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[#] Wed Feb 27 2019 14:28:05 EST from IGnatius T Foobar

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you can get about 90% of the way to this cloud-independence nirvana
with just docker-compose... ECS command-line tools accept
docker-composse files as input...

What about service discovery? Doesn't a container have to announce itself somehow, so other components know where to find the service it provides?

(Yes this is probably a newbie question. I am somewhat container IGnorant.)

[#] Thu Feb 28 2019 11:04:21 EST from Ragnar Danneskjold

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No. You'd use something like Docker-Compose or the Docker network bridge.

[#] Sun Mar 03 2019 21:18:01 EST from IGnatius T Foobar

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Hello from IG using an old Raspberry Pi 2B with the latest Raspbian.

It's slow. But it looks damn good. LXDE actually looks like a DESKTOP.
It behaves like a desktop. Everything is where you expect it to be and behaves the way you expect it to.

Why can't any of the mainstream people build environments like this anymore?

This is actually a bit of an experiment. I'm basically taking VDI for a spin, seeing if I can use it as my daily driver. Since I have 1 Gbps Internet at home now, it might be feasible. I would also be able to keep completely separate desktops for different purposes (such as work and personal ones) which is something I've been wanting to do anyway.

The pi is slowing it down, but if it works in concept, I might go for an Intel NUC or even an old HP thin client off eBay.

[#] Mon Mar 04 2019 10:51:55 EST from Ragnar Danneskjold

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I just bought a couple of HP thin clients. If you need any add-ons, it's not great. But as a generic RDP client, it's fine. I'm using it with Citrix too.....

You may want to check out the Intel Compute Stick.... They're pretty cool.

[#] Mon Mar 04 2019 13:24:58 EST from IGnatius T Foobar

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New HP thin clients or older ones? Most of the ones built in the past decade seem to be just small computers. People are reloading them with Linux or Windows and using them for low end computing tasks -- home servers, media servers, NAS boxes, etc.

My needs are more traditional; I really do want to use it as a thin client even if I don't use the factory-supplied software. What I'm seeing so far is that running the desktop remotely has very little performance penalty over a multi-megabit network, but the Pi can't update the screen fast enough. Even my six year old tablet does it better.

This wouldn't be the first time either. I ran ThinStation at home for a long time and loved it.

[#] Tue Mar 05 2019 11:20:36 EST from Ragnar Danneskjold

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Brand spanking new.....

[#] Wed Mar 06 2019 22:01:39 EST from IGnatius T Foobar

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Hehe ... I figured out another way to do the experiment.  It turns out my laptop is capable of booting from an SD card.  So I installed the latest Ubuntu onto it and am dual booting.  Both operating systems are on encrypted partitions with different keys, guaranteeing no cross-contamination.   So far I'm liking this a lot.

ProTip: when using Linux on an SD card, set the "noatime" mount option to minimize unnecessary writes.


[#] Thu Mar 07 2019 09:55:48 EST from LoanShark

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2019-02-27 14:28 from IGnatius T Foobar
you can get about 90% of the way to this cloud-independence nirvana

with just docker-compose... ECS command-line tools accept
docker-composse files as input...

What about service discovery? Doesn't a container have to announce
itself somehow, so other components know where to find the service it


On Amazon ECS, there are generally two different ways we handle this, depending on the use case:

(1) Set up an ALB - Application Load Balancer. The client discovers the service by looking up an A record for the ALB. As docker containers come and go during scale-in/scale-out events, ECS transparently handles registering their host+port with the ALB. In cases where said docker containers are co-located on the same physical Linux kernel, it's possible to set it up such that the port is a dynamically allocated ephemeral port.

I don't know, off the top of my head, whether the ECS command-line tool which ingests docker-compose files, supports this style of setup in a standardized way, so this is a case where, maybe, Kubernetes might provide better cloud-vendor independence in theory. (But I don't think this really matters, as K8s has its own set of problems. Y'all should also be thinking about stack-independence and building apps that can be deployed to either ECS or K8s or similar.)

(2) Sometimes you don't want to use a load balancer because services want to have direct knowledge of how many peer instances are out there, and the addresses of those peers. In such a case, ECS can be configured to do service discovery via DNS SRV records, which resolve to a a list of A record + port number combinations. This is something that ECS also supports natively and it's exposed in the command-line tool which ingests docker-compose files. So there's some degree of standardization here (though the tool is not fully conformant with the latest version of docker-compose syntax, it supports a meaningful subset.)

[#] Thu Mar 14 2019 00:19:59 EDT from IGnatius T Foobar

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That's great, but I build clouds, I don't consume them. I'm more interested in the generic technology.

The ALB idea sounds like the right approach, though. I need to get more container savvy.

[#] Mon Apr 22 2019 14:45:14 EDT from IGnatius T Foobar

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I have a Linux computer on my desk again. As a very patriotic frog once said: "Feels good, man."

The mainstream desktops are a bit too bloated for my taste, so I switched to LXDE (which is using OpenBox as its window manager). All of the chrome is 2-D but not "flat", which I think is perfect. And it's built to work like a desktop, not like a tablet or phone.

It found and configured all of my hardware without my help, right down to being able to tell me how much battery life is left in my cordless mouse.
Bluetooth just works, the screen just works, sound just works, and it even found and configured my network printer by itself. That last one isn't possible on Windows, which needs strong admonition to be convinced that my HP LaserJet 5 is not actually an HP ExpensiveInk 9999.

It's been too long. I'm enjoying this.

[#] Fri May 10 2019 09:53:20 EDT from linuxlover08

Subject: How to Rename a File in Linux

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Do you not like the name of any file or directory? Do you want to change it? Do you want to give new name to file or directory?

If you don’t know how to rename a file in Linux then this article is helpful for you.

When you read complete article, You will learn about move and rename files.

You must read warnings mentioned in the article. Cautions make you perfect, and save you from disaster happen by using wrong command.


[#] Tue May 14 2019 13:30:40 EDT from fleeb

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[#] Sat May 18 2019 16:44:57 EDT from IGnatius T Foobar

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Yeah that's about it. Looks like this person is just plugging a web site, but with content like "how to rename a file" I'm not sure who exactly is going to go there. :)

[#] Wed Jul 24 2019 13:22:26 EDT from fleeb

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Debian should consider modifying their install to ask everything it needs of the user up front, then kick off the install of the OS with the stored information.

This business of having to nurse a Debian install is rather annoying.

[#] Sat Jul 27 2019 12:42:44 EDT from IGnatius T Foobar

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You can do a pre-seeded installation:

[ ]

It's intended for unattended installations though, so you might find it's more trouble than it's worth.

[#] Mon Jul 29 2019 13:43:07 EDT from fleeb

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Yeah, I'm more interested in answering the questions I need to ask, then walking away while it finishes building.

[#] Fri Aug 02 2019 10:24:09 EDT from IGnatius T Foobar

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Right. You'd think that if they can handle a pre-seeded installation, they could build a UI that creates the instructions to drive it.

Or at least do that for the most basic installations. Mine tend to be really complicated because I am an insane nerd. For example, when installing Linux on top of KVM or VMware, I put the boot volume on its own 1GB virtual disk, and the swap space on its own virtual disk, then the main virtual disk for LVM. Why bother with partitions when the hypervisor gives you that kind of granularity? But try finding an easy way to tell the installer to do that for you. It involves A LOT of steps, even though the end result is much simpler.

[#] Mon Aug 05 2019 13:26:54 EDT from IGnatius T Foobar

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And I'm seeing a similar problem right now. I've got a machine that I'm upgrading from Stretch to Buster:

apt-get -y update && apt-get -y upgrade

The full upgrade takes a long time. It's the kind of operation you want to walk away from until it's finished. But you can't, because dpkg jumps in every now and then to ask a question about how you want so-and-so package reconfigured.

But at least you only have to reboot once.

[#] Tue Aug 06 2019 11:18:04 EDT from fleeb

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Ugh... yeah, the upgrade process would be that way, I suppose, because each package can individually request some kind of information to assist it in knowing how to reconfigure your machine from what it was, to what it will be, where such a need exists.

OTOH, if you know all the questions that'll get asked, and you know how to answer them (as in, the names of all the various variables, etc), you can tell Debian all the answers in advance of running the upgrade, I think, and it'll Just Do It.

But... Debian doesn't provide a very good way to collect all these Q&As in advance of running the upgrade. Perhaps that's something they could work on. Heh.

[#] Fri Aug 09 2019 08:51:26 EDT from IGnatius T Foobar

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Upgrades can call dpkg-reconfigure to ask questions, and they frequently do.
I'm not sure if it's feasible to do all of those ahead of time, but it might be possible to save them all for the end, and run all of the dpkg-reconfigure operations at once.

The biggest one is the "so-and-so wants to upgrade /etc/somefile but the local version has changed" and you have to tell it whether to replace the file or keep your own. On the Red Hat family of distributions, it simply saves the file next to your existing one with an ".rpmnew" suffix. I think that's fine for most circumstances. Red Hat seems to understand that people want to do unattended upgrades.

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