UI completely blank

[willzhang]

i can't access the website：http://192.168.92.6:4040/，when i accesss ,it is black.

i use the follow command to install scope

curl -L git.io/scope -o /usr/local/bin/scope
chmod a+x /usr/local/bin/scope
scope launch

and the OS version is:

[root@localhost ~]# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core) 
[root@localhost ~]# uname -sr
Linux 4.16.3-1.el7.elrepo.x86_64
[root@localhost ~]# 

docker container is running:

[root@localhost ~]# docker ps
CONTAINER ID        IMAGE                     COMMAND                  CREATED              STATUS              PORTS               NAMES
8b098a695874        weaveworks/scope:1.10.0   "/home/weave/entrypo…"   About a minute ago   Up About a minute                       weavescope
[root@localhost ~]# 

docker info:

[root@localhost ~]# docker info
Containers: 1
 Running: 1
 Paused: 0
 Stopped: 0
Images: 32
Server Version: 18.09.0
Storage Driver: overlay
 Backing Filesystem: xfs
 Supports d_type: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: c4446665cb9c30056f4998ed953e6d4ff22c7c39
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.16.3-1.el7.elrepo.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.925GiB
Name: localhost.localdomain
ID: FHGI:SFWY:IVIZ:FEBC:CKZL:WUUB:LWAS:IP7Y:OKYD:VW6G:4P3N:N2JD
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: willdockerhub
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Registry Mirrors:
 https://uyah70su.mirror.aliyuncs.com/
Live Restore Enabled: false
Product License: Community Engine

[root@localhost ~]# 

the scope logs:

[root@localhost ~]# docker logs -f weavescope 
time="2018-11-23T04:55:45Z" level=info msg="publishing to: 127.0.0.1:4040"
<probe> INFO: 2018/11/23 04:55:45.268861 Basic authentication disabled
<app> INFO: 2018/11/23 04:55:45.335434 app starting, version 1.10.0, ID 14fd8cdfcf95dff
<app> INFO: 2018/11/23 04:55:45.335491 command line args: --mode=app --probe.docker=true
<app> INFO: 2018/11/23 04:55:45.336273 Basic authentication disabled
<probe> INFO: 2018/11/23 04:55:45.346214 command line args: --mode=probe --probe.docker=true
<probe> INFO: 2018/11/23 04:55:45.346271 probe starting, version 1.10.0, ID 5563eda8db2f90f4
<app> INFO: 2018/11/23 04:55:45.349280 listening on :4040
<probe> ERRO: 2018/11/23 04:55:45.370749 Error fetching app details: Get http://127.0.0.1:4040/api: dial tcp 127.0.0.1:4040: connect: connection refused
<probe> WARN: 2018/11/23 04:55:45.370811 Cannot resolve 'scope.weave.local.': dial tcp 172.17.0.1:53: connect: connection refused
<app> WARN: 2018/11/23 04:55:45.438030 Error updating weaveDNS, backing off 20s: Error running weave ps: exit status 1: "Link not found\n". If you are not running Weave Net, you may wish to suppress this warning by launching scope with the `--weave=false` option.
<probe> WARN: 2018/11/23 04:55:45.926175 Error collecting weave status, backing off 10s: Get http://127.0.0.1:6784/report: dial tcp 127.0.0.1:6784: connect: connection refused. If you are not running Weave Net, you may wish to suppress this warning by launching scope with the `--weave=false` option.
<probe> INFO: 2018/11/23 04:55:46.378314 Control connection to 127.0.0.1 starting
<probe> INFO: 2018/11/23 04:55:48.921778 Publish loop for 127.0.0.1 starting
<probe> WARN: 2018/11/23 04:55:55.927365 Error collecting weave status, backing off 20s: Get http://127.0.0.1:6784/report: dial tcp 127.0.0.1:6784: connect: connection refused. If you are not running Weave Net, you may wish to suppress this warning by launching scope with the `--weave=false` option.
<probe> ERRO: 2018/11/23 04:56:01.957928 Error checking version: Get https://checkpoint-api.weave.works/v1/check/scope-probe?arch=amd64&flag_kernel-version=4.16.3-1.el7.elrepo.x86_64&flag_os=linux&os=linux&signature=wspihh%2BSRBT%2FCh84iYTRQBkiASZ7PjkAtrdYQg8Z1jQ%3D&version=1.10.0: dial tcp 216.58.199.115:443: i/o timeout
<app> WARN: 2018/11/23 04:56:05.501516 Error updating weaveDNS, backing off 40s: Error running weave ps: exit status 1: "Link not found\n". If you are not running Weave Net, you may wish to suppress this warning by launching scope with the `--weave=false` option.
<probe> WARN: 2018/11/23 04:56:15.945743 Error collecting weave status, backing off 40s: Get http://127.0.0.1:6784/report: dial tcp 127.0.0.1:6784: connect: connection refused. If you are not running Weave Net, you may wish to suppress this warning by launching scope with the `--weave=false` option.

[bboreham]

Thanks for the report. I can reproduce.

[bboreham]

By the way Get http://127.0.0.1:4040/api: dial tcp 127.0.0.1:4040: connect: connection refused is not the issue - the probe connects fine half a second later.
This is probably just a race with the app getting started.

[bboreham]

I'm going to re-title this issue, but feel free to file another one about the misleading log message.