'Permission Denied' while configuring Filebeat and Logstash using Bash Script - bash

Question

I am writing a script that creates a logstash conf file and adds the configuration, and removes the existing filebeat config file and creates a new one.
I am using cat, but when I run the script, I get:
./script.sh: /etc/logstash/conf.d/apache.conf : Permission denied
./script.sh: /etc/filebeat/filebeat.yml: Permission denied
This is the script. I have tried using sudo chown -R.
Am I missing something or is there a better way to configure my file?
#!/bin/bash
sudo rm /etc/filebeat/filebeat.yml
cat > "/etc/filebeat/filebeat.yml" <<EOF
filebeat.inputs:
- type: filestream
id: my-filestream-id
enabled: true
paths:
- /home/ubuntu/logs/.*log
setup.kibana:
output.logstash:
hosts: ["169.254.169.254:5044"]
EOF
sudo touch /etc/logstash/conf.d/apache.conf
sudo cat > "/etc/logstash/conf.d/apache.conf " <<EOF
input {
beats {
port => 5044
}
}
output {
elasticsearch {
hosts => ["169.254.169.254"]
}
}
EOF

Answer 1

The main problem here is because of how redirections work.
According to this answer:
All redirections (including >) are applied before executing the actual command. In other words, your shell first tries to open /etc/php5/apache2/php.ini for writing using your account, then runs a completely useless sudo cat.
You can easily solve your problem by using tee (with sudo) instead of cat. Then, your script should be like this:
#!/bin/bash
sudo rm /etc/filebeat/filebeat.yml
sudo tee "/etc/filebeat/filebeat.yml" << EOF
filebeat.inputs:
- type: filestream
id: my-filestream-id
enabled: true
paths:
- /home/ubuntu/logs/.*log
setup.kibana:
output.logstash:
hosts: ["169.254.169.254:5044"]
EOF
sudo touch /etc/logstash/conf.d/apache.conf
sudo tee "/etc/logstash/conf.d/apache.conf" << EOF
input {
beats {
port => 5044
}
}
output {
elasticsearch {
hosts => ["169.254.169.254"]
}
}
EOF