Mac mini on El Capitan rebooting spontaneously
Hi,
I'm using a Mac Mini as a media server etc, and it has started spontaneously rebooting. I have tried to decipher the cause via logs etc, but it seems like the last message before reboot changes. I installed El Capitan from scratch yesterday and have just noticed it is still doing it.
Hardware: 2011 Mac Mini I5, 4GB ram.
Software running on it:
Java JDK running OpenHAB
Transmission
Plex Media Server
Echobridge - An amazon echo hue bridge
This is the log around the reboot last night. Please let me know if you have any ideas, or if there is any way I can tell if it is a hardware problem?
Apr 24 01:59:00 MacOne syslogd[38]: ASL Sender Statistics
Apr 24 02:01:44 MacOne com.apple.backupd[1253]: Starting automatic backup
Apr 24 02:01:45 MacOne com.apple.backupd[1253]: Backing up to /dev/disk1s2: /Volumes/Time Machine/Backups.backupdb
Apr 24 02:01:45 MacOne UserEventAgent[39]: Failed to send message because the port couldn't be created.
Apr 24 02:01:46 MacOne com.apple.backupd[1253]: Will copy (152,9 MB) from Macintosh HD
Apr 24 02:01:46 MacOne com.apple.backupd[1253]: Found 189 files (152,9 MB) needing backup
Apr 24 02:01:46 MacOne com.apple.backupd[1253]: 2,54 GB required (including padding), 353,42 GB available
Apr 24 02:01:57 MacOne com.apple.backupd[1253]: Copied 170 items (150,5 MB) from volume Macintosh HD. Linked 576.
Apr 24 02:01:59 MacOne com.apple.backupd[1253]: Created new backup: 2016-04-24-020158
Apr 24 02:01:59 MacOne UserEventAgent[39]: Failed to send message because the port couldn't be created.
Apr 24 02:01:59 --- last message repeated 1 time ---
Apr 24 02:01:59 MacOne kernel[0]: hfs: mounted Recovery HD on device disk0s3
Apr 24 02:01:59 MacOne mds[56]: (Volume.Normal:2464) volume:0x7f87d109e000 ********** Bootstrapped Creating a default store:0 SpotLoc:(null) SpotVerLoc:(null) occlude:0 /Volumes/Recovery HD
Apr 24 02:01:59 MacOne fseventsd[42]: Logging disabled completely for device:1: /Volumes/Recovery HD
Apr 24 02:01:59 MacOne com.apple.backupd[1253]: Starting post-backup thinning
Apr 24 02:01:59 MacOne com.apple.backupd[1253]: No post-backup thinning needed: no expired backups exist
Apr 24 02:01:59 MacOne mdworker[1238]: (ImportBailout.Error:1325) Asked to exit for Diskarb
Apr 24 02:01:59 MacOne mdworker[1241]: (ImportBailout.Error:1325) Asked to exit for Diskarb
Apr 24 02:01:59 MacOne mdworker[1239]: (ImportBailout.Error:1325) Asked to exit for Diskarb
Apr 24 02:01:59 MacOne mdworker[1240]: (ImportBailout.Error:1325) Asked to exit for Diskarb
Apr 24 02:01:59 MacOne mdworker[1242]: (ImportBailout.Error:1325) Asked to exit for Diskarb
Apr 24 02:01:59 MacOne com.apple.backupd[1253]: Backup completed successfully.
Apr 24 02:01:59 MacOne UserEventAgent[39]: Failed to send message because the port couldn't be created.
Apr 24 02:02:00 MacOne kernel[0]: hfs: unmount initiated on Recovery HD on device disk0s3
Apr 24 02:04:08 MacOne mds[56]: (DiskStore.Normal:2382) 5004 1.000005
Apr 24 02:09:00 MacOne syslogd[38]: ASL Sender Statistics
Apr 24 02:12:00 MacOne mds[56]: (DiskStore.Normal:2382) 5005 1.000037
Apr 24 02:15:48 MacOne mds[56]: (DiskStore.Normal:2382) 5004 1.000295
Apr 24 02:19:00 MacOne syslogd[38]: ASL Sender Statistics
Apr 24 02:27:09 MacOne mds[56]: (DiskStore.Normal:2382) 5004 1.000022
Apr 24 02:29:19 MacOne syslogd[38]: ASL Sender Statistics
Apr 24 02:31:10 localhost bootlog[0]: BOOT_TIME 1461457870 0
Apr 24 02:31:11 localhost syslogd[40]: Configuration Notice:
ASL Module "com.apple.AccountPolicyHelper" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.
Apr 24 02:31:11 localhost syslogd[40]: Configuration Notice:
ASL Module "com.apple.Accounts" claims selected messages.
Those messages may not appear in standard system log files or in the ASL database.
Apr 24 02:31:11 --- last message repeated 1 time ---
Apr 24 02:31:11 localhost syslogd[40]: Configuration Notice:
ASL Module "com.apple.authd" sharing output destination "/var/log/asl" with ASL Module "com.apple.asl".
Output parameters from ASL Module "com.apple.asl" override any specified in ASL Module "com.apple.authd".
Mac mini, iOS 9.3.1