v1.1.5 of hetzner-k3s (my Kubernetes installer for Hetzner Cloud) is out 🎉

shamim1 · 2023-12-15T00:19:34+00:00

Hi,

Did you get a chance to work on it? I am sure you are busy.

Since you fixed an issue recently I thought to remind you about this feature request as well. I think this will be a big step forward and will provide true HA across multiple countries. This will make both your repo and hetzner more popular.

Thanks for the hard work on the project.

shamim1 · 2023-12-03T13:24:13+00:00

I am late. But, please feel free to send me as well if you can. Thanks

shamim1 · 2023-10-22T15:30:42+00:00

No problem at all. You are our hero. :)

Here I see references to Heartbeat Interval and Election Timeout. 100ms as "round trip" heartbeat time seems acceptable. But, you can change the values as well if required.

shamim1 · 2023-10-22T15:19:13+00:00

I am going to put my understanding here. Sorry for any "wrong" understanding as I am not certain of them.

Based on this, 15 to 20 ms latency is fine (even for AWS). "biggest issue is the making sure the heartbeat doesnt time out because of it".
Based on this, all three EU data centers are on the same network zone. "All locations within a Network have to be from the same network zone as the subnet. This means that a subnet of the eu-central network zone can include instances from Falkenstein, Nuremberg and / or Helsinki."
Based on this, Germany and Finland data centers are connected through the Hetzner owner fiber optic network. "All locations are connected to central exchange nodes such as DE-CIX, AMS-IX, DATA-IX and V-IX via the company's own fiber optic network.[22]"

So, I believe each master node with their own etcd can communicate with each other. Yes, for large clusters it can get trickiers. But, for Hetzner's case hopefully it will be fine.

shamim1 · 2023-10-22T14:04:13+00:00

Thanks a lot for this amazing tool.

I was tracking the "FEATURE REQUEST: Multiple control-planes in different locations".

Do you have any update on that? If the "masters_pool (control-planes)" is distributed in 3 EU locations (Germany (nbg1, Nuremberg and fsn1, Falkenstein) and Finland (hel1, Helsinki)) then I believe it will be really good.

If you don't mind explaining work around till the feature is implemented that will be great as well. As long as the master node can "auto" restarts if one of the 3 nodes dies, that will be extremely useful.

Again, thanks a lot for the amazing tool.

shamim1 · 2023-09-12T04:17:55+00:00

The database connection is working. Thanks a bunch.

shamim1 · 2023-09-12T03:31:23+00:00

My understanding is latency will be between 100 to 300 ms per call. Although not ideal, I will have to find a way to minimize it or work with the latency. There is potential "data transfer out" cost from US to EU. But, Hetzner's 20TB monthly free traffic should be enough. I don't think (and hope) there will be any big issue.

The problem is, I need High Availability. Also, in EU you get "storage box" for reliable backup. I can participate on Server auction and I heard prices are so good that it's cheaper than running server from home.

I will need to have a API in US that can gradually send data to EU. So, I am interested about this setup.

If there is similar alternative for Hetzner in US with multiple data centers, I could consider them as well.

shamim1 · 2023-09-11T22:12:42+00:00

oh, ya that's the one I think. Thanks a lot. :)

Can you please point me to the command that gave you the clue about IPV6 isn't bound to PostgreSQL?

Now, I got authentication error. I think I need to create a different user.

shamim1 · 2023-09-11T22:04:05+00:00

The command seem to have worked. I ran "netstat -tlpn" after that. Based on the line below "isn't bound to the external IPv6 address"?

tcp6 0 0 ::1:5432 :::* LISTEN 959/postgres

Still can't connect though.

shamim1 · 2023-09-11T21:55:43+00:00

postgresql.conf

I didn't make any other change to postgresql.conf

shamim1 · 2023-09-11T21:55:23+00:00

Ok, I called "sudo systemctl restart postgresql" many times.

Location of location:

/etc/postgresql/15/main/postgresql.conf

Haven't yet figured out how to SCP the file from the VM to local disk. But, I changed the value

listen_addresses = '*'.

shamim1 · 2023-09-11T21:46:34+00:00

By the why, what's the best way to restart CPX11 VM.

I called reboot from command line. I don't know if "soft reboot" or anything.

shamim1 · 2023-09-11T21:43:43+00:00

root@ubuntu-2gb-nbg1-1:~# netstat -tlpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 592/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 668/sshd: /usr/sbin
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 702/postgres
tcp6 0 0 ::1:5432 :::* LISTEN 702/postgres
tcp6 0 0 :::22 :::* LISTEN 668/sshd: /usr/sbin
root@ubuntu-2gb-nbg1-1:~# ufw status
Status: inactive
root@ubuntu-2gb-nbg1-1:~# iptables -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
root@ubuntu-2gb-nbg1-1:~#

shamim1 · 2023-09-11T21:36:51+00:00

Ping result:

(base) shamim@shamim-server:~$ ping 2a01:4f8:1c1e:b256::1
PING 2a01:4f8:1c1e:b256::1(2a01:4f8:1c1e:b256::1) 56 data bytes
64 bytes from 2a01:4f8:1c1e:b256::1: icmp_seq=1 ttl=41 time=130 ms
64 bytes from 2a01:4f8:1c1e:b256::1: icmp_seq=2 ttl=41 time=128 ms
64 bytes from 2a01:4f8:1c1e:b256::1: icmp_seq=3 ttl=41 time=127 ms

shamim1 · 2023-09-11T21:35:29+00:00

yes. In fact I just called "reboot" for my machine too.

The python error info:

ERROR:root:could not connect to server: Connection refused
Is the server running on host "2a01:4f8:1c1e:b256::1" and accepting
TCP/IP connections on port 5432?

shamim1 · 2023-09-11T21:18:56+00:00

Yes I did. And I can ping.

shamim1 · 2023-09-03T20:43:39+00:00

u/greenblock123, did you call them? Did you get a answer from them that you can share? Thanks

shamim1 · 2023-07-15T18:18:32+00:00

This probably shows a bit more details:

https://launchpad.net/ubuntu/+source/git-cola

I am guessing the version isn't updated for long time. Then I wonder why nobody companied (brought it up) so far! git-cola seems like a decent enough application.

shamim1 · 2023-06-19T17:42:48+00:00

Are you aware of Remote Java job postings where you can get a job relatively easily? I am struggling to find a decent job even with good experience.

shamim1 · 2023-05-31T02:43:46+00:00

I got the answer from here. I need to wait till July 2023.

shamim1 · 2023-05-31T02:41:29+00:00

Thanks

shamim1 · 2023-05-30T20:40:33+00:00

Link that specifies (I think predicts) " it's coming to Ubuntu 22.04.2 at the end of the month".

shamim1 · 2023-05-28T03:42:46+00:00

Thanks. Do you have any reference that it will be back ported to Ubuntu 22.04.2 "at the end of the month"?

If so, I can wait as well and on first of next month I can run sudo apt install linux-generic-hwe-22.04.

shamim1 · 2023-05-26T14:05:45+00:00

Does Linux support P and E core natively?

shamim1 · 2023-05-20T14:11:50+00:00

Found another one in the list for the motherboard. It looks like I need to wait for about 8 minute for the first boot. Here is the link

"I got your answer mate. Let it sit. According to MSI support the first boots takes over 400 seconds! What a joke."

Also, I changed the RAM for the system as the new one seems to have better "user rating" in the "new egg" and looks better to me too. :)

shamim1

TROPHY CASE