Dovecot Docker kasutamine

Sissejuhatus

TODO

Tööpõhimõte

TODO

Ettevalmistused

TODO

• nt Debian v. 13
• Dockerhost - docker-ce

Dovecot paigaldamine

Docker compose

root@dh-dovecot:~# cat /srv/dovecot/dc/docker-compose-dovecot.yml
name: p_dovecot

services:
  svc_dovecot:
    image: "dovecot/dovecot:2.4.4"
    container_name: "cn_dovecot"
    restart: unless-stopped
    environment:
      TZ: "Europe/Tallinn"
    ports:
      - "0.0.0.0:143:31143"
      - "0.0.0.0:4190:34190"
    volumes:
      - "/srv/dovecot/volume/srv/vmail:/srv/vmail"
      - "/srv/dovecot/volume/etc/dovecot/conf.d:/etc/dovecot/conf.d:ro"
      - "/srv/dovecot/volume/etc/dovecot/ssl:/etc/dovecot/ssl:ro"
      - "/srv/dovecot/volume/etc/dovecot/passwd:/etc/dovecot/passwd:ro"
      - "/srv/dovecot/volume/etc/dovecot/master-users:/etc/dovecot/master-users:ro"
    networks:
      - nw_dovecot
    logging:
      driver: "journald"
      options:
        tag: "cn_dovecot"

networks:
  nw_dovecot:
    name: nw_dovecot

kus

• TODO

Dovecot seadistamine

Autentse tõmmisega saabuva seadistuse esitamine

root@dh-dovecot:~# cat /srv/dovecot_imre/dc/docker-compose-dovecot.yml
name: p_dovecot_imre

services:
  svc_dovecot_imre:
    image: "dovecot/dovecot:2.4.4"
    container_name: "cn_dovecot_imre"
    restart: unless-stopped
    environment:
      TZ: "Europe/Tallinn"
    ports:
      - "0.0.0.0:31143:31143"
      - "0.0.0.0:34190:34190"
    networks:
      - nw_dovecot_imre
    logging:
      driver: "journald"
      options:
        tag: "cn_dovecot_imre"

networks:
  nw_dovecot_imre:
    name: nw_dovecot_imre

root@dh-dovecot:~# docker run --rm -it --privileged --pid=container:cn_dovecot --net=container:cn_dovecot nicolaka/netshoot find /proc/1/root/etc/dovecot -type f
/proc/1/root/etc/dovecot/conf.d/auth.conf
/proc/1/root/etc/dovecot/conf.d/mail.conf
/proc/1/root/etc/dovecot/conf.d/limits.conf
/proc/1/root/etc/dovecot/conf.d/fts.conf
/proc/1/root/etc/dovecot/conf.d/mail_log.conf
/proc/1/root/etc/dovecot/conf.d/ssl.conf
/proc/1/root/etc/dovecot/vendor.d/rootless.conf
/proc/1/root/etc/dovecot/master-users
/proc/1/root/etc/dovecot/passwd
/proc/1/root/etc/dovecot/dovecot.conf

kus

• TODO

Kuna dovecot tõmmis on väga minimalistlik, siis seal sees toimuva jälgimiseks sobib nö kõrvalt sisse vaatamine teise konteineri abiga

root@dovecot-01:~# docker run --rm -it --pid=container:cn_dovecot --net=container:cn_dovecot --volumes-from cn_dovecot nicolaka/netshoot

kus

• natuke analoogne lähenemine nsenter programmi kasutamisele

Kasumine

TODO

Haldamine

TODO

Dovecot tarkvara uuendamine

TODO

Dovecot 2.2.3 -> 2.4.4 uuendamine

Asjaolud uues versioonis

Postkastide kataloog

Millises kataloogis postkastid asuvad, vanas määras selle üks parameeter

root@postkast:~# doveconf mail_location
mail_location = maildir:/srv/vmail/%d/%n/mail

Uues kolm parameetrit

root@dh-dovecot:~/20260823# docker exec cn_dovecot doveconf mail_driver
mail_driver = maildir

root@dh-dovecot:~/20260823# docker exec cn_dovecot doveconf mail_home
mail_home = /srv/vmail/%{user | domain}/%{user | username}

root@dh-dovecot:~/20260823# docker exec cn_dovecot doveconf mail_path
mail_path = ~/mail

User kasutaja

Vanas versioonis

root@postkast:~# cat /etc/dovecot/conf.d/auth-system.conf.ext
# Authentication for system users. Included from 10-auth.conf.

passdb {
  driver = passwd-file
  args = /etc/dovecot/passwd
}

userdb {
  driver = static
  args = uid=vmail gid=vmail home=/srv/vmail/%d/%n allow_all_users=yes
}

uues versioonis

root@dh-dovecot:~/20260823# cat /srv/dovecot/volume/etc/dovecot/conf.d/auth.conf
auth_mechanisms = plain login

passdb users {
  driver = passwd-file
  passwd_file_path = /etc/dovecot/passwd
}

userdb static {
  fields {
    uid = vmail
    gid = vmail
    home = /srv/vmail/%{user | domain}/%{user | username}
  }
}

...

Master kasutaja

Vanas versioonis

root@postkast:~# cat /etc/dovecot/conf.d/auth-master.conf.ext
passdb {
  driver = passwd-file
  master = yes
  args = /etc/dovecot/master-users
  pass = yes
}

root@postkast:~# grep auth-master.conf.ext /etc/dovecot/conf.d/10-auth.conf
!include auth-master.conf.ext

Uues versioonis

root@dh-dovecot:~/20260823# cat /srv/dovecot/volume/etc/dovecot/conf.d/auth.conf
auth_master_user_separator = *

passdb master {
  driver = passwd-file
  passwd_file_path = /etc/dovecot/master-users
  master = yes
  result_success = continue
}
...

Kasulikud lisamaterjalid

• TODO