ha:keepalived
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ha:keepalived [2023/07/18 18:09] – [Keepalived] veera | ha:keepalived [2023/07/18 18:40] (current) – [2. Configure keepalived on both MASTER and SLAVE] veera | ||
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- | ==== 1. Install Trisul Network Analytics | + | ==== 2. Configure keepalived |
+ | |||
+ | Follow instructions in [[admin: | ||
+ | |||
+ | Ensure the PRIORITY of MASTER is atleast 50 higher than the priority specified in the SLAVE node. | ||
+ | |||
+ | |||
+ | ==== 3. Use IPTABLES on MASTER ==== | ||
+ | |||
+ | |||
+ | During normal operation both nodes will be in active-active mode. The NETFLOW sent to the MASTER node will be mirrored to the SLAVE node using IPTABLES rule. You can also use the [[https:// | ||
iptables DNAT rule | iptables DNAT rule | ||
- | < | ||
- | dnf install iptables iptables-services | ||
- | </ | ||
< | < | ||
- | iptables -t nat -A PREROUTING -p udp -m udp --dport 2055 -j DNAT --to-destination 10.10.100.116 | + | iptables -t nat -A PREROUTING |
+ | | ||
+ | | ||
systemctl start iptables | systemctl start iptables | ||
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</ | </ | ||
- | Make it persistent | + | Make it persistent |
+ | |||
+ | |||
+ | < | ||
+ | dnf install iptables iptables-services | ||
+ | </ | ||
< | < | ||
iptables-save > / | iptables-save > / | ||
</ | </ | ||
+ | |||
+ | |||
+ | To list the NAT rule | ||
+ | |||
+ | < | ||
+ | iptables -t nat -v -L -n --line-number | ||
+ | </ | ||
+ | |||
+ | |||
+ | To delete (for testing) | ||
+ | |||
+ | < | ||
+ | iptables -t nat -D PREROUTING 1 | ||
+ | </ | ||
+ | |||
ha/keepalived.1689683971.txt.gz · Last modified: 2023/07/18 18:09 by veera