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Bug 1082496 - socket activation for rsync doesn't work
Summary: socket activation for rsync doesn't work
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: rsync
Version: 7.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Luboš Uhliarik
QA Contact: Jaroslav Aster
Jana Heves
URL:
Whiteboard:
: 1180317 (view as bug list)
Depends On:
Blocks: 1104634 1110706 1191020 1205796 1247270
TreeView+ depends on / blocked
 
Reported: 2014-03-31 07:58 UTC by Karel Srot
Modified: 2015-11-19 12:20 UTC (History)
9 users (show)

Fixed In Version: rsync-3.0.9-17.el7
Doc Type: Known Issue
Doc Text:
The rsync utility cannot be run as a socket-activated service because the rsyncd@.service file is missing from the rsync package. Consequently, the "systemctl start rsyncd.socket" command does not work. However, running rsync as a daemon by executing the "systemctl start rsyncd.service" command works as expected.
Clone Of:
Environment:
Last Closed: 2015-11-19 12:20:43 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2120 0 normal SHIPPED_LIVE rsync bug fix update 2015-11-19 10:51:36 UTC

Description Karel Srot 2014-03-31 07:58:58 UTC 
Description of problem:

rsync cannot be started via socket. This is already tracked in Fedora bug 1047236.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. disable rsyncd.service and start rsyncd.socket
2. execute rsync command
3.

Actual results:
connection refused

Expected results:
rsync works
Comment 1 Karel Srot 2014-03-31 08:00:47 UTC 
broken package: rsync-3.0.9-15.el7
Comment 3 Pavel Šimerda (pavlix) 2014-03-31 08:28:26 UTC 
Looks like we basically need the rsyncd@.service file:

diff --git a/rsyncd@.service b/rsyncd@.service
new file mode 100644
index 0000000..89f9621
--- /dev/null
+++ b/rsyncd@.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=fast remote file copy program daemon
+ConditionPathExists=/etc/rsyncd.conf
+
+[Service]
+EnvironmentFile=/etc/sysconfig/rsyncd
+ExecStart=/usr/bin/rsync --daemon --no-detach "$OPTIONS"
+StandardInput=socket
Comment 4 Aaron Howell 2014-08-11 04:28:12 UTC 
We have put this file in as a work around while waiting for this official fix:

$ cat /etc/systemd/system/rsyncd\@.service
[Unit]
Description=fast remote file copy program daemon
ConditionPathExists=/etc/rsyncd.conf

[Service]
EnvironmentFile=/etc/sysconfig/rsyncd
ExecStart=/usr/bin/rsync --daemon --no-detach "$OPTIONS"
StandardInput=socket

We noticed that the whole system started crawling to a halt after a period of time - in troubleshooting there are a lot of failed rsync processes piling up
$ systemctl 
rsyncd.0.1:873-10.1.1.1:19886.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19887.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19888.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19889.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19898.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19899.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19903.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19905.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19907.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19912.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19914.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19915.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19916.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19917.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19918.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19919.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19922.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19924.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19934.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19935.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19937.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19938.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19942.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19944.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19945.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19959.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19960.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19961.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19962.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19963.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19964.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19965.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19967.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19968.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19969.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19970.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19971.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19972.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19973.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19974.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19975.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19976.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19977.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19978.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19979.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19980.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19981.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19982.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19983.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19984.service                                    loaded failed failed    fast remote file copy program daemon
rsyncd.0.1:873-10.1.1.1:19985.service                                    loaded failed failed    fast remote file copy program daemon

This is caused by this particular host not being on the "hosts allow = " line in /etc/rsyncd.conf causing rsync to exit with a nonzero status - which systemd then marks as failed.

The fix is to either use the systemd service file to acknowledge or ignore the return status code
Acknowledge - use "SuccessExitStatus" - however I'm not sure of the return codes that are fine to use as successful exits
So I have ignored it completely which you do by prefixing the command for ExecStart with a hyphen.
ExecStart=-/usr/bin/rsync --daemon --no-detach "$OPTIONS"

If you are going to start including this file, might want to make sure it does not cause issues with the exit codes of rsync.
Comment 5 Karel Srot 2015-01-27 12:35:43 UTC 
postponing to 7.2
Comment 10 Karel Srot 2015-04-20 14:35:46 UTC 
*** Bug 1180317 has been marked as a duplicate of this bug. ***
Comment 11 Jaroslav Aster 2015-06-03 12:39:56 UTC 
Hi,

I can confirm that rsyncd\@.service suggested by Aaron works. Exactly I used this:

[Unit]
Description=fast remote file copy program daemon
ConditionPathExists=/etc/rsyncd.conf

[Service]
EnvironmentFile=/etc/sysconfig/rsyncd
ExecStart=-/usr/bin/rsync --daemon --no-detach "$OPTIONS"
StandardInput=socket

[Install]
WantedBy=multi-user.target

It is copy of rsyncd.service + StandardInput=socket and '-' before /usr/bin/rsync.
Comment 15 errata-xmlrpc 2015-11-19 12:20:43 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2120.html
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