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| -rw-r--r-- | lib/spack/docs/getting_started.rst | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/lib/spack/docs/getting_started.rst b/lib/spack/docs/getting_started.rst index 407c1774b8..09ae4b5ec3 100644 --- a/lib/spack/docs/getting_started.rst +++ b/lib/spack/docs/getting_started.rst @@ -1064,9 +1064,12 @@ Secret keys may also be later exported using the Key creation speed The creation of a new GPG key requires generating a lot of random numbers. Depending on the entropy produced on your system, the entire process may - take a long time (even a few minutes). To speed it up you may install - tools like ``rngd``, which is usually available as a package in the host OS. - On e.g. an Ubuntu machine you need to give the following commands: + take a long time (*even appearing to hang*). Virtual machines and cloud + instances are particularly likely to display this behavior. + + To speed it up you may install tools like ``rngd``, which is + usually available as a package in the host OS. On e.g. an + Ubuntu machine you need to give the following commands: .. code-block:: console @@ -1075,6 +1078,18 @@ Secret keys may also be later exported using the before generating the keys. + Another alternative is ``haveged``, which can be installed on + RHEL/CentOS machines as follows: + + .. code-block:: console + + $ sudo yum install haveged + $ sudo chkconfig haveged on + + `This Digital Ocean tutorial + <https://www.digitalocean.com/community/tutorials/how-to-setup-additional-entropy-for-cloud-servers-using-haveged>`_ + provides a good overview of sources of randomness. + ^^^^^^^^^^^^ Listing keys ^^^^^^^^^^^^ |