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How does dynamic routing stack up against multipathing/bonding techniques for a remote gateway?

I have a remote gateway to which I connect using two IKEv2 VTIs, OpenVPN, Wireshark, or a combination of these in /30 tunnels. Then create an ECMP route using OSPF (FRR) and the rest is like magic. I ...
Vita's user avatar
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Apache failover BalanceMember

An interesting question crept up on me when I made the following configuration (names and IPs are fictitious). Background: route 1 - 10.10.10.10 is an IPSec tunnel route 2 - 20.20.20.20 to the ...
Tsunani's user avatar
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2 answers
514 views

Will `rm -rf` continue deleting if it can't delete something in the middle?

Consider a dir garbage containing many files and directories. If I run rm -rf garbage, but some files or directories within garbage are busy by the OS/NFS/etc., so rm -rf will fail for them. Will it ...
Serge Rogatch's user avatar
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Debian 9 failover between WAN and cellular module

I'm trying to configure a debian 9 device to have cellular failover in case WAN fails (or vice versa). I tried doing this with ifenslave, the failover works in general but it doesn't switch gateways. ...
deschuele's user avatar
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1 answer
878 views

Request to virtual ip is not forwarding while trying IP Failover using keepalived on centos 7

I am trying to test IP failover using keepalived on centos 7. I have three instances of centos 7 installed on my vm. So I have 3 servers. I am trying to run keepalived on two of them, 3rd centos will ...
Muhammad Saleem's user avatar
1 vote
2 answers
1k views

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....
Alexandre Lavoie's user avatar
1 vote
0 answers
98 views

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's user avatar
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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 ...
Mark Fulghum's user avatar
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0 answers
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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. ...
Fabian19's user avatar
1 vote
0 answers
525 views

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 ...
Arran Lawley's user avatar
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How to verify which is primary node in a HANA DB cluster operating on SLES 12?

Currently I have two HANA DB servers in a cluster and replication is not running. Upon checking from SUSE Hawk, node 2 is acting as primary node and node 1 is available. How do I confirm that node 2 ...
Fabian19's user avatar
2 votes
1 answer
902 views

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 ...
mcarans's user avatar
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12 votes
3 answers
21k views

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 "...
n.st's user avatar
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Triangular direct connect ethernet network using the 2 possible paths (bonding + failover)

imagine this topology: A / \ B --- C In this situation, A can talk to B using the A <> B link of couse, but could also use the A <> C <> B links. Is it possible with a linux ...
Benjamin Gillissen's user avatar
2 votes
0 answers
1k views

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 ...
Satish's user avatar
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1 vote
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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 as: DEVICE="eth0:0" ...
Duffman's user avatar
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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 ...
Tim Keller's user avatar
1 vote
0 answers
246 views

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....
Pathic's user avatar
  • 139
1 vote
2 answers
1k views

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 ...
user avatar
6 votes
3 answers
17k views

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-...
夏期劇場's user avatar
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1 vote
1 answer
1k views

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....
deepthought-64's user avatar
1 vote
1 answer
605 views

Failover boot setup

I am considering a failover boot setup which can tolerate any single drive loss. The primary system partitions (/, /home, /usr etc.) shall reside on a flash drive. /var and /tmp partitions shall be ...
port443's user avatar
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2 votes
1 answer
398 views

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 ...
user258339's user avatar