Connection issues inside vps

seenu · June 2021

In a vps, when i log in...it says

Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet connection or proxy settings

and when i do git pull it fails with message fatal: unable to access 'https://github.com/brand/repo/': gnutls_handshake() failed: Error in the pull function.

what could be the solution? many answers say updating git, libssls etc but none worked.

hoping to find a solution here.

thanks.

lgsin · June 2021

ofc updating won't work since the message writes:
Check your Internet connection or proxy settings

Did you check your internet connection?

Falzo · June 2021

do you need to use any kind of vpn/proxy from that vps to get to the outside world?

port 443 blocked?
does ping work?

SWN_Michael · June 2021

Check your DNS settings on the VPS, are you able to ping google.com or similar?

seenu · June 2021

@Falzo said:
do you need to use any kind of vpn/proxy from that vps to get to the outside world?

port 443 blocked?
does ping work?

For example, ping github.com works very fine

i didn't install ufw and it worked fine till today but may be server people enforced it,
running sudo netstat -tulpn | grep :443 shows some are running on openlitespeed

and i tried disabling ufw, no result

added https with sudo ufw allow https still no result.

what else could be the problem?

Also is there any way to test whether https working or not from terminal? is there any command like ping for testing https?

alwyzon · June 2021

@seenu said:
Also is there any way to test whether https working or not from terminal? is there any command like ping for testing https?

Checkout wget or curl.

— Michael

seenu · June 2021

curl github.com finishes in a blink

curl https://github.com takes forever and throws error

curl: (35) OpenSSL SSL_connect: Connection reset by peer in connection to github.com:443

seenu · June 2021

not sure....what to do 🤷

mikho · June 2021

Check date and time of VPS

if its a date/time mismatch, the certificate gets rejected.

lgsin · June 2021

curl http://github.com is fine but https isn't.. Are you running a super ancient distro such that ca-certificate is obsolete?

tetech · June 2021

Try reducing MTU. HTTPS packets are larger than HTTP and improper MTU could be doing it.

ifconfig eth0 mtu 1200 up

or similar. The 1200 bytes is just for testing, probably won't need to go that low in reality.

thetimbo · June 2021

If your MTU is too high could cause issues retrieving from HTTPS sites because the packets are too big.

Edit: oops what tetech said, didn't see his post.

seenu · June 2021

@mikho said: if its a date/time mismatch, the certificate gets rejected.

Can you please tell me how? https://askubuntu.com/a/998449 tried this but no luck

@lgsin said: curl http://github.com is fine but https isn't.. Are you running a super ancient distro such that ca-certificate is obsolete?

Ubuntu 20

@tetech said:
Try reducing MTU. HTTPS packets are larger than HTTP and improper MTU could be doing it.
ifconfig eth0 mtu 1200 up
or similar. The 1200 bytes is just for testing, probably won't need to go that low in reality.

HOLY SHIT!!!.... that did the job.

now vps is blazing fast in git pull etc.

seenu · June 2021

Thanks to everyone for posting your replies, i am able to solve it without contacting host

it was working fine till yesterday so not sure what caused it but i am able to solve it easily thanks to you guys especially @tetech

Connection issues inside vps

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