Difference between revisions of "Adding Additional memcached Servers"
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<includeonly>===Adding Additional memcached Servers===</includeonly> | |||
Adding an additional memcached servers helps to distribute the cache and balance the load across the memcached servers. | Adding an additional memcached servers helps to distribute the cache and balance the load across the memcached servers. | ||
;To add an additional memcached server: | ;To add an additional memcached server: | ||
# Edit [[networking.properties]] on all | # Edit [[networking.properties]] on all instances. | ||
# Update the <tt>MemCachedServers</tt> entry | # Update the <tt>MemCachedServers</tt> entry | ||
# Restart all servers, following the [[Server Restart Sequence]]<br/>''Note:'' The sequence is important! | # Restart all servers, following the [[Server Restart Sequence]]<br/>''Note:'' The sequence is important! | ||
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;Example: | ;Example: | ||
There is one memcached server running on serverA (192.168.0.1) on port 11211. | There is one memcached server running on serverA (192.168.0.1) on port 11211. | ||
On each | On each instance, the <tt>networking.properties</tt> has this: | ||
{| | {| | ||
<pre> | <pre> | ||
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A second memcached server is brought up on serverB (192.168.0.2) on port 11211. | A second memcached server is brought up on serverB (192.168.0.2) on port 11211. | ||
The <tt>networking.properties</tt> file is edited on all | The <tt>networking.properties</tt> file is edited on all instances so it looks like this: | ||
{| | {| | ||
<pre> | <pre> | ||
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</pre> | </pre> | ||
|} | |} | ||
<noinclude> | |||
After following the [[Server Restart Sequence]], all | [[Category:Installation]] | ||
</noinclude> | |||
After following the [[Server Restart Sequence]], all instances are using the new, distributed cache. | |||
If a 3rd memcached server is added (192.168.0.3), the <tt>networking.properties</tt> file will look like this: | If a 3rd memcached server is added (192.168.0.3), the <tt>networking.properties</tt> file will look like this: | ||
Latest revision as of 21:41, 2 October 2013
Adding an additional memcached servers helps to distribute the cache and balance the load across the memcached servers.
- To add an additional memcached server
- Edit networking.properties on all instances.
- Update the MemCachedServers entry
- Restart all servers, following the Server Restart Sequence
Note: The sequence is important!
- Example
There is one memcached server running on serverA (192.168.0.1) on port 11211. On each instance, the networking.properties has this:
MemCachedServers=192.168.0.1:11211
A second memcached server is brought up on serverB (192.168.0.2) on port 11211. The networking.properties file is edited on all instances so it looks like this:
MemCachedServers=192.168.0.1:11211 192.168.0.2:11211
After following the Server Restart Sequence, all instances are using the new, distributed cache.
If a 3rd memcached server is added (192.168.0.3), the networking.properties file will look like this:
MemCachedServers=192.168.0.1:11211 192.168.0.2:11211 192.168.0.3:11211
Again, the Server Restart Sequence is followed to enable the new configuration.