mirror of
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206 lines
6.1 KiB
ReStructuredText
206 lines
6.1 KiB
ReStructuredText
.. _container_deployment:
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*****************************
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`Container Deployment`:index:
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*****************************
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pgAdmin can be deployed in a container using the image at:
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https://hub.docker.com/r/dpage/pgadmin4/
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PostgreSQL Utilities
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********************
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The PostgreSQL utilities *pg_dump*, *pg_dumpall*, *pg_restore* and *psql* are
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included in the container to allow backups to be created and restored and other
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maintenance functions to be executed. Multiple versions are included in the
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following directories to allow use with different versions of the database
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server:
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* PostgreSQL 9.4: */usr/local/pgsql-9.4*
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* PostgreSQL 9.5: */usr/local/pgsql-9.5*
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* PostgreSQL 9.6: */usr/local/pgsql-9.6*
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* PostgreSQL 10: */usr/local/pgsql-10*
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* PostgreSQL 11: */usr/local/pgsql-11*
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The most recent version of the utilities is used by default; this may be
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changed in the :ref:`preferences`.
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Environment Variables
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*********************
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The container will accept the following variables at startup:
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*PGADMIN_DEFAULT_EMAIL*
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This is the email address used when setting up the initial administrator account
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to login to pgAdmin. This variable is required and must be set at launch time.
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*PGADMIN_DEFAULT_PASSWORD*
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This is the password used when setting up the initial administrator account to
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login to pgAdmin. This variable is required and must be set at launch time.
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*PGADMIN_ENABLE_TLS*
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Default: <null>
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If left un-set, the container will listen on port 80 for connections in plain
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text. If set to any value, the container will listen on port 443 for TLS
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connections.
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When TLS is enabled, a certificate and key must be provided. Typically these
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should be stored on the host file system and mounted from the container. The
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expected paths are /certs/server.crt and /certs/server.key
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*PGADMIN_LISTEN_ADDRESS*
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Default: [::]
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Specify the local address that the servers listens on. The default should work
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for most users - in IPv4-only environments, this may need to be set to
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127.0.0.1.
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*PGADMIN_LISTEN_PORT*
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Default: 80 or 443 (if TLS is enabled)
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Allows the port that the server listens on to be set to a specific value rather
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than using the default.
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*PGADMIN_SERVER_JSON_FILE*
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Default: /pgadmin4/servers.json
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Override the default file path for the server definition list. See the
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/pgadmin4/servers.json mapped file below for more information.
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*GUNICORN_THREADS*
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Default: 25
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Adjust the number of threads the Gunicorn server uses to handle incoming
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requests. This should typically be left as-is, except in highly loaded systems
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where it may be increased.
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Mapped Files and Directories
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****************************
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The following files or directories can be mapped from the container onto the
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host machine to allow configuration to be customised and shared between
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instances:
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*/var/lib/pgadmin*
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This is the working directory in which pgAdmin stores session data, user files,
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configuration files, and it's configuration database. Mapping this directory
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onto the host machine gives you an easy way to maintain configuration between
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invocations of the container.
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*/pgadmin4/config_local.py*
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This file can be used to override configuration settings in pgAdmin. Settings
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found in config.py can be overridden with deployment specific values if
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required.
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*/pgadmin4/servers.json*
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If this file is mapped, server definitions found in it will be loaded at launch
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time. This allows connection information to be pre-loaded into the instance of
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pgAdmin in the container. Note that server definitions are only loaded on first
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launch, i.e. when the configuration database is created, and not on subsequent
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launches using the same configuration database.
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*/certs/server.cert*
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If TLS is enabled, this file will be used as the servers TLS certificate.
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*/certs/server.key*
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If TLS is enabled, this file will be used as the key file for the servers TLS
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certificate.
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Examples
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********
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Run a simple container over port 80:
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.. code-block:: bash
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docker pull dpage/pgadmin4
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docker run -p 80:80 \
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-e "PGADMIN_DEFAULT_EMAIL=user@domain.com" \
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-e "PGADMIN_DEFAULT_PASSWORD=SuperSecret" \
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-d dpage/pgadmin4
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Run a TLS secured container using a shared config/storage directory in
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/private/var/lib/pgadmin on the host, and servers pre-loaded from
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/tmp/servers.json on the host:
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.. code-block:: bash
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docker pull dpage/pgadmin4
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docker run -p 443:443 \
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-v "/private/var/lib/pgadmin:/var/lib/pgadmin" \
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-v "/path/to/certificate.cert:/certs/server.cert" \
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-v "/path/to/certificate.key:/certs/server.key" \
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-v "/tmp/servers.json:/servers.json" \
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-e "PGADMIN_DEFAULT_EMAIL=user@domain.com" \
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-e "PGADMIN_DEFAULT_PASSWORD=SuperSecret" \
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-e "PGADMIN_ENABLE_TLS=True" \
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-d dpage/pgadmin4
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Reverse Proxying
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****************
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Sometimes it's desirable to have users connect to pgAdmin through a reverse
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proxy rather than directly to the container it's running in. The following
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examples show how this can be achieved. In all cases, pgAdmin is running in a
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container on the same host, with port 5050 on the host mapped to port 80 on the
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container, for example:
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.. code-block:: bash
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docker pull dpage/pgadmin4
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docker run -p 5050:80 \
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-e "PGADMIN_DEFAULT_EMAIL=user@domain.com" \
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-e "PGADMIN_DEFAULT_PASSWORD=SuperSecret" \
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-d dpage/pgadmin4
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HTTP via Nginx
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--------------
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A configuration similar to the following can be used to create a simple HTTP
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reverse proxy listening for all hostnames with Nginx:
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.. code-block:: nginx
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server {
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listen 80;
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server_name _;
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location / {
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proxy_set_header Host $host;
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proxy_pass http://localhost:5050/;
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proxy_redirect off;
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}
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}
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If you wish to host pgAdmin under a subdirectory rather than on the root of the
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server, you must specify the location and set the X-Script-Name header which
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tells the pgAdmin container how to rewrite paths:
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.. code-block:: nginx
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server {
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listen 80;
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server_name _;
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location /pgadmin4/ {
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proxy_set_header X-Script-Name /pgadmin4;
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proxy_set_header Host $host;
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proxy_pass http://localhost:5050/;
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proxy_redirect off;
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}
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}
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