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You just have to find the channel_id buried in the page source
I use this Firefox addon for that: https://addons.mozilla.org/en-US/firefox/addon/youtube-rss-finder/ - really useful
I wrote this ansible role to setup dovecot IMAP server. Once a year I move all mail from the previous year from various mailboxes to my dovecot server (using thunderbird).
- How should I do backups? - Lemmy.World
- What backup service do you use? - Lemmy.world
- What are your backup solutions? - Lemmy.world
- How do you guys back up your server? - Lemmy.world
- How do you backup things to your server? - Lemmy.world
- How to store backups? - Lemmy.world
- How do you backup your data? - Lemmy.world
- Need help with a backup solution - Lemmy.World
I do this with https://www.sphinx-doc.org/ + a basic Makefile and config file to make it a bit nicer. I will publish my template a bit later and report back.
I wrote this ansible role to setup dovecot IMAP server. Once a year I move all mail from the previous year from various mailboxes to my dovecot server (using thunderbird).
I use the Netdata agent (with cloud features disabled). Easy installation, FOSS, 0 configuration required, tons of metrics.
I wrote my own ansible role to deploy/maintain a matrix server and a few goodies (element/synapse-admin). If you’re not using ansible you should still be able to understand the deployment logic by starting at tasks/main.yml and following includes/tasks from there.
host maps
It does require a beefy server (rendering tiles is CPU/RAM-intensive, storing pre-rendered tiles is expensive on storage) It should be doable on limited hardware if only a small area.
I think the better move would be keeping/distributing a local copy of the OsmAnd android APK and a few maps for the app. Because you’ll not be able to provide map access to people from your server if the Internet/local fiber/phone network is down - this way everyone can have their own full copy of the map.
I’m not sure about the method to extract map data from the app storage directory though.
Just download a copy of a recent wikipedia dump. You can open it in the Kiwix desktop application (work fine even on an old laptop), the android app (though I’ve never tried opening a full 100GB dump with a phone, not sure if it would work well), or install the kiwix-tool package and serve the .zim file with kiwix-serve (https://wiki.kiwix.org/wiki/Kiwix-serve). You’d also probably want a reverse proxy/usual basic web server/security setup around that.
Second this, always have a device preloaded with Kiwix and one of the wikipedia dumps. A new vesrion is uploaded every few (~6 months). The full English wikipedia dump with images (low-res versions only though) is only 103GB.
libvirt/virt-manager is a nice VM management tool.
Their cheap 1-6€/month VPS offers are actually fine. Not much to say about it, it just works.
https://awesome-selfhosted.net/ is hosted on a Ionos VPS.
allows my mail clients to connect via IMAP to view and search emails
dovecot will be able to handle this part. This is what I use as a mail archive (once a year, archive all mail from the previous year from various mailboxes to my self-hosted dovecot instance). I wrote this ansible role for it.
downloads new emails via IMAP
As others recommended, imapsync should be able to handle that part.
docker solution
These tools are simple enough to install and manage (one package, one config file), Docker is not needed. If you really need it to fit into your docker-based setup, build and maintain your own images.
What’s your existing setup? For such a simple task, check if any of the tools you use currently can be adapted (simple text files on a web server? File sharing like Nextcloud and text files? Pastebin-like? Wiki? …). Otherwise a simple Shaarli instance could do the trick (just post “notes” aka. bookmarks without an URL). I use this theme to make it nicer. Or maybe a static site generator/blog.
I would never recommend Odoo anymore, given how painful it is to upgrade from a major version to another. Their answer to it is basically “yeah, some complex migrations need to be done, just send us a copy of your database with highly sensitive company data, pay us to do the migration and we’ll send it back to you”. Yeah, lol, no.
example preseed file which I use to provision new servers (VMs)
Windows Servers
No
setup automatic responses to the alerts
It should be possible using script to execute on alarm = /your/custom/remediation-script https://learn.netdata.cloud/docs/alerts-&-notifications/notifications/agent-dispatched-notifications/agent-notifications-reference. I have not experimented with this yet, but soon will (implementing a custom notification channel for specific alarms)
restarting a service if it isn’t answering requests
I’d rather find the root cause of the downtime/malfunction instead of blindly restarting the service, just my 2 cents.
I use netdata (the FOSS agent only, not the cloud offering) on all my servers (physical, VMs…) and stream all metrics to a parent netdata instance. It works extremely well for me.
Other solutions are too cumbersome and heavy on maintenance for me. You can query netdata from prometheus/grafana [1] if you really need custom dashboards.
I guess you wouldn’t be able to install it on the router/switch but there is a SNMP collector which should be able to query bandwidth info from the network appliances.
I agree that desktop/ATX tower PCs are the most useful form factor, you can stuff all your old junk hardware in there and offer it a second life without much investment.
However with current electricity prices buying more power efficient hardware can be a better medium-term investment. 1kWh bills at 0.2516€ currently where I’m at (~EU average price), assuming an average power consumption of 50W this gives you (50×24×365)/1000×0.2516=110€/year. At this rate a 200€ investment in hardware would pay for itself in 2-3 years.
Buying a <100€ setup is not worth it for general purpose servers in my opinion, it will either be underpowered or power hungry.
My current solution is to to run all my services in KVM (libvirt) VMs on my beefy desktop computer which is already on most of the time anyway. Best of both worlds.
If I had to redo everything I would probably buy a NUC/mini-PC with a good CPU, 64GB RAM and low power consumption, stash a single huge SSD in there, migrate my VMs there and call it a day. But this is not a cheap setup.
Netdata can also expose metrics to prometheus which you can then use in Grafana for more advanced/customizable dashboards https://learn.netdata.cloud/docs/exporting-metrics/prometheus
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https://github.com/chriswayg/ansible-msmtp-mailer/issues/14 While msmtp has features to alter the envelope sender and recipient, it doesn’t alter the “To:” or “From:” message itself. When the Envelope doesn’t match these details, it can be considered spam
Oh I didn’t know that, good to know!
The proposed one-line wrapper looks like a nice solution
You can definitely replace senders with correct mail addresses for relaying through SMTP servers that expect them (this is what I do):
# /etc/msmtprc
account default
...
host smtp.gmail.com
auto_from on
auth on
user myaddress
password hunter2
# Replace local recipients with addresses in the aliases file
aliases /etc/aliases
# /etc/aliases
mailer-daemon: postmaster
postmaster: root
nobody: root
hostmaster: root
usenet: root
news: root
webmaster: root
www: root
ftp: root
abuse: root
noc: root
security: root
root: default
www-data: root
default: myaddress@gmail.com
(the only thing I changed from the defaults in the aliases file is adding the last line)
This makes it so all/most system accounts susceptible to send mail are aliased to root, and root in turn is aliased to my email address (which is the one configured in host/user/password in msmtprc)
Edit: I think it’s actually the auto_from option which interests you. Check the msmtp manpage
Usually you would have a second DNS resolver configured in /etc/resolv.conf (or whatever name resolution config system you are using, resolvconf, systemd-networkd, etc). The system will fall back to this resolver if the first resolver fails to respond (and/or replies NXDOMAIN, I’m not sure. The exact order and fallback conditions may vary depending on which system you use). This can be another dnsmasq instance, a public DNS resolver, your ISP’s resolver, etc. This allows at least basic DNS resolution to work before your dnsmasq instance comes back up.
I would also add automatic monitoring for dnsmasq (either check that the service/container is running, or check the TCP connection to port 53, or check that DNS resolution is working for a known domain, etc)
Not an answer but still relevant: I actively avoid enabling unattended-upgrades for third-party repositories like Docker (or anything that is not an official Debian repository) because they don’t have the same stability guarantees, and rely on other upgrade notification methods instead.
how bad of an idea is this to run a DNS in docker and use it for the host and other containers?
Personally I would simply install dnsmasq directly on the host because it is one apt install and a configuration file away. Keep it simple.
How does this compare to https://awesome-selfhosted.net/ ?
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- element.io
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- scotthelme.co.uk
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https://www.sphinx-doc.org/ + https://pradyunsg.me/furo/ theme + https://myst-parser.readthedocs.io/ markdown parser + https://sphinx-design.readthedocs.io/ extensions.
Just drop all your markdown files in a directory and run
sphinx-build. Highly customizable but also works out of the box