I have a problem with snap. For example when I try to run firefox I have this error :
pc:~$ firefox
cannot open /tmp/snap-private-tmp: Permission denied
When I look the log I have :
kernel: audit: type=1400 audit: apparmor="DENIED" operation="capable" profile="/usr/lib/snapd/snap-confine" pid=16346 comm="snap-confine" capability=12 capname="net_admin"
kernel: audit: type=1400 audit: apparmor="DENIED" operation="open" profile="/usr/lib/snapd/snap-confine" name="/tmp/snap-private-tmp/" pid=16346 comm="snap-confine" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
What needs to be done to make firefox run and fix snap?
I had something similar with secrets password manager. In the end it was the ~/snap/secrets/ folder permissions (group set to rw) that needed adjusting.
Related
I am trying to install Flask on my CentOS 7.9.2009 VM running Apache HTTP Server. I've installed Python3.8 and mod_wsgi but when I attempt to start Apache I get the below Permissioned denied when loading the mod_wsgi. I've checked multiple blogs and forums and cannot find a resolution. Any idea why I am getting this error?
Error: cannot open shared object file: Permission denied
httpd: Syntax error on line 56 of /etc/httpd/conf/httpd.conf: Syntax error on line 1 of /etc/httpd/conf.modules.d/02-wsgi.conf: Cannot load /home/myuser/.local/lib/python3.8/site-packages/mod_wsgi/server/mod_wsgi-py38.cpython-38-x86_64-linux-gnu.so into server: /home/myuser/.local/lib/python3.8/site-packages/mod_wsgi/server/mod_wsgi-py38.cpython-38-x86_64-linux-gnu.so: cannot open shared object file: Permission denied
I installed python3.8 from source using ./configure --enable-optimizations --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib" but I am still getting the above permission denied error.
Below is how my app.conf file looks like and also output of mod_wsgi module-config.
app.conf:
LoadModule wsgi_module "/home/myuser/.local/lib/python3.8/site-packages/mod_wsgi/server/mod_wsgi-py38.cpython-38-x86_64-linux-gnu.so"
mod_wsgi module-config:
[myuser#mycentos conf.d]$ mod_wsgi-express module-config
LoadModule wsgi_module "/home/myuser/.local/lib/python3.8/site-packages/mod_wsgi/server/mod_wsgi-py38.cpython-38-x86_64-linux-gnu.so"
WSGIPythonHome "/usr/local"
I get the error when I try to start Apache - sudo systemctl start httpd.
The permission issue was because of SELinux enabled/enforced on my system. I reached out to one of the mod_wsgi source code authors and he pointed me to check this. For now disabling this resolved my immediate issue. If others have suggestions to resolve this without turning it off please suggest.
$ sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: enforcing
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Max kernel policy version: 31
I'm running Selenium tests for Chrome through Jenkins pipeline on CentOs machine. When ran, it gives following error -
org.openqa.selenium.WebDriverException: unknown error: Chrome failed to start: exited abnormally
[testng] (unknown error: DevToolsActivePort file doesn't exist)
[testng] (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
However if I run same tests with same command(which is used through Jenkins pipeline) from that machine locally, it succeeds.
For the same, I went through link1, link2, link3 and other answers. From those answers, only following helped -
chrome_options.add_argument('--headless')
But this run tests with chrome in headless mode which is not my intention.
In my case, having matching Chrome browser and chromedriver version did not help, also Chrome has executable permission for all.
Note: I've my CentOs machine display enabled
Could you please help to understand what is causing this failure? Also please help with what code and/or machine level changes I've to make for its success.
EDIT:
In case, this helps to get more info.
ls | grep 'chrome' under /usr/bin gave following result -
lrwxrwxrwx 1 root root 31 Jan 20 12:29 google-chrome -> /etc/alternatives/google-chrome
lrwxrwxrwx 1 root root 32 Jan 20 12:29 google-chrome-stable -> /opt/google/chrome/google-chrome
Do you run chromedriver locally on a linux machine? What version of CentOS are you using? If you haven't already you need to install the correct chromedriver for linux. As far as I know if you want to run via Jenkins you have to run in headless mode. But I may be wrong. Below is another post that can help:
Steps to Install and run headless chrome browser on centos 6.5 using chrome driver
Below are my own settings for chrome options:
options.addArguments("--headless");
options.addArguments("--disable-dev-shm-usage");
options.addArguments("--allow-insecure-localhost");
options.addArguments("--window-size=1920,1080");
options.addArguments("start-maximized");
options.addArguments("enable-automation");
options.addArguments("--disable-infobars");
options.addArguments("--disable-browser-side-navigation");
options.addArguments("--disable-gpu");
options.addArguments("--no-sandbox");
options.addArguments("--force-device-scale-factor=1");
After update of chromedriver to version 2.46 my tasts fail to initialize.
I got message like this:
Starting ChromeDriver 2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1) on port 44269
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Failed to invoke configuration method com.personal.CustomTest.initTests not created: Chrome version must be between 71 and 75
(Driver info: chromedriver=2.46.628402,platform=Windows NT 10.0.16299 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 1.58 seconds
Build info: version: '2.53.1'
It is clearly saying that my browser version is not valid. But I am using Chrome 72.0.3626.119 so it is between 71 and 75.
Selenium version is 2.53.1.
And I am running test through console command with the help of testNG.
Any idea? Every ideas that I found was about changing selenium version but I cant do it.
For me to resolve this problem :
On Windows
cd C:\Users\[myname]\AppData\Roaming\npm\node_modules\protractor
npm i webdriver-manager#latest
webdriver-manager update
webdriver-manager start &
On Cent-OS (I used Cent-OS 7.4.* and it worked fine.)
cd /usr/lib/node_modules/protractor/
sudo npm i webdriver-manager#latest
sudo webdriver-manager update
sudo webdriver-manager start &
I hope this helps you in any way.
This error message...
Starting ChromeDriver 2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1) on port 44269
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Failed to invoke configuration method com.personal.CustomTest.initTests not created: Chrome version must be between 71 and 75
...implies that the ChromeDriver v2.46 is not compatible with the Chrome Browser version which is being accessed by your program/webdriver.
Your main issue is the incompatibility between the version of the binaries you are using as follows:
You are using chromedriver=2.46
Release Notes of chromedriver=2.46 clearly mentions the following :
Supports Chrome v71-73
Though you mentioned you are using Chrome 72.0.3626.119 possibly there are multiple instances of Chrome Browser installed within your system and your program by default is accessing the Chrome Browser whose version is not between v71.x and v75.x
You are using chrome=67.0
Release Notes of ChromeDriver v2.38 clearly mentions the following :
Supports Chrome v65-67
Solution
Keep JDK upgraded to recent levels JDK 8u201.
Uninstall all the instances of Chrome Browser (you can opt to use Revo Uninstaller).
Upgrade ChromeDriver to current ChromeDriver v2.46 level.
Keep Chrome version between Chrome v71-73 levels. (as per ChromeDriver v2.46 release notes)
For me, I had to update my chrome driver in my project to match the version of Chrome on my local machine.
yarn add chromedriver#76.0.0 -D
https://www.npmjs.com/package/chromedriver
In my case I was getting the same error after my chrome was updated to version 76. Which was happening when chimp tries to use chromedriver to execute the selenium test.
DevTools listening on ws://127.0.0.1:49220/devtools/browser/e88586cb-ed67-44fc-a742-43b767e2b8f9
[chimp][helper] setupBrowserAndDDP had error
{ Error: session not created: Chrome version must be between 71 and 75
at Object.wait (C:\ACPMS\ELS_AT\node_modules\fibers\future.js:449:15)
at Object.<anonymous> (C:\ACPMS\ELS_AT\node_modules\wdio-sync\build\index.js:344:27)
at Object.<anonymous> (C:\ACPMS\ELS_AT\node_modules\chimp\dist\lib\session-manager.js:145:21)
at initBrowser (C:\ACPMS\ELS_AT\node_modules\chimp\dist\lib\chimp-helper.js:189:43)
at Object.setupBrowserAndDDP (C:\ACPMS\ELS_AT\node_modules\chimp\dist\lib\chimp-helper.js:264:7)
at Context.<anonymous> (C:\ACPMS\ELS_AT\node_modules\chimp\dist\lib\mocha\mocha-helper.js:13:15)
at C:\ACPMS\ELS_AT\node_modules\chimp\dist\lib\utils\fiberize.js:29:22
(Driver info: chromedriver=2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1),platform=Windows NT 10.0.17134 x86_64)
at new RuntimeError (C:\ACPMS\ELS_AT\node_modules\webdriverio\build\lib\utils\ErrorHandler.js:143:12)
at Request._callback (C:\ACPMS\ELS_AT\node_modules\webdriverio\build\lib\utils\RequestHandler.js:318:39)
at Request.self.callback (C:\ACPMS\ELS_AT\node_modules\request\request.js:185:22)
at emitTwo (events.js:106:13)
at Request.emit (events.js:191:7)
at Request.<anonymous> (C:\ACPMS\ELS_AT\node_modules\request\request.js:1161:10)
at emitOne (events.js:96:13)
at Request.emit (events.js:188:7)
at IncomingMessage.<anonymous>
For me it didn't work when I updated the chrome driver by npm (both globally and locally) and then I followed these steps to resolve the issue, which might give some idea on where to check in this kind a issue:
Because exception was thrown in node_modules\chimp\dist\lib\utils\fiberize.js i navigated to that file and found one level above this file node_modules\chimp\dist\lib\chromedriver.js which has the code to start chromedriver.
I added a console.log to chromedriverPath which can be seen below and re-executed the tests to get the chromedriver path in console logs.
Chromedriver.prototype.start = function(callback) {
var self = this;
var port = self.options.port;
if (this.child) {
callback();
return;
}
var chromedriverPath = chromedriver.path;
//this was added my me the see that chrome drive path
console.log("[chimp] " + chromedriverPath);
if (fs.existsSync(chromedriverPath)) {
this.child = processHelper.start(
{
bin: chromedriverPath,
prefix: "chromedriver",
args: ["--port=" + port, "--url-base=wd/hub"],
waitForMessage: /Starting ChromeDriver/,
errorMessage: /Error/
},
callback
);
} else {
callback("[chimp][chromedriver] Chromedriver executable not found.");
}
};
When i got the path of the chromedriver which is used to execute the tests, i just navigated to that folder and replaced chromedriver executable with the most recent version.
I hope this helps.
Try this: Download the compatible ChromeDriver.exe file for the updated version of Chrome browser and replace it. It works for me.
I've installed a redmine web application on a centOs 7, with postgresql 9.1 and using passenger. When I access the redmine application, the following error appears:
We're sorry, but something went wrong.
The issue has been logged for investigation. Please try again later.
Error ID: f4adae6a Details:
Web application could not be started by the Phusion Passenger
application server.
Please read the Passenger log file (search for the Error ID) to find
the details of the error.
When I access the erro_log file at /var/log/httpd/ it is like this:
[ E 2018-05-25 16:28:01.7581 24316/Td age/Cor/App/Implementation.cpp:221 ]: Could not spawn process for application /opt/redmine: An operating system error occurred while preparing to spawn an application process: Cannot create FIFO file /tmp/passenger.spawn.XXXXCTqsz4/response/finish: Permission denied (errno=13)
Error ID: f4adae6a
Error details saved to: /tmp/passenger-error-H1zmwo.html
[ E 2018-05-25 16:28:01.7609 24316/T6 age/Cor/Con/CheckoutSession.cpp:276 ]: [Client 1-2] Cannot checkout session because a spawning error occurred. The identifier of the error is f4adae6a. Please see earlier logs for details about the error.
It seems that, first of all, apache is not logging the error at /tmp/passenger-error-H1zmwo.html as it was supposed to do.
I've already tried to loossing the permissions to the /opt/redmine using the following guide HERE
I'm on redmine 3.4.3, ruby 2.3.1 and rails 4.2.8. Passenger 5.3.1
Do'nt know what to do anymore. Appreciate a little help. Any more info please ask me.
What you describe points very much to wrong filesystem permissions for /tmp
It should look like this:
user#host:/$ ls -ld /tmp
drwxrwxrwt 8 root root 4096 May 29 16:32 /tmp
If it does not try this (as root or via sudo):
chmod 1777 /tmp
Issue :
We are running NightWatch tests in Jenkins, and once in a while, we get this error :
[0;31mConnection refused! Is selenium server started?
[0m[0;90m{ Error: socket hang up
at createHangUpError (_http_client.js:253:15)
at Socket.socketCloseListener (_http_client.js:285:23)
at emitOne (events.js:101:20)
at Socket.emit (events.js:188:7)
at TCP._handle.close [as _onclose] (net.js:501:12) code: 'ECONNRESET' }[0m
The fix recommended in other places is already there :
export DBUS_SESSION_BUS_ADDRESS=/dev/null
This is how we run the tests :
sudo npm install selenium-standalone -g
selenium-standalone install --version=3.0.1 --baseURL=https://selenium-release.storage.googleapis.com --drivers.chrome.version=2.28 --drivers.chrome.baseURL=https://chromedriver.storage.googleapis.com --basePath=bin
sudo npm install nightwatch#0.9.13 -g && nightwatch --tag sanity --retries 1 --suiteRetries 1
Rebuilding the job usually run the tests successfully.
Softwares' version:
Chrome : 57
Chrome driver : 2.28
Selenium: 3.0.1
NightWatch : 0.9.13 (bumped down from 0.9.14 in case the latest release had a bug but no change.)
Jenkins : 1.6x
Ubuntu : 16.04
Using xvfb
Error Scenarios
The tests were running fine until about 2 weeks ago, just when we switched to Ubuntu 16, but that day it started happening on Ubuntu 14 too.
It especially happens when we've just spun a new Jenkins slave (on AWS cloud.) Happens more often at the very start of the test run but sometimes it happens in the middle of the run too.
I'll appreciate any help or pointers!
I have the same problem yesterday.
Maybe you can change the version of Chrome.
such as Chrome:55.
when i changed the version of chrome the selenium
We ran into a similar issue, but our error message was more specific:
Selenium is already running on port ####. Or some other service is.
The solution was to use the Jenkins Port Allocator Plugin to assign an available port number to an environment variable.
From there, we were able to set the port number in our globals.js like this (with a default of 4444 for running locally):
portNumber: process.env.PORT_NUMBER || 4444,
In our nightwatch.conf.js file, we used a lodash template to replace values in our nightwatch.json like this:
fs = require('fs'),
_ = require('lodash'),
template = _.template(fs.readFileSync('./nightwatch.json', 'utf8')),
settingsString,
settings;
settingsString = template({
portNumber: globals.portNumber
});
settings = JSON.parse(settingsString);
module.exports = settings;
Finally, in our nightwatch.conf file, we set the values for all port references to:
"<%= portNumber %>"