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Made the instructions more simple (moved the nfs-volume example to another file)

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Removed he part around variable substitution as we can use a "trick"
This commit is contained in:
ofthesun9
2018-10-18 18:46:59 +00:00
parent 6bd365e771
commit 9c639eebd4
2 changed files with 394 additions and 155 deletions
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docs/swarm/master/README.md
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@@ -29,34 +29,7 @@ mzrm9nbdggsfz4sgq6dhs5i6n flying-dutchman Ready Active
### Volume definition
For data persistance (the Mailu services might be launched/relaunched on any of the swarm nodes), we need to have Mailu data stored in a manner accessible by every manager or worker in the swarm.
Hereafter we will use a NFS share:
```bash
core@coreos-01 ~ $ showmount -e 192.168.0.30
Export list for 192.168.0.30:
/mnt/Pool1/pv 192.168.0.0
```
on the nfs server, I am using the following /etc/exports
```bash
$more /etc/exports
/mnt/Pool1/pv -alldirs -mapall=root -network 192.168.0.0 -mask 255.255.255.0
```
on the nfs server, I created the Mailu directory (in fact I copied a working Mailu set-up)
```bash
$mkdir /mnt/Pool1/pv/mailu
```
On your manager node, mount the nfs share to check that the share is available:
```bash
core@coreos-01 ~ $ sudo mount -t nfs 192.168.0.30:/mnt/Pool1/pv/mailu /mnt/local/
```
If this is ok, you can umount it:
```bash
core@coreos-01 ~ $ sudo umount /mnt/local/
```
## Networking mode
Hereafter we will assume that "Mailu Data" is available on every node at "$ROOT/certs:/certs". (GlusterFS and nfs shares have been successfully used)
On this example, we are using:
- the mesh routing mode (default mode). With this mode, each service is given a virtual IP adress and docker manages the routing between this virtual IP and the container(s) providing this service.
- the default ingress mode.
@@ -94,10 +67,13 @@ As a side effect of this ingress mode "feature", make sure that the ingress subn
- redis, antispam, antivirus, fetchmail, admin, webdav have not been tested (hence replicas=1 in the following docker-compose.yml file)
## Variable substitution and docker-compose.yml
The docker stack deploy command doesn't support variable substitution in the .yml file itself (but we still can use .env file to pass variables to the services). As a consequence we need to adjust the docker-compose file in order to :
- remove all variables : $VERSION , $BIND_ADDRESS4 , $BIND_ADDRESS6 , $ANTIVIRUS , $WEBMAIL , etc
The docker stack deploy command doesn't support variable substitution in the .yml file itself. As a consequence, we need to use the following work-around:
``` echo "$(docker-compose -f /mnt/docker/apps/mailu/docker-compose.yml config 2>/dev/null)" | docker stack deploy -c- mailu ```
We need also to:
- change the way we define the volumes (nfs share in our case)
- add a deploy section for every service
- the way the ports are defined for the front service
## Docker compose
An example of docker-compose-stack.yml file is available here:
@@ -109,7 +85,7 @@ version: '3.2'
services:
front:
image: mailu/nginx:master
image: mailu/nginx:$VERSION
restart: always
env_file: .env
ports:
@@ -132,10 +108,7 @@ services:
- target: 587
published: 587
volumes:
# - "$ROOT/certs:/certs"
- type: volume
source: mailu_certs
target: /certs
- "$ROOT/certs:/certs"
deploy:
replicas: 2
@@ -143,118 +116,77 @@ services:
image: redis:alpine
restart: always
volumes:
# - "$ROOT/redis:/data"
- type: volume
source: mailu_redis
target: /data
- "$ROOT/redis:/data"
deploy:
replicas: 1
imap:
image: mailu/dovecot:master
image: mailu/dovecot:$VERSION
restart: always
env_file: .env
environment:
- POD_ADDRESS_RANGE=10.0.1.0/24
volumes:
# - "$ROOT/data:/data"
- type: volume
source: mailu_data
target: /data
# - "$ROOT/mail:/mail"
- type: volume
source: mailu_mail
target: /mail
# - "$ROOT/overrides:/overrides"
- type: volume
source: mailu_overrides
target: /overrides
- "$ROOT/mail:/mail"
- "$ROOT/overrides:/overrides"
depends_on:
- front
deploy:
replicas: 2
smtp:
image: mailu/postfix:master
image: mailu/postfix:$VERSION
restart: always
env_file: .env
environment:
- POD_ADDRESS_RANGE=10.0.1.0/24
volumes:
# - "$ROOT/data:/data"
- type: volume
source: mailu_data
target: /data
# - "$ROOT/overrides:/overrides"
- type: volume
source: mailu_overrides
target: /overrides
- "$ROOT/overrides:/overrides"
depends_on:
- front
deploy:
replicas: 2
antispam:
image: mailu/rspamd:master
image: mailu/rspamd:$VERSION
restart: always
env_file: .env
environment:
- POD_ADDRESS_RANGE=10.0.1.0/24
volumes:
- "$ROOT/filter:/var/lib/rspamd"
- "$ROOT/dkim:/dkim"
- "$ROOT/overrides/rspamd:/etc/rspamd/override.d"
depends_on:
- front
volumes:
# - "$ROOT/filter:/var/lib/rspamd"
- type: volume
source: mailu_filter
target: /var/lib/rspamd
# - "$ROOT/dkim:/dkim"
- type: volume
source: mailu_dkim
target: /dkim
# - "$ROOT/overrides/rspamd:/etc/rspamd/override.d"
- type: volume
source: mailu_overrides_rspamd
target: /etc/rspamd/override.d
deploy:
replicas: 1
antivirus:
image: mailu/none:master
image: mailu/none:$VERSION
restart: always
env_file: .env
volumes:
# - "$ROOT/filter:/data"
- type: volume
source: mailu_filter
target: /data
- "$ROOT/filter:/data"
deploy:
replicas: 1
webdav:
image: mailu/none:master
image: mailu/none:$VERSION
restart: always
env_file: .env
volumes:
# - "$ROOT/dav:/data"
- type: volume
source: mailu_dav
target: /data
- "$ROOT/dav:/data"
deploy:
replicas: 1
admin:
image: mailu/admin:master
image: mailu/admin:$VERSION
restart: always
env_file: .env
volumes:
# - "$ROOT/data:/data"
- type: volume
source: mailu_data
target: /data
# - "$ROOT/dkim:/dkim"
- type: volume
source: mailu_dkim
target: /dkim
- "$ROOT/data:/data"
- "$ROOT/dkim:/dkim"
- /var/run/docker.sock:/var/run/docker.sock:ro
depends_on:
- redis
@@ -262,28 +194,21 @@ services:
replicas: 1
webmail:
image: "mailu/roundcube:master"
image: mailu/roundcube:$VERSION
restart: always
env_file: .env
volumes:
# - "$ROOT/webmail:/data"
- type: volume
source: mailu_data
target: /data
- "$ROOT/webmail:/data"
depends_on:
- imap
deploy:
replicas: 2
fetchmail:
image: mailu/fetchmail:master
image: mailu/fetchmail:$VERSION
restart: always
env_file: .env
volumes:
# - "$ROOT/data:/data"
- type: volume
source: mailu_data
target: /data
deploy:
replicas: 1
@@ -291,72 +216,29 @@ networks:
default:
external:
name: mailu_default
volumes:
mailu_filter:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/filter"
mailu_dkim:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/dkim"
mailu_overrides_rspamd:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/overrides/rspamd"
mailu_data:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/data"
mailu_mail:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/mail"
mailu_overrides:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/overrides"
mailu_dav:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/dav"
mailu_certs:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/certs"
mailu_redis:
driver_opts:
type: "nfs"
o: "addr=192.168.0.30,nolock,soft,rw"
device: ":/mnt/Pool1/pv/mailu/redis"
```
## Deploy Mailu on the docker swarm
Run the following command:
```bash
docker stack deploy -c docker-compose-stack.yml mailu
echo "$(docker-compose -f /mnt/docker/apps/mailu/docker-compose.yml config 2>/dev/null)" | docker stack deploy -c- mailu
```
See how the services are being deployed:
```bash
core@coreos-01 ~ $ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
ywnsetmtkb1l mailu_antivirus replicated 1/1 mailu/none:1.5
pqokiaz0q128 mailu_fetchmail replicated 1/1 mailu/fetchmail:1.5
ywnsetmtkb1l mailu_antivirus replicated 1/1 mailu/none:master
pqokiaz0q128 mailu_fetchmail replicated 1/1 mailu/fetchmail:master
```
check a specific service:
```bash
core@coreos-01 ~ $ docker service ps mailu_fetchmail
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
tbu8ppgsdffj mailu_fetchmail.1 mailu/fetchmail:1.5 coreos-01 Running Running 11 days ago
tbu8ppgsdffj mailu_fetchmail.1 mailu/fetchmail:master coreos-01 Running Running 11 days ago
```
You might also have a look on the logs:
```bash
core@coreos-01 ~ $ docker service logs -f mailu_fetchmail
```
## Remove the stack