The tag has no usage guidance.

learn more… | top users | synonyms

0
votes
1answer
44 views

how to make a Virtual ip on a 2 nodes cluster

i have a specific question, her's my situation : 1- 2 vms with drbd - pacemaker - corosync - NFs - here's my crm configuration : node san1 node san2 primitive drbd_res1 ocf:linbit:drbd \ params ...
0
votes
0answers
15 views

Cannot establish a connection to a virtual IP from the same host

I have a load balancer using LVS on my Ubuntu machine that has a virtual IP. Now I want to connect to this virtual IP from the same Ubuntu machine, but the connection establishment fails (the real ...
1
vote
0answers
49 views

How to manage virtual ip addresses in RHEL 7

We currently have an alias assigned to our NIC for the purposes of managing a HA Proxy pair. # cat /etc/sysconfig/network-scripts/ifcfg-eth0:proxy DEVICE=eth0:proxy BOOTPROTO=none ONPARENT=no ...
0
votes
0answers
33 views

How would a CARP virtual IP defined with the wrong subnet mask manifest itself?

I have a VMware cluster that hosts two pfSense virtual appliances in a CARP configuration: +-----------+------------------+------------------+--------------+ | Interface | pf0 | ...
-1
votes
1answer
30 views

Replacing host with another at runtime using same FQDN [closed]

I have host h1 running a few services. It registers with a central server and the server requires its FQDN and IP. I can specify any FQDN here. At run time, if h1 were to be replaced with another host ...
2
votes
2answers
81 views

How to point multiple top domains to IP of another top domain?

Lets say I have top domain domain-X.com with DNS A record pointing it to IP 1.2.3.4 then I have domains, which I might not have control over, they belong to customers, which owns them and may ...
-1
votes
3answers
123 views

How does HA / failover work?

Let's say we have ten servers, each one has a copy of stateless application. user enters address in a browser / client program. dns server returns a list of ip (however many people say that dns ...
0
votes
1answer
291 views

How to pass all traffic through virtual ip on linux

I have an Ethernet card on CentOS server. It has been configured: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 40:f2:e9:9b:b7:bb brd ...
0
votes
1answer
966 views

keepalived failover virtual ip parameters

I have two servers (A-master and B-backup) with one virtual ip. I need to assign the virtual ip to server B in case server A fails. For this I'm trying to configure keepalived. server A virtual ip ...
1
vote
1answer
1k views

Multimaster Keepalived Configuration (Virtual IP with Load Balancing)

Here are requirements: 1. High Availability 2. Load Balancing First configuration 1. Two linux servers have been configured with one static IP for each: 10.17.243.11, 10.17.243.12 2. Keepalived has ...
1
vote
0answers
142 views

Binding ISC DHCPD to a virtual (heartbeat) interface

I had a DHCP server that acted as a relay endpoint and worked fine. let's say this is a solo machine with eth0 with an ip of 192.168.0.10 I needed to bring this server down and join it to a cluster, ...
-1
votes
1answer
75 views

how to 2 ip virtual in public dan private with forward to different destination

Here my case, Server 1 public IP in 1 box (eth0) -> 203.x.x.55/28 and 57/28 gw 203.x.x.49 private IP (eth1) -> 10.10.8.1 Server 2 private IP in 1 box (eth0) -> 10.10.8.5/24 and 7/24 gw 10.10.8.1 ...
1
vote
1answer
2k views

Cannot get Web Sockets to work with virtual IP redirection

I can't get Web Sockets to work on my site when I access it via its virtual IP. If I use it's real (intranet) IP, everything works perfectly. If I use the virtual IP, I get this on Google Chrome ...
-6
votes
2answers
1k views

How to set a virtual ip on Vmware [closed]

I’m trying to setup a high availability failover on vmware (on a single machine - locally) for learning purposes using two Ubuntu 12.04 boxes and one virtual ip with no success. Box1 listens on ...
0
votes
1answer
836 views

How to implement virtual IPs on AWS?

Is it possible to create floating IPs within Amazon? More specifically within the VPC? If so, how can I do this? Their documentation doesn't seem to point me in the right direction. The best I could ...
0
votes
1answer
158 views

Understanding networking in a web hosting environment

Background info (pardon my lack of the correct lingo here): I'm going to be running a pair of physical servers, each hosting some simple sites with Nginx. The servers are in a colo and I will have ...
0
votes
0answers
38 views

How can I set up the most manual sort of failover possible?

I do not want my servers to automatically fail over, even if it means an hour of downtime. I have synchronous replication in my DB, and I have 4 servers (2 app and 2 database). How can I use virtual ...
0
votes
1answer
76 views

can you give me feedback on an HA architecture using linux-ha and pacemaker?

I am trying to come up with an architecture for achieving HA on one of our services (in-house service, single tcp connection for all requests). Just started reading on linux-ha and pacemaker, and i'd ...
0
votes
1answer
1k views

Issue with setting up Telnet Management on Open VPN Server

When I enable telnet on openVPN (windows) using this parameter management localhost 25333, I am not able to access the clients through their virtual IPs anymore. At the same time, when I disable this ...
0
votes
1answer
296 views

Remotely configure OpenVPN custom client certificates and static Virtual IP

On our current basic OpenVPN (on Windows) setup, we are using common client certificates for all clients. In order to introduce some kind of security, what are the possible measures I can make ? ...
3
votes
1answer
356 views

Virtual IP Failover when machine is overloaded

We have been using keepalived in combination with a virtual IP address for two years now. In the rare case that a machine crashes this works very well. But when there are issues on the box itself we ...
0
votes
3answers
2k views

Unable to connect to failover cluster

I have a 2 node failover cluster running on Windows 2008 R2. The cluster is functioning and I can failover services between the two nodes. All was working fine last week but now nothing can connect ...
-1
votes
2answers
72 views

Is a virtual IP assigned by a hosting provider?

I'm going to be setting up HA proxy with 2 physical servers, using heartbeatd. I'm going to have clients point domains to an IP address which can't change after doing so. My hosting provider has ...
4
votes
2answers
2k views

UCARP: prevent the original master from taking over the VIP when it comes back after failure?

Keepalived can do this by combining the nopreempt option and the BACKUP state on the both nodes: Prevent VRRP Master from becoming Master once it has failed Prevent master to fall back to master ...
-1
votes
1answer
3k views

Pfsense Virtual IP NATing

Am setting up Pfsense 2.0 but am stuck when it comes to port forwarding/Natting. I've done it before but not using Virtual IPs. Say I have WAN on 11.11.11.1 and LAN on 192.168.5.5, I have added a ...
0
votes
1answer
3k views

keepalived doesn't listen on virtual IP

I'm learning to use keepalived; for now within a single machine - just to make sure the forwarding works. I've started a mock webserver listening on 192.168.56.200:8080. It just replies with the ...
2
votes
1answer
4k views

IP failover with 2 nodes on different subnet: cannot ping virtual IP from second node?

I'm going to setup redundant failover Redmine: another instance was installed on the second server without problem MySQL (running on the same machine with Redmine) was configured as master-master ...
0
votes
2answers
685 views

Virtual IP failover on windows 7

i would like to find out how to set up virtual IP failover on windows 7. There are many online guides on linux heartbeat and pacemaker but i need configuration guides on how to set up virtual IP ...
0
votes
1answer
517 views

How do I configure a virtual IP interface on RHEL 4 for HA failover

I have two servers, each with a physical IP address on a physical network interface: Server A: 192.168.0.1 (eth0) - PRIMARY Server B: 192.168.0.2 (eth0) - BACKUP I want to run an application on ...
0
votes
3answers
1k views

Virtual IP or Load balancing for a http/ mysql cluster

First of all i have to say i'm very very newbie as sysadmin. I'm trying to do someone else's work, and i have almost 0 experience in clustering / load balancing and related stuff. This is the ...
0
votes
1answer
1k views

Cannot access LAN virtual IP from WAN using iptables NAT

Here's the setup: 2 servers running CentOS 5.6 (hostnames = "master1" and "master2") "master1" LAN IP is 10.224.45.130 and WAN IP is 184.107.x.1 "master2" LAN IP is 10.224.45.131 and WAN IP is ...
1
vote
0answers
71 views

IP migration by filtering

I'm looking for a solution to use virtual IPs between 2 hosts, but in a specific way. I would like to have the addresses bound to both hosts at once, but filtered out on the inactive one (arp ...