When you encounter the error message "No space left on device (os error 28)," it is indicating that there is not enough space available in the /tmp directory. Selenium utilizes the /tmp directory for creating temporary profiles during test runs, as evidenced by the error message "(os error 28) at path "/tmp/rust_mozprofileO0WZJN".
To address this issue, execute the command df -h to assess the disk usage of your file systems and specifically examine the utilization of the /tmp directory. If space is indeed limited, attempt to free up some storage capacity.
An alternative solution involves configuring Selenium to utilize a different path, particularly if you are using a Firefox browser. The following instructions depict how to achieve this with Chrome and Firefox using Java or Python:
Chrome - Java
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
public class Main {
public static void main(String[] args) {
ChromeOptions options = new ChromeOptions();
options.addArguments("user-data-dir=/path/to/your/directory");
ChromeDriver driver = new ChromeDriver(options);
}
}
Chrome - Python
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.add_argument("user-data-dir=/path/to/your/directory")
driver = webdriver.Chrome(options=options)
Firefox - Java
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxOptions;
public class Main {
public static void main(String[] args) {
FirefoxOptions options = new FirefoxOptions();
options.addPreference("browser.download.dir", "/path/to/your/directory");
FirefoxDriver driver = new FirefoxDriver(options);
}
}
Firefox - Python
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.profile = "/path/to/your/directory"
driver = webdriver.Firefox(options=options)
Implementing the above guidelines will guide Selenium to store its temporary profiles in the designated path rather than in /tmp.
N.B.
Ensure that the specified directory exists and that Selenium possesses sufficient permissions to write to it.