NATS installation

nats_install.sh

#!/bin/sh


adduser --system --group --no-create-home --shell /bin/false nats

mkdir -p /srv/nats/bin
mkdir -p /var/log/gnatsd

chown -R nats:nats /srv/nats
chown -R nats:nats /var/log/gnatsd

touch /srv/nats/gnatsd.conf
cat <<EOF >/srv/nats/gnatsd.conf

http_port: 8222
log_file: "/var/log/gnatsd/gnatsd.log" 

EOF

cat <<EOF > /etc/systemd/system/nats.service
[Unit]
Description=NATS messaging server

[Service]
ExecStart=/srv/nats/bin/gnatsd -c /srv/nats/gnatsd.conf
User=nats
Restart=on-failure

[Install]
WantedBy=multi-user.target

EOF

cat <<'EOF' >> /etc/logrotate.conf
/var/log/gnatsd/gnatsd.log {
    daily
    rotate 30
    compress
    missingok
    notifempty
    postrotate
        kill -SIGUSR1 `cat /var/run/gnatsd.pid`
    endscript
}
EOF


cd /root

apt-get install git -y

wget https://dl.google.com/go/go1.12.4.linux-amd64.tar.gz

tar -C /usr/local -xzf go1.12.4.linux-amd64.tar.gz

#add go  to path
#edit /etc/profile and add /usr/local/bin to the PATH variable
export PATH=$PATH:/usr/local/bin
#install nats
go get github.com/nats-io/gnatsd

cp /root/go/bin/gnatsd /srv/nats/bin/