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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-why.html" > 1. Why should I use cdist?< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-features.html" > 2. Features< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-upgrade.html" > 5. How to upgrade cdist< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-quickstart.html" > 7. Quickstart< / a > < / li >
< li class = "toctree-l1 current" > < a class = "current reference internal" href = "#" > 8. Dive into real world cdist< / a > < ul >
< li class = "toctree-l2" > < a class = "reference internal" href = "#introduction" > 8.1. Introduction< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-type-layout" > 8.2. Creating type layout< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-sample-bottle-hosting-type-parameters" > 8.3. Creating __sample_bottle_hosting type parameters< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-sample-bottle-hosting-type-manifest" > 8.4. Creating __sample_bottle_hosting type manifest< / a > < ul >
< li class = "toctree-l3" > < a class = "reference internal" href = "#creating-user-and-user-directories" > 8.4.1. Creating user and user directories< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#installing-packages" > 8.4.2. Installing packages< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#creating-postgresql-database" > 8.4.3. Creating PostgreSQL database< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#configuring-uwsgi" > 8.4.4. Configuring uWSGI< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#configuring-nginx-for-let-s-encrypt-and-https-redirection" > 8.4.5. Configuring nginx for Let's Encrypt and HTTPS redirection< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#configuring-certificate-creation" > 8.4.6. Configuring certificate creation< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#configuring-nginx-https-server-with-uwsgi-upstream" > 8.4.7. Configuring nginx HTTPS server with uWSGI upstream< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "#complete-sample-bottle-hosting-type-manifest-listing" > 8.4.8. Complete __sample_bottle_hosting type manifest listing< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-sample-bottle-hosting-type-gencode-remote" > 8.5. Creating __sample_bottle_hosting type gencode-remote< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-sample-nginx-http-letsencrypt-and-ssl-redirect-type" > 8.6. Creating __sample_nginx_http_letsencrypt_and_ssl_redirect type< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-init-manifest" > 8.7. Creating init manifest< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#configuring-host" > 8.8. Configuring host< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#creating-python-bottle-application" > 8.9. Creating python bottle application< / a > < ul >
< li class = "toctree-l3" > < a class = "reference internal" href = "#preparing-database" > 8.9.1. Preparing database< / a > < / li >
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< li class = "toctree-l3" > < a class = "reference internal" href = "#openning-application" > 8.9.3. Openning application< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "man1/cdist.html" > 9. cdist(1)< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "man1/cdist-dump.html" > 10. cdist-dump(1)< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "man1/cdist-new-type.html" > 11. cdist-new-type(1)< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-bootstrap.html" > 12. Bootstrap< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-configuration.html" > 13. Configuration< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-manifest.html" > 14. Manifest< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-type.html" > 15. cdist type< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-types.html" > 16. cdist types< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-explorer.html" > 17. Explorer< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-messaging.html" > 18. Messaging< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-parallelization.html" > 19. Parallelization< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-preos.html" > 22. PreOS< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-integration.html" > 23. cdist integration / using cdist as library< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-stages.html" > 26. Execution stages< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-cache.html" > 27. Local cache overview< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-saving-output-streams.html" > 28. Saving output streams< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-remote-exec-copy.html" > 29. Remote exec and copy commands< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "cdist-troubleshooting.html" > 31. Troubleshooting< / a > < / li >
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< li > 8. Dive into real world cdist< / li >
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< h1 > 8. Dive into real world cdist< a class = "headerlink" href = "#dive-into-real-world-cdist" title = "Permalink to this headline" > ¶< / a > < / h1 >
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< div class = "section" id = "introduction" >
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< h2 > 8.1. Introduction< a class = "headerlink" href = "#introduction" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > This walkthrough shows real world cdist configuration example.< / p >
< p > Sample target host is named < strong > test.ungleich.ch< / strong > .
Just replace < strong > test.ungleich.ch< / strong > with your target hostname.< / p >
< p > Our goal is to configure python application hosting. For writing sample
application we will use < a class = "reference external" href = "http://bottlepy.org" > Bottle< / a > WSGI micro web-framework.
It will use PostgreSQL database and it will list items from < strong > items< / strong > table.
It will be served by uWSGI server. We will also use the Nginx web server
as a reverse proxy and we want HTTPS.
For HTTPS we will use Let's Encrypt certificate.< / p >
< p > For setting up hosting we want to use cdist so we will write a new type
for that. This type will:< / p >
< ul class = "simple" >
< li > install required packages< / li >
< li > create OS user, user home directory and application home directory< / li >
< li > create PostgreSQL database< / li >
< li > configure uWSGI< / li >
< li > configure Let's Encrypt certificate< / li >
< li > configure nginx.< / li >
< / ul >
< p > Our type will not create the actual python application. Its intention is only
to configure hosing for specified user and project. It is up to the user to
create his/her applications.< / p >
< p > So let's start.< / p >
< / div >
< div class = "section" id = "creating-type-layout" >
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< h2 > 8.2. Creating type layout< a class = "headerlink" href = "#creating-type-layout" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > We will create a new custom type. Let's call it < strong > __sample_bottle_hosting< / strong > .< / p >
< p > Go to < strong > ~/.cdist/type< / strong > directory (create it if it does not exist) and create
new type layout:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > cd< / span > < span class = "o" > ~/.< / span > < span class = "n" > cdist< / span > < span class = "o" > /< / span > < span class = "nb" > type< / span >
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< span class = "n" > mkdir< / span > < span class = "n" > __sample_bottle_hosting< / span >
< span class = "n" > cd< / span > < span class = "n" > __sample_bottle_hosting< / span >
< span class = "n" > touch< / span > < span class = "n" > manifest< / span > < span class = "n" > gencode< / span > < span class = "o" > -< / span > < span class = "n" > remote< / span >
< span class = "n" > mkdir< / span > < span class = "n" > parameter< / span >
< span class = "n" > touch< / span > < span class = "n" > parameter< / span > < span class = "o" > /< / span > < span class = "n" > required< / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "creating-sample-bottle-hosting-type-parameters" >
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< h2 > 8.3. Creating __sample_bottle_hosting type parameters< a class = "headerlink" href = "#creating-sample-bottle-hosting-type-parameters" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Our type will be configurable through the means of parameters. Let's define
the following parameters:< / p >
< dl class = "docutils" >
< dt > projectname< / dt >
< dd > name for the project, needed for uWSGI ini file< / dd >
< dt > user< / dt >
< dd > user name< / dd >
< dt > domain< / dt >
< dd > target host domain, needed for Let's Encrypt certificate.< / dd >
< / dl >
< p > We define parameters to make our type reusable for different projects, user and domain.< / p >
< p > Define required parameters:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > printf< / span > < span class = "s2" > " projectname< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span > < span class = "o" > > > < / span > < span class = "n" > parameter< / span > < span class = "o" > /< / span > < span class = "n" > required< / span >
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< span class = "n" > printf< / span > < span class = "s2" > " user< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span > < span class = "o" > > > < / span > < span class = "n" > parameter< / span > < span class = "o" > /< / span > < span class = "n" > required< / span >
< span class = "n" > printf< / span > < span class = "s2" > " domain< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span > < span class = "o" > > > < / span > < span class = "n" > parameter< / span > < span class = "o" > /< / span > < span class = "n" > required< / span >
< / pre > < / div >
< / div >
< p > For details on type parameters see < a class = "reference external" href = "cdist-type.html#defining-parameters" > Defining parameters< / a > .< / p >
< / div >
< div class = "section" id = "creating-sample-bottle-hosting-type-manifest" >
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< h2 > 8.4. Creating __sample_bottle_hosting type manifest< a class = "headerlink" href = "#creating-sample-bottle-hosting-type-manifest" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Next step is to define manifest (~/.cdist/type/__sample_bottle_hosting/manifest).
We also want our type to currently support only Devuan. So we will start by
checking target host OS. We will use < a class = "reference external" href = "cdist-reference.html#explorers" > os< / a >
global explorer:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > os=$(cat " $__global/explorer/os" )
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case " $os" in
devuan)
:
;;
*)
echo " OS $os currently not supported" > & 2
exit 1
;;
esac
< / pre > < / div >
< / div >
< p > If target host OS is not Devuan then we print error message to stderr
and exit. For other OS-es support we should check and change package names
we should install, because packages differ in different OS-es and in different
OS distributions like GNU/Linux distributions. There can also be a different
configuration locations (e.g. nginx config directory could be in /usr/local tree).
If we detected unsupported OS we should error out. cdist will stop configuration
process and output error message.< / p >
< div class = "section" id = "creating-user-and-user-directories" >
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< h3 > 8.4.1. Creating user and user directories< a class = "headerlink" href = "#creating-user-and-user-directories" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Then we create user and his/her home directory and application home directory.
We will use existing cdist types < a class = "reference external" href = "man7/cdist-type__user.html" > __user< / a > and < a class = "reference external" href = "man7/cdist-type__directory.html" > __directory< / a > :< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > user=" $(cat " $__object/parameter/user" )"
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home=" /home/$user"
apphome=" $home/app"
# create user
__user " $user" --home " $home" --shell /bin/bash
# create user home dir
require=" __user/$user" __directory " $home" \
--owner " $user" --group " $user" --mode 0755
# create app home dir
require=" __user/$user __directory/$home" __directory " $apphome" \
--state present --owner " $user" --group " $user" --mode 0755
< / pre > < / div >
< / div >
< p > First we define < em > user< / em > , < em > home< / em > and < em > apphome< / em > variables. User is defined by type's
< strong > user< / strong > parameter. Here we use < strong > require< / strong > which is cdist's way to define dependencies.
User home directory should be created < strong > after< / strong > user is created. And application
home directory is created < strong > after< / strong > both user and user home directory are created.
For details on < strong > require< / strong > see < a class = "reference external" href = "cdist-manifest.html#dependencies" > Dependencies< / a > .< / p >
< / div >
< div class = "section" id = "installing-packages" >
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< h3 > 8.4.2. Installing packages< a class = "headerlink" href = "#installing-packages" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Install required packages using existing < a class = "reference external" href = "man7/cdist-type__package.html" > __package< / a > type.
Before installing package we want to update apt package index using
< a class = "reference external" href = "man7/cdist-type__apt_update_index.html" > __apt_update_index< / a > :< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > # define packages that need to be installed
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packages_to_install=" nginx uwsgi-plugin-python3 python3-dev python3-pip postgresql postgresql-contrib libpq-dev python3-venv uwsgi python3-psycopg2"
# update package index
__apt_update_index
# install packages
for package in $packages_to_install
do require=" __apt_update_index" __package $package --state=present
done
< / pre > < / div >
< / div >
< p > Here we use shell for loop. It executes < strong > require=" __apt_update_index" __package< / strong >
for each member in a list we define in < strong > packages_to_install< / strong > variable.
This is much nicer then having as many < strong > require=" __apt_update_index" __package< / strong >
lines as there are packages we want to install.< / p >
< p > For python packages we use < a class = "reference external" href = "man7/cdist-type__package_pip.html" > __package_pip< / a > :< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > # install pip3 packages
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for package in bottle bottle-pgsql; do
__package_pip --pip pip3 $package
done
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "creating-postgresql-database" >
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< h3 > 8.4.3. Creating PostgreSQL database< a class = "headerlink" href = "#creating-postgresql-database" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Create PostgreSQL database using < a class = "reference external" href = "man7/cdist-type__postgres_database.html" > __postgres_database< / a >
and < a class = "reference external" href = "man7/cdist-type__postgres_role.html" > __postgres_role< / a > for creating database user:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > #PostgreSQL db & user
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postgres_server=postgresql
# create PostgreSQL db user
require=" __package/postgresql" __postgres_role $user --login --createdb
# create PostgreSQL db
require=" __postgres_role/$user __package/postgresql" __postgres_database $user \
--owner $user
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "configuring-uwsgi" >
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< h3 > 8.4.4. Configuring uWSGI< a class = "headerlink" href = "#configuring-uwsgi" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Configure uWSGI using < a class = "reference external" href = "man7/cdist-type__file.html" > __file< / a > type:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > # configure uWSGI
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projectname=" $(cat " $__object/parameter/projectname" )"
require=" __package/uwsgi" __file /etc/uwsgi/apps-enabled/$user.ini \
--owner root --group root --mode 0644 \
--state present \
--source - < < EOF
[uwsgi]
socket = $apphome/uwsgi.sock
chdir = $apphome
wsgi-file = $projectname/wsgi.py
touch-reload = $projectname/wsgi.py
processes = 4
threads = 2
chmod-socket = 666
daemonize=true
vacuum = true
uid = $user
gid = $user
EOF
< / pre > < / div >
< / div >
< p > We require package uWSGI present in order to create < strong > /etc/uwsgi/apps-enabled/$user.ini< / strong > file.
Installation of uWSGI also creates configuration layout: < strong > /etc/uwsgi/apps-enabled< / strong > .
If this directory does not exist then < strong > __file< / strong > type would error.
We also use stdin as file content source. For details see < a class = "reference external" href = "cdist-type.html#input-from-stdin" > Input from stdin< / a > .
For feading stdin we use here-document (< strong > < < < / strong > operator). It allows redirection of subsequent
lines read by the shell to the input of a command until a line containing only the delimiter
and a newline, with no blank characters in between (EOF in our case).< / p >
< / div >
< div class = "section" id = "configuring-nginx-for-let-s-encrypt-and-https-redirection" >
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< h3 > 8.4.5. Configuring nginx for Let's Encrypt and HTTPS redirection< a class = "headerlink" href = "#configuring-nginx-for-let-s-encrypt-and-https-redirection" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Next configure nginx for Let's Encrypt and for HTTP -> HTTPS redirection. For this
purpose we will create new type < strong > __sample_nginx_http_letsencrypt_and_ssl_redirect< / strong >
and use it here:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > domain=" $(cat " $__object/parameter/domain" )"
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webroot=" /var/www/html"
__sample_nginx_http_letsencrypt_and_ssl_redirect " $domain" --webroot " $webroot"
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "configuring-certificate-creation" >
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< h3 > 8.4.6. Configuring certificate creation< a class = "headerlink" href = "#configuring-certificate-creation" title = "Permalink to this headline" > ¶< / a > < / h3 >
2019-04-23 18:55:23 +00:00
< p > After HTTP nginx configuration we will create Let's Encrypt certificate using
< a class = "reference external" href = "man7/cdist-type__letsencrypt_cert.html" > __letsencrypt_cert< / a > type.
For Let's Encrypt cert configuration ensure that there is a DNS entry for your
domain. We assure that cert creation is applied after nginx HTTP is configured
for Let's Encrypt to work:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "c1" > # create SSL cert< / span >
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< span class = "n" > require< / span > < span class = "o" > =< / span > < span class = "s2" > " __package/nginx __sample_nginx_http_letsencrypt_and_ssl_redirect/$domain" < / span > \
< span class = "n" > __letsencrypt_cert< / span > < span class = "o" > --< / span > < span class = "n" > admin< / span > < span class = "o" > -< / span > < span class = "n" > email< / span > < span class = "n" > admin< / span > < span class = "nd" > @test< / span > < span class = "o" > .< / span > < span class = "n" > ungleich< / span > < span class = "o" > .< / span > < span class = "n" > ch< / span > \
< span class = "o" > --< / span > < span class = "n" > webroot< / span > < span class = "s2" > " $webroot" < / span > \
< span class = "o" > --< / span > < span class = "n" > automatic< / span > < span class = "o" > -< / span > < span class = "n" > renewal< / span > \
< span class = "o" > --< / span > < span class = "n" > renew< / span > < span class = "o" > -< / span > < span class = "n" > hook< / span > < span class = "s2" > " service nginx reload" < / span > \
< span class = "o" > --< / span > < span class = "n" > domain< / span > < span class = "s2" > " $domain" < / span > \
< span class = "s2" > " $domain" < / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "configuring-nginx-https-server-with-uwsgi-upstream" >
2019-05-04 22:18:20 +00:00
< h3 > 8.4.7. Configuring nginx HTTPS server with uWSGI upstream< a class = "headerlink" href = "#configuring-nginx-https-server-with-uwsgi-upstream" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Then we can configure nginx HTTPS server that will use created Let's Encrypt certificate:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > # configure nginx
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require=" __package/nginx __letsencrypt_cert/$domain" \
__file " /etc/nginx/sites-enabled/https-$domain" \
--source - --mode 0644 < < EOF
upstream _bottle {
server unix:$apphome/uwsgi.sock;
}
server {
listen 443;
listen [::]:443;
server_name $domain;
access_log /var/log/nginx/access.log;
ssl on;
ssl_certificate /etc/letsencrypt/live/$domain/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/$domain/privkey.pem;
client_max_body_size 256m;
location / {
try_files \$uri @uwsgi;
}
location @uwsgi {
include uwsgi_params;
uwsgi_pass _bottle;
}
}
EOF
< / pre > < / div >
< / div >
< p > Now our manifest is finished.< / p >
< / div >
< div class = "section" id = "complete-sample-bottle-hosting-type-manifest-listing" >
2019-05-04 22:18:20 +00:00
< h3 > 8.4.8. Complete __sample_bottle_hosting type manifest listing< a class = "headerlink" href = "#complete-sample-bottle-hosting-type-manifest-listing" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Here is complete __sample_bottle_hosting type manifest listing,
located in ~/.cdist/type/__sample_bottle_hosting/manifest:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > #!/bin/sh
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os=$(cat " $__global/explorer/os" )
case " $os" in
devuan)
:
;;
*)
echo " OS $os currently not supported" > & 2
exit 1
;;
esac
projectname=" $(cat " $__object/parameter/projectname" )"
user=" $(cat " $__object/parameter/user" )"
home=" /home/$user"
apphome=" $home/app"
domain=" $(cat " $__object/parameter/domain" )"
# create user
__user " $user" --home " $home" --shell /bin/bash
# create user home dir
require=" __user/$user" __directory " $home" \
--owner " $user" --group " $user" --mode 0755
# create app home dir
require=" __user/$user __directory/$home" __directory " $apphome" \
--state present --owner " $user" --group " $user" --mode 0755
# define packages that need to be installed
packages_to_install=" nginx uwsgi-plugin-python3 python3-dev python3-pip postgresql postgresql-contrib libpq-dev python3-venv uwsgi python3-psycopg2"
# update package index
__apt_update_index
# install packages
for package in $packages_to_install
do require=" __apt_update_index" __package $package --state=present
done
# install pip3 packages
for package in bottle bottle-pgsql; do
__package_pip --pip pip3 $package
done
#PostgreSQL db & user
postgres_server=postgresql
# create PostgreSQL db user
require=" __package/postgresql" __postgres_role $user --login --createdb
# create PostgreSQL db
require=" __postgres_role/$user __package/postgresql" __postgres_database $user \
--owner $user
# configure uWSGI
require=" __package/uwsgi" __file /etc/uwsgi/apps-enabled/$user.ini \
--owner root --group root --mode 0644 \
--state present \
--source - < < EOF
[uwsgi]
socket = $apphome/uwsgi.sock
chdir = $apphome
wsgi-file = $projectname/wsgi.py
touch-reload = $projectname/wsgi.py
processes = 4
threads = 2
chmod-socket = 666
daemonize=true
vacuum = true
uid = $user
gid = $user
EOF
# setup nginx HTTP for Let' s Encrypt and SSL redirect
domain=" $(cat " $__object/parameter/domain" )"
webroot=" /var/www/html"
__sample_nginx_http_letsencrypt_and_ssl_redirect " $domain" --webroot " $webroot"
# create SSL cert
require=" __package/nginx __sample_nginx_http_letsencrypt_and_ssl_redirect/$domain" \
__letsencrypt_cert --admin-email admin@test.ungleich.ch \
--webroot " $webroot" \
--automatic-renewal \
--renew-hook " service nginx reload" \
--domain " $domain" \
" $domain"
# configure nginx
require=" __package/nginx __letsencrypt_cert/$domain" \
__file " /etc/nginx/sites-enabled/https-$domain" \
--source - --mode 0644 < < EOF
upstream _bottle {
server unix:$apphome/uwsgi.sock;
}
server {
listen 443;
listen [::]:443;
server_name $domain;
access_log /var/log/nginx/access.log;
ssl on;
ssl_certificate /etc/letsencrypt/live/$domain/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/$domain/privkey.pem;
client_max_body_size 256m;
location / {
try_files \$uri @uwsgi;
}
location @uwsgi {
include uwsgi_params;
uwsgi_pass _bottle;
}
}
EOF
< / pre > < / div >
< / div >
< / div >
< / div >
< div class = "section" id = "creating-sample-bottle-hosting-type-gencode-remote" >
2019-05-04 22:18:20 +00:00
< h2 > 8.5. Creating __sample_bottle_hosting type gencode-remote< a class = "headerlink" href = "#creating-sample-bottle-hosting-type-gencode-remote" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Now define < strong > gencode-remote< / strong > script: ~/.cdist/type/__sample_bottle_hosting/gencode-remote.
After manifest is applied it should restart uWSGI and nginx services so that our
configuration is active. Our gencode-remote looks like the following:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > echo< / span > < span class = "s2" > " service uwsgi restart" < / span >
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< span class = "n" > echo< / span > < span class = "s2" > " service nginx restart" < / span >
< / pre > < / div >
< / div >
< p > Our < strong > __sample_bottle_hosting< / strong > type is now finished.< / p >
< / div >
< div class = "section" id = "creating-sample-nginx-http-letsencrypt-and-ssl-redirect-type" >
2019-05-04 22:18:20 +00:00
< h2 > 8.6. Creating __sample_nginx_http_letsencrypt_and_ssl_redirect type< a class = "headerlink" href = "#creating-sample-nginx-http-letsencrypt-and-ssl-redirect-type" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Let's now create < strong > __sample_nginx_http_letsencrypt_and_ssl_redirect< / strong > type:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > cd< / span > < span class = "o" > ~/.< / span > < span class = "n" > cdist< / span > < span class = "o" > /< / span > < span class = "nb" > type< / span >
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< span class = "n" > mkdir< / span > < span class = "n" > __sample_nginx_http_letsencrypt_and_ssl_redirect< / span >
< span class = "n" > cd< / span > < span class = "n" > __sample_nginx_http_letsencrypt_and_ssl_redirect< / span >
< span class = "n" > mkdir< / span > < span class = "n" > parameter< / span >
< span class = "n" > echo< / span > < span class = "n" > webroot< / span > < span class = "o" > > < / span > < span class = "n" > parameter< / span > < span class = "o" > /< / span > < span class = "n" > required< / span >
< span class = "n" > touch< / span > < span class = "n" > manifest< / span >
< span class = "n" > touch< / span > < span class = "n" > gencode< / span > < span class = "o" > -< / span > < span class = "n" > remote< / span >
< / pre > < / div >
< / div >
< p > Edit manifest:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > domain=" $__object_id"
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webroot=" $(cat " $__object/parameter/webroot" )"
# make sure we have nginx package
__package nginx
# setup Let' s Encrypt HTTP acme challenge, redirect HTTP to HTTPS
require=" __package/nginx" __file " /etc/nginx/sites-enabled/http-$domain" \
--source - --mode 0644 < < EOF
server {
listen *:80;
listen [::]:80;
server_name $domain;
# Let' s Encrypt
location /.well-known/acme-challenge/ {
root $webroot;
}
# Everything else -> SSL
location / {
return 301 https://\$host\$request_uri;
}
}
EOF
< / pre > < / div >
< / div >
< p > Edit gencode-remote:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > echo< / span > < span class = "s2" > " service nginx reload" < / span >
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< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "creating-init-manifest" >
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< h2 > 8.7. Creating init manifest< a class = "headerlink" href = "#creating-init-manifest" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Next create init manifest:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > cd< / span > < span class = "o" > ~/.< / span > < span class = "n" > cdist< / span > < span class = "o" > /< / span > < span class = "n" > manifest< / span >
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< span class = "n" > printf< / span > < span class = "s2" > " __sample_bottle_hosting --projectname sample --user app --domain \$__target_host sample< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span > < span class = "o" > > < / span > < span class = "n" > sample< / span >
< / pre > < / div >
< / div >
< p > Using this init manifest our target host will be configured using our < strong > __sample_bottle_hosting< / strong >
type with projectname < em > sample< / em > , user < em > app< / em > and domain equal to < strong > __target_host< / strong > .
Here the last positional argument < em > sample< / em > is type's object id. For details on
< strong > __target_host< / strong > and < strong > __object_id< / strong > see
< a class = "reference external" href = "cdist-reference.html#environment-variables-for-reading" > Environment variables (for reading)< / a >
reference.< / p >
< / div >
< div class = "section" id = "configuring-host" >
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< h2 > 8.8. Configuring host< a class = "headerlink" href = "#configuring-host" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Finally configure test.ungleich.ch:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > cdist< / span > < span class = "n" > config< / span > < span class = "o" > -< / span > < span class = "n" > v< / span > < span class = "o" > -< / span > < span class = "n" > i< / span > < span class = "o" > ~/.< / span > < span class = "n" > cdist< / span > < span class = "o" > /< / span > < span class = "n" > manifest< / span > < span class = "o" > /< / span > < span class = "n" > sample< / span > < span class = "n" > test< / span > < span class = "o" > .< / span > < span class = "n" > ungleich< / span > < span class = "o" > .< / span > < span class = "n" > ch< / span >
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< / pre > < / div >
< / div >
< p > After cdist configuration is successfully finished our host is ready.< / p >
< / div >
< div class = "section" id = "creating-python-bottle-application" >
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< h2 > 8.9. Creating python bottle application< a class = "headerlink" href = "#creating-python-bottle-application" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > We now need to create Bottle application. As you remember from the beginning
of this walkthrough our type does not create the actual python application,
its intention is only to configure hosing for specified user and project.
It is up to the user to create his/her applications.< / p >
< p > Become app user:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > su< / span > < span class = "o" > -< / span > < span class = "n" > l< / span > < span class = "n" > app< / span >
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< / pre > < / div >
< / div >
< div class = "section" id = "preparing-database" >
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< h3 > 8.9.1. Preparing database< a class = "headerlink" href = "#preparing-database" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > We need to prepare database for our application. Create table and
insert some items:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > psql< / span > < span class = "o" > -< / span > < span class = "n" > c< / span > < span class = "s2" > " create table items (item varchar(255));" < / span >
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< span class = "n" > psql< / span > < span class = "o" > -< / span > < span class = "n" > c< / span > < span class = "s2" > " insert into items(item) values(' spam' );" < / span >
< span class = "n" > psql< / span > < span class = "o" > -< / span > < span class = "n" > c< / span > < span class = "s2" > " insert into items(item) values(' eggs' );" < / span >
< span class = "n" > psql< / span > < span class = "o" > -< / span > < span class = "n" > c< / span > < span class = "s2" > " insert into items(item) values(' sausage' );" < / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "creating-application" >
2019-05-04 22:18:20 +00:00
< h3 > 8.9.2. Creating application< a class = "headerlink" href = "#creating-application" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Next create sample app:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > cd< / span > < span class = "o" > /< / span > < span class = "n" > home< / span > < span class = "o" > /< / span > < span class = "n" > app< / span > < span class = "o" > /< / span > < span class = "n" > app< / span >
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< span class = "n" > mkdir< / span > < span class = "n" > sample< / span >
< span class = "n" > cd< / span > < span class = "n" > sample< / span >
< / pre > < / div >
< / div >
< p > Create app.py with the following content:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "ch" > #!/usr/bin/env python3< / span >
2019-04-23 18:55:23 +00:00
< span class = "kn" > import< / span > < span class = "nn" > bottle< / span >
< span class = "kn" > import< / span > < span class = "nn" > bottle_pgsql< / span >
< span class = "n" > app< / span > < span class = "o" > =< / span > < span class = "n" > application< / span > < span class = "o" > =< / span > < span class = "n" > bottle< / span > < span class = "o" > .< / span > < span class = "n" > Bottle< / span > < span class = "p" > ()< / span >
< span class = "n" > plugin< / span > < span class = "o" > =< / span > < span class = "n" > bottle_pgsql< / span > < span class = "o" > .< / span > < span class = "n" > Plugin< / span > < span class = "p" > (< / span > < span class = "s1" > ' dbname=app user=app password=' < / span > < span class = "p" > )< / span >
< span class = "n" > app< / span > < span class = "o" > .< / span > < span class = "n" > install< / span > < span class = "p" > (< / span > < span class = "n" > plugin< / span > < span class = "p" > )< / span >
< span class = "nd" > @app< / span > < span class = "o" > .< / span > < span class = "n" > route< / span > < span class = "p" > (< / span > < span class = "s1" > ' /' < / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > show_index< / span > < span class = "p" > (< / span > < span class = "n" > db< / span > < span class = "p" > ):< / span >
< span class = "n" > db< / span > < span class = "o" > .< / span > < span class = "n" > execute< / span > < span class = "p" > (< / span > < span class = "s1" > ' select * from items' < / span > < span class = "p" > )< / span >
< span class = "n" > items< / span > < span class = "o" > =< / span > < span class = "n" > db< / span > < span class = "o" > .< / span > < span class = "n" > fetchall< / span > < span class = "p" > ()< / span > < span class = "ow" > or< / span > < span class = "p" > []< / span >
< span class = "n" > rv< / span > < span class = "o" > =< / span > < span class = "s1" > ' < html> < body> < h3> Items:< /h3> < ul> ' < / span >
< span class = "k" > for< / span > < span class = "n" > item< / span > < span class = "ow" > in< / span > < span class = "n" > items< / span > < span class = "p" > :< / span >
< span class = "n" > rv< / span > < span class = "o" > +=< / span > < span class = "s1" > ' < li> ' < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > item< / span > < span class = "p" > [< / span > < span class = "s1" > ' item' < / span > < span class = "p" > ])< / span > < span class = "o" > +< / span > < span class = "s1" > ' < /li> ' < / span >
< span class = "n" > rv< / span > < span class = "o" > +=< / span > < span class = "s1" > ' < /ul> < /body> < /html> ' < / span >
< span class = "k" > return< / span > < span class = "n" > rv< / span >
< span class = "k" > if< / span > < span class = "vm" > __name__< / span > < span class = "o" > ==< / span > < span class = "s1" > ' __main__' < / span > < span class = "p" > :< / span >
< span class = "n" > bottle< / span > < span class = "o" > .< / span > < span class = "n" > run< / span > < span class = "p" > (< / span > < span class = "n" > app< / span > < span class = "o" > =< / span > < span class = "n" > app< / span > < span class = "p" > ,< / span > < span class = "n" > host< / span > < span class = "o" > =< / span > < span class = "s1" > ' 0.0.0.0' < / span > < span class = "p" > ,< / span > < span class = "n" > port< / span > < span class = "o" > =< / span > < span class = "mi" > 8080< / span > < span class = "p" > )< / span >
< / pre > < / div >
< / div >
< p > Create wsgi.py with the following content:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "kn" > import< / span > < span class = "nn" > os< / span >
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< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > chdir< / span > < span class = "p" > (< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > dirname< / span > < span class = "p" > (< / span > < span class = "vm" > __file__< / span > < span class = "p" > ))< / span >
< span class = "kn" > import< / span > < span class = "nn" > app< / span >
< span class = "n" > application< / span > < span class = "o" > =< / span > < span class = "n" > app< / span > < span class = "o" > .< / span > < span class = "n" > app< / span >
< / pre > < / div >
< / div >
< p > We have configured uWSGI with < strong > touch-reload = $projectname/wsgi.py< / strong > so after
we have changed our < strong > wsgi.py< / strong > file uWSGI reloads the application.< / p >
< p > Our application selects and lists items from < strong > items< / strong > table.< / p >
< / div >
< div class = "section" id = "openning-application" >
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< h3 > 8.9.3. Openning application< a class = "headerlink" href = "#openning-application" title = "Permalink to this headline" > ¶< / a > < / h3 >
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< p > Finally try the application:< / p >
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< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > http< / span > < span class = "p" > :< / span > < span class = "o" > //< / span > < span class = "n" > test< / span > < span class = "o" > .< / span > < span class = "n" > ungleich< / span > < span class = "o" > .< / span > < span class = "n" > ch< / span > < span class = "o" > /< / span >
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< / pre > < / div >
< / div >
< p > It should redirect to HTTPS and return:< / p >
< div class = "highlight docutils container" >
< h3 > Items:< / h3 >
< ul >
< li > spam< / li >
< li > eggs< / li >
< li > sausage< / li >
< / ul > < / div >
< / div >
< / div >
< div class = "section" id = "what-s-next" >
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< h2 > 8.10. What's next?< a class = "headerlink" href = "#what-s-next" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Continue reading next sections ;)< / p >
< / div >
< / div >
< / div >
< / div >
< footer >
< div class = "rst-footer-buttons" role = "navigation" aria-label = "footer navigation" >
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< a href = "man1/cdist.html" class = "btn btn-neutral float-right" title = "9. cdist(1)" accesskey = "n" rel = "next" > Next < span class = "fa fa-arrow-circle-right" > < / span > < / a >
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< a href = "cdist-quickstart.html" class = "btn btn-neutral float-left" title = "7. Quickstart" accesskey = "p" rel = "prev" > < span class = "fa fa-arrow-circle-left" > < / span > Previous< / a >
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< / div >
< hr / >
< div role = "contentinfo" >
< p >
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© Copyright ungleich GmbH 2019
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Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a < a href = "https://github.com/rtfd/sphinx_rtd_theme" > theme< / a > provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
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