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настройка_сети_в_linux
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настройка_сети_в_linux [2022/05/26 10:27] val [Файлы конфигурации Ubuntu >= 18] |
настройка_сети_в_linux [2024/06/13 11:57] val [Команды для диагностики] |
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|---|---|---|---|
| Line 78: | Line 78: | ||
| # ss -anptu | # ss -anptu | ||
| + | # ss -lnp | grep ':80' | ||
| + | |||
| + | # количество подключений с каждого адреса (https://serverfault.com/questions/421310/check-the-number-of-active-connections-on-port-80) | ||
| + | # ss -tn src :80 or src :443 | tr -s ' ' | cut -d ' ' -f5 | cut -d ':' -f1 | sort | uniq -c | sort -n | ||
| </code> | </code> | ||
| Line 90: | Line 94: | ||
| <code> | <code> | ||
| + | # hostnamectl set-hostname server.corpX.un | ||
| + | |||
| + | # cat /etc/hostname | ||
| + | </code><code> | ||
| + | server.corpX.un | ||
| + | </code> | ||
| + | |||
| # cat /etc/hosts | # cat /etc/hosts | ||
| </code><code> | </code><code> | ||
| Line 111: | Line 122: | ||
| === Статическая настройка параметров === | === Статическая настройка параметров === | ||
| <code> | <code> | ||
| - | # cat /etc/hostname | ||
| - | </code><code> | ||
| - | server.corpX.un | ||
| - | </code><code> | ||
| # cat /etc/network/interfaces | # cat /etc/network/interfaces | ||
| </code><code> | </code><code> | ||
| Line 178: | Line 185: | ||
| <code> | <code> | ||
| + | client1# dhclient eth0 | ||
| + | |||
| client1# cat /etc/hostname | client1# cat /etc/hostname | ||
| </code><code> | </code><code> | ||
| Line 183: | Line 192: | ||
| </code><code> | </code><code> | ||
| client1# :> /etc/resolv.conf | client1# :> /etc/resolv.conf | ||
| - | </code><code> | + | </code> |
| + | |||
| + | или [[Система безопасности UNIX#Команда chattr]] | ||
| + | |||
| + | <code> | ||
| client1# cat /etc/hosts | client1# cat /etc/hosts | ||
| </code><code> | </code><code> | ||
| Line 219: | Line 232: | ||
| === Отключение cloud-init === | === Отключение cloud-init === | ||
| <code> | <code> | ||
| - | cat /etc/cloud/cloud.cfg | ||
| - | </code><code> | ||
| - | ... | ||
| - | preserve_hostname: true | ||
| - | ... | ||
| - | </code><code> | ||
| - | # hostnamectl set-hostname ubuntu.corpX.un | ||
| - | |||
| - | Еще проще: | ||
| - | |||
| # apt purge cloud-init | # apt purge cloud-init | ||
| - | </code><code> | ||
| - | # echo 'network: {config: disabled}' > /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg | ||
| - | |||
| - | ubuntu18# rm /etc/netplan/50-cloud-init.yaml | ||
| - | |||
| - | ubuntu20# rm /etc/netplan/00-installer-config.yaml | ||
| </code> | </code> | ||
| - | === netplan === | + | === Настройка Netplan === |
| * [[Формат YAML]] | * [[Формат YAML]] | ||
| Line 253: | Line 250: | ||
| addresses: [172.16.1.200+X/24] | addresses: [172.16.1.200+X/24] | ||
| gateway4: 172.16.1.254 | gateway4: 172.16.1.254 | ||
| + | |||
| + | # routes: | ||
| + | # - to: default | ||
| + | # via: 172.16.1.254 | ||
| + | |||
| # nameservers: | # nameservers: | ||
| # addresses: [172.16.1.254] | # addresses: [172.16.1.254] | ||
| Line 259: | Line 261: | ||
| # netplan apply | # netplan apply | ||
| + | </code> | ||
| + | === Отключение Netpaln === | ||
| + | |||
| + | * [[https://linuxconfig.org/how-to-switch-back-networking-to-etc-network-interfaces-on-ubuntu-20-04-focal-fossa-linux|How to switch back networking to /etc/network/interfaces on Ubuntu 20.04 Focal Fossa Linux]] | ||
| + | |||
| + | <code> | ||
| + | # apt install ifupdown net-tools | ||
| + | |||
| + | ubuntu20/22# rm /etc/netplan/00-installer-config.yaml | ||
| + | |||
| + | ubuntu24# rm /etc/netplan/50-cloud-init.yaml | ||
| + | </code> | ||
| + | |||
| + | === Настройка systemd-resolved === | ||
| + | |||
| + | * [[https://wiki.archlinux.org/title/Systemd-resolved_(%D0%A0%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9)|archlinux systemd-resolved (Русский)]] | ||
| + | |||
| + | <code> | ||
| # cat /etc/resolv.conf | # cat /etc/resolv.conf | ||
| </code><code> | </code><code> | ||
| Line 265: | Line 285: | ||
| nameserver 127.0.0.53 | nameserver 127.0.0.53 | ||
| </code><code> | </code><code> | ||
| + | # resolvectl status | ||
| + | или | ||
| + | # systemd-resolve --status | ||
| + | |||
| # cat /etc/systemd/resolved.conf | # cat /etc/systemd/resolved.conf | ||
| </code><code> | </code><code> | ||
| [Resolve] | [Resolve] | ||
| DNS=172.16.1.254 | DNS=172.16.1.254 | ||
| + | </code><code> | ||
| + | # systemctl restart systemd-resolved | ||
| </code> | </code> | ||
| - | === Без Netpaln === | + | === Отключение systemd-resolved === |
| - | * [[https://linuxconfig.org/how-to-switch-back-networking-to-etc-network-interfaces-on-ubuntu-20-04-focal-fossa-linux|How to switch back networking to /etc/network/interfaces on Ubuntu 20.04 Focal Fossa Linux]] | ||
| - | |||
| - | <code> | ||
| - | # apt install ifupdown net-tools | ||
| - | </code> | ||
| - | |||
| - | === Без systemd-resolved === | ||
| * [[https://gist.github.com/zoilomora/f7d264cefbb589f3f1b1fc2cea2c844c|How to disable systemd-resolved in Ubuntu]] | * [[https://gist.github.com/zoilomora/f7d264cefbb589f3f1b1fc2cea2c844c|How to disable systemd-resolved in Ubuntu]] | ||
| <code> | <code> | ||
| - | # systemctl disable systemd-resolved.service | + | # systemctl disable systemd-resolved |
| # systemctl stop systemd-resolved | # systemctl stop systemd-resolved | ||
| + | |||
| + | # rm /etc/resolv.conf # this is link | ||
| </code> | </code> | ||
| + | |||
| ==== Файлы конфигурации CentOS/SL/RHEL ==== | ==== Файлы конфигурации CentOS/SL/RHEL ==== | ||
настройка_сети_в_linux.txt · Last modified: 2024/06/18 10:48 by val
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