Questions tagged [vrrp]

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Keepalived - Failover when both vrrp AND track script failed

I've made a track script which is ran at each check by keepalived. When the VRRP check is failing, the BACKUP node become MASTER, even if the track script is returning 0 status (good one). I just ...
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13 views

Private interface not replying

I'm trying to reach a server on an OVH cloud with its private interface. Said server is a Debian 9 machine with multiple private interfaces. When I ping one of the private interfaces from a server on ...
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15 views

Can't reach backup server with VRRP

I've set up Keepalived VRRP on my company's public cloud so that I can create private subnets between the servers and make these subnets communicate and have redundancy. Here's a simplified schema of ...
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32 views

Dual Nic Failover and Vrrp Gateway

I really hope someone can help me here. I have the following Setup: 2 Routers exposing a Routed Gateway Ip 192.168.1.1 via vrrp 1 Server connected to each via a single cable Schematically it looks ...
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14 views

Keepalived IP assignment even in case of EQUAL state

In my case I would like to have no IP assignment in case a service watched by keepalived is not running in any of my servers. For that I configured my keepalived to start with EQUAL state instead or ...
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1answer
143 views

Keepalived not executing scripts

I have a few state change scripts executed and they seem to be called on when I view the service status but they never run. If I execute the script manually it works fine. Any thoughts? Using Deb9.
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2answers
140 views

Keepalived two master have virtual IP simultaneously

It's really strange on my BACKUP device always turn to MASTER several secs. I've already search both master have virtual IP simultaneously cases,and all of there solution I've tried, but still not ...
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1answer
79 views

Split brain on keepalived but both hosts get each others messages

I did a little digging and most issues I saw were resolved with a dive into firewalls and multicast fixes but from my pastes below that does not seem to be my issue. I am a little stumped on what it ...
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1answer
67 views

Alias address on aws ec2 between different availability zones

i have a setup: Orange - is availability zones(AZ). in each AZ there is by 2 subnets: 10.0.1.0/27 & 10.0.0.0/27 10.0.1.32/27 & 10.0.0.32/27 And i'm trying to set up VRRP (it like round ...
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374 views

multiple networks in keepalived configuration

I have two router(lxc containers) seated in the distribution layer of my network and I want to implement HA for them. The routers have 114 network interfaces and I want that they share a virtual ip ...
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1answer
608 views

HA Squid with Keepalived

We're trying to setup two HA services: Explicit forwarding proxy using Squid (port 8080) SMTP relay to Office365 using Postfix For both setups we have 2 VM's with a default Debian 7 install, and I'...
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2answers
950 views

Start keepalived without IP on interface?

I want to use keepalived on an interface that will get an IP at some point but will not have one initially, can I set this up somehow in the config? If I try to start it now keepalived errors out as ...
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421 views

Spurious traffic hitting Keepalived

We use Keepalived (running on RHEL 7) to manage shared IP addresses on our 3 HAProxy servers. Each server has 2 interfaces, one with a public IP and one with a private IP. We are migrating from a pair ...
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581 views

keepalived failover downtime

I have a simple setup with keepalived configured on 2 Ubuntu 16.04 servers (VMWare VM's) I have a VIP shared between the hosts and everything is working fine. When I stop or restart one server the ...
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1answer
1k views

Meaning of virtual_ipaddress_excluded in keepalived configuration

I had some problems with my keepalived configuration and found the answer in this post: Keepalived for more than 20 virtual addresses But I am not sure about the difference between virtual_ipaddress ...
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1answer
515 views

How can a server respond with a different IP (Virtual IP) when using Keepalived?

I have been studying Keepalived for High Availability purposes. I have some fundamental questions concerning TCP/IP behavior when Keepalived is in place. With Keepalived, clients can access the ...
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1answer
54 views

Smooth transfer of service IP to backup system

I'm trying to research the best way to find a HA solution plus (little) load balancing for our TCP services. All solutions I found (e.g. HAProxy, LVS) use a master machine which holds the TCP service ...
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1answer
2k views

Keepalived VIP is active on both servers

I have configured keepalived on two RHEL 7 servers as below Primary server vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 100 advert_int 1 ...
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0answers
4k views

Keepalived sends both unicast and multicast VRRP advertisements

I have three clusters of keepalived servers, two instances in each cluster, each cluster with a unique VIP and Router Id. Two of them are working fine using unicast VRRP advertisements, but one of ...
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1answer
1k views

What does mean EQUAL state of keepalived config?

I faced with new for me, unknown value of "state" variable - "EQUAL". Be more specific: vrrp_script chk_master { script "/var/<path>/scripts/cmaster.sh" timeout 25 interval 30 ...
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1answer
2k views

NTP high-availability behind a Virtual IP

Is it a bad practice to put a NTP server behind a Virtual IP? (VRRP) How much would it be preferred to simply have the clients talk directly to the 2 instances? Since the NTP clients keeps the ...
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2answers
1k views

Can the VRRP ID of 2 different systems clash (keepalived and cisco/force10)

Since Keepalived and Cisco/Force10 both use VRRP, and use an ID Range of 0-255: 1) Would using the same number in the same vlan cause a issues. 2) Would using a different number in the same vlan ...
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1answer
74 views

Negotitate VRRP on a private link between routers (Possible?)

I have a topology similar to this one: R1 and R2 are two physical machines acting as routers. (Running some linux distro with Keepalived) R1 and R2 are connected to one another with a private link. ...
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1answer
853 views

Network WAN load-balancing over Multiple Firewalls

Currently we have a Cisco ISA570 Firewall which does failover load-balancing between two ISP links. I would like to get a Sonicwall NSA6000 which should be primary and the ISA570 as a failover device....
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1answer
4k views

Keepalived configuration for VRRP

I am trying to understand if there is a relation between garp_master_delay and advert_int. In all the configurations I saw, advert_int was less than garp_master_delay. Is there any reason for this? ...
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1answer
4k views

keepalived - random re-elections

We have set up 3 servers running keepalived . We started noticing some random re-elections occurring which we can't explain so I cam here looking for advice. Here is our configuration: MASTER: ...
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1answer
390 views

Make keepalived send 0 priority when going to FAULT state

When stopping (service keepalived stop), keepalived does send the priority 0 adverts so the backup server takes over almost immediately. However, when it goes to fault mode (check script returns not ...
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1answer
2k views

Same VRRP group, multiple VLAN

Let's say a gateway has traffic between vlan 11 and 22: Gateway 1 -- FastEthernet 0/1.1 -- vlan 11 -- 192.168.11.1 Gateway 1 -- FastEthernet 0/2.2 -- vlan 22 -- 192.168.22.1 Gateway 2 -- ...
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1answer
1k views

keepalived config is not working correctly with virtualbox vms

my keepalived configuration is not working correctly. I have two virtual testing machines (virtualbox) to try some things out with keepalived/vrrp. Bot can ping each other flawlessly (internal ...
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1answer
3k views

Keepalived in ring architecture, or other better approach

I have three load balancer (LB1, LB2, LB3) and plan to use ring architecture for active-active setup, e.g. LB1 LB2 LB3 IP1 IP2 IP3 Idea as below: If LB1 failed, IP1 will be floated to ...
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1answer
2k views

How to configuration keepalived on Amazon EC2?

I rad some article. Keepalived over GRE tunnel for failover on VPS environment http://blog.killtheradio.net/how-tos/keepalived-haproxy-and-failover-on-the-cloud-or-any-vps-without-multicast/ but, I ...
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1answer
904 views

Can VRRP be used between 2 interfaces on the same node instead of between 2 nodes?

I have two 3750's joined together with a stackwise cable. I have a connection between one of the 3750's physical port and a gateway router. Last week one of the 3750's failed due to power issues, ...
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3answers
3k views

Linux Virtual IP Options

There seem to be lots of options in Linux to provide a virtual IP for failover between multiple hosts. Some that I have found are heartbeat, vrrpd, carp, and keepalived. In Linux I only have ...
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1answer
818 views

Multicast routing

I got two firewalls running Keepalived and working ok. I would like to pass the vrrp multicast traffic bethween a direct back to back link between those firewalls (that direct link is already used by ...
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3answers
1k views

vrrp routing ping, but not other traffic

I've got two VMs running BusyBox (under ESX). These machines function only as load balancers. I'm using pen to do the load balancing on each machine which is working fine. But when I fire up vrrpd ...
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1answer
285 views

Clustering Gateway Computer

We use linux computer as our office gateway. It has two Internet connection and one LAN connection. My problem is that whenever there is any gateway software configuration problem or hardware problem, ...
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3answers
15k views

Prevent VRRP Master from becoming Master once it has failed

I have two machines (A and B, A is Master) running VRPP (from keepalived) for a Virtual IP. How can I prevent A from becoming Master again if it has failed and come back up (for whatever reason)? I'...