Services

This page is discussing about tools and services that we provide and some tips you can leverage.

Linux tools

These popular system-wide linux tools are available out of the box:

btop	cmake	composer	convert	curl
dig	docker	gcc	g++	git
gpg2	gzip	htop	iftop	jq
lsof	make	mysql	nano	ncdu
node	nslookup	nvim	openssl	perl
phar	php	pipenv	psql	python
rsync	ruby	sed	sendmail	ssh
ssh-keygen	sqlite3	tar	vi	vim
wget	whois	xz	yarn	zip

info

Don't rely on their version as it's OS wide and can be changed anytime though system updates.

Cron Job

You can create cron jobs by running crontab -e from SSH. It will open vim to edit cronjob for your server.

Please note, the minimum interval for cronjob is once in every hour; lesser than that and the system will delete your cron entries automatically!

Phussion Passenger Tools

There's passenger-status and passenger-config to diagnose your app if you happen to use passenger apps.

The restart CLI tool is also to forcefully restart your currently running apps under NGINX. It's equivalent as passenger-config restart-app ~.

To check passenger apps logs, you have to check it from our UI panel.

Docker Tools

There's docker and systemctl --user when you activate docker feature via deployment system.

To manage docker apps including viewing logs, you have to check it via docker CLI tool.

This docker is run with rootless mode. Hence some features is unavailable such as limiting by CPU and RAM.

Ephemeral Ports

Most ports are blocked except ephemeral ports (32768 - 65535). You can use them for local development inside the server, including running a custom TCP listener without going though NGINX.

Please note that long-running background processes are not allowed in the server. It will be killed automatically as soon as you log-out from SSH session.

caution

DOM Cloud is a shared VM, so other people might stumble across your randomly assigned ports (incoming traffic from ports can't be divided by domain name unlike if it's going through NGINX). Never put any sensitive data if it's mean for development!

tip

To automatically run with server public IP and random ports, use syntax like this:

npm run dev -- --host $(hostname -I | cut -d " " -f1) --port $(shuf -n 1 -i 32768-65535)

Memory Sharing

Any application run through Passenger will be spawned into multiple processes. If you save data through memory (i.e. saving some data into global variables) it won't work consistently, you have to save it either in file or database.

If you want performant cache storage, look for other platform. Some of them may grant free Redis storage. Just make sure the cluster is in same region with what you use in DOM Cloud.

Managing File Storage

If you need to delete caches and other unnecessary files in one of your hosts, use ncdu. It's a disk usage analyzer available in all servers. This is a great tool to use if you run out of disk space.

Installed PHP Extensions

PHP are installed as system wide. It's installed as in these commands:

yum install {php74,php80,php81,php82}-php-{bcmath,cli,common,devel,fpm,gd,imap,intl,mbstring,mysqlnd,opcache,pdo,pecl-mongodb,pecl-redis,pecl-zip,pgsql,process,sodium,soap,xml}

Here's the list of extensions available:

bcmath	bz2	calendar	Core	ctype	curl
calendar	date	dom	exif	fileinfo	filter
gd	gettext	hash	iconv	igbinary	imap
intl	json	libxml	mbstring	mongodb	msgpack
mysqli	mysqlnd	openssl	pcntl	pcre	PDO
pdo_mysql	pdo_pgsql	Phar	pdo_sqlite	pgsql	posix
random	readline	redis	Reflection	session	shmop
SimpleXML	soap	sockets	sodium	SPL	sqlite3
standard	sysvmsg	sysvsem	sysvshm	tokenizer	xml
xmlreader	xmlwriter	xsl	Zend OPcache	zip	zlib

Custom extensions can't be installed as it's a shared hosting. However, you can download PHP yourself and attach it to Nginx via Passenger and FastCGI.