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cloudappliance/highavailabilitysetup [2019_10_29 00:36] – stevencloudappliance:highavailabilitysetup [2021_06_18 09:22] – smeadmin
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 ===== SME File Fabric HA Setup "2 x 2" ===== ===== SME File Fabric HA Setup "2 x 2" =====
 +== last edited on Jun. 18, 2021 ==
 ==== Disclaimer ==== ==== Disclaimer ====
  
 The information in this document is provided on an as-is basis. You use it at your own risk.  We accept no responsibility for errors or omissions, nor do we have any obligation to provide support for implementing or maintaining the configuration described here.  Furthermore, we do not warrant that the design presented here is appropriate for your requirements.  The information in this document is provided on an as-is basis. You use it at your own risk.  We accept no responsibility for errors or omissions, nor do we have any obligation to provide support for implementing or maintaining the configuration described here.  Furthermore, we do not warrant that the design presented here is appropriate for your requirements. 
  
-SME designs, implements and supports HA File Fabric solutions for customers on a paid professional services basis.  For more information please contact sales@storagemadeeasy.com+SME designs, implements and supports HA (High Availability) File Fabric solutions for customers on a paid professional services basis.  For more information please contact sales@storagemadeeasy.com
  
 ==== Introduction ==== ==== Introduction ====
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 </code> </code>
  
 +<WRAP center round info 100%>
 +Please note this information above was updated with the 2106 release of the File Fabric. Please see this [[cloudappliance/high-availability-cron|guide for further information]].
 +</WRAP>
  
 +==== Part II - Database Servers ====
  
-==== Part II ==== 
 === Configuring the Database Servers === === Configuring the Database Servers ===
 +
 You must perform these steps to create a specialized database server from the standard SME appliance distribution. In this guide we also run memcached as a part of the DB server. You must perform these steps to create a specialized database server from the standard SME appliance distribution. In this guide we also run memcached as a part of the DB server.
  
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 == crontab == == crontab ==
-You must also disable some jobs in crontab, these should only run on one application server. Again, as root on smesql01 and smesql02:+You must also disable some jobs in crontab. Again, as root on smesql01 and smesql02:
 <code> <code>
 # crontab -e -u smestorage # crontab -e -u smestorage
 </code> </code>
  
-Place a "#" infront of the seven jobs listed, when you are done, it should look like this:+Place a "#" in front of the lines to mirror the output below: 
 + 
 +``` 
 +MAILTO='' 
 +#Ansible: 
 +#* * * * * /var/www/smestorage/cron/scheduler_minute.pl 
 +#Ansible: #3 
 +#5 4 * * * /var/www/smestorage/cron/scheduler_daily.pl 
 +#Ansible: #2 
 +#* * * * * /var/www/smestorage/cron/taskmanager.pl 
 +#Ansible: #5 
 +#10 2 1 * * /var/www/smestorage/cron/scheduler_monthly.pl 
 +#Ansible: #4 
 +#5 * * * * /var/www/smestorage/cron/scheduler_hour.pl 
 +#Ansible: #7 
 +30 1 * * * /var/www/smestorage/cron/logroller.pl 
 +#Ansible: #6 
 +#10 * * * * /var/www/smestorage/cron/scheduler.pl 
 +* * * * * /var/www/smestorage/cron/scheduler_syncnodes.pl 
 +```
  
-{{::407ae286-9576-4a13-97bb-e2f0489a2a17.png?400|}}+<WRAP center round info 100%> 
 +Please note this information above was updated with the 2106 release of the File Fabric. Please see this [[cloudappliance/high-availability-cron|guide for further information]]. 
 +</WRAP>
  
 === iptables for dbservers === === iptables for dbservers ===
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 <code>exit </code> <code>exit </code>
  
-==== Part III ====+==== Part III - Application Servers ==== 
 + 
 +<WRAP center round important 100%> 
 +If you will be using a load balancer to distribute traffic to your web servers, configure the load balancer to provide session stickiness. 
 +</WRAP> 
 === Configure the application servers === === Configure the application servers ===
 +
 In this section, you change the application server's configuration to the database server by editing the PHP configuration directly from command line. By default, the database host is localhost.  In this section, you change the application server's configuration to the database server by editing the PHP configuration directly from command line. By default, the database host is localhost. 
 **These steps are repeated on both smeweb01 and smeweb02.** **These steps are repeated on both smeweb01 and smeweb02.**
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 == crontab == == crontab ==
-You must also disable crontab on the smeweb02 server, crontab should only run from one application server.+The majority of smestorage's cron jobs should run on one of the application servers; only one of smestorage's cron jobs, logroller, should run on the other  application server.
 **As root on smeweb02 only:** **As root on smeweb02 only:**
 <code> <code>
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 </code> </code>
  
-Place a # in front of the seven jobs listed in the crontab schedule. For a screenshot, refer to the DB section above.+Your crontab should mirror the following: 
 + 
 +``` 
 +MAILTO='' 
 +#Ansible: 
 +#* * * * * /var/www/smestorage/cron/scheduler_minute.pl 
 +#Ansible: #3 
 +#5 4 * * * /var/www/smestorage/cron/scheduler_daily.pl 
 +#Ansible: #2 
 +#* * * * * /var/www/smestorage/cron/taskmanager.pl 
 +#Ansible: #5 
 +#10 2 1 * * /var/www/smestorage/cron/scheduler_monthly.pl 
 +#Ansible: #4 
 +#5 * * * * /var/www/smestorage/cron/scheduler_hour.pl 
 +#Ansible: #7 
 +30 1 * * * /var/www/smestorage/cron/logroller.pl 
 +#Ansible: #6 
 +#10 * * * * /var/www/smestorage/cron/scheduler.pl 
 +* * * * * /var/www/smestorage/cron/scheduler_syncnodes.pl 
 +``` 
 + 
 +<WRAP center round info 100%> 
 +Please note this information above was updated with the 2106 release of the File Fabric. Please see this [[cloudappliance/high-availability-cron|guide for further information]]. 
 +</WRAP>
  
 Restart both servers, so on both smeweb01 and smeweb02, execute a reboot. Restart both servers, so on both smeweb01 and smeweb02, execute a reboot.
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