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протокол_carp [2016/04/15 10:44] val |
протокол_carp [2021/07/08 08:04] (current) admin [Смена ролей узлов] |
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====== Протокол CARP ====== | ====== Протокол CARP ====== | ||
+ | * [[https://ru.wikipedia.org/wiki/VRRP|VRRP]] | ||
+ | * [[https://ru.wikipedia.org/wiki/CARP|CARP]] | ||
* [[Сервис NTP]] | * [[Сервис NTP]] | ||
- | ===== Ubuntu ===== | + | ===== Debian/Ubuntu ===== |
+ | * [[https://serverfault.com/questions/298776/ucarp-promote-slave-to-master|ucarp: promote slave to master]] | ||
+ | * [[https://askubuntu.com/questions/1149275/using-netplan-with-ucarp|Using netplan with ucarp]] + systemd | ||
==== Установка ==== | ==== Установка ==== | ||
<code> | <code> | ||
- | root@nodeN:~# apt-get install ucarp | + | root@nodeN:~# apt install ucarp |
</code> | </code> | ||
Line 15: | Line 19: | ||
root@nodeN:~# less /etc/network/if-up.d/ucarp | root@nodeN:~# less /etc/network/if-up.d/ucarp | ||
- | |||
- | root@nodeN:~# ifdown eth0 | ||
root@nodeN:~# cat /etc/network/interfaces | root@nodeN:~# cat /etc/network/interfaces | ||
Line 25: | Line 27: | ||
address 192.168.X.N | address 192.168.X.N | ||
netmask 255.255.255.0 | netmask 255.255.255.0 | ||
+ | |||
ucarp-vid 1 | ucarp-vid 1 | ||
ucarp-vip 192.168.X.254 | ucarp-vip 192.168.X.254 | ||
Line 34: | Line 37: | ||
... | ... | ||
</code><code> | </code><code> | ||
- | root@nodeN:~# cat /usr/share/ucarp/vip-up | + | root@nodeN:~# less /usr/share/ucarp/vip-up |
</code><code> | </code><code> | ||
#!/bin/sh | #!/bin/sh | ||
Line 40: | Line 43: | ||
/sbin/ifup $1:ucarp | /sbin/ifup $1:ucarp | ||
</code><code> | </code><code> | ||
- | root@nodeN:~# cat /usr/share/ucarp/vip-down | + | root@nodeN:~# less /usr/share/ucarp/vip-down |
</code><code> | </code><code> | ||
#!/bin/sh | #!/bin/sh | ||
Line 49: | Line 52: | ||
==== Запуск ==== | ==== Запуск ==== | ||
<code> | <code> | ||
+ | root@nodeN:~# ifdown --force eth0 | ||
+ | |||
root@nodeN:~# ifup eth0 | root@nodeN:~# ifup eth0 | ||
</code> | </code> | ||
==== Проверка ==== | ==== Проверка ==== | ||
+ | |||
+ | * [[Сигналы#Отправка сигнала]] | ||
+ | |||
<code> | <code> | ||
root@nodeN:~# ps ax | grep carp | root@nodeN:~# ps ax | grep carp | ||
root@nodeN:~# ifconfig eth0:ucarp | root@nodeN:~# ifconfig eth0:ucarp | ||
+ | |||
+ | root@nodeN:~# pkill -USR1 ucarp | ||
+ | |||
+ | root@nodeN:~# killall -USR1 ucarp | ||
+ | |||
+ | root@nodeN:~# grep carp /var/log/syslog | ||
</code> | </code> | ||
- | === Остановка === | + | ==== Смена ролей узлов ==== |
<code> | <code> | ||
- | root@nodeN:~# ifdown eth0:ucarp | + | wincmd:\> arp -a |
+ | |||
+ | masternode# pkill -USR2 ucarp | ||
+ | |||
+ | masternode# killall -USR2 ucarp | ||
+ | |||
+ | wincmd:\> arp -a | ||
</code> | </code> | ||
+ | |||
===== FreeBSD (user land) ===== | ===== FreeBSD (user land) ===== | ||
Line 68: | Line 89: | ||
==== Установка ==== | ==== Установка ==== | ||
<code> | <code> | ||
- | [nodeN:~] # pkg_add -r ucarp | + | [nodeN:~] # pkg install ucarp |
</code> | </code> | ||
==== Настройка ==== | ==== Настройка ==== | ||
<code> | <code> | ||
- | [node1:~] # cat /etc/rc.conf | + | [nodeN:~] # less /usr/local/etc/rc.d/ucarp |
+ | |||
+ | [nodeN:~] # cat /etc/rc.conf | ||
</code><code> | </code><code> | ||
... | ... | ||
+ | ucarp_src="192.168.X.N" | ||
ucarp_enable="YES" | ucarp_enable="YES" | ||
ucarp_vhid="1" | ucarp_vhid="1" | ||
ucarp_if="em0" | ucarp_if="em0" | ||
- | ucarp_src="192.168.X.1" | ||
ucarp_addr="192.168.X.254" | ucarp_addr="192.168.X.254" | ||
- | # ucarp_advskew="50" | ||
- | # ucarp_preempt="YES" # For always use master with lover advskew | ||
ucarp_pass="secret" | ucarp_pass="secret" | ||
- | ucarp_upscript="/usr/local/etc/vip-up.sh" | + | ucarp_upscript="/usr/local/sbin/ucarp-up" |
- | ucarp_downscript="/usr/local/etc/vip-down.sh" | + | ucarp_downscript="/usr/local/sbin/ucarp-down" |
</code><code> | </code><code> | ||
- | [node2:~] # cat /etc/rc.conf | + | [nodeN:~] # cat /usr/local/sbin/ucarp-up |
</code><code> | </code><code> | ||
+ | #!/bin/sh | ||
... | ... | ||
- | ucarp_enable="YES" | + | /sbin/ifconfig "$1" alias "$2" netmask 255.255.255.255 |
- | ucarp_vhid="1" | + | |
- | ucarp_if="em0" | + | |
- | ucarp_src="192.168.X.2" | + | |
- | ucarp_addr="192.168.X.254" | + | |
- | # ucarp_advskew="100" | + | |
- | # ucarp_preempt="YES" | + | |
- | ucarp_pass="secret" | + | |
- | ucarp_upscript="/usr/local/etc/vip-up.sh" | + | |
- | ucarp_downscript="/usr/local/etc/vip-down.sh" | + | |
</code><code> | </code><code> | ||
- | [nodeN:~] # cat /usr/local/etc/vip-up.sh | + | [nodeN:~] # cat /usr/local/sbin/ucarp-down |
</code><code> | </code><code> | ||
#!/bin/sh | #!/bin/sh | ||
- | ifconfig em0 inet 192.168.X.254/32 alias | + | ... |
+ | /sbin/ifconfig "$1" -alias "$2" | ||
+ | ... | ||
</code><code> | </code><code> | ||
- | [nodeN:~] # chmod +x /usr/local/etc/vip-up.sh | + | [nodeN:~] # service ucarp start |
- | </code><code> | + | </code> |
- | [nodeN:~] # cat /usr/local/etc/vip-down.sh | + | |
+ | ===== Дополнительные материалы ===== | ||
+ | |||
+ | * [[http://serverfault.com/questions/179263/multiple-ucarp-vips-on-single-interface-with-debian-ubuntu|Multiple UCARP VIPs on single Interface with Debian/Ubuntu]] | ||
+ | |||
+ | ==== Ubuntu вариант запуска процесса вручную ==== | ||
+ | |||
+ | === Установка === | ||
+ | <code> | ||
+ | root@nodeN:~# apt-get install ucarp | ||
+ | </code> | ||
+ | |||
+ | === Настройка === | ||
+ | <code> | ||
+ | root@nodeN:~# cat /etc/vip-up.sh | ||
</code><code> | </code><code> | ||
#!/bin/sh | #!/bin/sh | ||
- | ifconfig em0 inet 192.168.X.254/32 -alias | + | /sbin/ip addr add 192.168.X.254/32 dev "$1" |
</code><code> | </code><code> | ||
- | [nodeN:~] # chmod +x /usr/local/etc/vip-down.sh | + | root@nodeN:~# cat /etc/vip-down.sh |
</code><code> | </code><code> | ||
- | [nodeN:~] # /usr/local/etc/rc.d/ucarp start | + | #!/bin/sh |
+ | /sbin/ip addr del 192.168.X.254/32 dev "$1" | ||
+ | </code><code> | ||
+ | root@nodeN:~# chmod +x /etc/vip-up.sh /etc/vip-down.sh | ||
</code> | </code> | ||
- | ==== Дополнительные материалы ==== | + | === Запуск (можно прописать в /etc/rc.local) === |
+ | <code> | ||
+ | root@node1:~# ucarp -i eth0 -s 192.168.X.1 -v 1 -p secret -a 192.168.X.254 -u /etc/vip-up.sh -d /etc/vip-down.sh -z -B | ||
- | * [[http://serverfault.com/questions/179263/multiple-ucarp-vips-on-single-interface-with-debian-ubuntu|Multiple UCARP VIPs on single Interface with Debian/Ubuntu]] | + | root@node2:~# ucarp -i eth0 -s 192.168.X.2 -v 1 -p secret -a 192.168.X.254 -u /etc/vip-up.sh -d /etc/vip-down.sh -z -B |
+ | </code> | ||
+ | Примечания: | ||
+ | |||
+ | * Не смотря на ОБЯЗАТЕЛЬНОЕ наличие ключа -a 192.168.X.254 адрес повторно приходится присваивать/удалять в скриптах | ||
+ | * If you want a "preferred" master to immediately become a master even if another host is already the master: a) add the --preempt (or -P) switch to *all* hosts b)use a lower skew (-k) or a lower base for the "preferred" one. | ||
+ | |||
+ | === Проверка === | ||
+ | <code> | ||
+ | root@nodeN:~# ip addr show dev eth0 | ||
+ | </code> | ||
+ | |||
+ | === Остановка === | ||
+ | <code> | ||
+ | root@nodeN:~# killall ucarp | ||
+ | </code> | ||
- | === FreeBSD (kernel land) === | + | ==== FreeBSD (kernel land) ==== |
* [[http://www.freebsd.org/doc/en/books/handbook/carp.html|Common Address Redundancy Protocol (CARP) (freebsd handbook)]] | * [[http://www.freebsd.org/doc/en/books/handbook/carp.html|Common Address Redundancy Protocol (CARP) (freebsd handbook)]] | ||
Line 130: | Line 179: | ||
[[Управление ядром и модулями в FreeBSD]] | [[Управление ядром и модулями в FreeBSD]] | ||
- | == Настройка == | + | === Настройка === |
<code> | <code> | ||
Line 154: | Line 203: | ||
</code> | </code> | ||
- | == Проверка == | + | === Проверка === |
<code> | <code> | ||
nodeN# ifconfig carp0 | nodeN# ifconfig carp0 |