Memcache \OC\Memcache\APCu not available for local cache

[ozinfotech]

Steps to reproduce

1. Open PuTTY and log in to Nextcloud
2. Update the VM with the script: sudo bash /var/scripts/menu.sh
3. Attempt a minor release update

Expected behavior

The update usually completes without any hiccups.

Actual behavior

The script errors out with the following message:

An unhandled exception has been thrown:
OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)

Server configuration

Nextcloud server version: 21.0.2

Server OS 20.04.2 LTS

PHP Version 7.4

How did you install the VM? (Scripted install from master OR Released version)
Purchased from TechAndMe.se

Network

Do you use DHCP?
No

Is port 80 and/or 443 open?
Yes to both

Logs / Screenshots

Log file (/var/log/nextcloud/nextcloud.log)

{"reqId":"HlrzHllugT6koEfqzcoJ","level":2,"time":"2021-06-23T18:55:02-05:00","remoteAddr":"","user":"--","app":"OC\\Log\\Rotate","method":">
{"reqId":"wxFT1zguKoQ62axvDr3R","level":3,"time":"2021-06-23T19:02:40-05:00","remoteAddr":"213.70.130.70","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"WLafzNgke46jPytF22Zl","level":3,"time":"2021-06-29T14:11:28-05:00","remoteAddr":"213.70.126.219","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"muUEtUp6kTGOsc4fZQBk","level":2,"time":"2021-06-30T10:47:23-05:00","remoteAddr":"213.69.71.49","user":"0269457C-E7F6-432A-A0A5-18>
{"reqId":"E1pzMrN6IQocSuucHLEo","level":3,"time":"2021-06-30T12:24:46-05:00","remoteAddr":"162.41.74.90","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"FUU64O3lpfJ6QsJt3c0p","level":3,"time":"2021-06-30T12:28:44-05:00","remoteAddr":"162.41.74.210","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"yJ2GE2yyty89OcHT3IpN","level":3,"time":"2021-06-30T12:30:10-05:00","remoteAddr":"213.70.126.133","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"wPYWNP84goMQB4hZeefX","level":3,"time":"2021-06-30T12:32:11-05:00","remoteAddr":"162.41.75.13","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"zHtmkGciPWreMvzUEvBZ","level":3,"time":"2021-06-30T12:34:00-05:00","remoteAddr":"162.41.75.27","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"qQXOkOJ9NgE12hfIG7BW","level":3,"time":"2021-06-30T12:37:11-05:00","remoteAddr":"162.41.74.176","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"ejPCzT6FTe9FwdfgaINg","level":3,"time":"2021-06-30T12:42:54-05:00","remoteAddr":"162.41.75.21","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"BwApm6zeDhhlx3Cy1q4O","level":3,"time":"2021-06-30T12:44:11-05:00","remoteAddr":"162.41.74.134","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"BlQPqfAk1ZMqmLklzvNy","level":3,"time":"2021-06-30T12:48:38-05:00","remoteAddr":"108.162.216.229","user":"6DE4C6DA-602E-486D-8389>
{"reqId":"cv7IlHNjmeMN1qdNPIzj","level":3,"time":"2021-06-30T12:51:29-05:00","remoteAddr":"162.41.74.200","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"e5eRxC38LVGwT4TuoHGR","level":3,"time":"2021-06-30T12:53:42-05:00","remoteAddr":"162.41.74.190","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"6U0DM3UkUSKRVcqgWvEO","level":3,"time":"2021-06-30T12:55:35-05:00","remoteAddr":"162.41.74.240","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"7bbK1BAu3UnYZSqOStt9","level":3,"time":"2021-06-30T12:57:40-05:00","remoteAddr":"162.41.74.190","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"X42b6PBu3CwnTfX54oUy","level":3,"time":"2021-06-30T12:59:32-05:00","remoteAddr":"162.41.74.102","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"vpbggeo5EQuSQocnwgxL","level":3,"time":"2021-06-30T13:01:27-05:00","remoteAddr":"162.41.74.140","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"RZBHnDmSOdZykEVgWVQx","level":3,"time":"2021-06-30T13:03:27-05:00","remoteAddr":"162.41.74.190","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"4tfmHrwDpviuenXBdkTn","level":3,"time":"2021-06-30T13:05:25-05:00","remoteAddr":"162.41.75.35","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"aomEBlZS4tgkhuyvaZhQ","level":3,"time":"2021-06-30T13:07:16-05:00","remoteAddr":"162.41.75.29","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"sCNncJocMkla7r1Dxnkp","level":3,"time":"2021-06-30T13:09:31-05:00","remoteAddr":"108.162.216.241","user":"6DE4C6DA-602E-486D-8389>
{"reqId":"VsxdwRlCL5WNliuVkS1R","level":3,"time":"2021-06-30T13:11:31-05:00","remoteAddr":"162.41.74.130","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"OZxHnRKylZkl5jb1tebN","level":3,"time":"2021-06-30T13:13:44-05:00","remoteAddr":"162.41.74.102","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"pvvzmshhcHAOBNriZglv","level":3,"time":"2021-06-30T13:16:12-05:00","remoteAddr":"162.41.74.234","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"bPl3R1d6fUJl4m4VCPqc","level":3,"time":"2021-06-30T13:17:59-05:00","remoteAddr":"162.41.74.200","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"Nwa7rz0a4Nixp7tBb6aR","level":3,"time":"2021-06-30T13:20:14-05:00","remoteAddr":"162.41.74.206","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"bBFZdU5uKNqRXnJMFyQ1","level":3,"time":"2021-06-30T13:21:47-05:00","remoteAddr":"162.41.74.234","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"IRlX5vjZR9G75yshoduQ","level":3,"time":"2021-06-30T13:23:26-05:00","remoteAddr":"162.41.74.220","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"uAX3kI89UCw88HxJWHUI","level":3,"time":"2021-06-30T13:25:04-05:00","remoteAddr":"162.41.74.106","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"aLFO68s2KtHxzGxzPiD6","level":3,"time":"2021-06-30T13:31:36-05:00","remoteAddr":"162.41.75.29","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"p7RQU8qCFdhfk24TGfB6","level":3,"time":"2021-06-30T13:34:59-05:00","remoteAddr":"162.41.75.11","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"qmdQcWjNf3912GVNMjmn","level":3,"time":"2021-06-30T13:36:50-05:00","remoteAddr":"108.162.216.235","user":"6DE4C6DA-602E-486D-8389>
{"reqId":"l3YGmJRSIoAJxjg6xKHu","level":3,"time":"2021-06-30T13:38:23-05:00","remoteAddr":"162.41.74.216","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"ysrmIqNRmbouAPzuWQQA","level":3,"time":"2021-06-30T13:40:05-05:00","remoteAddr":"162.41.74.160","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"b6sxNXBg3bwfculFrzYj","level":3,"time":"2021-06-30T13:41:53-05:00","remoteAddr":"162.41.74.102","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"EHJhBN0Q52O3bb5qMe0y","level":3,"time":"2021-06-30T13:43:14-05:00","remoteAddr":"162.41.74.212","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"IG0owdOxUCYcpStDVsX0","level":3,"time":"2021-06-30T13:44:54-05:00","remoteAddr":"162.41.74.105","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"mMJg2u0RzpJsmJNO4Wbr","level":3,"time":"2021-06-30T14:06:04-05:00","remoteAddr":"162.41.74.170","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"YC8hFUL5vmLFOMAA8qOF","level":3,"time":"2021-06-30T14:19:17-05:00","remoteAddr":"213.70.127.14","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"D2WKTAIjpEYTHTs8j1fr","level":3,"time":"2021-06-30T14:23:33-05:00","remoteAddr":"213.70.126.63","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"2XNDfRVtKZMAL3upBz8n","level":3,"time":"2021-06-30T14:31:31-05:00","remoteAddr":"213.70.126.35","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"IN4J1U4FmuwI3kEexym8","level":3,"time":"2021-06-30T15:17:51-05:00","remoteAddr":"213.70.126.99","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"Zpx6iPvILQfPPXBUOX3K","level":3,"time":"2021-06-30T15:25:40-05:00","remoteAddr":"213.70.126.51","user":"6DE4C6DA-602E-486D-8389-A>
{"reqId":"Oz6ckYdKGtPpfVtvGFJO","level":3,"time":"2021-06-30T15:31:49-05:00","remoteAddr":"213.70.126.189","user":"6DE4C6DA-602E-486D-8389->
{"reqId":"OxN6jeU6WHZc3KdGaNac","level":2,"time":"2021-07-01T09:52:05-05:00","remoteAddr":"213.69.68.21","user":"--","app":"no app in cont>
{"reqId":"fSrQgt5LNamHkN9rGYSE","level":2,"time":"2021-07-01T09:52:13-05:00","remoteAddr":"213.69.68.21","user":"--","app":"no app in cont>
{"reqId":"3DhBcyhtvnTNp5UglLBA","level":2,"time":"2021-07-01T09:52:37-05:00","remoteAddr":"213.69.68.21","user":"--","app":"no app in cont>

Installation log (command output)

All files are backed up.
Maintenance mode enabled
Removing old Nextcloud instance in 5 seconds...
Extracting new package....
Restoring config to Nextcloud...
[⣾⣽⣻⣾⣽⣻Setting secure permissions...
Creating possible missing Directories
chmod Files and Directories
chown Directories
⣾⣽⣻⣾⣽⣻chmod/chown .htaccess
]
An unhandled exception has been thrown:
OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)
Sorry but something went wrong. Please report this issue to https://github.com/nextcloud/vm/issues and include the output of the error message. Thank you!
sudo -u www-data php /var/www/nextcloud/occ maintenance:mode --off failed

[ozinfotech]

For the fun of it, I restored from backup and then ran this command sudo apt-get install php-apcu before I started the script. It still gave me the same error message as shown in the command output above. It was worth a shot.

Restoring from backup once more.

[szaimen]

@enoch85 I thought we fixed this already in

vm/nextcloud_update.sh

Lines 375 to 400 in 0ce7f6a

	if pecl list | grep -q apcu
	then
	yes no | pecl upgrade apcu
	# Remove old igbinary
	if grep -qFx extension=apcu.so "$PHP_INI"
	then
	sed -i "/extension=apcu.so/d" "$PHP_INI"
	fi
	# Check if apcu is enabled and create the file if not
	if [ ! -f $PHP_MODS_DIR/apcu.ini ]
	then
	touch $PHP_MODS_DIR/apcu.ini
	fi
	# Enable new apcu
	if ! grep -qFx extension=apcu.so $PHP_MODS_DIR/apcu.ini
	then
	echo "# PECL apcu" > $PHP_MODS_DIR/apcu.ini
	echo "extension=apcu.so" >> $PHP_MODS_DIR/apcu.ini
	check_command phpenmod -v ALL apcu
	fi
	# Fix https://help.nextcloud.com/t/nc-21-manual-update-issues/108693/4?$
	if ! grep -qFx apc.enable_cli=1 $PHP_MODS_DIR/apcu.ini
	then
	echo "apc.enable_cli=1" >> $PHP_MODS_DIR/apcu.ini
	check_command phpenmod -v ALL apcu
	fi

or is this maybe an older installation that doesn't have apcu installed via pecl?

[szaimen]

@ozinfotech could you please post your config.php file here and the output of the three commands sudo php -m and sudo apt list --installed | grep php and sudo pecl list? Thanks!

[enoch85]

I got the same error yesterday, so there's something off with APCu... I don't know if it's Nextcloud or if it's APCu itself.

Workaround: change to Redis for local cache in config.php.

[enoch85]

Made this commit for now: 2378716

[szaimen]

I am not sure what this shall solve?

[szaimen]

The reason for the issue is probably nextcloud/server#25770 but I don't know how to solve it.

[szaimen]

Honestly it looks like those lines should fix it

vm/nextcloud_update.sh

Lines 395 to 400 in 0ce7f6a

	# Fix https://help.nextcloud.com/t/nc-21-manual-update-issues/108693/4?$
	if ! grep -qFx apc.enable_cli=1 $PHP_MODS_DIR/apcu.ini
	then
	echo "apc.enable_cli=1" >> $PHP_MODS_DIR/apcu.ini
	check_command phpenmod -v ALL apcu
	fi

but you've just disabled them.

[enoch85]

OK, so we should revert to Redis for cache: nextcloud/server#25770 (comment)

[enoch85]

but you've just disabled them.

Just tested on an old Nextcloud installation, and as long as APCu isn't updated it still works.

[szaimen]

as long as APCu isn't updated it still works.

okay

[enoch85]

@szaimen Can you prep a PR to remove APCu in the update script, and change to Redis in config.php?

I can do it n like 30 minutes if you don't have time right now.

[szaimen]

Please do it yourself. I am busy currently.