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setup-elk.sh
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setup-elk.sh
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#!/bin/bash
set -x
set -e
# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
echo "This script must be run as root" 1>&2
exit 1
fi
# Check to make sure script is running on CentOS/Redhat
if [ ! -f /etc/redhat-release ]; then
echo "This script is for CentOS"
exit
fi
# Update system
yum update -y && yum upgrade -y
################################## NTP Time Sync ##################################
yum install ntp ntpdate ntp-doc -y || true
systemctl enable ntpd || true
systemctl start ntpd || true
ntpdate pool.ntp.org || true
##################################### Install Java ##################################
cd /opt
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u102-b14/jre-8u102-linux-x64.rpm"
rpm -Uvh jre-8u102-linux-x64.rpm
rm -rf jre-8u102-linux-x64.rpm
yum install java-devel -y
##################################### Install/Setup Elasticsearch #####################################
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
echo '[elasticsearch-5.x]
name=Elasticsearch repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
' | sudo tee /etc/yum.repos.d/elasticsearch.repo
sudo yum -y install elasticsearch
sed -i 's/#network.host: 192.168.0.1/network.host: localhost/g' /etc/elasticsearch/elasticsearch.yml
systemctl enable elasticsearch
systemctl start elasticsearch
##################################### Install/Setup Kibana #####################################
echo '[kibana-5.x]
name=Kibana repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
' | sudo tee /etc/yum.repos.d/kibana.repo
sudo yum -y install kibana
sudo /bin/systemctl daemon-reload
sudo /bin/systemctl enable kibana.service
sudo systemctl start kibana.service
##################################### Install/Setup Nginx #####################################
yum -y install epel-release
yum -y install nginx httpd-tools
sudo htpasswd -c /etc/nginx/htpasswd.users kibanaadmin
cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak
# Delete server block in default config
sed -i -e '38,87d' /etc/nginx/nginx.conf
read -p "Create OpenSSL cert or Let's Encrypt Cert [L/O]" -n 1 -r
if [[ $REPLY =~ ^[Oo]$ ]]; then
mkdir /etc/nginx/ssl
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/nginx/ssl/nginx.key -out /etc/nginx/ssl/nginx.crt
sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048
cat > /etc/nginx/conf.d/kibana.conf << EOF
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
return 301 https://$host$request_uri;
}
server {
listen 443 ssl;
server_name _;
root /usr/share/nginx/html;
index index.html index.htm;
ssl_certificate /etc/nginx/ssl/nginx.crt;
ssl_certificate_key /etc/nginx/ssl/nginx.key;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_stapling on;
ssl_stapling_verify on;
add_header Strict-Transport-Security max-age=15768000;
auth_basic "Restricted";
auth_basic_user_file /etc/nginx/htpasswd.users;
location / {
proxy_pass http://localhost:5601;
proxy_http_version 1.1;
proxy_set_header Upgrade \$http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host \$host;
proxy_cache_bypass \$http_upgrade;
}
}
EOF
sudo systemctl start nginx
sudo systemctl enable nginx
sudo setsebool -P httpd_can_network_connect 1
else
sudo yum install certbot
echo 'server {
location ~ /.well-known {
allow all;
}
}
' | sudo tee /etc/nginx/conf.d/le-well-known.conf
sudo systemctl start nginx
sudo systemctl enable nginx
read -p "Enter domain name: " -e domainName
sudo certbot certonly -a webroot --webroot-path=/usr/share/nginx/html -d $domainName
sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048
cat > /etc/nginx/conf.d/kibana.conf << EOF
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
return 301 https://$host$request_uri;
}
server {
listen 443 ssl;
server_name ${domainName} www.${domainName};
ssl_certificate /etc/letsencrypt/live/${domainName}/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/${domainName}/privkey.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_stapling on;
ssl_stapling_verify on;
add_header Strict-Transport-Security max-age=15768000;
# The rest of your server block
root /usr/share/nginx/html;
index index.html index.htm;
auth_basic "Restricted";
auth_basic_user_file /etc/nginx/htpasswd.users;
location / {
proxy_pass http://localhost:5601;
proxy_http_version 1.1;
proxy_set_header Upgrade \$http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host \$host;
proxy_cache_bypass \$http_upgrade;
}
}
EOF
rm -rf /etc/nginx/conf.d/le-well-known.conf
sudo systemctl restart nginx
sudo setsebool -P httpd_can_network_connect 1
sudo certbot renew
echo '30 2 * * 1 /usr/bin/certbot renew >> /var/log/le-renew.log
35 2 * * 1 /usr/bin/systemctl reload nginx
' >> /etc/crontab
systemctl start crond
fi
##################################### Install/Setup Logstash #####################################
echo '[logstash-5.x]
name=Elastic repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
' | sudo tee /etc/yum.repos.d/logstash.repo
sudo yum -y install logstash
# Install filebeat
cd /usr/share/logstash
./bin/logstash-plugin install logstash-input-beats
read -p "Logstash encryption or no encryption [E/N]: " -n 1 -r
if [[ $REPLY =~ ^[E]$ ]]; then
read -p "OpenSSL cert or Let's Encrypt Cert [L/O]: " -n 1 -r
if [[ $REPLY =~ ^[L]$ ]]; then
touch /etc/logstash/conf.d/02-beats-input.conf
cat > /etc/logstash/conf.d/02-beats-input.conf << EOF
input {
beats {
port => 5044
ssl => true
ssl_certificate => "/etc/letsencrypt/live/$domainName/fullchain.pem"
ssl_key => "/etc/letsencrypt/live/$domainName/privkey.pem"
}
}
EOF
else
echo 'input {
beats {
port => 5044
ssl => true
ssl_certificate => "/etc/nginx/ssl/nginx.crt"
ssl_key => "/etc/nginx/ssl/nginx.key"
}
}
' | sudo tee /etc/logstash/conf.d/02-beats-input.conf
fi
else
echo 'input {
beats {
port => 5044
ssl => false
}
}
' | sudo tee /etc/logstash/conf.d/02-beats-input.conf
fi
#### Syslog filter ####
echo 'filter {
if [type] == "syslog" {
grok {
match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
add_field => [ "received_at", "%{@timestamp}" ]
add_field => [ "received_from", "%{host}" ]
}
syslog_pri { }
date {
match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
}
}
' | sudo tee /etc/logstash/conf.d/10-syslog-filter.conf
#### Elasticsearch output ####
echo 'output {
elasticsearch {
hosts => ["http://localhost:9200"]
index => "%{[@metadata][beat]}-%{+YYYY.MM.dd}"
document_type => "%{[@metadata][type]}"
}
}
' | sudo tee /etc/logstash/conf.d/30-elasticsearch-output.conf
# Load Kibana dashboards
cd ~
curl -L -O https://download.elastic.co/beats/dashboards/beats-dashboards-1.1.0.zip
sudo yum -y install unzip
unzip beats-dashboards-*.zip
cd beats-dashboards-*
./load.sh
systemctl restart logstash
systemctl enable logstash
##################################### Install/Setup FirewallD #####################################
yum install firewalld -y
systemctl start firewalld
systemctl enable firewalld
firewall-cmd --zone=public --permanent --add-service=http
firewall-cmd --zone=public --permanent --add-service=https
firewall-cmd --zone=public --permanent --add-service=ssh
firewall-cmd --zone=public --permanent --add-port=5044/tcp
firewall-cmd --reload