{"id":2548,"date":"2025-03-10T20:37:29","date_gmt":"2025-03-10T20:37:29","guid":{"rendered":"https:\/\/cdblog.cdstealer.com\/?p=2548"},"modified":"2025-03-22T14:51:03","modified_gmt":"2025-03-22T14:51:03","slug":"2-ups-1-server","status":"publish","type":"post","link":"https:\/\/cdblog.cdstealer.com\/?p=2548","title":{"rendered":"2 UPS 1 Server"},"content":{"rendered":"\n

So I found myself in a situation where I had to run 2 UPS's due to larger plugs not being able to fit if the adjacent socket was occupied. Obviously having 2 UPS's with the ability to control the server is a bad idea and typically the driver only accounts for one UPS at any one time.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

This takes about 5-10 mins to setup and seems to work as expected.
Both UPS's are APC, a 1050VA and a 700ES. Both are connected to the server via USB. The driver is apcupsd.<\/p>\n\n\n\n

Make sure both UPS's are powered on and connected via USB.
Make a note of the Bus \/ Device.<\/p>\n\n\n\n

# lsusb
...
Bus 001 Device 004: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 001 Device 005: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
...<\/pre>\n\n\n\n
Let's make sure udev sees them.<\/h2>\n\n\n\n
# udevadm info --attribute-walk --name=\/dev\/bus\/usb\/001\/004 | egrep 'manufacturer|product|serial'
ATTR{manufacturer}==\"APC\"
ATTR{product}==\"Back-UPS ES 700G FW:871.O3 .I USB FW:O3 \"
ATTR{serial}==\"#########1  \"
ATTRS{manufacturer}==\"Linux 6.12.17-gentoo xhci-hcd\"
ATTRS{product}==\"xHCI Host Controller\"
ATTRS{serial}==\"0000:00:14.0\"<\/pre>\n\n\n\n
# udevadm info --attribute-walk --name=\/dev\/bus\/usb\/001\/005 | egrep 'manufacturer|product|serial'
ATTR{manufacturer}==\"American Power Conversion\"
ATTR{product}==\"Back-UPS BE1050G2 FW:497200G -497300G \"
ATTR{serial}==\"##########2\"
ATTRS{manufacturer}==\"Linux 6.12.17-gentoo xhci-hcd\"
ATTRS{product}==\"xHCI Host Controller\"
ATTRS{serial}==\"0000:00:14.0\"<\/pre>\n\n\n\n
Let's create a rule.<\/p>\n\n\n\n
# vim \/etc\/udev\/rules.d\/ups.rules

# Main UPS
SUBSYSTEM==\"usb\", ATTR{manufacturer}==\"American Power Conversion\", ATTR{serial}==\"########1  \", OWNER=\"root\", SYMLINK+=\"ups-server\"
# Secondary UPS
SUBSYSTEM==\"usb\", ATTR{manufacturer}==\"APC\", ATTR{serial}==\"#######2\", OWNER=\"root\", SYMLINK+=\"ups-devices\"<\/pre>\n\n\n\n
Note: The older of the 2 had spaces at the end of the serial number, so I kept them'<\/p>\n\n\n\n
Reload Udev<\/p>\n\n\n\n
# udevadm control --reload<\/pre>\n\n\n\n
Now let's check them udev rules.<\/p>\n\n\n\n
# udevadm trigger -v -attr-match=serial=\"########1  \"
# udevadm trigger -v -attr-match=serial=\"########2\"
# ls -l \/dev

You should see:

\/dev\/ups-devices -> bus\/usb\/001\/004
\/dev\/ups-server -> bus\/usb\/001\/005<\/pre>\n\n\n\n
Install the driver.<\/h2>\n\n\n\n
# emerge -av apcupsd
# systemctl stop apcupsd
# systemctl disable apcupsd
# cd \/etc\/apcupsd\/
# mkdir apcupsd-devices
# mkdir apcupsd-server
# cp apcupsd.conf apcupsd-devices.conf apcupsd-server.conf<\/pre>\n\n\n\n
Modify as required:<\/p>\n\n\n\n
apcupsd-server.conf

UPSNAME 1050VA<\/mark>
UPSCABLE usb
UPSTYPE usb \/dev\/ups-server<\/mark>
DEVICE
POLLTIME 60
LOCKFILE \/run\/apcupsd\/
SCRIPTDIR \/etc\/apcupsd\/apcupsd-server<\/mark>
PWRFAILDIR \/etc\/apcupsd\/apcupsd-server<\/mark>
NOLOGINDIR \/etc
ONBATTERYDELAY 6
BATTERYLEVEL 5
MINUTES 3
TIMEOUT 0
ANNOY 300
ANNOYDELAY 60
NOLOGON disable
KILLDELAY 0
NETSERVER on
NISIP 127.0.0.1
NISPORT 3551
EVENTSFILE \/var\/log\/apcupsd-server.events<\/mark>
EVENTSFILEMAX 10
UPSCLASS standalone
UPSMODE disable
STATTIME 0
STATFILE \/var\/log\/apcupsd-server.status<\/mark>
LOGSTATS off
DATATIME 0<\/pre>\n\n\n\n
apcupsd-devices.conf

UPSNAME 700ES<\/mark>
UPSCABLE usb
UPSTYPE usb \/dev\/ups-devices<\/mark>
POLLTIME 60
SCRIPTDIR \/etc\/apcupsd\/apcupsd-devices<\/mark>
PWRFAILDIR \/etc\/apcupsd\/apcupsd-devices<\/mark>
ONBATTERYDELAY 6
BATTERYLEVEL -1<\/mark>
MINUTES -1<\/mark>
TIMEOUT 0<\/mark>
ANNOY 0<\/mark>
ANNOYDELAY 0
NOLOGON disable
KILLDELAY 0
NETSERVER on
NISIP 127.0.0.1
NISPORT 3552<\/mark>
EVENTSFILE \/var\/log\/apcupsd-devices.events<\/mark>
EVENTSFILEMAX 10
UPSCLASS standalone
UPSMODE disable
STATTIME 0
STATFILE \/var\/log\/apcupsd-devices.status<\/mark>
LOGSTATS off
DATATIME 0<\/pre>\n\n\n\n
There needs to be 2 versions of the daemon running on different ports. The devices config does not allow for server control. <\/p>\n\n\n\n
Copy the following scripts into the script directory specified in the configs.<\/p>\n\n\n\n
apccontrol
changeme
commfailure
commok
offbattery
onbattery
safe.apccontrol<\/pre>\n\n\n\n
Startup Daemon (systemd)<\/h2>\n\n\n\n
Copy the systemd unit file for each daemon.<\/p>\n\n\n\n
# cp \/usr\/lib\/systemd\/system\/apcupsd.service \/usr\/lib\/systemd\/system\/apcupsd-server.service

# cp \/usr\/lib\/systemd\/system\/apcupsd.service \/usr\/lib\/systemd\/system\/apcupsd-devices.service<\/pre>\n\n\n\n
Adjust each unit file accordingly:<\/p>\n\n\n\n
[Service]
ExecStart=\/sbin\/apcupsd -b -f \/etc\/apcupsd\/apcupsd-server.conf -P \/run\/apcupsd\/apcupsd-server.pid<\/pre>\n\n\n\n
[Service]
ExecStart=\/sbin\/apcupsd -b -f \/etc\/apcupsd\/apcupsd-devices.conf -P \/run\/apcupsd\/apcupsd-devices.pid<\/pre>\n\n\n\n
Enable and start the services.<\/p>\n\n\n\n
# systemctl --now enable apcupsd-server
# systemctl --now enable apcupsd-devices<\/pre>\n\n\n\n
If all went to plan, you should now see both daemons running.<\/p>\n\n\n\n
# systemctl status apcupsd-server
\u25cf apcupsd-server.service - APC UPS Monitor
Loaded: loaded (\/usr\/lib\/systemd\/system\/apcupsd-server.service; enabled; preset: disabled)
Active: active (running) since Sun 2025-03-09 20:58:55 GMT; 23h ago
Invocation: bea2f2a029de4384ba3b9fdb62dccc27
Main PID: 18929 (apcupsd)
Tasks: 3 (limit: 38270)
Memory: 2M (peak: 6.6M)
CPU: 2.669s
CGroup: \/system.slice\/apcupsd-server.service
\u2514\u250018929 \/sbin\/apcupsd -b -f \/etc\/apcupsd\/apcupsd-server.conf -P \/run\/apcupsd\/apcupsd-server.pid
Mar 09 20:58:55 hostname systemd[1]: Started APC UPS Monitor.
Mar 09 20:58:55 hostname apcupsd[18929]: apcupsd 3.14.14 (31 May 2016) gentoo startup succeeded
Mar 09 20:58:55 hostname apcupsd[18929]: NIS server startup succeeded
Mar 09 21:02:13 hostname apcupsd[18929]: Communications with UPS restored.<\/pre>\n\n\n\n
# systemctl status apcupsd-devices
\u25cf apcupsd-devices.service - APC UPS Monitor
Loaded: loaded (\/usr\/lib\/systemd\/system\/apcupsd-devices.service; enabled; preset: disabled)
Active: active (running) since Sun 2025-03-09 20:58:48 GMT; 23h ago
Invocation: 6079648a84d74eda9d48aa43e31aaf14
Main PID: 18820 (apcupsd)
Tasks: 3 (limit: 38270)
Memory: 408K (peak: 4.8M)
CPU: 2.662s
CGroup: \/system.slice\/apcupsd-devices.service
\u2514\u250018820 \/sbin\/apcupsd -b -f \/etc\/apcupsd\/apcupsd-devices.conf -P \/run\/apcupsd\/apcupsd-devices.pid
Mar 09 20:58:48 hostname systemd[1]: Started APC UPS Monitor.
Mar 09 20:58:48 hostname apcupsd[18820]: apcupsd 3.14.14 (31 May 2016) gentoo startup succeeded
Mar 09 20:58:48 hostname apcupsd[18820]: NIS server startup succeeded
Mar 09 21:02:13 hostname apcupsd[18820]: Communications with UPS restored.<\/pre>\n\n\n\n
With this setup, I get an email should there be any interruption on either UPS or when the battery requires replacing.<\/p>\n\n\n\n
Go on, give them a test and cut the power ;)<\/p>\n","protected":false},"excerpt":{"rendered":"
So I found myself in a situation where I had to run 2 UPS's due to larger plugs not being able to fit if the adjacent socket was occupied. Obviously having 2 UPS's with the ability to control the server is a bad idea and typically the driver only accounts for one UPS at any … Continue reading 2 UPS 1 Server<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[351,352,350],"class_list":["post-2548","post","type-post","status-publish","format-standard","hentry","category-gentoo","tag-apc","tag-multiple","tag-ups"],"_links":{"self":[{"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/posts\/2548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2548"}],"version-history":[{"count":8,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/posts\/2548\/revisions"}],"predecessor-version":[{"id":2568,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=\/wp\/v2\/posts\/2548\/revisions\/2568"}],"wp:attachment":[{"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cdblog.cdstealer.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}