.. _faq:

Frequently asked questions
==========================

Transfer Module
***************

required = {'jpeg', 'zlib'} - SyntaxError: invalid syntax
---------------------------------------------------------

Full error stack:

.. code-block:: bash

   Collecting pillow>=2.4.0 (from reportlab)
      Using cached Pillow-4.0.0.tar.gz
         Complete output from command python setup.py egg_info:
         Traceback (most recent call last):
            File "<string>", line 1, in <module>
            File "/tmp/root/pip-build-525vF6/pillow/setup.py", line 138
               required = {'jpeg', 'zlib'}
                              ^
         SyntaxError: invalid syntax

This bug affects 3.6 version installed from source (RPM 3.6 and DEB 3.6 should not be affected). It has been fixed in 3.7.
It can be fixed in 3.6 by downgrading the pypi pillow package:

.. code-block:: bash

    pip install pillow==3.4.2

NoSectionError: No section: 'esgf_credential'
---------------------------------------------

Run commands below:

.. code-block:: bash

    sudo sed -i -e "s/install/get','install/" /usr/share/python/synda/sdt/bin/sdconst.py

urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
-------------------------------------------------------------------------------------

Run commands below:

.. code-block:: bash

    synda certificate renew -x

sdexception.SDException: code=SDATYPES-101,message=Path not found (/srv/synda/sdt)
----------------------------------------------------------------------------------

Run commands below:

.. code-block:: bash

    mkdir -p /srv/synda/sdt
    sudo wget http://sd-104052.dedibox.fr/synda/patches/3.2/sdcleanup_tree.sh -O /usr/share/python/synda/sdt/bin/sdcleanup_tree.sh


ImportError: No module named sysconfig
--------------------------------------

This error occurs when installing Synda from source with an old version of ``install.sh`` script (<20160215). Downloading the last version of install.sh script should fix the problem.

'pkg_resources.DistributionNotFound: setuptools>=1.0' error
-----------------------------------------------------------

Run command below:

.. code-block:: bash

    sudo /usr/share/python/synda/sdt/bin/pip install setuptools==19.7

'Module argparse was already imported' error
--------------------------------------------
Run command below:

.. code-block:: bash

    pip uninstall argparse

"('system library', 'fopen', 'No such file or directory')" error during certificate retrieving
----------------------------------------------------------------------------------------------

Unset all X509 environment variables and remove ``~/.esg`` directory.

'OpenSL: error:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown' error
----------------------------------------------------------------------------------

This signals that the server does not trust the certificate issued by the MyProxy CA.

Run commands below:

.. code-block:: bash

    synda certificate renew -x

If this doesn't help, you can find more information `here <https://github.com/ESGF/esgf.github.io/wiki/CMIP5_FAQs>`_

"No module named datetime" error
--------------------------------

Remove virtualenv from the path:

.. code-block:: bash

    export PATH=/usr/local/bin:/usr/bin:/bin

AttributeError: 'FFILibrary' object has no attribute 'SSL_OP_NO_TICKET' error
-----------------------------------------------------------------------------

Run command below in *synda* virtualenv to retrieve pyopenssl HEAD version from GitHub:

.. code-block:: bash

    easy_install https://github.com/pyca/pyopenssl/tarball/master

`More information <http://stackoverflow.com/questions/23006023/error-installing-pyopenssl>`_.


Post-Processing Module
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