Questions tagged [High availability] (110)

1
answer

Why do I get when testing in Golang FAIL?

Hello. Check subject test in Golang. Wrote a simple test (compare two numbers 3 answers), test passes, test coverage is 100%, but why in the end, the system writes FAIL? It seems that according to documentation there should be PASS. The program simple.go package main func Question(a int, b int) int{ if a > b { retur...
Shayna asked April 18th 20 at 13:36
1
answer

Can Heartbeat do two checks for a decision on the unavailability of a node?

Hello. Planned to write a bash script to monitor server availability and found out that there is already a Heartbeat. But I want to do a more complex check to make a decision on the unavailability of the desired server. Example: srv1 server hosted in datacenter-1 srv2 server hosted in datacenter-2 Want to inaccessibility sr...
Merl_Rodriguez13 asked April 7th 20 at 16:29
4
answers

I read that when NIc teming can be connected to different switches(not LACP) if so then how and from whom the server will get the IP address?

Please help to understand If we combine the two interfaces, NIC-teaming-om and these interfaces are connected to different switches then what will happen with the IP addresses ?
1
answer

In conjunction DRBD + Heartbeat server is dumped into the Secondary, how to fix?

Doing a HA Cluster. Chose a bunch of DRBD + Heartbeat. In normal mode everything works, in the manual mode switches the Primary and Secondary. But when you disable the Primary server, the second is getting them and is dumped into the Secondary after a while. And correspondingly the cluster is unavailable until you are up fi...
deon.MacGyver asked April 7th 20 at 09:31
1
answer

Keepalived. VRRP. Can I use Keepalived, if 2 servers in different data centers?

Hello. There are 2 servers located in different data centers. It is necessary to make a cluster of 2 servers for a high availability website. If Keepalived for this solution? Or it works if both servers in the same datacenter?
4
answers

How to implement auto-transition in the fall of the VPS server?

The question is simple but did not meet the recipes - and what to do if suddenly dropped (or blocked) VPS Well, maybe the same is going to happen, forgot to pay, or evil zoster turn off your VPS - what to do, and you're warm belly of the sea? There are in nature any thing like this or a similar case. Thank you
lila.Ankunding asked April 4th 20 at 13:24
2
answers

How to reduce timeout when migrating a VM in a Proxmox cluster when a node failure?

Good day Trying to prepare for the move of some services a cluster of 3 node-based Proxmox and GlusterFS cluster for testing new path enabled HA on the proks, migration occurs. But the problem lies elsewhere, if it loses connection to Noda quite a long time to wait for the cluster will take the nod for sure outside and star...
Gerry.McClu asked April 4th 20 at 12:57
1
answer

How to make failover a web application (website, database), without BGP?

How to make failover a web application (website, database), without BGP? As to be safe from falls? Understand what protect yourself 100% impossible. I need maximum time of availability. What hosters to choose? On what characteristics to look at? Whether in different countries? How to make everything? DATABASE WEBSITE?
Ernestine_Luettg asked April 3rd 20 at 18:26
3
answers

How to implement scalability and fault tolerance of MySQL database?

Writing a project in PHP. As a DBMS selected MySQL. As many users, and high availability of service will not prevent want to ask you how to do DB failover and productive at the same time. There are 2 more or less powerful dedicated server. In this case, to arrange the most affordable and productive solution? Need data relev...
matilde_Blanda asked April 3rd 20 at 17:44
1
answer

How to provide fault tolerance web service and ipsec vpn?

For the first time faced with the task to provide fault tolerance for web services running inside the ipsec vpn. The specifics are not important, it is a common understanding of the solution or technology to further the problem statement performers. Simplifying the diagram, there are 2 servers in different data Centers, the...
Candido asked April 2nd 20 at 16:14