Old boy Education Daily-March 20, 2017: Use the rsync daemon mode, often the exception description, and explain how to resolve

The Rsync Service FAQ Summary explains:

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• Iptables firewall enabled by Rsync server

client-side error behavior: No Route to host

[Email protected]]# rsync-avz/etc/hosts [email protected]::backup rsync:failed to connect to 172.16.1.41:no route to Host (113) Rsyncerror:error in socket IO (code ten) at CLIENTSERVER.C (124) [sender=3.0.6]

exception Problem Resolution:

Turn off The Firewall service on the rsync server (iptables)

[[email protected] mnt]#/etc/init.d/iptables stop iptables:setting chains to Policy accept:filter [OK] I                              ptables:flushing firewall rules: [OK] iptables:unloading modules:  [OK] [Email protected] mnt]#/etc/init.d/iptables status Iptables:firewall is not running.

• Rsync Client performs rsync command error:

client-side error behavior:

[Email protected] tmp]# rsync-avz/etc/hosts [email protected]::/backuperror:theremote path must start with a module NA Me not A/rsyncerror:error starting Client-server Protocol (code 5) at MAIN.C (1503) [sender=3.0.6]

exception Problem Resolution:

The rsync command syntax understands the error::/backup is the wrong syntax and should be :: Backup (rsync module )

• @ERROR: Auth failed on module Oldboy

client-side error behavior:

[Email protected] tmp]# rsync-avz/etc/hosts [email protected]::backuppassword: @ERROR: Auth failed on module Backuprsync Error:error starting Client-server Protocol (code 5) at MAIN.C (1503) [sender=3.0.6]

exception Problem Resolution:

1. password really input error, user name is really wrong

2.secrets file =/etc/rsync.password The specified password and actual password file names are inconsistent

3./etc/rsync.password file permissions are not 600

4.rsync_backup:123456 Password Profile Note that there are no spaces behind it

5.rsync Client password file only enter the password information, do not enter the virtual authentication user name

• Unknown module ' backup '

[[email protected] tmp]# rsync-avz/etc/[email protected]::backup@error:unknown module ' backup ' rsync error:error starti NG Client-server Protocol (code 5) at MAIN.C (1503) [sender=3.0.6]

exception Problem Resolution:

1./etc/rsyncd.conf configuration file Module name writing error

• Permission denied

[Email protected] tmp]# rsync-avz/etc/[email protected]::backuppassword:sending incremental file Listhostsrsync: Mkstemp ". Hosts.5z3aoa" (inbackup) Failed:permission denied (all sent 196 bytes received) bytes 63.71 bytes/sectotal s Ize is 349 speedup are 1.57rsync error:some files/attrs were not transferred (see previous errors) (code) at MAIN.C (1039 ) [sender=3.0.6]

exception Problem Resolution:

1. the owner and owner group of the shared directory is incorrect, not rsync

2. the permissions of the shared directory are incorrect, not 755

• ChDir failed

[Email protected] tmp]# rsync-avz/etc/[email Protected]::backuppassword: @ERROR: chdir failedrsync error:error Startin G Client-server Protocol (code 5) at MAIN.C (1503) [sender=3.0.6]

exception Problem Resolution:

1. Backup Storage directory not established

2. inconsistent backup storage directory and configuration file definitions established

[[email protected]]# /etc/init.d/xinetd restartshell-init: error retrieving  current directory:getcwd: cannot access parent directories: no such  file or directorystopping xinetd:                                            [  OK   ]STARTING XINETD: SHELL-INIT: ERROR RETRIEVINGCURRENT DIRECTORY: GETCWD:  cannot access parent directories: No such file ordirectory                                                             [  ok   ]

Description: If there is no backup storage directory, thexinetd service will not start correctly

• Invalid UID rsync

[Email protected] tmp]# rsync-avz/etc/[email Protected]::backuppassword: @ERROR: Invalid UID rsyncrsync error:error STA Rting Client-server Protocol (code 5) at MAIN.C (1503) [sender=3.0.6]

exception Problem Resolution:

rsync service corresponds to rsync virtual user does not exist

• The client has configured the password file, but the secret key login method, still need to enter the password

Passwordfile must not being other-accessible[[email protected] tmp]# rsync-avz/etc/[email protected]::backup--password-fi Le=/etc/rsync.passwordpassword file must not being other-accessiblecontinuing without password filepassword:sending Incremental file list sent bytes received 8 bytes 5.23 bytes/sectotal size is 349 speedup is 10.26

exception Problem Resolution:

The Rsync client's secret key file must also be a privilege

• rsync Client Connection slow problem

Error log output

2017/03/08 20:14:43 [3422] Params.c:parameter ()-ignoring badly formed line in configuration File:ignore errors

2017/03/0820:14:43 [3422] name lookup failed for 172.16.1.31:name or service not known

2017/03/08 20:14:43 [3422] Connect from UNKNOWN (172.16.1.31) 2017/03/08 20:14:43 [3422] rsync to backup/[email protected] (172.16.1.31) 2017/03/08 20:14:43 [3422] Receiving file list2017/03/08 20:14:43 [3422] sent bytes received bytes to Tal size 349

Correct log output

2017/03/08 20:16:45 [3443] Params.c:parameter ()-ignoring badly formed line in configuration File:ignore errors2017/03/08 20:16:45 [3443] Connect from NFS02 (172.16.1.31) 2017/03/08 20:16:45 [3443] rsync to backup/[email protected] (172.16.1.31 ) 2017/03/08 20:16:45 [3443] Receiving file list2017/03/08 20:16:45 [3443] Sent (bytes received) bytes Total size 349

exception Problem Resolution:

View logs for analysis

• Rsync Service does not start correctly

Connection refused (111) [[email protected] ~]# Rsync-avz/etc/[email protected]::backuprsync:failed to connect to 172.1 6.1.41:connectionrefused (111) rsync error:error in Socket IO (code) ATCLIENTSERVER.C (124) [sender=3.0.6]

fix rsync service not turned on

[[Email protected] ~]# rsync --daemon[[email protected] ~]# ss -lntup  |grep rsynctcp   LISTEN     0       5                      :::873                   :::*       users: (("rsync", 1434,5) tcp    LISTEN     0      5                       *:873                     *:*       users: (("rsync", 1434,4) [[email protected] ~]#  rsync -avz /etc/[email protected]::backuppassword:sending incremental file listhosts sent 196  bytes received 27 bytes  49.56 bytes/sectotal size is 349  speedup is 1.57

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Old boy Education Daily-March 20, 2017: Use the rsync daemon mode, often the exception description, and explain how to resolve