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Debian + Docker Swarm + Container

Debian + Docker Compose

root@web:~# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                    NAMES
13ee0aae751b        mariadb             "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:3306->3306/tcp   root_db_1
14sd00drg3gr        php7:fpm            "docker-php-entryp…"     About a minute ago   Up About a minute   9000/tcp                 sui-php
25dcw4ht220a        nginx               "/usr/sbin/nginxctl…"    About a minute ago   Up About a minute   0.0.0.0:80->80/tcp       root_web_1

docker-compose.yml

version: "3"
services:
  nginx:
    restart: unless-stopped
    image: nginx:latest
    container_name: nginx
    networks:
      - mynet
    ports:
      - 80:80
      - 443:443
  php70:
    image: php:7.0-fpm
    container_name: php70
    restart: unless-stopped
    networks:
      - mynet
    volumes:
      - ./projects:/projects
networks:
  mynet:
    external: true

Nginx configuration

server {
    index index.php index.html;
    server_name php-docker.local;
    error_log  /var/log/nginx/error.log;
    access_log /var/log/nginx/access.log;
    root /code;

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass php70:9000;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
    }
}

Create volumes for WordPress

# docker volume create --name wordpress_data
# docker run -d --name wordpress \
  -p 8080:80 -p 8443:8443 \
  --env ALLOW_EMPTY_PASSWORD=yes \
  --env WORDPRESS_DATABASE_USER=bn_wordpress \
  --env WORDPRESS_DATABASE_PASSWORD=******* \
  --env WORDPRESS_DATABASE_NAME=rock007_wordpress \
  --network wordpress-network \
  --volume wordpress_data:/rock007/wordpress \
  bitnami/wordpress-nginx:latest

nginx reverse proxy

add_header X-Frame-Options SAMEORIGIN;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_hide_header X-Frame-Options;

net cluster

root@web:~# docker service ps swarm_cluster
ID                  NAME                IMAGE                     NODE                     DESIRED STATE       CURRENT STATE                
bdjrhe896xye        swarm_cluster.1     wordpress_server:latest   node02.stps.tn.edu.tw    Running             Running about a minute ago
fcq9es71z8zf        swarm_cluster.2     drupal_server:latest      node01.stps.tn.edu.tw    Running             Running about a minute ago
xghvm62h2o4x        swarm_cluster.3     apache2_server:latest     node03.stps.tn.edu.tw    Running             Running 7 seconds ago

docker stats

#docker stats --no-stream
CONTAINER           CPU %               MEM USAGE / LIMIT       MEM %               NET I/O               BLOCK I/O             PIDS
f21a35e99e00        0.06%               2.325 GiB / 15.26 GiB   15.33%              559.7 kB / 465.6 kB   565.9 MB / 589.8 kB   0
a0f6f6adcb13        0.03%               2.173 GiB / 15.26 GiB   14.75%              5.785 MB / 5.968 MB   589 MB / 23.67 MB     0
aeaeb46910ad        0.00%               80.13 MiB / 15.26 GiB   0.53%               384.8 kB / 66.88 kB   161.9 MB / 237.6 kB   0
bf6192f34bf9        0.00%               14.17 MiB / 15.26 GiB   0.14%               901 kB / 984.7 kB     162.7 MB / 0 B        0

結論

1.遇到非預期停電，這些containers花費很多時間reboot，最好有UPS與RAID 0＋1
2.這台1U DELL屬低階伺服器，且風扇太吵考慮停用，未來改桌上型PC做docker意義不大
3.目前工作環境不需要做負載平衡，一台Debian就綽綽有餘

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