add apt-get update to installation instructions

Without apt-get update the repository added to the sources.list is not taken into consideration and an older version of ceph-deploy is going to be installed.

Signed-off-by: Loic Dachary <loic@dachary.org>

diff --git a/doc/start/quick-start-preflight.rst b/doc/start/quick-start-preflight.rst
index 468e21e4b13a411ac1d905d7cd19b744cd59434a..8a2d981d3ddd94ee2ab64b5eaf018f33ebdf7650 100644 (file)
--- a/doc/start/quick-start-preflight.rst
+++ b/doc/start/quick-start-preflight.rst
@@ -100,6 +100,7 @@ To install ``ceph-deploy``, execute the following::
 
        wget -q -O- 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc' | sudo apt-key add -
        echo deb http://ceph.com/debian-cuttlefish/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list
+       sudo apt-get update
        sudo apt-get install ceph-deploy
 
 
@@ -150,4 +151,4 @@ proceed to the `Storage Cluster Quick Start`_.
    machines from the admin node!
 
 .. _Storage Cluster Quick Start: ../quick-ceph-deploy
-.. _OS Recommendations: ../../install/os-recommendations
\ No newline at end of file
+.. _OS Recommendations: ../../install/os-recommendations