Andrey
Semionov
LT
EN
RU
SECURE
Andrey Semionov
linux@administrator
NGINX
Linux
Nftables
Fail2Ban
AWS
Cloudflare
MySQL/MariaDB
Python
PHP
Claude API
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Death Arena
Sysadmin Courses
NetAudit
uname -r
6.17.0-35-generic
active
01
nft list ruleset
table inet filter { chain input { type filter hook input } }
active
02
claude api --deploy
Deployment successful ✓ Endpoint: /v1/chat
active
03
systemctl list-timers
NEXT UNIT 02:14 backup.timer
active
04
aws ec2 describe-instances
{ "State": "running", "Type": "t3.medium" }
active
05
tail -f error.log
[OK] Fixed: 502 Bad Gateway [OK] nginx reloaded
active
06
nginx -t && systemctl reload
syntax is ok test is successful
active
07
wp core update && composer install
[OK] WordPress core updated [OK] Dependencies installed
active
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SYSADMIN.COURSES
[email protected]
@AndreySemionov