Lemmy
https://github.com/LemmyNet
recommends Ansible
I opted for the full version -
- pipx install --include-deps ansible
ew, initial bits painful, found the docs confusing, maybe assume more prior knowledge than I have (only used Docker a bit, have never used Ansible). More worrying, I haven't a clue what it's stuck on my server.
2023-08-30
The Ansible thing did look like it'd mostly run ok, but things definitely fell apart around nginx. Very likely cause being host:port clash, as I already have an Apache server in front on hyperdata.it/127.0.0.1 :80 and :443
https://www.geeksforgeeks.org/changing-nginx-port-in-linux/
I changed the default config yesterday, but just looked again, there's actually :
/etc/nginx/sites-available/default
/etc/nginx/sites-available/hyperdata.it.conf
/etc/nginx/sites-enabled/default
/etc/nginx/sites-enabled/hyperdata.it.conf
So I've deleted the /etc/nginx/sites-enabled/default symlink and changed hyperdata.it.conf to use port 8421
- sudo systemctl restart nginx.service
- failed
- systemctl status nginx.service | less
- nginx: [emerg] bind() to 0.0.0.0:443 failed
I'm pretty sure I don't need https/443 on nginx, I've got Apache doing that, is proxying to Fuseki etc on plain http on different ports. So I've deleted that section from hyperdata.it.conf
- systemctl restart nginx.service
- systemctl status nginx.service
Active: active (running) since Wed 2023-08-30 09:27:02 UTC; 12s ago
Yay!
Hmm. http://hyperdata.it:8421 just redirects to https://hyperdata.it/
On server,
- apt install lynx
- lynx http://127.0.0.1:8421
Currently reorganising the server. I'll put my FOAF/Solid here soon, for now my contact details should be at : https://hyperdata.it/ note to self : this is /opt/lampp/htdocs/profile/index.html
Aha! That's my placeholder for https://danny.ayers.name/, configured in Apache.
Where are my notes on Apache setup..?
~/HKMS/server-setup/ apparently - TODO make that easier to find
distraction danbri mentioned XMPP (for ChatGPT) yesterday, it appears I have ejabberd installed. Is it running? see ejabberd Notes
https://lemmy.hyperdata.it
http://lemmy.hyperdata.it http://lemmy.hyperdata.it:8421 https://lemmy.hyperdata.it:8421 http://hyperdata.it:8421 https://hyperdata.it:8421
lynx http://127.0.0.1:8421
root@localhost:~/temp# wget http://127.0.0.1:8421
--2023-09-01 11:19:35-- http://127.0.0.1:8421/
Connecting to 127.0.0.1:8421... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://127.0.0.1/ [following]
--2023-09-01 11:19:35-- https://127.0.0.1/
Connecting to 127.0.0.1:443... connected.
ERROR: certificate common name ‘danny.ayers.name’ doesn't match requested host name ‘127.0.0.1’.
To connect to 127.0.0.1 insecurely, use `--no-check-certificate'.
The only 301 that looked relevant was in :
nano /etc/nginx/sites-available/hyperdata.it.conf
so I removed that block
systemctl restart nginx.service
https://lemmy.hyperdata.it/ seems to redirect to http://lemmy.hyperdata.it/, nginx starter page.
That redirect was needed!
put it back, random longshot, removed (shouldn't be needed after Apache..?):
location /.well-known/acme-challenge/ {
root /var/www/certbot;
}
in /var/log/nginx/access.log
127.0.0.1 - - [01/Sep/2023:11:31:41 +0000] "GET / HTTP/1.1" 301 162 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36"
It looks like it's getting that far, but the lemmy bit isn't doing anything
https://join-lemmy.org/docs/administration/troubleshooting.html
root@localhost:/home/hmks-apps/lemmy/hyperdata.it# docker-compose logs -f lemmy
...
lemmy_1 | Is the server running on host "postgres" (172.18.0.3) and accepting
lemmy_1 | TCP/IP connections on port 5432?
...
I was in the middle of typing a message to ask for help on r/lemmy, when something occurred to me. Maybe Ansible doesn't do the external services. It's plausible that I'd already installed nginx, Ansible just added a config. But postgres, pictrs (?), the smpt service..?
sudo apt install postgresql
The postgresql service is an "umbrella" service whose purpose is to start or stop the services named postgresql@version-instance which are the actual services that you are interested in. To get the statuses of these, run sudo systemctl status 'postgresql*'
a PostgreSQL Cluster is running...
https://www3.ntu.edu.sg/home/ehchua/programming/sql/PostgreSQL_GetStarted.html
initial client access :
- sudo -u postgres psql
- \l (list DBs)
there is a DB postgres, owner postgres
wait, https://github.com/LemmyNet/lemmy/issues/1847
- root@localhost:/home/hmks-apps/lemmy/hyperdata.it# docker ps
postgres was already running under docker :
- docker-compose exec postgres psql -U lemmy
making sure it's using the same password as in lemmy.hjson
- lemmy=# \password
VkNyXOFMCgb0sGjraJUz
root@localhost:/home/hmks-apps/lemmy/hyperdata.it# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e519719e228e nginx:1-alpine "/docker-entrypoint.…" 2 days ago Up 2 days 80/tcp, 0.0.0.0:20140->8536/tcp, :::20140->8536/tcp hyperdatait_proxy_1
58f4af628105 dessalines/lemmy-ui:0.18.4 "docker-entrypoint.s…" 2 days ago Up 2 days 1234/tcp hyperdatait_lemmy-ui_1
9da7a413d90b dessalines/lemmy:0.18.4 "/app/lemmy" 2 days ago Up 2 days hyperdatait_lemmy_1
3394683cf319 postgres:15-alpine "docker-entrypoint.s…" 2 days ago Up 2 days 5432/tcp hyperdatait_postgres_1
3792edf55801 asonix/pictrs:0.4.0 "/sbin/tini -- /usr/…" 2 days ago Up 2 days 6669/tcp, 8080/tcp hyperdatait_pictrs_1
157491f6495f mwader/postfix-relay "/root/run" 2 days ago Up 2 days 25/tcp
ew, nginx & posgres
docker stop e519719e228e (nginx) docker restart 3394683cf319 docker restart 3792edf55801 docker restart 157491f6495f docker restart 9da7a413d90b docker restart 58f4af628105
no change
systemctl stop nginx docker start e519719e228e
slight change
https://lemmy.hyperdata.it/ -> http://lemmy.hyperdata.it/
503 Service Unavailable
that's a change. Next need to check the logs. But enough for today.