Sebastian Krarup

Renovar Certificado SSL

Sebastian Krarup — Thu, 05 Mar 2020 19:16:57 +0000

Ir a https://zerossl.com/

Click en Online Tools

Click en Online START

Copiar el contenido de account-key.txt y pegarlo en el recuerda de abajo!

Copiar el contenido de domain-csr.txt y pegarlo en el recuerda de abajo!

Luego hacer click en SIGUIENTE

Descargar el archivo, en este caso para el dominio cockpit.krarup.cl

Copiar el archivo descargado al servidor donde esta cockpit.krarup.cl

scp -P 222 MW8co8mw9zSvDy3P64hGJPL1JpapTt7xrDeXQVpow8Q root@192.168.100.127:/var/www/html/.well-known/acme-challenge/

Descargar el nuevo certificado!

El nuevo certificado viene como archivo de texto llamado domain-crt.txt.

Mover ese archivo al lugar donde estan los certificados SSL en el servidor krarup.cl y cambiar extension .txt a .crt

scp -P 222 domain-crt.txt root@192.168.100.127:/etc/ssl/certs/cockpit.krarup.cl.crt

Reload Nginx!

systemctl reload nginx

Done!

Cortar video con ffmpeg

Sebastian Krarup — Mon, 30 Dec 2019 02:33:32 +0000

Dejar parte del video, desde las 2 horas 8 minutos y 33 segundos hasta 16 minutos y 10 segundos despues.

ffmpeg -ss 02:08:33 -i Bellator.237.Saitama.Super.Arena.Japan.1080p.HDTV.x264-ACES.mkv -t 00:16:10 -bsf:v h264_mp4toannexb -vcodec copy -acodec copy Fedor.avi

Redirect WooCommerce login

Sebastian Krarup — Fri, 18 Oct 2019 18:15:23 +0000

You need to edit ./wp-includes/functions.php

Redirected to SHOP

function iconic_login_redirect( $redirect ) {

return wc_get_page_permalink( ‘shop’ );

}

add_filter( ‘woocommerce_login_redirect’, ‘iconic_login_redirect’, 10, 2 );

How to Make WordPress Page Cache Plugins Fly With Nginx

Sebastian Krarup — Sun, 29 Sep 2019 01:13:43 +0000

You need to use WP Fastest Cache Plugin on WordPress

As it turns out Nginx does in fact perform a similar file_exists check on every single request it handles. Most configurations have the following block.

location / {

try_files $uri $uri/ /index.php?$args;

}

This essentially tells Nginx to serve the requested file if it exists, otherwise, perform an internal redirect to index.php. If we add our cache directory to this block, we can instruct Nginx to serve the cached HTML file directly without ever hitting PHP.

With that in mind, we can update our try_files directive like so:

nano /etc/nginx/sites-enabled/wordpress

try_files «/wp-content/cache/all/${http_host}${request_uri}index.html» $uri $uri/ /index.php?$args;

Save changes and reload Nginx

systemctl reload nginx.service

After reloading Nginx, any cached pages generated by WP Fastest Cache will be served directly from Nginx without ever hitting PHP. Requests which haven’t been cached will continue to be handled by WordPress, which will generate the cache for subsequent requests. I should mention that I’ve disabled the ‘Enable Compression’ option in Simple Cache, because Nginx automatically compresses HTML files before sending them to the browser. This means generating the cache via PHP has slightly less overhead because it’s not having to GZIP the contents of the output buffer.

Now you can test the server speed

ab -n 1000 -c 100 https://www.krarup.cl/

Using Apache Bench for Simple Load Testing

Sebastian Krarup — Sun, 29 Sep 2019 01:07:03 +0000

Install packages

apt-get install apache2-utils

Then you can use the command

ab -n 1000 -c 100 https://www.krarup.cl/

Install Homebrew on OSX

Sebastian Krarup — Wed, 25 Sep 2019 01:22:38 +0000

Paste that in a macOS Terminal prompt.

/usr/bin/ruby -e «$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)»

Then you can install packages

brew install iperf3

Permanently add my SSH private key to Keychain on OSX

Sebastian Krarup — Wed, 25 Sep 2019 01:16:33 +0000

Store the key in the keychain

ssh-add -K ~/.ssh/[your-private-key]

Configure SSH to always use the keychain

nano ~/.ssh/config

Host *

UseKeychain yes

AddKeysToAgent yes

IdentityFile ~/.ssh/id_rsa

Change ~/.ssh/id_rsa to the actual filename of your private key. If you have other private keys in your ~.ssh directory, also add an IdentityFile line for each of them. For example, I have one additional line that reads IdentityFile ~/.ssh/id_ed25519 for a 2nd private key.

SSH on OSX Mojave failing with broken pipe error

Sebastian Krarup — Wed, 25 Sep 2019 01:13:08 +0000

Something like the following

ssh -o IPQoS=throughput root@192.168.1.1

Perform SSH Login Without Password

Sebastian Krarup — Wed, 25 Sep 2019 01:05:40 +0000

Generate a key pair on the local server

ssh-keygen

Output

Generating public/private rsa key pair.

Enter file in which to save the key (/home/user/.ssh/id_rsa):

Created directory ‘/home/user/.ssh’.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/user/.ssh/id_rsa.

Your public key has been saved in /home/user/.ssh/id_rsa.pub.

The key fingerprint is:

8c:2a:ed:82:98:6d:12:0a:3a:ba:b2:1c:c0:25:be:5b

Install your public key on the remote server

ssh-copy-id -i ~/.ssh/id_rsa.pub UserName@RemoteServer

Output

UserName@RemoteServer’s password: ********

Now try logging into the machine, with «ssh ‘username@remoteserver'», and check in:

~/.ssh/authorized_keys

to make sure we haven’t added extra keys that you weren’t expecting.

Add a private key to the authentication agent on the local server

ssh-add

Output

Identity added: /home/user/.ssh/id_rsa (/home/user/.ssh/id_rsa)

Now you can log into the remote server via the SSH protocol without prompting a password.

How to Setup NFS Server

Sebastian Krarup — Mon, 23 Sep 2019 00:52:04 +0000

Install NFS server

apt-get install nfs-kernel-server

Create NFS directories

mkdir /mnt/nfsshare

Edit /etc/exports

nano /etc/exports

(inside the exports file write this)

/mnt/nfsshare *(anonuid=501,insecure,all_squash,ro)

Save the changes

sudo exportfs -ra

Reload NFS Server

systemctl reload nfs-server.service

See the sharing path

showmount -e localhost

Export list for localhost:

/mnt/nfsshare *

Mount NFS on Linux

mount serverIP:/mnt/nfsshare /home/seba/NFS/

Mount NFS on Mac

sudo mount -t nfs -o vers=4 -o tcp -o resvport -w serverIP:/mnt/nfsshare/ /Users/seba/NFS/