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Full Discussion: Lsyncd Configuration
Top Forums UNIX for Beginners Questions & Answers Lsyncd Configuration Post 303038617 by Neo on Sunday 8th of September 2019 12:44:29 AM
Old 09-08-2019
Quote:
Originally Posted by arun_adm

Thanks Neo for your reply.

Could you please share the rsync and cron setup you used in your usecase? I can give a try with that.

Here is the rsync command which i used to run manually to sync the data.

Code:
nohup /usr/bin/time --format='Elapsed Time = %e seconds' rsync -avh --exclude="lost+found" --exclude=".snapshot" --info=progress2 --stats /src/data/01/* /tgt/data/01/ > /root/rs-logs/data_01-`date +%Y%m%d-%H%M`.log &

I have my rsync command(s) in a crontab script(s), like so, for example:

Code:
30 23 * * * /usr/bin/nice -n 19 /usr/local/bin/sync_dumps > /dev/null 2>&1

... where my script sync_dumps contains an rsync command set up for my particular case.

If the files have not changed, rsync will log and exit, of course.

This is a classic "polling" versus "pushing" problem, and I prefer to keep this simple with rsync and cron. The frequency of my backups is based on my risk model and my risk model for this instance says that backing up to a remote server once a day is fine. Your risk model may be different and requires a different backup frequency.

FWIW, I never (rarely, is a better word, I guess) use additional processes to perform tasks which I can perform in a more simpler way, so I use rsync and not lsyncd, but that's just me. I like simple. It's easily to maintain, update and troubleshoot if there are problems (or port to a new server when a datacenter change is required).
 

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LEARN ABOUT CENTOS

ocf_heartbeat_rsyncd

OCF_HEARTBEAT_RSYNCD(7) 					OCF resource agents					   OCF_HEARTBEAT_RSYNCD(7)

NAME

       ocf_heartbeat_rsyncd - Manages an rsync daemon

SYNOPSIS

       rsyncd [start | stop | monitor | meta-data | validate-all]

DESCRIPTION

       This script manages rsync daemon

SUPPORTED PARAMETERS

       binpath
	   The rsync binary path. For example, "/usr/bin/rsync"

	   (optional, string, default "rsync")

       conffile
	   The rsync daemon configuration file name with full path. For example, "/etc/rsyncd.conf"

	   (optional, string, default "/etc/rsyncd.conf")

       bwlimit
	   This option allows you to specify a maximum transfer rate in kilobytes per second. This option is most effective when using rsync with
	   large files (several megabytes and up). Due to the nature of rsync transfers, blocks of data are sent, then if rsync determines the
	   transfer was too fast, it will wait before sending the next data block. The result is an average transfer rate equaling the specified
	   limit. A value of zero specifies no limit.

	   (optional, string, no default)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
	   Starts the resource. Suggested minimum timeout: 20s.

       stop
	   Stops the resource. Suggested minimum timeout: 20s.

       monitor
	   Performs a detailed status check. Suggested minimum timeout: 20s. Suggested interval: 60s.

       validate-all
	   Performs a validation of the resource configuration. Suggested minimum timeout: 20s.

       meta-data
	   Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

EXAMPLE

       The following is an example configuration for a rsyncd resource using the crm(8) shell:

	   primitive p_rsyncd ocf:heartbeat:rsyncd 
	     op monitor depth="0" timeout="20s" interval="60s"

SEE ALSO

       http://www.linux-ha.org/wiki/rsyncd_(resource_agent)

AUTHOR

       Linux-HA contributors (see the resource agent source for information about individual authors)

resource-agents UNKNOWN 					    06/09/2014						   OCF_HEARTBEAT_RSYNCD(7)
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