user84890: I am trying to take advantage of the new release of c-lightning 0.6 that provide the ability to setup a lightweight node (i.e. No Local bitcoind instance running). But did not found any documentation how to do that yet. 
What should I do in order to have a lightning node running a lightweight node? Is there a specific flag to use? or it is just a call from bitcoin-cli with a remote connexion flag setup on it? 
Current setup:

Ubuntu 18.04 server
c-lightning 0.6


user120: One lightweight alternative that I use quite often when setting up a Lightning node is spruned. The following will get you up and running:
Install some dependencies:
apt-get install -y git python3 \
                       libleveldb-dev \
                       python3-dev \
                       git \
                       gcc \
                       g++ \
                       python3-pip

Get spruned and its dependencies:
git clone https://github.com/gdassori/spruned.git spruned
cd spruned
git checkout 43e197693278fd551b165c6cfa5de78f853ef554 
pip install -r requirements.txt

The third line is currently needed since the master commit is currently broken.
Next you can start the lightweight node with the following:
python3 spruned.py --network bitcoin.mainnet --datadir data --debug --rpcuser=rpcuser --rpcpassword=rpcpassword

Once the node is running you can start c-lightning like this:
lightningd --log-level=debug --network=bitcoin \
           --bitcoin-rpcuser=rpcuser \
           --bitcoin-rpcpassword=rpcpassword


84890: <p>I am trying to take advantage of the new release of c-lightning 0.6 that provide the ability to setup a lightweight node (i.e. No Local <code>bitcoind</code> instance running). But did not found any documentation how to do that yet. </p>

<p>What should I do in order to have a lightning node running a lightweight node? Is there a specific flag to use? or it is just a call from bitcoin-cli with a remote connexion flag setup on it? </p>

<p>Current setup:</p>

<ul>
<li>Ubuntu 18.04 server</li>
<li>c-lightning 0.6</li>
</ul>
 120: <p>One lightweight alternative that I use quite often when setting up a Lightning node is <a href="https://github.com/gdassori/spruned" rel="nofollow noreferrer">spruned</a>. The following will get you up and running:</p>

<p>Install some dependencies:</p>

<pre><code>apt-get install -y git python3 \
                       libleveldb-dev \
                       python3-dev \
                       git \
                       gcc \
                       g++ \
                       python3-pip
</code></pre>

<p>Get spruned and its dependencies:</p>

<pre><code>git clone https://github.com/gdassori/spruned.git spruned
cd spruned
git checkout 43e197693278fd551b165c6cfa5de78f853ef554 
pip install -r requirements.txt
</code></pre>

<p>The third line is currently needed since the <code>master</code> commit is currently broken.</p>

<p>Next you can start the lightweight node with the following:</p>

<pre><code>python3 spruned.py --network bitcoin.mainnet --datadir data --debug --rpcuser=rpcuser --rpcpassword=rpcpassword
</code></pre>

<p>Once the node is running you can start c-lightning like this:</p>

<pre><code>lightningd --log-level=debug --network=bitcoin \
           --bitcoin-rpcuser=rpcuser \
           --bitcoin-rpcpassword=rpcpassword
</code></pre>
