Editing Troubleshooting (section)

= Services & Logs =

<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
-->&#32;# systemctl restart <serviciu>
&#32;# systemctl start <serviciu>
&#32;# systemctl stop <serviciu>
</code>

== Journal ==
<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
-->&#32;# journalctl -xb <- logurile de la ultimul boot
&#32;# journalctl --since "2026-12-01 10:00" <- loguri incepand cu "2026-12-01 10:00"
&#32;# journalctl -u <serviciu> -f <- loguri specifice unui serviciu
&#32;# journalctl -xe <- erori recente din journal
</code>

== Kernel ==
<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
-->&#32;# dmesg -T
&#32;# dmesg --level=err <- filtrare dupa erori
</code>

== Network ==
<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
-->&#32;# netstat -tulnp
&#32;# ss -tulnp <- afiseaza porturile si socket cu LISTEN activ
&#32;# ping -c 3 google.com <- ping catre IP/Domeniu
&#32;# traceroute google.co <- traseul pachetelor catre IP/Domeniu
&#32;# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)
&#32;# tcpdump -i ens18 <- captura de pachete pe din interfata ens18
&#32;# mtr google.com <- combina ping si traceroute in timp real
&#32;# ip route show <- afisaza tabela de routere (util in cazul vm cu mai multe ip sau NIC)
&#32;# ip neighbor show <- afisaza tablea ARP
&#32;# resolvectl status | grep "DNS Servers" <- verificare rapida a DNS activ
</code>

== Procese ==
<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
-->&#32;# ps aux
&#32;# ps aux | grep <serviciu>
&#32;# ps axo stat,ppid,pid,comm | grep -w defunct <- identifica procese zombie
&#32;# ps -eo pid,ppid,state,cmd | grep " D " <- afiseaza procese aflate in "Uninterruptible Sleep"
</code>