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сервис_keepalived [2021/12/10 09:43] val |
сервис_keepalived [2024/02/26 17:10] val [Настройка VRRP] |
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| * [[https://winitpro.ru/index.php/2019/09/09/keepalived-ha-balansirovka-plavayushhiy-ip-adres/|Keepalived: настройка высокой доступности и плавающих IP адресов в CentOS 7]] | * [[https://winitpro.ru/index.php/2019/09/09/keepalived-ha-balansirovka-plavayushhiy-ip-adres/|Keepalived: настройка высокой доступности и плавающих IP адресов в CentOS 7]] | ||
| * [[https://habr.com/ru/post/524688/|Отказоустойчивый кластер с балансировкой нагрузки с помощью keepalived]] | * [[https://habr.com/ru/post/524688/|Отказоустойчивый кластер с балансировкой нагрузки с помощью keepalived]] | ||
| + | |||
| + | |||
| + | ===== Установка ==== | ||
| <code> | <code> | ||
| - | nodeN# apt install keepalived | + | # apt install keepalived |
| + | </code> | ||
| - | node1# cat /etc/keepalived/keepalived.conf | + | ===== Настройка VRRP ==== |
| + | |||
| + | * Разобраться: как ведет себя в случае link down eth1/2 | ||
| + | * [[https://github.com/acassen/keepalived/blob/master/doc/samples/keepalived.conf.vrrp.routes]] | ||
| + | |||
| + | <code> | ||
| + | nodeN# cat /etc/keepalived/keepalived.conf | ||
| </code><code> | </code><code> | ||
| vrrp_instance VI_1 { | vrrp_instance VI_1 { | ||
| - | state MASTER | + | |
| + | # state MASTER | ||
| + | # state BACKUP | ||
| interface eth0 | interface eth0 | ||
| + | # interface br0 | ||
| virtual_router_id 1 | virtual_router_id 1 | ||
| virtual_ipaddress { | virtual_ipaddress { | ||
| Line 17: | Line 31: | ||
| # 192.168.X.254 label br0:1 | # 192.168.X.254 label br0:1 | ||
| 172.16.1.X/24 dev eth1 | 172.16.1.X/24 dev eth1 | ||
| - | 172.16.2.X/24 dev eth3 | + | # 172.16.2.X/24 dev eth2 |
| - | } | + | |
| - | notify_backup "/usr/local/bin/vrrp.sh BACKUP" | + | |
| - | notify_master "/usr/local/bin/vrrp.sh MASTER" | + | |
| - | } | + | |
| - | </code><code> | + | |
| - | node2# cat /etc/keepalived/keepalived.conf | + | |
| - | </code><code> | + | |
| - | vrrp_instance VI_1 { | + | |
| - | state BACKUP | + | |
| - | interface eth0 | + | |
| - | virtual_router_id 1 | + | |
| - | virtual_ipaddress { | + | |
| - | 192.168.X.254 label eth0:1 | + | |
| - | # 192.168.X.254 label br0:1 | + | |
| - | 172.16.1.X/24 dev eth1 | + | |
| - | 172.16.2.X/24 dev eth3 | + | |
| } | } | ||
| + | # virtual_routes { | ||
| + | # 0.0.0.0/0 via 172.16.1.254 dev eth1 | ||
| + | # } | ||
| notify_backup "/usr/local/bin/vrrp.sh BACKUP" | notify_backup "/usr/local/bin/vrrp.sh BACKUP" | ||
| notify_master "/usr/local/bin/vrrp.sh MASTER" | notify_master "/usr/local/bin/vrrp.sh MASTER" | ||
| Line 48: | Line 49: | ||
| MASTER) | MASTER) | ||
| ip route delete default | ip route delete default | ||
| - | ip route add default via 172.16.1.254 table 101 | + | ip route add default via 172.16.1.254 |
| - | ip route add default via 172.16.2.254 table 102 | + | |
| - | /root/select_isp.sh | + | # ip route add default via 172.16.1.254 table 101 |
| + | # ip route add default via 172.16.2.254 table 102 | ||
| + | # /root/select_isp.sh | ||
| ;; | ;; | ||
| BACKUP) | BACKUP) | ||
| + | ip route delete default | ||
| ip route add default via 192.168.X.254 | ip route add default via 192.168.X.254 | ||
| ;; | ;; | ||
| Line 58: | Line 62: | ||
| </code><code> | </code><code> | ||
| nodeN# chmod +x /usr/local/bin/vrrp.sh | nodeN# chmod +x /usr/local/bin/vrrp.sh | ||
| + | </code> | ||
| + | |||
| + | ===== Настройка балансировки нагрузки ===== | ||
| + | |||
| + | * [[https://habr.com/ru/post/104621/|Балансировка нагрузки с LVS]] | ||
| + | |||
| + | <code> | ||
| + | gate# cat /etc/keepalived/keepalived.conf | ||
| + | </code><code> | ||
| + | # prod_nodes | ||
| + | virtual_server 172.16.1.X 1194 { | ||
| + | protocol UDP | ||
| + | real_server 192.168.X.201 1194 { | ||
| + | weight 1 | ||
| + | TCP_CHECK { | ||
| + | connect_port 7505 | ||
| + | } | ||
| + | } | ||
| + | real_server 192.168.X.202 1194 { | ||
| + | weight 1 | ||
| + | TCP_CHECK { | ||
| + | connect_port 7505 | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | |||
| + | # test_nodes | ||
| + | virtual_server 172.16.1.X 2194 { | ||
| + | real_server 192.168.X.203 1194 { | ||
| + | TCP_CHECK { | ||
| + | connect_port 7505 | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | |||
| + | |||
| + | #virtual_server 172.16.1.X 80 { | ||
| + | # protocol TCP | ||
| + | |||
| + | # real_server 192.168.X.10 82 {} | ||
| + | # real_server 192.168.X.10 8000 {} | ||
| + | |||
| + | # real_server 192.168.X.10 NNNNN {TCP_CHECK {}} | ||
| + | # ... | ||
| + | |||
| + | # real_server 192.168.X.201 NNNNN {TCP_CHECK {}} | ||
| + | # ... | ||
| + | # real_server 192.168.X.203 NNNNN {TCP_CHECK {}} | ||
| + | # ... | ||
| + | # real_server 192.168.X.10 80 {} | ||
| + | #} | ||
| + | </code> | ||
| + | |||
| + | ===== Запуск и мониторинг ===== | ||
| + | <code> | ||
| + | # keepalived -t | ||
| + | |||
| + | # service keepalived restart | ||
| + | |||
| + | # watch "service keepalived status | cat" | ||
| + | |||
| + | # watch ipvsadm -L -n | ||
| - | nodeN# service keepalived restart | + | # ipvsadm -L -n -c |
| </code> | </code> | ||
сервис_keepalived.txt · Last modified: 2024/04/09 11:27 by val
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