106Wordpress - amagerard/Docker GitHub Wiki

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1- Docker	2- Firewall	3- Portainer	4- Drupal	5- Joomla
6-Wordpress	7-Xwiki	8- Mediawiki
Casaos	Zimaos

6. Wordpress.

Wordpress is a Content Management System.
It is possible to create, manage and easily modify a website.

This procedure is based on this example.

Docker server ip :192.168.60.55/24
Your username: teacher
Your home directory:/home/teacher

6.1 Create Network and Volumes with Portainer.

Open Portainer for create network and volumes.
http://192.168.60.55:9000

Click on Environments Local.

6.1.1 Each Wordpress instance has its container.

cnt_wps_wb_number.
cnt_wps_db_number.
Containers will be created from the docker compose command line.

6.1.2 Each Wordpress instance has its network.

net_wps_number.

Create net_wps_1 .

Select Networks.  
Add network.  
Name : net_wps_1  
Add Driver options:  
Name : com.docker.network.bridge.name   value : net_wps_1  
Create the network.

Name: com.docker.network.bridge.name value : net_wps_1 is not specified, docker will give it a name as br-XXXX.

6.1.3 Each Wordpress instance has its volume.

vol_wps_wb_number.
vol_wps_db_number.
Create these volumes.

Select Volumes.  
Add volume.  
Name: vol_wps_wb_1  
Create the volume.  
Add the volume.  
Name: vol_wps_db_1  
Create the volume.

6.1.4 Information.

Command lines to create the netwok and volumes without portainer.
docker network create --opt com.docker.network.bridge.name=net_wps_1 net_wps_1
docker volume create vol_wps_wb_1
docker volume create vol_wps_db_1

6.2 Give permissions to www-dock and mysql-dock for volumes.

chown -R www-dock:www-dock /var/lib/docker/volumes/vol_wps_wb_1
chown -R mysql-dock:mysql-dock /var/lib/docker/volumes/vol_wps_db_1

6.3 Install Wordpress with a yaml script.

Logging with your username.
mkdir /home/teacher/wordpress
vi /home/teacher/wordpress/instance_wordpress_1.yaml

# 2025, January  
# replace number  by 1 or 2 or ... until 9  
# example n = 1  
# port published wb = 8081  
# port published db = 33771  
# ip = 192.168.60.55  
# you must create network net_wps_1    from portainer before installing wordpress.  
# you must create volume vol_wps_wb_1  from portainer before installing wordpress.  
# you must create volume vol_wps_db_1  from portainer before installing wordpress.  
#  
# Be careful with the tab, the indentation is 4 characters.  
#  
name: wordpress_1  ## change  n of wordpress_n  
services:  
    wordpress:  
        cpu_shares: 90  
        command: []  
        container_name: cnt_wps_wb_1  ## change  n  of cnt_wps_wb_n  
        depends_on:  
            wordpressdb:  
                condition: service_started  
                restart: true  
                required: true  
        deploy:  
            resources:  
                limits:  
                    memory: 2048M  
        environment:  
            - WORDPRESS_DB_HOST=172.18.0.1:33771  ##<ip gateway network net_wps_1>:port published mariadb  
            - WORDPRESS_DB_NAME=wordpress  
            - WORDPRESS_DB_USER=wordpress  
            - WORDPRESS_DB_PASSWORD=password  ## as you want  
        hostname: cnt_wps_wb_1  ## change n to cnt_wps_wb_n  
        image: wordpress:latest  
        links:  
            - wordpressdb:mariadb  
        ports:  
            - target: 80  
              published: '8081'  ## change  n of 808n  
              protocol: tcp  
        restart: always  
        volumes:  
            - /var/lib/docker/volumes/vol_wps_wb_1/_data:/var/www/html # create volume from portainer and change  n of vol_wps_wb_n  
        user: 2001:2001  ## www-dock gid ., Put '#' before the line for casaos or zimaos  
        devices: []  
        cap_add: []  
        network_mode: net_wps_1 # create network  from portainer and change  n of net_wps_1  
        privileged: false  
    wordpressdb:  
        cpu_shares: 90  
        command: []  
        container_name: cnt_wps_db_1  ## change  n  of  cnt_wps_db_n  
        deploy:  
            resources:  
                limits:  
                    memory: 2048M  
        environment:  
            - MYSQL_ROOT_PASSWORD=password ## it is the same MYSQL_PASSWORD  and WORDPRESS_DB_PASSWORD  
            - MYSQL_DATABASE=wordpress  
            - MYSQL_USER=wordpress  
            - MYSQL_PASSWORD=password  ## it is the same MYSQL_PASSWORD  and WORDPRESS_DB_PASSWORD  
  
        hostname: cnt_wps_db_1 ## change  n of cnt_wps_db_n  
        image: mariadb:latest  
        ports:  
            - target: 3306  
              published: '33771'  ## change  n to  3377n  
              protocol: tcp  
        restart: always  
        volumes:  
            - /var/lib/docker/volumes/vol_wps_db_1/_data:/var/lib/mysql  ## create volume from portainer and change  n of vol_wps_db_n  
        user: 2002:2002  ## mysql-dock gid ., Put '#' before the line for casaos or zimaos  
        devices: []  
        cap_add: []  
        network_mode: net_wps_1  # create network  from portainer and change  n of net_wps_1  
        privileged: false

Installation.
docker compose -f /home/teacher/wordpress/instance_wordpress_1.yaml up
Crtl+C to stop.

Information.
If you want to change your Wordpress instance in 2,
edit this file and replace _1 by _2.
Then replace the port 8081 by 8082
and 33771 by 33772.

6.4 Attach volumes with containers.

On portainer, by default the volumes are marked Unused.

Open Portainer.
http://192.168.60.55:9000

Click on Environments Local.

Select Container cnt_wps_wb_1.
Click on cnt_wps_wb_1.
Click Duplicate/Edit.
Advanced container settings.
Click on Volumes.
Volumes mapping.
Choose container /var/www/html.
Click on Volume.
Select a Volume.
Choose vol_wps_wb_1 - local.
Click on Deploy the container.
Click on Replace.

Select Container cnt_wps_db_1.
Click on cnt_wps_db_1.
Click Duplicate/Edit.
Advanced container settings.
Click on Volumes.
Volumes mapping.
Choose container /var/lib/mysql.
Click on Volume.
Select a Volume.
Choose vol_wps_db_1 - local.
Click on Deploy the container.
Click on Replace.

6.5 Open Wordpress.

6.5.1 Firewall.

Find your interface for network net_wps_1.
The gateway is displayed in Portainer Networks.
Example:
The net_wps_1 gateway is 172.18.0.1/16.
Network interface is net_wps_1.

ifconfig

net_wps_1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500  
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255  
        ether 02:42:6a:71:3d:51  txqueuelen 0  (Ethernet)  
        RX packets 10742  bytes 23229052 (22.1 MiB)  
        RX errors 0  dropped 0  overruns 0  frame 0  
        TX packets 12571  bytes 5854522 (5.5 MiB)  
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Add rules on firewall.
iptables -t nat -A POSTROUTING ! -o net_wps_1 -s 172.18.0.0/16 -j MASQUERADE
ufw route allow in on net_wps_1 out on eth0 to any from any
ufw allow in from any to any port 8081

The postrouting iptable rule disappears after restarting the server.
The solution is to add the rule in crontab.
Add postrouting iptable in /opt/docker/postrouting_sh.
vi /opt/docker/postrouting_sh

iptables -t nat -A POSTROUTING ! -o net_wps_1  -s 172.18.0.0/16 -j MASQUERADE

Don't forget to delete line if you no longer use this iptable rule.

Information.
To delete an iptable postrouting rule without reboot.
Postrouting line number.
iptables --list -v --line-numbers -t nat
Remove rule ( 1 is the line number).
iptables -t nat -D POSTROUTING 1

6.5.2 First access Wordpress.

http://192.168.60.55:8081

Select language : English.
Continue.
Site Title : mybeautifulweb.
Username: as you want.
Password: as you want.
Confirm use a weak password : as you want.
Your Email: as you want.
Search engine visibility : as you want.
Install WordPress.
Login.
Username: your username.
Password: your password.

Wordpress is ready.

To return to the administrator page.
http://192.168.60.55:8081/wp-admin