I am trying to run this docker container cocalc (GitHub - sagemathinc/cocalc-docker: Docker setup for running CoCalc as downloadable software on your own computer) on my machine at home. I run multiple other web services that are behind my nginx reverse proxy, and they work well. But I can’t get the reverse proxy (which is on the host, not in a docker container) to connect to my Docker container.
Here is my current nginx.conf:
user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;
events {
worker_connections 768;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
types_hash_max_size 2048;
server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# SSL Settings
##
ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
ssl_prefer_server_ciphers on;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
##
# Virtual Host Configs
##
include /etc/nginx/sites-enabled/cocalc;
[other includes redacted]
}
Here is my current sites-available/cocalc config:
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
listen 57528 ssl;
listen [::]:57528 ssl;
server_name cocalc.[].net;
location / {
proxy_pass https://localhost:33333/; # The / is important!
# this enables proxying for websockets, which cocalc uses extensively:
# this enables proxying for websockets, which cocalc uses extensively:
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_set_header Host $host;
}
# You can also leave these two lines out and use certbot
ssl_certificate /etc/letsencrypt/live/[]/fullchain.pem ;
ssl_certificate_key /etc/letsencrypt/live/[]/privkey.pem ;
}
Here is the Nginx error log:
2023/01/23 00:44:54 [error] 98892#98892: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:44:55 [error] 98892#98892: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:44:55 [error] 98892#98892: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:48:46 [info] 99041#99041: Using 131072KiB of shared memory for nchan in /etc/nginx/nginx.conf:65
2023/01/23 00:48:50 [error] 99046#99046: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:48:50 [error] 99046#99046: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:48:51 [error] 99046#99046: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
2023/01/23 00:48:52 [error] 99046#99046: *1 peer closed connection in SSL handshake (104: Connection reset by peer) while SSL handshaking to upstream, client: GNREDACTED HOME IP
Here is the docker run command I use:
docker run --name=cocalc --expose 33333 -d -v ~/cocalc:/projects -p 33333:443 sagemathinc/cocalc
Here is information about my docker installation:
Client:
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc., v0.9.1-beta3)
buildx: Docker Buildx (Docker Inc., v0.9.1-docker)
compose: Docker Compose (Docker Inc., v2.14.1)
scan: Docker Scan (Docker Inc., v0.23.0)
Server:
Containers: 10
Running: 1
Paused: 0
Stopped: 9
Images: 5
Server Version: 20.10.22
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: systemd
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 5b842e528e99d4d4c1686467debf2bd4b88ecd86
runc version: v1.1.4-0-g5fd4c4d
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: default
cgroupns
Kernel Version: 5.15.0-58-generic
Operating System: Ubuntu 22.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 15.51GiB
Name: REDACTED
ID: FLWG:VAJO:S3MK:RZ5M:ELNV:ZH2O:LZMO:TOEH:WHVN:HHMR:Z6L4:3EFW
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
I keep getting a 502 bad gateway error. Here is the result of netstat -tulpn | grep 33333:
sudo netstat -tulpn | grep 33333
tcp 0 0 0.0.0.0:33333 0.0.0.0:* LISTEN 98575/docker-proxy
tcp6 0 0 :::33333 :::* LISTEN 98581/docker-proxy
Please let me know if you have any idea what could be wrong, thanks. Also, docker ps shows that the container is up and running fine.