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| cloudappliance/highavailabilitysetup [2020_02_14 15:34] – [Part III - Application Servers] dan | cloudappliance:highavailabilitysetup [2023_06_22 05:41] – external edit 127.0.0.1 | ||
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| Line 1: | Line 1: | ||
| - | ===== SME File Fabric HA Setup "2 x 2" ===== | + | ===== SME File Fabric HA Setup "2 x 2" |
| - | == last edited on Nov. 22, 2019 == | + | |
| + | == last edited on October 17, 2022 == | ||
| ==== 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, | 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, | ||
| - | SME designs, implements and supports HA File Fabric solutions for customers on a paid professional services basis. | + | SME designs, implements and supports HA (High Availability) |
| ==== Introduction ==== | ==== Introduction ==== | ||
| Line 74: | Line 75: | ||
| # systemctl stop httpd | # systemctl stop httpd | ||
| # systemctl stop cloudftp | # systemctl stop cloudftp | ||
| - | # systemctl stop crond | ||
| # systemctl stop vsftpd | # systemctl stop vsftpd | ||
| </ | </ | ||
| + | <WRAP center round info 100%> | ||
| + | Please note this information above was updated with the 2106 release of the File Fabric. Please see this [[: | ||
| + | </ | ||
| ==== Part II - Database Servers ==== | ==== Part II - Database Servers ==== | ||
| Line 104: | Line 106: | ||
| </ | </ | ||
| - | Place a "#" | + | Place a "#" |
| - | {{::407ae286-9576-4a13-97bb-e2f0489a2a17.png? | + | ``` |
| + | MAILTO='' | ||
| + | #Ansible: | ||
| + | #* * * * * / | ||
| + | #Ansible: #3 | ||
| + | #5 4 * * * / | ||
| + | #Ansible: #2 | ||
| + | #* * * * * / | ||
| + | #Ansible: #5 | ||
| + | #10 2 1 * * / | ||
| + | #Ansible: #4 | ||
| + | #5 * * * * / | ||
| + | #Ansible: #7 | ||
| + | 30 1 * * * / | ||
| + | #Ansible: #6 | ||
| + | #10 * * * * / | ||
| + | * * * * * / | ||
| + | ``` | ||
| + | |||
| + | <WRAP center round info 100%> | ||
| + | Please note this information above was updated with the 2106 release of the File Fabric. Please see this [[: | ||
| + | </ | ||
| + | |||
| + | <WRAP center round important 100%> | ||
| + | There must always be exactly one cron node per File Fabric cluster. If the node that was acting as the cron node ceases to be available as part of the cluster, another node must be made the cron node. | ||
| + | </ | ||
| === iptables for dbservers === | === iptables for dbservers === | ||
| Line 142: | Line 169: | ||
| By default, the appliance memcached service listens only for connections from localhost, in order to share a memcache between the two application servers, we must change that. For redundancy we will do this on both smesql01 and smesql02. | By default, the appliance memcached service listens only for connections from localhost, in order to share a memcache between the two application servers, we must change that. For redundancy we will do this on both smesql01 and smesql02. | ||
| - | To allow other machines to connect, edit /etc/sysconfig/memcached. | + | < |
| - | < | + | cd /var/www/ |
| + | sed -i 's/127.0.0.1/0.0.0.0/g' .env | ||
| + | docker-compose down | ||
| + | docker-compose up -d | ||
| + | </ | ||
| - | Change the line | + | === Redis configuration === |
| - | OPTIONS="-l 127.0.0.1" | + | By default, the appliance Redis service listens only for connections from localhost, in order to share a Redis between the two application servers, we must change that. For redundancy we will do this on both smesql01 and smesql02. |
| - | to | + | < |
| - | + | cd / | |
| - | OPTIONS=" | + | sed -i ' |
| - | + | docker-compose down | |
| - | Making the file look like this | + | docker-compose up -d |
| - | + | </ | |
| - | {{:: | + | |
| - | + | ||
| - | then restart the memcached service | + | |
| - | < | + | |
| === MySQL configuration for HA === | === MySQL configuration for HA === | ||
| Line 288: | Line 315: | ||
| Using database replication allows you to quickly continue service if a database goes down. | Using database replication allows you to quickly continue service if a database goes down. | ||
| + | <WRAP center round tip 100%> | ||
| + | See [[cloudappliance: | ||
| + | </ | ||
| In MySQL replication, | In MySQL replication, | ||
| Line 435: | Line 465: | ||
| In addition add a newline to define a remote memcached instance | In addition add a newline to define a remote memcached instance | ||
| < | < | ||
| + | |||
| + | In addition ensure the following variable is set for Redis: | ||
| + | < | ||
| Further we need to update the $dbuser and $password to match the < | Further we need to update the $dbuser and $password to match the < | ||
| Line 457: | Line 490: | ||
| == memcached == | == memcached == | ||
| < | < | ||
| - | # systemctl disable | + | cd / |
| - | # systemctl stop memcached | + | docker-compose down |
| </ | </ | ||
| == crontab == | == crontab == | ||
| - | All of smestorage' | + | The majority |
| **As root on smeweb02 only:** | **As root on smeweb02 only:** | ||
| < | < | ||
| Line 468: | Line 501: | ||
| </ | </ | ||
| - | Place a # in front of six of the seven jobs listed in the crontab | + | Your crontab |
| + | |||
| + | ``` | ||
| + | MAILTO='' | ||
| + | #Ansible: | ||
| + | #* * * * * / | ||
| + | #Ansible: #3 | ||
| + | #5 4 * * * / | ||
| + | #Ansible: #2 | ||
| + | #* * * * * / | ||
| + | #Ansible: #5 | ||
| + | #10 2 1 * * / | ||
| + | #Ansible: #4 | ||
| + | #5 * * * * / | ||
| + | #Ansible: #7 | ||
| + | 30 1 * * * / | ||
| + | #Ansible: #6 | ||
| + | #10 * * * * / | ||
| + | * * * * * / | ||
| + | ``` | ||
| + | |||
| + | <WRAP center round info 100%> | ||
| + | Please note this information | ||
| + | </ | ||
| Restart both servers, so on both smeweb01 and smeweb02, execute a reboot. | Restart both servers, so on both smeweb01 and smeweb02, execute a reboot. | ||