linux

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Install prometheus under Ubuntu

Install from repository
sudo apt-get install -y prometheus
# optional
sudo apt-get install -y prometheus-node-exporter
sudo apt-get install -y prometheus-alertmanager
sudo apt-get install -y prometheus-pushgateway

Ansible installation
https://github.com/panticz/ansible/tree/master/roles/prometheus
- hosts: localhost
roles:
- prometheus

Login
http://SERVER_IP:9090/

Commands
avg_over_time(node_memory_MemAvailable[5m])/1024/1024

Repositroy

Install Couch DB under Ubuntu

Installation
wget https://couchdb.apache.org/repo/bintray-pubkey.asc -qO - | sudo apt-key add -
echo "deb https://apache.bintray.com/couchdb-deb $(lsb_release -cs) main" | sudo tee -a /etc/apt/sources.list.d/couchdb.list
sudo apt update

debconf-set-selections <<\EOF
couchdb couchdb/adminpass string admin
couchdb couchdb/adminpass_again string admin
couchdb couchdb/mode select standalone
couchdb couchdb/bindaddress string 0.0.0.0
EOF

sudo apt-get install -y couchdb

Login
http://SERVER_IP:5984/_utils/
user: admin
pass: admin

Build Wildfly deb package

# http://wildfly.org/downloads/
# https://github.com/mattthias/wildfly-packaging

VERSION=13.0.0.Final
REVISION=1

sudo apt-get install -y devscripts

# Download the "source" (the binary "Java EE7 Full & Web Distribution")
# wget http://download.jboss.org/wildfly/10.1.0.Final/wildfly-10.1.0.Final.tar.gz
# https://github.com/ilanddev/wildfly-debian/tree/master/debian

# download archive
mkdir /tmp/wildfly
wget http://download.jboss.org/wildfly/${VERSION}/wildfly-${VERSION}.tar.gz -q -O /tmp/wildfly/wildfly-${VERSION}.tar.gz

# create a link to archive
cd /tmp/wildfly

Install and configure autofs under Ubuntu

# install autofs package
apt-get install -y autofs

# create required directories
mkdir /etc/auto.master.d

# Configure NFS mount nas.example.com:/volume1/backup to /media/backup
echo "/media /etc/auto.media" >> /etc/auto.master.d/media.autofs
echo "backup -fstype=nfs,rw,async,vers=3 nas.example.com:/volume1/backup" >> /etc/auto.media

# check (directory will by created on access)
ll /media/backup

# debug
service autofs stop
sudo automount -f -v

Ansible playbook
https://github.com/panticz/ansible/blob/master/autofs-test.yml

LXC: create Ubuntu Bionic container

sudo lxc-create -t ubuntu -n bionic -- template-options -r bionic

Nginx access control / GeoIP

cat < /etc/nginx/conf.d/geoip.conf
geoip_country /usr/share/GeoIP/GeoIP.dat;

map $geoip_country_code $allowed_country {
default no;
DE yes;
CH yes;
}

log_format allow "allow $remote_addr;";
EOF
chmod 644 /etc/nginx/conf.d/geoip.conf

cat < /usr/local/bin/nginx-allow
#!/bin/bash

while inotifywait --quiet --event create,delete --exclude "[^c][^o][^n][^f]$" /tmp
do
/usr/sbin/nginx -t && /usr/sbin/service nginx reload
done
EOF
chmod 755 /usr/local/bin/nginx-allow

cat < /etc/systemd/system/nginx-allow.service
[Unit]

VMware Player

wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/installit/master/install.vmware-player.sh -O - | bash -

#!/bin/bash

URL=https://download3.vmware.com/software/player/file/VMware-Player-14.0.0-6661328.x86_64.bundle

# download
wget -q ${URL} -O /tmp/${URL##*/}

# install
sudo /tmp/${URL##*/} --console --required --eulas-agreed

sudo apt-get install -y open-vm-tools

Links
https://docs.vmware.com/en/VMware-Workstation-Player/12.0/com.vmware.player.linux.using.doc/GUID-42F4754B-7547-4A4D-AC08-353D321A051B.html

openconnect

echo pass1234 | openconnect --no-cert-check vpn.example.com --user foo

start-stop-daemon --start --make-pidfile --pidfile "${VPNPID}" \
--stderr "${VPNERRFILE}" --stdout "${VPNLOGFILE}" \
--background --exec /bin/bash \
-- -c "exec /usr/sbin/openconnect --pid-file=\"${VPNPID}\" ${!VPNOPTS} ${!SERVER} <<< \`echo \"${!PASSWORD}\"\`"

# Custom script
# cat /etc/vpnc/post-connect.d/route
#!/bin/bash

ip route del default
ip route add default via 10.0.17.254
ip route add 120.1.0.0/16 dev tun0 scope link

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