High Availability

ha-diagram-animated

Or

ha


References

Digital Ocean

https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-setup-with-heartbeat-and-floating-ips-on-ubuntu-14-04
https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-setup-with-pacemaker-corosync-and-floating-ips-on-centos-7
https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-setup-with-corosync-pacemaker-and-floating-ips-on-ubuntu-14-04
https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-haproxy-setup-with-corosync-pacemaker-and-floating-ips-on-ubuntu-14-04

Data Replication

https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-on-centos-7
https://www.digitalocean.com/community/tutorials/how-to-install-mongodb-on-centos-7
https://www.digitalocean.com/community/tutorials/how-to-set-up-master-slave-replication-on-postgresql-on-an-ubuntu-12-04-vps
https://www.digitalocean.com/community/tutorials/how-to-implement-replication-sets-in-mongodb-on-an-ubuntu-vps

Pacemaker, Corosync and PostgreSQL | MongoDB

https://wiki.clusterlabs.org/wiki/PgSQL_Replicated_Cluster
http://linux-ha.org/doc/man-pages/re-ra-pgsql.html
https://dalibo.github.io/PAF/Quick_Start-CentOS-7.html
https://github.com/ChenHuajun/pha4pgsql
https://docs.mongodb.com/manual/tutorial/deploy-replica-set/
https://docs.mongodb.com/mongoid/master/#ruby-mongoid-tutorial

HowtoForge

https://www.howtoforge.com/high-availability-load-balancer-haproxy-heartbeat-debian-etch
https://www.howtoforge.com/how-to-set-up-an-active-passive-postgresql-cluster-with-pacemaker-corosync-and-drbd-centos-5.5
https://www.howtoforge.com/tutorial/how-to-set-up-nginx-high-availability-with-pacemaker-corosync-and-crmsh-on-ubuntu-1604/
https://www.howtoforge.com/tutorial/how-to-setup-haproxy-as-load-balancer-for-nginx-on-centos-7/

Tecmint

https://www.tecmint.com/add-new-disk-to-an-existing-linux/

Learn IT Guide

http://www.learnitguide.net/2016/07/how-to-install-and-configure-drbd-on-linux.html

IT’zGeek

http://www.itzgeek.com/how-tos/linux/centos-how-tos/configure-high-avaliablity-cluster-on-centos-7-rhel-7.html

UpCloud

https://www.upcloud.com/support/how-to-configure-floating-ip-on-centos/

Blog

http://jensd.be/156/linux/building-a-high-available-failover-cluster-with-pacemaker-corosync-pcs

Rancher

http://rancher.com/docs/rancher/v1.6/en/installing-rancher/installing-server/#multi-nodes
http://rancher.com/docs/rancher/v1.6/en/cattle/adding-load-balancers/

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