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maniat1k's questions

Martin Hope
maniat1k
Asked: 2019-06-10 08:17:11 +0800 CST
  • 0

Eu tenho uma instalação Debian

~$ cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/

onde instalei o PostgreSQL

 PostgreSQL 11.3 (Debian 11.3-1.pgdg90+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, 64-bit

PostgreSQL está rodando, mas posso usar de outra máquina: abri a porta 5432 via firewalld

# firewall-cmd --zone=public --list-ports
8443/tcp 5432/tcp

mas não funciona.

Isso localmente

~$ telnet localhost 5432
Trying ::1...
Connected to localhost.
Escape character is '^]'.

isso é da minha máquina (em outra vlan)

:> telnet 192.168.13.183 5432
Trying 192.168.13.183...
telnet: Unable to connect to remote host: Connection refused

isso é de outra máquina (na mesma vlan que o debian)

telnet 192.168.13.183 5432
Trying 192.168.13.183...
telnet: connect to address 192.168.13.183: Connection refused

Então eu desligo o firewalld (apenas para teste), mas recebo os mesmos resultados. Depois disso tentei fazer o mesmo mas com o iptables:

iptables -A INPUT -p tcp --dport 5432 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -p tcp --sport 5432 -m conntrack --ctstate ESTABLISHED -j ACCEPT

Com os mesmos resultados O que estou perdendo aqui?

apenas verifique isso (obrigado @thomas ):

netstat -tulpan | grep postgres
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN      6386/postgres       
tcp6       0      0 ::1:5432                :::*                    LISTEN      6386/postgres       
udp6       0      0 ::1:44652               ::1:44652               ESTABLISHED 6386/postgres

lsof -n -i:5432
COMMAND   PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
postgres 6386 postgres    3u  IPv6  72390      0t0  TCP [::1]:postgresql (LISTEN)
postgres 6386 postgres    5u  IPv4  72391      0t0  TCP 127.0.0.1:postgresql (LISTEN
debian iptables
Martin Hope
maniat1k
Asked: 2019-03-09 05:32:59 +0800 CST
  • 2

Desculpe comprar está em espanhol:

~# apt install vim
Leyendo lista de paquetes... Hecho
Creando árbol de dependencias       
Leyendo la información de estado... Hecho
El paquete vim no está disponible, pero algún otro paquete hace referencia
a él. Esto puede significar que el paquete falta, está obsoleto o sólo se
encuentra disponible desde alguna otra fuente

E: El paquete «vim» no tiene un candidato para la instalación

Basicamente

The «vim» package does not have a candidate for installation

Eu tenho o Debian 9 instalado e atualizado.

qual fonte eu tenho que adicionar /etc/apt/sources.listpara instalar o Vim?

@stephen-kitt esta é minha política apt (obrigado!)

~# LC_ALL=C apt policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://deb.debian.org/debian stretch-updates/main amd64 Packages
     release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=amd64
     origin deb.debian.org
 500 http://security.debian.org/debian-security stretch/updates/contrib amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=contrib,b=amd64
     origin security.debian.org
 500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=main,b=amd64
     origin security.debian.org
Pinned packages:
debian apt
Martin Hope
maniat1k
Asked: 2018-03-28 12:06:42 +0800 CST
  • 1

Estou tentando saber uma maneira de mostrar apenas o endereço MAC de cada NIC que tenho em qualquer máquina virtual em execução:

Até agora eu tenho isso:

ipcopv2
-----------------------------------------------
Groups:          /Infraestructura
State:           powered off (since 2018-03-16T13:30:56.389000000)
NIC 1:           MAC: 080027D40320, Attachment: Bridged Interface 'eth1.15', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
NIC 2:           MAC: 080027660656, Attachment: Bridged Interface 'eth1', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
NIC 3:           MAC: 0800270D3D9E, Attachment: Bridged Interface 'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
Capture screens:    0
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Eu quero ter isso:

ipcopv2
-----------------------------------------------
Groups:          /Infraestructura
State:           powered off (since 2018-03-16T13:30:56.389000000)
NIC 1:           MAC: 080027D40320, Attachment: Bridged Interface 'eth1.15', Cable connected: on
NIC 2:           MAC: 080027660656, Attachment: Bridged Interface 'eth1', Cable connected: on
NIC 3:           MAC: 0800270D3D9E, Attachment: Bridged Interface 'eth0', Cable connected: on
Capture screens:    0
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Como fazer isso? Quero entender como ler as informações e mostrar apenas essa parte usando o bash.

shell-script virtualbox