.so.0 =&gt; /lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)
libc.so.6 =&gt; /lib64/ld-linux-x86-64.so.2 (0x55a247c9b000)
</code></pre></div></div>

<p>This first library that the X-Ray binary attempts to call is <code class="highlighter-rouge">/lib64/ld-linux-x86-64.so.2</code>.</p>

<p>If I list the contents of <code class="highlighter-rouge">/</code> I can see that the <code class="highlighter-rouge">/lib64</code> directory isn’t present out of the box with Alpine:</p>

<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>/ # ls
bin    dev    etc    home   lib    media  mnt    proc   root   run    sbin   srv    sys    tmp    usr    var
</code></pre></div></div>

<p>My understanding is that this is because Alpine Linux uses <em>musl libc</em> instead of <em>GNU libc</em> and the <code class="highlighter-rouge">xray</code> binary is linked against <em>GNU libc</em> libraries.</p>

<p>Alpine provides a package called <a href="https://pkgs.alpinelinux.org/package/edge/main/x86/libc6-compat">libc6-compat</a> which provides compatibility libraries for glibc as well as symlinks <code class="highlighter-rouge">/lib64</code> to <code class="highlighter-rouge">/lib</code>. This can be installed with the command <code class="highlighter-rouge">apk add libc6-compat</code>.</p>

<p>After installing <code class="highlighter-rouge">libc6-compat</code> the X-Ray deamon now runs successfully.</p>

</div>
  
  <div class="post">
    <h1 class="post-title">

<a href="/2017/08/coding-solo-episode-4/">
          Coding Solo episode 4
        </a>

</h1>

<p>In episode four of <a href="https://codingsolo.works/">Coding Solo</a>, David and I have a nice ol’ chat about our feelings when it comes to working on side projects. We also discuss taking time off from work and answer some more listener emails.</p>

</div>
  
  <div class="post">
    <h1 class="post-title">

<a href="/2017/08/looking-for-a-new-maintainer-of-league-oauth2-server/">
          Looking for a new maintainer of league/oauth2-server
        </a>

</h1>

<p>A little over five years ago I pushed the <a href="https://github.com/thephpleague/oauth2-server/commit/6649083e71dd7c1e095e8dd56df15f1adbc5b30c">first commit</a> for the project that eventually became <a href="https://github.com/thephpleague/oauth2-server">league/oauth2-server</a>.</p>

<p>The project has been downloaded over 2.5 million times, has more than 3000 Github stars and has been contributed to by 77 awesome people across some 2000 commits.</p>

<p>Last year when I became self-employed I had intentions that I’d have more time to dedicate towards open source projects but reality worked out slightly differently and I’ve had one of the busiest (and best) years of my life.</p>

<p>The other principal factor is truth be told I don’t actively use the project any more. This past year I’ve become more of a programming language polyglot and I’ve written more lines of JavaScript, Swift and Go than I have PHP.</p>

<p>That the project has stagnated somewhat has started to bother me greatly. Therefore I believe it is now time to hand over the reigns to someone who can devote more time and energy to the project than I’ve been able to.</p>

<p>I’ve no deadline for finding someone - I want to find the right person (or group of people) who is/are really impassioned by the project, want to advance the project (for example implement OpenID support) and are willing to devote time to answering support requests and review pull requests.</p>

<p>If you reading this are that person, or you know someone who might be please email me - <a href="mailto:hello@alexbilbie.com">hello@alexbilbie.com</a> - I’d love to have a chat with you.</p>

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ALEX BILBIE

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24 Nov 2017

21 Sep 2017

31 Aug 2017

/ # ldd xray

/ # ls

libraries.

libc6-compat.

23 Aug 2017

21 Aug 2017

.

years of my life.

been able to.

with you.

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