Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [failover]

21 questions
11
votes
1 answer

Is it possible to allow multiple SSH host keys for the same IP?

I have a script that needs to connect to the currently active head of a high-availability cluster. Each node in the cluster has a fixed hostname and IP address. The current head additionally has a "virtual IP". In the case of a switchover or…
n.st
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6
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3 answers

GlusterFS how to failover (smartly) if a mounted Server is failed?

In GlusterFS, lets say i have 2 Nodes (Servers) on a Volume. Lets say the volume info is something like this: Volume Name: volume-www Brick1: gluster-server-01:/volume-www/brick Brick2: gluster-server-02:/volume-www/brick From the Client, as we…
夏期劇場
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2
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1 answer

What can I do to enable automatic switching to a backup network when there is packet loss?

If I create a connection using network bonding (using the mode active-backup), then although automatic switching to the backup network occurs if I pull out the network cable, it does not occur when the problem is no packets getting through. What…
mcarans
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2
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0 answers

Linux bonding failover issue between two cisco switch

I have above scenario where server has bond0 interface connected to SW1 and SW2 relevant interface of server, last night somehow SW1 got rebooted and server lost eth0 connectivity but it didn't failover to eth1 also every after switch rebooted…
Satish
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2
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0 answers

keepalived: How to only demote master if a backup can take over?

I am currently trying to setup a highly available system using keepalived. I have a check-script that returns rc=0 if the host it is executed on is the master. Unfortunately this script can fail for various reasons which will lead to the demotion of…
Tim Keller
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2
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1 answer

How to make HA Heartbeat failover when either of two NICs connection is lost?

I was successful in configuring a simple Heartbeat setup on Ubuntu 12.04, which will fail-over two VIPs to a second server when BOTH Ethernet links fail. What I can't figure out is how to fail-over two VIPs when either of the two NICs loses a link…
user258339
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2 answers

SSH connection issue with failover gateway

I have a system which can be accessed via SSH and HTTP. The system have two interfaces (eth0, eth1), and is working with Slackware 14.1. eth0 : 192.168.1.99, LTE Ethernet Gateway/Modem eth1 : 172.16.101.250, Local network (with internet access) eth1…
Alexandre Lavoie
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1
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0 answers

Ucarp with 2 interfaces

I have a server that has 2 interfaces which works like a router and a firewall too on debian. I want to use ucarp for redundency purposes. Question is how do i configure ucarp for 2 interfaces?
user19215
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1
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1 answer

Configuring Additional Failover IPs in Debian 9

How can I properly configure failover IPs in Debian 9? I tried below settings after restart /etc/init.d/networking restart new FO IPs are pingable but server goes down for upto 30 minutes. I think there is something missing in interface…
Mark Fulghum
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1
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0 answers

Currently I have two node cluster (SLES as HANA DB). I would like to check in which condition a failover will be triggered?

Below are the conditions. We could not test these because these nodes are already in production. Replication between the nodes fail. Replication is working but network link is down with no bonding. Replication is working but one of the NIC in…
Fabian19
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Gateway failover using netplan

I'm having trouble setting up 2 IP address so that if one fails it will use the secondary IP address. I've setup netplan as shown in the picture. I can connect via ssh using both IP address, I test which IP address is the main one by using…
Arran Lawley
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1
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0 answers

Cannot SSH to VPS After ifup?

I have a vps hosted by OVH with CentOS installed. I purchased 9 failover IPs and configured them as eth0:1-eth0:8. After I edited the config files to what was recommended by OVH…
Duffman
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0 answers

How to route to Virtual IP as gateway

I have environment on Centos 6.7 Final, 2 Loadbalancer failover (Haproxy, keepalived), 3 Web Server (nginx - PHP-Fpm). LB1 (Public x.x.x.233, Private 10.110.120.21), LB2 (Public x.x.x.235, Private 10.110.120.23), Virtual (Public x.x.x.234, Private…
Pathic
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1
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2 answers

apache failover solution

We have 2 Apache Web-Servers which is getting replicated with rsync command, when the primary host is down, we manually change the IP and make it up. Now we are trying to find way to do an automatic switchover/failover environment. Firstly when…
user155159
1
vote
1 answer

Why can I connect to the IP of a network interface (on a server with multiple network interfaces) when the network cable is removed?

I have a Server with multiple (four) network interfaces running Arch Linux when I encountered something strange that I cannot explain. I have two interfaces configured to the the ip addresses 192.168.100.11/24 and 192.168.100.12/24 (using two netctl…
deepthought-64
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