Добрый день!
Я новичок в Docker. Разбираюсь со связкой Docker-machine + docker-comppose + consul + consul-template + registator. Нашел статью, в которой есть пример. Но есть некоторые отличия:
Я использую docker-machine:
docker-machine create -d azure --azure-subscription-id \
--azure-ssh-user \
--azure-open-port 80 \
--azure-subnet-prefix 10.0.2.0/24
так же использую docker-compose, а не fig:
app:
image: tutum/hello-world:latest
environment:
SERVICE_NAME: app
SERVICE_TAGS: production
SERVICE_80_NAME: http
SERVICE_80_CHECK_HTTP: .
SERVICE_80_CHECK_INTERVAL: 15
ports:
- "80"
lb:
build: ./
links:
- consul
ports:
- "80:80"
consul:
command: -server -bootstrap -advertise 10.0.2.4
image: gliderlabs/consul-server
ports:
- "8300:8300"
- "8400:8400"
- "8500:8500"
- "8600:53/udp"
#
# Service Discovery - Registrator
#
registrator:
command: -ip=10.0.2.4 consul://consul:8500
image: gliderlabs/registrator:latest
links:
- consul
volumes:
- "/var/run/docker.sock:/tmp/docker.sock"
Проблема в следующем:
После запуска контейнеров приложение не регистрируется и соответственно, при обращении на 80 порт, nginx возвращает ошибку 502.
вывод консоли при этом:
docker-compose up
Starting dockerloadbalancer_app_1 ...
Starting dockerloadbalancer_app_1
Starting dockerloadbalancer_consul_1 ...
Starting dockerloadbalancer_consul_1 ... done
Starting dockerloadbalancer_lb_1 ...
Starting dockerloadbalancer_registrator_1 ...
Starting dockerloadbalancer_lb_1 ... done ... done
Starting dockerloadbalancer_registrator_1
Attaching to dockerloadbalancer_app_1, dockerloadbalancer_consul_1, dockerloadbalancer_registrator_1, dockerloadbalancer_lb_1
consul_1 | ==> WARNING: Bootstrap mode enabled! Do not enable unless necessary
consul_1 | ==> Starting Consul agent...
consul_1 | ==> Starting Consul agent RPC...
registrator_1 | 2017/08/30 05:09:13 Starting registrator v7 ...
registrator_1 | 2017/08/30 05:09:13 Forcing host IP to 10.0.2.4
registrator_1 | 2017/08/30 05:09:13 Using consul adapter: consul://consul:8500
registrator_1 | 2017/08/30 05:09:13 Connecting to backend (0/0)
lb_1 | nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
consul_1 | ==> Consul agent running!
consul_1 | Node name: '66269e63b117'
consul_1 | Datacenter: 'dc1'
consul_1 | Server: true (bootstrap: true)
consul_1 | Client Addr: 0.0.0.0 (HTTP: 8500, HTTPS: -1, DNS: 8600, RPC: 8400)
consul_1 | Cluster Addr: 10.0.2.4 (LAN: 8301, WAN: 8302)
consul_1 | Gossip encrypt: false, RPC-TLS: false, TLS-Incoming: false
consul_1 | Atlas:
consul_1 |
consul_1 | ==> Log data will now stream in as it occurs:
consul_1 |
consul_1 | 2017/08/30 05:09:09 [INFO] raft: Node at 10.0.2.4:8300 [Follower] entering Follower state
consul_1 | 2017/08/30 05:09:09 [INFO] serf: EventMemberJoin: 66269e63b117 10.0.2.4
consul_1 | 2017/08/30 05:09:09 [INFO] consul: adding LAN server 66269e63b117 (Addr: 10.0.2.4:8300) (DC: dc1)
consul_1 | 2017/08/30 05:09:09 [INFO] serf: EventMemberJoin: 66269e63b117.dc1 10.0.2.4
consul_1 | 2017/08/30 05:09:09 [INFO] consul: adding WAN server 66269e63b117.dc1 (Addr: 10.0.2.4:8300) (DC: dc1)
consul_1 | 2017/08/30 05:09:09 [ERR] agent: failed to sync remote state: No cluster leader
consul_1 | 2017/08/30 05:09:10 [WARN] raft: Heartbeat timeout reached, starting election
consul_1 | 2017/08/30 05:09:10 [INFO] raft: Node at 10.0.2.4:8300 [Candidate] entering Candidate state
consul_1 | 2017/08/30 05:09:10 [INFO] raft: Election won. Tally: 1
consul_1 | 2017/08/30 05:09:10 [INFO] raft: Node at 10.0.2.4:8300 [Leader] entering Leader state
consul_1 | 2017/08/30 05:09:10 [INFO] consul: cluster leadership acquired
consul_1 | 2017/08/30 05:09:10 [INFO] consul: New leader elected: 66269e63b117
consul_1 | 2017/08/30 05:09:10 [INFO] raft: Disabling EnableSingleNode (bootstrap)
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced node info
consul_1 | 2017/08/30 05:09:13 [WARN] Service name "dockerloadbalancer_lb-80" will not be discoverable via DNS due to invalid characters. Valid characters include all alpha-numerics and dashes.
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced service '54a66f0e387b:dockerloadbalancer_lb_1:80'
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced service '54a66f0e387b:dockerloadbalancer_consul_1:8400'
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced service '54a66f0e387b:dockerloadbalancer_consul_1:8500'
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced service '54a66f0e387b:dockerloadbalancer_consul_1:53:udp'
registrator_1 | 2017/08/30 05:09:13 consul: current leader 10.0.2.4:8300
registrator_1 | 2017/08/30 05:09:13 Listening for Docker events ...
registrator_1 | 2017/08/30 05:09:13 Syncing services on 4 containers
registrator_1 | 2017/08/30 05:09:13 added: 07b7de523f24 54a66f0e387b:dockerloadbalancer_lb_1:80
registrator_1 | 2017/08/30 05:09:13 ignored: 07b7de523f24 port 443 not published on host
registrator_1 | 2017/08/30 05:09:13 ignored: 54a66f0e387b no published ports
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8302 not published on host
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8600 not published on host
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8600 not published on host
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8301 not published on host
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8302 not published on host
registrator_1 | 2017/08/30 05:09:13 added: 66269e63b117 54a66f0e387b:dockerloadbalancer_consul_1:8400
registrator_1 | 2017/08/30 05:09:13 added: 66269e63b117 54a66f0e387b:dockerloadbalancer_consul_1:8500
registrator_1 | 2017/08/30 05:09:13 added: 66269e63b117 54a66f0e387b:dockerloadbalancer_consul_1:53:udp
registrator_1 | 2017/08/30 05:09:13 added: 66269e63b117 54a66f0e387b:dockerloadbalancer_consul_1:8300
registrator_1 | 2017/08/30 05:09:13 ignored: 66269e63b117 port 8301 not published on host
registrator_1 | 2017/08/30 05:09:13 register failed: &{54a66f0e387b:dockerloadbalancer_app_1:80 http 32780 10.0.2.4 [production] map[check_http:. check_interval:15] 0 {32780 10.0.2.4 80 172.17.0.2 tcp 819676e02aa1 819676e02aa10e14b1eca7e80d934f77932e66001bb24f237c5cde7035fcf509 0xc2080f4a80}} Unexpected response code: 400 (Request decode failed: time: missing unit in duration 15)
consul_1 | 2017/08/30 05:09:13 [INFO] agent: Synced service '54a66f0e387b:dockerloadbalancer_consul_1:8300'
lb_1 | nginx: configuration file /etc/nginx/nginx.conf test is successful
lb_1 | 2017/08/30 05:09:44 [error] 14#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 217.118.84.156, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:65535/", host: "13.64.158.172"
lb_1 | 217.118.84.156 - - [30/Aug/2017:05:09:44 +0000] "GET / HTTP/1.1" 502 575 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36" "-"
lb_1 | 2017/08/30 05:09:45 [error] 14#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 217.118.84.156, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:65535/favicon.ico", host: "13.64.158.172", referrer: "http://13.64.158.172/"
Подскажите в чем может быть проблема?
Ответ
Ошибка в статье, в файл nginx.conf, должен выглядеть так:
upstream app {
least_conn;
{{range service "production.http"}}
server {{.Address}}:{{.Port}} max_fails=3 fail_timeout=60 weight=1;
{{else}}
server 127.0.0.1:65333; # force a 501
{{end}}
}
server {
listen 80 default_server;
location / {
proxy_pass http://app;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
}
}
server {
listen 65333;
location / {
types {
application/json json;
}
default_type "application/json";
return 501 '{
"success": false,
"deploy": false,
"status": 501,
"body": {
"message": "No available upstream servers at current route from consul"
}
}';
}
}
Полностью рабочий пример выложил сюда
