我的问题如下：
我创建了一个由两个简单节点组成的小型集群：一个管理器和一个工作器。 在管理器节点上，我为Swarmpit仪表板安装了一个包含Traefik服务的堆栈和一个包含服务的堆栈。 在工作节点上，我安装了带有wordpress服务的堆栈。 我为正确的traefik配置安装了一个名为“ web”的“覆盖”网络。
结果是Traefik仪表板和Swarmpit仪表板均正常工作。 traefik无法“识别”我放在工作节点上的所有内容，因此它不起作用。如果我尝试访问该服务的网页，则会返回错误404
如果将wordpress服务从工作程序节点移动到管理程序节点，它将开始正常工作。 此外，我还可以通过“网络”网络从traefik容器内部ping到wordpress容器，反之亦然
可能是什么问题？
下面是一些配置和日志：
version: "3.7"
networks:
web:
external: true
services:
traefik:
image: traefik:alpine
command:
- --api
- --docker
- --logLevel=DEBUG
networks:
- web
labels:
- traefik.frontend.rule=Host:traefik.mydomain.cloud
- traefik.docker.network=web
- traefik.backend=traefik.mydomain.cloud
- traefik.enable=true
- traefik.port=8080
ports:
- 80:80
- 443:443
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- data:/etc/traefik
deploy:
mode: global
placement:
constraints:
- node.role == manager
volumes:
data:
driver_opts:
type: nfs
o: addr=x.x.x.x,nolock,soft,rw
device: :/var/nfs/traefik
version: "3.7"
networks:
web:
external: true
internal:
external: false
services:
app:
image: wordpress:5.2.1-php7.1-apache
depends_on:
- mysql
networks:
- web
- internal
labels:
- traefik.enable=true
- traefik.frontend.rule=Host:www.mywordpress_test.com
- traefik.backend=www.mywordpress_test.com
- traefik.docker.network=web
- traefik.port=80
environment:
WORDPRESS_DB_HOST: mysql:3306
WORDPRESS_DB_USER: xxxxx
WORDPRESS_DB_PASSWORD: xxxxx
WORDPRESS_DB_NAME: xxxxx
volumes:
- www:/var/www/html
deploy:
placement:
constraints:
- node.role == worker
mysql:
image: mysql:5.7
networks:
- web
- internal
environment:
MYSQL_ROOT_PASSWORD: xxxxx
MYSQL_DATABASE: xxxxx
MYSQL_USER: xxxxx
MYSQL_PASSWORD: xxxxx
volumes:
- db_data:/var/lib/mysql/
- db_init:/docker-entrypoint-initdb.d/
deploy:
placement:
constraints:
- node.role == worker
volumes:
db_init:
driver_opts:
type: nfs
o: addr=x.x.x.x,nolock,soft,rw
device: :/var/nfs/wordpress_test/db/initdb.d
db_data:
driver_opts:
type: nfs
o: addr=x.x.x.x,nolock,soft,rw
device: :/var/nfs/wordpress_test/db/data
www:
driver_opts:
type: nfs
o: addr=x.x.x.x,nolock,soft,rw
device: :/var/nfs/wordpress_test/www
sudo docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
xxxxxx * sw-man-01 Ready Active Leader 18.09.6
xxxxxx sw-wk-01 Ready Active 18.09.6
sudo docker network ls
NETWORK ID NAME DRIVER SCOPE
xxxxxx bridge bridge local
xxxxxx docker_gwbridge bridge local
xxxxxx swarmpit_net overlay swarm
xxxxxx wordpress_test_internal overlay swarm
xxxxxx host host local
xxxxxx ingress overlay swarm
xxxxxx none null local
xxxxxx web overlay swarm
sudo docker network inspect web
[
{
"Name": "web",
"Id": "vdvnirom26xxxxxx",
"Created": "2019-06-17T17:59:52.865557645+02:00",
"Scope": "swarm",
"Driver": "overlay",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "10.0.0.0/24",
"Gateway": "10.0.0.1"
}
]
},
"Internal": false,
"Attachable": true,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"xxxxxx": {
"Name": "swarmpit_app.1.pefyqnzqyhk4lrnkexgs7k4wu",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:6f",
"IPv4Address": "10.0.0.111/24",
"IPv6Address": ""
},
"xxxxxx": {
"Name": "traefik_traefik.pttpmxhv0fsq02zcew5i2qylw.qfrllyuio7yau74ablv0amqut",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:1e",
"IPv4Address": "10.0.0.30/24",
"IPv6Address": ""
},
"lb-web": {
"Name": "web-endpoint",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:04",
"IPv4Address": "10.0.0.4/24",
"IPv6Address": ""
}
},
"Options": {
"com.docker.network.driver.overlay.vxlanid_list": "4097"
},
"Labels": {},
"Peers": [
{
"Name": "xxxxxx",
"IP": "192.168.2.120"
},
{
"Name": "xxxxxx",
"IP": "192.168.2.100"
}
]
}
]
sudo docker container inspect [traefik container id]
[
{
...,
"NetworkSettings": {
"Bridge": "",
"SandboxID": "xxxxxxxx",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"80/tcp": null
},
"SandboxKey": "/var/run/docker/netns/xxxxxxxx",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"ingress": {
"IPAMConfig": {
"IPv4Address": "10.255.0.117"
},
"Links": null,
"Aliases": [
"xxxxxxxx"
],
"NetworkID": "xxxxxxxx",
"EndpointID": "xxxxxxxx",
"Gateway": "",
"IPAddress": "10.255.0.117",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:0a:ff:00:75",
"DriverOpts": null
},
"web": {
"IPAMConfig": {
"IPv4Address": "10.0.0.30"
},
"Links": null,
"Aliases": [
"xxxxxxxx"
],
"NetworkID": "vdvnirom26xxxxxxxx",
"EndpointID": "56a914884xxxxxxxx",
"Gateway": "",
"IPAddress": "10.0.0.30",
"IPPrefixLen": 24,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:0a:00:00:1e",
"DriverOpts": null
}
}
}
}
]
sudo docker network inspect web
[
{
"Name": "web",
"Id": "vdvnirom26xxxxxx",
"Created": "2019-06-19T18:21:15.839889513+02:00",
"Scope": "swarm",
"Driver": "overlay",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "10.0.0.0/24",
"Gateway": "10.0.0.1"
}
]
},
"Internal": false,
"Attachable": true,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"xxxxxx": {
"Name": "wordpress_test_app.1.2mbi7i0u9rn14od5fzw1ycbuk",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:19",
"IPv4Address": "10.0.0.25/24",
"IPv6Address": ""
},
"xxxxxx": {
"Name": "wordpress_test_mysql.1.7qktlbc9ksn164gc292zva12w",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:17",
"IPv4Address": "10.0.0.23/24",
"IPv6Address": ""
},
"lb-web": {
"Name": "web-endpoint",
"EndpointID": "xxxxxx",
"MacAddress": "02:42:0a:00:00:1a",
"IPv4Address": "10.0.0.26/24",
"IPv6Address": ""
}
},
"Options": {
"com.docker.network.driver.overlay.vxlanid_list": "4097"
},
"Labels": {},
"Peers": [
{
"Name": "xxxxxx",
"IP": "192.168.2.120"
},
{
"Name": "xxxxxx",
"IP": "192.168.2.100"
}
]
}
]
sudo docker container inspect [wordpress_test container id]
[
{
...,
"NetworkSettings": {
"Bridge": "",
"SandboxID": "xxxxxxx",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"80/tcp": null,
"9000/tcp": null
},
"SandboxKey": "/var/run/docker/netns/xxxxxxx",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"wordpress_test_internal": {
"IPAMConfig": {
"IPv4Address": "10.0.29.35"
},
"Links": null,
"Aliases": [
"xxxxxxx"
],
"NetworkID": "xxxxxxx",
"EndpointID": "xxxxxxx",
"Gateway": "",
"IPAddress": "10.0.29.35",
"IPPrefixLen": 24,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:0a:00:1d:23",
"DriverOpts": null
},
"web": {
"IPAMConfig": {
"IPv4Address": "10.0.0.25"
},
"Links": null,
"Aliases": [
"xxxxxxx"
],
"NetworkID": "vdvnirom26xxxxxxx",
"EndpointID": "cabe06bc3b1c48acxxxxxxx",
"Gateway": "",
"IPAddress": "10.0.0.25",
"IPPrefixLen": 24,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:0a:00:00:19",
"DriverOpts": null
}
}
}
}
]
答案 0 :(得分：0)
Traefik具有附加的群集模式标志，以支持不同docker节点上的服务。没有此选项，它将仅查看本地运行的容器。使用该选项时，标签需要位于群集服务上，而不是单个容器上。 traefik撰写文件应如下所示：
traefik:
image: traefik:alpine
command:
- --api
- --docker
# enable swarm mode with the next flag
- --docker.swarmmode
# I explictly configure it to watch the docker socket
- --docker.watch
# I avoid automatically exposing every container
- --docker.exposedbydefault=false
- --logLevel=DEBUG
networks:
- web
deploy:
placement:
constraints:
- node.role == manager
labels:
- traefik.frontend.rule=Host:traefik.mydomain.cloud
- traefik.docker.network=web
- traefik.backend=traefik.mydomain.cloud
- traefik.enable=true
- traefik.port=8080
然后您的服务会将标签移到deploy部分下：
services:
app:
image: wordpress:5.2.1-php7.1-apache
depends_on:
- mysql
networks:
- web
- internal
deploy:
labels:
- traefik.enable=true
- traefik.frontend.rule=Host:www.mywordpress_test.com
- traefik.backend=www.mywordpress_test.com
- traefik.docker.network=web
- traefik.port=80
placement:
constraints:
- node.role == worker