Troubleshooting - Revision history

Wikiadmin: /* Status */

2026-10-20T16:14:48Z

Status

← Older revision		Revision as of 18:14, 20 October 2026
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	--> # vmstat 1		--> # vmstat 1
	# uptime		# uptime
			# timedatectl status
	</code>		</code>

Wikiadmin: /* Network */

2026-10-20T16:13:55Z

Network

← Older revision		Revision as of 18:13, 20 October 2026
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	# tcpdump -i ens18 <- captura de pachete pe din interfata ens18		# tcpdump -i ens18 <- captura de pachete pe din interfata ens18
	# mtr google.com <- combina ping si traceroute in timp real		# mtr google.com <- combina ping si traceroute in timp real
			# ip route show <- afisaza tabela de routere (util in cazul vm cu mai multe ip sau NIC)
			# ip neighbor show <- afisaza tablea ARP
			# resolvectl status \| grep "DNS Servers" <- verificare rapida a DNS activ
	</code>		</code>

Wikiadmin: /* Network */

2026-10-20T15:57:13Z

Network

← Older revision		Revision as of 17:57, 20 October 2026
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	# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)		# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)
	# tcpdump -i ens18 <- captura de pachete pe din interfata ens18		# tcpdump -i ens18 <- captura de pachete pe din interfata ens18
			# mtr google.com <- combina ping si traceroute in timp real
	</code>		</code>

Wikiadmin: /* Network */

2026-10-20T15:49:47Z

Network

← Older revision		Revision as of 17:49, 20 October 2026
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	# ss -tulnp <- afiseaza porturile si socket cu LISTEN activ		# ss -tulnp <- afiseaza porturile si socket cu LISTEN activ
	# ping -c 3 google.com <- ping catre IP/Domeniu		# ping -c 3 google.com <- ping catre IP/Domeniu
	# traceroute google.co traseul pachetelor catre IP/Domeniu		# traceroute google.co <- traseul pachetelor catre IP/Domeniu
	# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)		# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)
	# tcpdump -i ens18 <- captura de pachete pe din interfata ens18		# tcpdump -i ens18 <- captura de pachete pe din interfata ens18

Wikiadmin: /* Journal */

2026-10-20T15:49:31Z

Journal

← Older revision		Revision as of 17:49, 20 October 2026
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	# journalctl -u <serviciu> -f <- loguri specifice unui serviciu		# journalctl -u <serviciu> -f <- loguri specifice unui serviciu
	# journalctl -xe <- erori recente din journal		# journalctl -xe <- erori recente din journal
			</code>

	== Kernel ==		== Kernel ==

Wikiadmin: /* Services & Logs */

2026-10-20T15:49:17Z

Services & Logs

← Older revision		Revision as of 17:49, 20 October 2026
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	= Services & Logs =		= Services & Logs =

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

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

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

	== Network ==		== Network ==
	# netstat -tulnp		<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
	# ss -tulnp <- afiseaza porturile si socket cu LISTEN activ		--> # netstat -tulnp
	# ping -c 3 google.com <- ping catre IP/Domeniu		# ss -tulnp <- afiseaza porturile si socket cu LISTEN activ
	# traceroute google.co traseul pachetelor catre IP/Domeniu		# ping -c 3 google.com <- ping catre IP/Domeniu
	# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)		# traceroute google.co traseul pachetelor catre IP/Domeniu
	# tcpdump -i ens18 <- captura de pachete pe din interfata ens18		# lsof -i :443 <- afiseaza porturile si conexiunile (exemplu pt 443)
			# tcpdump -i ens18 <- captura de pachete pe din interfata ens18
			</code>

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

Wikiadmin: /* Status */

2026-10-20T15:46:27Z

Status

← Older revision		Revision as of 17:46, 20 October 2026
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	== Status ==		== Status ==
	# vmstat 1		<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
	# uptime		--> # vmstat 1
			# uptime
			</code>

	= Services & Logs =		= Services & Logs =

Wikiadmin: /* Disk */

2026-10-20T15:45:55Z

Disk

← Older revision		Revision as of 17:45, 20 October 2026
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	--> # df -h		--> # df -h
	# df -hi <- arata si inode		# df -hi <- arata si inode
	# du -hx --max-depth=1 /etc/ \| sort -h <- afiseaza toate ~~directoarele~~ si fisierele din /etc/ sortate in ordinea crescatoare a dimensiunii		# du -hx --max-depth=1 /etc/ \| sort -h <- afiseaza toate dir si fisierele din /etc/ sortate in ordinea crescatoare a dimensiunii
	# du -ah / \| sort -rh \| head -10 <- arata cele mai mari 10 fisiere sau directoare		# du -ah / \| sort -rh \| head -10 <- arata cele mai mari 10 fisiere sau directoare
	# watch -d -n 60 'df -H /dev/sd[a-z][0-9] \| sort -r -k 5 -i' <- watch pe "df -h" pentru toate disk-urile montate		# watch -d -n 60 'df -H /dev/sd[a-z][0-9] \| sort -r -k 5 -i' <- watch pe "df -h" pentru toate disk-urile montate

Wikiadmin: /* Disk */

2026-10-20T15:44:40Z

Disk

← Older revision		Revision as of 17:44, 20 October 2026
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	== Disk ==		== Disk ==
	# df -h		<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
	# df -hi <- arata si inode		--> # df -h
	# du -hx --max-depth=1 /etc/ \| sort -h <- afiseaza toate directoarele si fisierele din /etc/ sortate in ordinea crescatoare a dimensiunii		# df -hi <- arata si inode
	# du -ah / \| sort -rh \| head -10 <- arata cele mai mari 10 fisiere sau directoare		# du -hx --max-depth=1 /etc/ \| sort -h <- afiseaza toate directoarele si fisierele din /etc/ sortate in ordinea crescatoare a dimensiunii
	# watch -d -n 60 'df -H /dev/sd[a-z][0-9] \| sort -r -k 5 -i' <- watch pe "df -h" pentru toate disk-urile montate		# du -ah / \| sort -rh \| head -10 <- arata cele mai mari 10 fisiere sau directoare
	# lsblk -f		# watch -d -n 60 'df -H /dev/sd[a-z][0-9] \| sort -r -k 5 -i' <- watch pe "df -h" pentru toate disk-urile montate
	# fdisk -l		# lsblk -f
			# fdisk -l
			</code>

	== Status ==		== Status ==

Wikiadmin: /* RAM */

2026-10-20T15:43:48Z

RAM

← Older revision		Revision as of 17:43, 20 October 2026
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	== RAM ==		== RAM ==
	<code class="mw-code mw-highlight plainlinks" style="display:block"><!--		<code class="mw-code mw-highlight plainlinks" style="display:block"><!--
	--># free -h		--> # free -h
	# awk '$3=="kB"{$2=$2/1024;$3="MB"} 1' /proc/meminfo \| column -t <- conversie in MB		# awk '$3=="kB"{$2=$2/1024;$3="MB"} 1' /proc/meminfo \| column -t <- conversie in MB
	# awk '$3=="kB"{$2=$2/1024**2;$3="GB";} 1' /proc/meminfo \| column -t <- conversie in GB		# awk '$3=="kB"{$2=$2/1024**2;$3="GB";} 1' /proc/meminfo \| column -t <- conversie in GB
	# ps aux --sort=-%mem \| head -n 10 <- cei mai mari 10 consumatori de RAM		# ps aux --sort=-%mem \| head -n 10 <- cei mai mari 10 consumatori de RAM
	</code>		</code>