I'm running the following command:
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
and getting this error:
sysctl: cannot stat /proc/sys/fs/inotify/max_user_watches: No such file or directory
I'm not sure what to do about this. I'm running WSL on Windows 10 Build 1709, OS Build 16299.309
max_user_watches was not implemented in 1709. It apperars to be fixed in 1803. For more details you can refer to this bug:
https://github.com/Microsoft/WSL/issues/1705
Related
I have tried to get the kill table in arch linux normally kill -l worked in Debian based linux but not working in manjaro can some one help ?
Is the package psmisc installed? This package contains the kill command. To install the package run in the terminal sudo pacman -S psmisc
The xkill command only works on Xorg. If you are using Wayland this command will not work. To work on Xorg the xorg-xkill package must be installed with sudo pacman -S xorg-xkill.
In Wayland you can use the kill command. To check the process PID you can use the ps aux command.
Example:
ps aux | grep program_name
kill -9 process_number
ps aux | grep nautilus
kill -9 25704
I apologize if I didn't understand your question.
I am receiving PID recv: short read error while using lazy pages migration with CRIU.
At the source, I run the following command:
memhog -r1000 64m
cd /tmp/dump sudo -H -E criu dump -t $(pidof memhog) -D /tmp/dump --lazy-pages --address 10.237.23.102 --port 1234 --shell-job --display-stats -vvvv -o d.log
Then, in a separate terminal on the source machine itself:
scp -r /tmp/dump/ dst:/tmp/
Now, on the destination machine I start the daemon:
cd /tmp/dump criu lazy-pages --page-server --address $(gethostip -d src) --port 1234 --display-stats -vvvvv
And finally, the restore command:
cd /tmp/dump criu restore -D /tmp/dump/ --shell-job --lazy-pages -vvvv --display-stats -o restore.log -vvvv
The error is thrown by the lazy server daemon on the destination machine.
Furthermore, it works fine for the memhog installed from numactl. However, it does not if I build it from the source.
Any suggestions for solving this will be appreciated.
::Update:: Solved. See answer
Found the issue:
I was building them separately on two different machines due to which their "build-id" was not matching. Solution: Build on one machine and then just scp it over to the other machine.
System release: CoreOS 2135.5.0
Kernel: 4.19.50-coreos-r1
System install way: vmware
When I change the port in the sshd.service，it displays:
CoreOS-234 ssh # echo "Port 10000" >> /usr/share/ssh/sshd_config ;systemctl mask sshd.socket;systemctl enable sshd.service;systemctl restart sshd.service
-bash: /usr/share/ssh/sshd_config: Read-only file system
The file system that you are working in is currently in Read-only mode. Remounting the file system to read-write should resolve the issue. You will need to have root privilages:
$ mount -o remount,rw /
Occasionally the reason your file system will be running in read-only mode is due to Kernel issues, therefore there may be further problems with the system that will need to be debugged. Regarding the Kernel errors you may want to have a look at the following link: https://unix.stackexchange.com/questions/436483/is-remounting-from-read-only-to-read-write-potentially-dangerous?rq=1
In coreos /usr is designed to be a read-only file system, Remounting /usr is theoretically feasible, but is not officially recommended
You can refer to this
I use the following command to solve this problem
sudo sed -i '$a\Port=60022' /etc/ssh/sshd_config && \
sudo systemctl mask sshd.socket && \
sudo systemctl enable sshd.service && \
sudo systemctl start sshd.service
Rubymine has options to add remote sdks using Vagrant and SSH, however I decided to go with Docker. I already created a Ruby container, but I don't know how to enable SSH access to it so Rubymine can set it as the remote SDK.
Is it possible?
Tried to follow this article, but the Ruby image doesn't have yum and this package epel-release is for Fedora/RedHat.
Hey are you using this official Ruby docker image?
If so, it's based on Debian and you'll have to use apt-get to install packages.
Here's a handy script for installing openssh-server and configuring a user in a Dockerfile:
FROM ruby:2.1.9
#======================
# Install OpenSSH server (sshd)
#======================
RUN apt-get update -qqy \
&& apt-get -qqy install \
openssh-server \
&& echo "PidFile ${RUN_DIR}/sshd.pid" >> /etc/ssh/sshd_config \
&& sed -i 's|session required pam_loginuid.so|session optional pam_loginuid.so|g' /etc/pam.d/sshd \
&& mkdir -p /var/run/sshd \
&& rm -rf /var/lib/apt/lists/*
# Add user rubymine with password rubymine and give ownership of rubymine home dir
RUN adduser --quiet rubymine \
&& echo "rubymine:rubymine" | chpasswd \
&& chown -R rubymine:rubymine /home/rubymine \
EXPOSE 22
I'm not sure of what are the exact configurations you can perform with Rubymine. But it's possible to open a tty with the container without the need of ssh:
#run it as a daemon
docker run -d --name=myruby ruby:2.19
#connect to it
docker -it exec myruby /bin/bash
UPDATE:
Try setting DOCKER_HOST environment variable to listen on a tcp port:
export DOCKER_HOST='tcp://localhost:2376'
TL;DR - Dockerized Ambari on Ubuntu 14.04 Docker container throws error upon startup with default configurations
I'm attempting to Dockerize an Ambari deployment to support running it along side my Hadoop containers. Here is my Dockerfile:
FROM ubuntu:14.04
ENV AMBARI_HOME /opt/ambari
ENV AMBARI_VERSION 2.2.0.0
RUN export DEBIAN_FRONTEND=noninteractive \
&& apt-get update \
&& apt-get -y install wget software-properties-common python-software-properties openssh-client openssh-server
# Install Java.
RUN \
echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \
add-apt-repository -y ppa:webupd8team/java && \
apt-get update && \
apt-get install -y oracle-java8-installer && \
rm -rf /var/lib/apt/lists/* && \
rm -rf /var/cache/oracle-jdk8-installer
# Define commonly used JAVA_HOME variable
ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
RUN mkdir -p "$AMBARI_HOME"
WORKDIR $AMBARI_HOME
# passwordless ssh
RUN export DEBIAN_FRONTEND=noninteractive \
&& echo -e 'y\n'|ssh-keygen -q -t rsa -N "" -f /root/.ssh/id_rsa \
&& cp /root/.ssh/id_rsa.pub /root/.ssh/authorized_keys
RUN export DEBIAN_FRONTEND=noninteractive \
&& wget -nv http://public-repo-1.hortonworks.com/ambari/ubuntu14/2.x/updates/2.2.0.0/ambari.list -O /etc/apt/sources.list.d/ambari.list \
&& apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD \
&& apt-get update \
&& apt-get -y install ambari-server
#Disable SELinux
RUN echo SELINUX=disabled >> /etc/selinux/config
EXPOSE 8080
RUN ambari-server setup -s --verbose --java-home $JAVA_HOME
CMD ambari-server start
When I start the container I get the following error -
Using python /usr/bin/python2
Starting ambari-server
Ambari Server running with administrator privileges.
About to start PostgreSQL
Organizing resource files at /var/lib/ambari-server/resources...
WARNING: setpgid(73, 0) failed - [Errno 13] Permission denied
Server PID at: /var/run/ambari-server/ambari-server.pid
Server out at: /var/log/ambari-server/ambari-server.out
Server log at: /var/log/ambari-server/ambari-server.log
Waiting for server start.........
ERROR: Exiting with exit code -1.
REASON: Ambari Server java process died with exitcode -1. Check /var/log/ambari-server/ambari-server.out for more information.
There doesn't seem to be anything useful in the ambari-server.log or .out
I found an issue for WARNING: setpgid(73, 0) failed - [Errno 13] Permission denied fixed here: setpgid issue
From reading the HortonWorks docs for deploying to Ubuntu 14.04, this should work:
Install Ambari on Ubuntu 14.04
I've tried to deploy with the embedded Postges as well as an external one with the same results.
One interesting note is that even with the error, Ambari appears to be up and I can login as the default admin/admin, but when calling `ambari-server stop' it says no process is running...
root#3e6d778b43f8:/opt/ambari# ambari-server stop
Using python /usr/bin/python2
Stopping ambari-server
Ambari Server is not running
root#3e6d778b43f8:/opt/ambari# jps
868 AmbariServer
955 Jps
I'll replicate this setup on my Ubuntu box tomorrow and see if the same thing happens.
Thanks!
Edit #1: docker info
vagrant#vagrant-ubuntu-trusty-64:/vagrant/scripts$ docker info
Containers: 14
Images: 161
Server Version: 1.9.1
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 189
Dirperm1 Supported: false
Execution Driver: native-0.2
Logging Driver: json-file
Kernel Version: 3.13.0-44-generic
Operating System: Ubuntu 14.04.1 LTS
CPUs: 1
Total Memory: 3.861 GiB
Name: vagrant-ubuntu-trusty-64
ID: 7AD6:Z5TH:76NW:G54B:IHVK:PWKP:E2LI:CRPI:MIGM:STJU:3D2B:K7EQ
WARNING: No swap limit support
vagrant#vagrant-ubuntu-trusty-64:/vagrant/scripts$ docker version
Client:
Version: 1.9.1
API version: 1.21
Go version: go1.4.2
Git commit: a34a1d5
Built: Fri Nov 20 13:12:04 UTC 2015
OS/Arch: linux/amd64
Server:
Version: 1.9.1
API version: 1.21
Go version: go1.4.2
Git commit: a34a1d5
Built: Fri Nov 20 13:12:04 UTC 2015
OS/Arch: linux/amd64
docker is running inside of a Vagrant Virtualbox instance (v1.8.1)
I had same problem with ambari-server inside docker on ubuntu 14.04. Could you try the following
Workaround the aufs problem
Inside /etc/default/docker add
DOCKER_OPTS="--storage-driver=devicemapper"
and restart the docker service. Note that after this all your images will disappear (http://muehe.org/posts/switching-docker-from-aufs-to-devicemapper/). Rebuild your images.
To be honest I'm not 100% sure if this part is really needed.
After switching from aufs to devicemapper you might get the following error:
ERROR: Could not find container for entity id
The solution was to remove the old AUFS db and any existing containers:
sudo rm -rf /var/lib/docker/containers/*
sudo rm -rf /var/lib/docker/linkgraph.db
Restarting your docker images/containers should now work on the devicemapper engine.
Put apparmor into complain mode for docker
Inside /etc/apparmor.d/docker comment out (#) line deny #{PROC}/{*,**^[0-9*],sys/kernel/shm*} wkx,, it somehow confuses apparmor utils. Than run
sudo aa-complain /etc/apparmor.d/docker
If aa-complain throws command not found, install:
sudo apt-get install apparmor-utils
After starting the container ambari-server started working for me.
I dont know how docker relies here on apparmor, i.e. what risks the operation above introduces...
It looks like there's an issue deploying Ambari to a docker container.. I broke it out and installed it onto a Vagrant 14.04 Ubuntu VM wit the following scripts:
install_java.sh
#!/bin/bash
echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \
add-apt-repository -y ppa:webupd8team/java && \
apt-get update && \
apt-get install -y oracle-java8-installer && \
rm -rf /var/lib/apt/lists/* && \
rm -rf /var/cache/oracle-jdk8-installer
install_ambari.sh
#!/bin/bash
export DEBIAN_FRONTEND=noninteractive \
&& wget -nv http://public-repo-1.hortonworks.com/ambari/ubuntu14/2.x/updates/2.2.0.0/ambari.list -O /etc/apt/sources.list.d/ambari.list \
&& apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD \
&& apt-get update \
&& apt-get -y install ambari-server
Followed by:
sudo ambari-server setup -s -v -j $JAVA_HOME
sudo ambari-server start -v
#thaJeztah - what do I need to fix with my Dockerfile setup?