Temporery disable SELinux
sudo setenforce 0
/etc/selinux/config file and set the SELINUX mod to disabled
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing – SELinux security policy is enforced.
# permissive – SELinux prints warnings instead of enforcing.
# disabled – No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted – Targeted processes are protected,
# mls – Multi Level Security protection.
SELINUXTYPE=targeted
2019/06/12
Disable SELinux Centos 7
2019/02/15
How to move docker’s default /var/lib/docker to another directory on Ubuntu/Debian Linux
The following config will guide you through a process of changing the docker’s default /var/lib/docker storage disk space to another directory. There are various reasons why you may want to change docker’s default directory from which the most obvious could be that ran out of disk space. The following guide should work for both Ubuntu and Debian Linux or any other systemd system. Make sure to follow this guide in the exact order of execution.
Let’s get started by modifying systemd’s docker start up script. Open file /lib/systemd/system/docker.service with your favorite text editor and replace the following line where /new/path/docker is a location of your new chosen docker directory:
FROM: ExecStart=/usr/bin/docker daemon -H fd:// TO: ExecStart=/usr/bin/docker daemon -g /new/path/docker -H fd://
When ready stop docker service:
# systemctl stop docker
It is important here that you have completely stopped docker daemon. The following linux commandwill yield no output only if docker service is stopped:
# ps aux | grep -i docker | grep -v grep
If no output has been produced by the above command, reload systemd daemon:
# systemctl daemon-reload
Once this is done create a new directory you specified above and optionally rsync current docker data to a new directory:
# mkdir /new/path/docker # rsync -aqxP /var/lib/docker/ /new/path/docker
At this stage we can safely start docker daemon:
# systemctl start docker
Confirm that docker runs within a new data directory:
# ps aux | grep -i docker | grep -v grep root 2095 0.2 0.4 664472 36176 ? Ssl 18:14 0:00 /usr/bin/docker daemon -g /new/path/docker -H fd:// root 2100 0.0 0.1 360300 10444 ? Ssl 18:14 0:00 docker-containerd -l /var/run/docker/libcontainerd/docker-containerd.sock --runtime docker-runc
All done.
2019/01/10
Centos – Give Tomcat access to Mysql/MariaDB
To see all Tomcat options
getsebool -a | grep tomcat
To set Tomcat access to database
setsebool tomcat_can_network_connect_db 1
SELinux workaround
Give Tomcat network access.
Error message
Could not connect to address=(host=)(port=3306)(type=master) : Permission denied (connect failed)
Tomcat have no access to file system
ps -eZ | grep tomcat_t
yum install policycoreutils-python
semanage permissive -a tomcat_t
2018/11/26
Selinux – Permission denied on accessing host directory in docker
chcon -Rt svirt_sandbox_file_t /path/to/volume
2018/11/12
Elasticsearch commands
curl localhost:9200/_cat/indices?v
curl -XGET ‘http://127.0.0.1:9200/wikidb/page/_search?q=wikidb’
2018/10/02
Vilmas API
Det verkar som att Vilma ska släppa ett öppet API. Första steget är att publicera sina priser.
https://api.vimla.se/abroad
2018/08/30
Zoneminder in Docker
docker swarm init
docker stack deploy -c docker-compose.yml zm
echo “wait for a few seconds to MySQL start for the first time”
docker service scale zm_web=1
echo “go to ZoneMinder console Options-Servers and declare node.0->stream0.localhost and node.1 … node.3, finally start”
docker service scale zm_stream=3
docker service ls
Good debug commands
sudo docker service ps zm_web
sudo docker service ls
sudo docker service rm
2018/08/29
Docker
docker build
docker-compose up
docker ps
docker exec -i -t <NAMES> /bin/bash
docker logs <NAMES>
docker-compose.yaml
version: '3'
services:
influxdb:
image: influxdb:1.5.4
restart: always
volumes:
- /media/space/dockerVolumes/influxdb.1.5.4:/var/lib/influxdb
ports:
- 8086:8086
/lib/systemd/system/docker.service with your favorite text editor and replace the following line where /new/path/docker is a location of your new chosen docker directory:
FROM:
ExecStart=/usr/bin/docker daemon -H fd://
TO:
ExecStart=/usr/bin/docker daemon -g /new/path/docker -H fd://