How to verify if nginx is running or not?

Question

After running an ASP.NET vNext project on my local machine I was trying to figure out how I can run it on nginx as it looks to be a recommended choice

Following jsinh's blog, I installed it using:

sudo apt-get update
sudo apt-get install nginx -y

I was trying to understand whether it is working or not by using:

ifconfig eth0 | grep inet | awk '{ print $2}'

After running

sudo service nginx start
sudo service nginx stop

However, the output is always the same:

How to verify if nginx is running or not?

Solution 1

You could use lsof to see what application is listening on port 80:

sudo lsof -i TCP:80

Solution 2

This is probably system-dependent, but this is the simplest way I've found.

if [ -e /var/run/nginx.pid ]; then echo "nginx is running"; fi

That's the best solution for scripting.

Solution 3

If you are on mac machine and had installed nginx using

brew install nginx

then

brew services list

is the command for you. This will return a list of services installed via brew and their corresponding status.

Solution 4

The modern (systemctl) way of doing it:

systemctl is-active nginx

You can use the exit value in your shell scripts as follows:

systemctl -q is-active nginx && echo "It is active, do something"

Solution 5

service nginx status will work on a non-systemd based version.

On systemd based versions such as Ubuntu Linux 16.04 LTS and above, make use of the command below;

systemctl status nginx

View more solutions

Comments

[Lex Li]

@student that post is too old for a moving target such as ASP.NET Core, and it misses so many details.

[Zameer Ansari]

Fine, at least it gives me a starting point. If you can show any newer alternative?

[jb007]

sudo lsof -i was it for me

[user541686]

Doesn't this fail if nginx has died abruptly?

[Bob]

@Mehrdad it surely does, there is absolutely no guarantee that something will clean up this pid file, so this "solution" is definetely unreliable.

[Cole Tierney]

@Sizzling Could it be listening on a different port or not running?

[Captain Jack Sparrow]

The question is about Ubuntu, not Mac users.

[Dkyrii]

But I didn't found the same question about Mac, when I had this problem. So it can be helpful for anyone like me. Also, this question already has the answer about mac users

[Captain Jack Sparrow]

But then why do you need to answer it again, if there's already a Mac answer?

[Dkyrii]

Because that answer can't be useful for bash scripts. I noticed that my answer is one for scripting.