Difference between revisions of "2 Server Redundant Solution"
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[[Image: | [[Image:2_redundant_with_linuxha.jpg]] | ||
* Both servers (S1 and S2) are identical. | * Both servers (S1 and S2) are identical. | ||
* Both of them have two network interfaces - one for | * Both of them have two network interfaces - one for [http://en.wikipedia.org/wiki/Virtual_IP_address Virtual IP] which is visible from outside, and one for local IP for interconnection (heartbeat monitoring, MySQL Replication) | ||
* DB are synchronized over MySQL Replication | * DB are synchronized over MySQL Replication | ||
* LinuxHA heartbeat monitors servers, e.g. | * LinuxHA heartbeat monitors servers, e.g. | ||
** When S1 fails - S2 sees that and after 10s (default) will take | ** When S1 fails - S2 sees that and after 10s (default) will take Virtual IP, e.g. will start to serve calls, it is done automatically | ||
** When S1 is back up - S2 returns | ** When S1 is back up - S2 returns Virtual IP to S1 and system starts to function in normal work flow (done automatically). | ||
* '''VPN''' is necessary between servers if they are not on the same LAN | * '''VPN''' is necessary between servers if they are not on the same LAN | ||
Revision as of 08:09, 25 October 2010
- Both servers (S1 and S2) are identical.
- Both of them have two network interfaces - one for Virtual IP which is visible from outside, and one for local IP for interconnection (heartbeat monitoring, MySQL Replication)
- DB are synchronized over MySQL Replication
- LinuxHA heartbeat monitors servers, e.g.
- When S1 fails - S2 sees that and after 10s (default) will take Virtual IP, e.g. will start to serve calls, it is done automatically
- When S1 is back up - S2 returns Virtual IP to S1 and system starts to function in normal work flow (done automatically).
- VPN is necessary between servers if they are not on the same LAN
