Replicate server for disaster recovery?

[Gojko]

Hello. Is it possible to replica the whole server?
Example:
Working server1
Backup server2

I use rsync to "/" the whole server 1 to server2
I replace hardware hdd or the whole server then i use rsync from server2 to server1 to back all files.
Is this scenario is possible?
If is not how it is possible to make replica server?

 

[cPanelLauren]

Hello,


There is a wealth of information and requests for this in the forums, some examples of that might be found in the following threads:

High availibility server setup with cPanel?

Hello there , i made a high available infrastructure i mean i have 3 web servers , 3 file server , 3 database server as backend and i have 2 HAProxy in the frontend . how can i install and use cpanel on these servers :? all databases are replicated on each other in real time i have GlusterFS...

forums.cpanel.net

How to make a second cPanel server redundancy?

Say that a user has two cpanel/whm servers. I just wanted to know about this for information reasons. Now, say that a user wants to have a second server redundancy of some of the sites on the first server in case server 1 goes down it will show server 2 instead. Will this then be the correct...

forums.cpanel.net

Redundancy with 2 cPanel servers

Hi, I have 2 servers, one is the "master" and the other is a hot stand by. I want to improve the setup. So far I'm doing the following: Initially, all accounts on the master server were copied over to the standby server. Using DNSME service for domain failover to the standby server. Static...

forums.cpanel.net

I'd also encourage you to vote on the feature requests for this here:

https://features.cpanel.net/topic/active-active-redundancy-or-high-availability

https://features.cpanel.net/topic/built-in-load-balancing-replication-high-availability

 

[Jcats]

Here is a script I wrote for a customer, happy to share, it works good but would encourage you to look it over to ensure it will work for you.

You would run this script on the Backup server which is considered the 'local' server in the script, remote server is the live server.

#!/bin/bash

# BigScoots - cpanel fail over sync



liveserver=192.168.1.196

sshport=2222



# Remove any accounts from the failover server that no longer reside on the live server.

rm -f /tmp/remoteusers.txt /tmp/localusers.txt

ssh -p "$sshport" "$liveserver" "whmapi1 listaccts" |grep user: |awk '{print $2}' >> /tmp/remoteusers.txt

whmapi1 listaccts |grep user: |awk '{print $2}' >> /tmp/localusers.txt

for i in $(grep -Fxv -f /tmp/remoteusers.txt /tmp/localusers.txt)

do

/scripts/removeacct --force "$i"

  done



rm -f /tmp/remoteusers.txt /tmp/localusers.txt

ssh -p "$sshport" "$liveserver" "whmapi1 listaccts" |grep user: |awk '{print $2}' >> /tmp/remoteusers.txt

whmapi1 listaccts |grep user: |awk '{print $2}' >> /tmp/localusers.txt



xferid=$(whmapi1 create_remote_root_transfer_session remote_server_type=cpanel host="$liveserver" port="$sshport" user=root sshkey_name=id_rsa transfer_threads=10 restore_threads=10 unrestricted_restore=1 copy_reseller_privs=0 compressed=0 unencrypted=0 low_priority=0 |grep transfer_session_id: | awk '{print $2}')



for cpuser in $(grep -Fxv -f /tmp/localusers.txt /tmp/remoteusers.txt)

do

    whmapi1 enqueue_transfer_item transfer_session_id="$xferid" module=AccountRemoteRoot user="$cpuser" localuser="$cpuser" force=1 overwrite_sameowner_dbs=1 overwrite_sameowner_dbusers=1 skiphomedir=1 skipbwdata=1

done



for cpuser in $(ssh -p "$sshport" "$liveserver" "whmapi1 listaccts" |grep user: |awk '{print $2}') ; do

    whmapi1 enqueue_transfer_item transfer_session_id="$xferid" module=AccountRemoteRoot user="$cpuser" localuser="$cpuser" force=1 overwrite_sameowner_dbs=1 overwrite_sameowner_dbusers=1 skiphomedir=1 skipbwdata=1 skipaccount=1



done



    whmapi1 start_transfer_session transfer_session_id="$xferid"



rsync -a --exclude 'virtfs' --exclude 'error_log' --exclude 'cpanelsolr' --delete -e "ssh -p "$sshport"" "$liveserver":/home/ /home/

 

[Gojko]

Hello, thanks for reply. BUT this is sync for ACCOUNTS only i need for server configuration (cPanel configuration, PHP extensions, EasyApache, DNS)?

all what i read in that forums is that no solution for config file only static files rsync and featured request that is old couple years with no progression

for accounts i have script that backup and upload to remote server, but that is >backup< and if the whole server goes down, to get back 100 accounts from backup that could be a problem and also there is a problem with cPanel configuration, when i install on new server and bring back all 100 accounts some of them still will be offline because use some PHP extension or something else from configuration, that is why i need SERVER clone not just backup accounts

any solution for this kind of scenario?

 

[cliffordphillips]

Good information to keep in mind to solved the problem.