I am not sure if I selected a right configuration, probably “No configuration” is better:
Configuring the access to GitHub with SSH
ssh-keygen -t ed25519 -C "winappdev@gmail.com"
# /home/dmitriano/.ssh/id_rsa_github
# and empty passphrase
nano .ssh/config
Host github.com
HostName github.com
IdentityFile ~/.ssh/id_rsa_github
stat -c %a ~/.ssh/config
chmod 600 ~/.ssh/config
“ping: socket: Operation not permitted” error on a clean Ubuntu 24.04 installation
ping did not work on my clean Ubuntu 24.04 installation showing the following error:
ping developernote.com
ping: socktype: SOCK_RAW
ping: socket: Operation not permitted
ping: => missing cap_net_raw+p capability or setuid?
Migrating a WordPress website from PHP 7.4 to PHP 8.3.6
After updated my WordPress to 6.7.1 and added the following to wp-config.php
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
and got the following error message:
Fatal error: Uncaught Error: Call to undefined function wp_kses() in /home/devnote/www/wp-includes/functions.php:6098 Stack trace:
#0 /home/devnote/www/wp-includes/functions.php(5579): wp_trigger_error()
#1 /home/devnote/www/wp-includes/class-wpdb.php(1333): _deprecated_function()
#2 /home/devnote/www/wp-content/sunrise.php(11): wpdb->escape()
#3 /home/devnote/www/wp-includes/ms-settings.php(47): include_once('...')
#4 /home/devnote/www/wp-settings.php(156): require('...')
#5 /home/devnote/www/wp-config.php(107): require_once('...')
#6 /home/devnote/www/wp-load.php(50): require_once('...')
#7 /home/devnote/www/wp-blog-header.php(13): require_once('...')
#8 /home/devnote/www/index.php(17): require('...')
#9 {main} thrown in /home/devnote/www/wp-includes/functions.php on line 6098
Creating Docker network for hosting legacy PHP websites
Running test Docker containers
sudo docker network create --subnet=172.20.0.0/16 legacy_net
sudo docker network ls
NETWORK ID NAME DRIVER SCOPE
61aa4a19ec0c bridge bridge local
7c0ebcfd4e3a dockovpn_default bridge local
79ed9c355254 host host local
99d8bde8e488 legacy_net bridge local
086455f026a8 none null local
How to update a WordPress website securely
To prevent a website from changing its source code set user = nobody in its pool config, that can be /etc/php/8.3/fpm/pool.d/slogpost.conf for example:
[slogpost]
user = nobody
group = slogpost
listen = /run/php/www-slogpost.sock
include=/etc/php/8.3/fpm/socket-owner.conf
pm = ondemand
pm.max_children = 10
pm.start_servers = 0
pm.min_spare_servers = 0
pm.max_spare_servers = 1
pm.max_requests = 500
slowlog = /var/log/php-my/$pool.slow.log
request_slowlog_timeout = 5s
request_terminate_timeout = 300s
chdir = /
Migrating my VPS from Ubuntu 16.04 to Ubuntu 24.04
Migrating the users and groups
Copied my groups from /etc/group:
dmitriano:x:1000:
slogpost:x:1001:www-data,bak
beauty:x:1009:www-data,bak
test1:x:1012:www-data,beauty,dmitriano,devnote,bak
test2:x:1013:www-data,bak
devnote:x:1018:www-data,bak
exchange:x:1025:
git:x:1026:www-data,bak
game:x:1027:www-data,bak
shar:x:1029:www-data,bak
bak:x:1032:
Using tcpdump with OpenVPN
VPN service opens tun0 device in the docker container:
sudo docker exec -it 966f926484bc sh
/opt/Dockovpn # ifconfig
eth0 Link encap:Ethernet HWaddr 02:42:AC:11:00:03
inet addr:172.17.0.3 Bcast:172.17.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:20553 errors:0 dropped:0 overruns:0 frame:0
TX packets:20539 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:14609434 (13.9 MiB) TX bytes:14757264 (14.0 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:7825 errors:0 dropped:0 overruns:0 frame:0
TX packets:12572 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:1673378 (1.5 MiB) TX bytes:12115333 (11.5 MiB)
