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David B.'s questions

Martin Hope
David B.
Asked: 2016-08-04 08:55:00 +0800 CST
  • -1

I looked at this topic to write a bash script that checks if a file has been modified every 60 min and sends me an email using ssmtp if that is the case. Here is its content (monitoring.sh):

#!/bin/bash

[[ -z `find /home/myuser/sites/mysite/logs/nginx/error.log -mmin -60` ]]

if [ $? -eq 0 ]
then
    echo -e "nothing has changed"
else
    echo -e "Something went wrong!" | ssmtp -vvv [email protected]
fi

I then added this script to an hourly cronjob:

 01 * * * * /home/myuser/sites/mysite/logs/nginx/monitoring.sh

This does not work at all. Looking at my emails (the sender account that ssmtp uses), the script runs every hour and echoes nothing has changed even if the error.log file has been modified.

Maybe using inotifywait would be more appropriate? Any ideas?

Thanks in advance.

EDIT: If I run this script manually after modifying the error.log file, it works and I receive the email.

bash shell-scripting
Martin Hope
David B.
Asked: 2016-03-27 10:24:10 +0800 CST
  • 6

I just started learning the basics of Ansible, and looked up why I am getting the above error but can't figure out how to sort it out. This is the trace:

Me-Air:ansible me$ ansible all -m ping -vvv
Using /private/etc/ansible/ansible.cfg as config file
<Public_IP> ESTABLISH SSH CONNECTION FOR USER: [my_user_name_on_EC2_instance]
<Public_IP> SSH: EXEC ssh -C -q -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 -o ControlPath=/Users/me/.ansible/cp/ansible-ssh-%h-%p-%r -tt [Public_IP] '/bin/sh -c '"'"'( umask 22 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-... `" && echo "` echo $HOME/.ansible/tmp/ansible-tmp-... `" )'"'"''
Public_IP | UNREACHABLE! => {
    "changed": false,
    "msg": "SSH encountered an unknown error during the connection. We recommend you re-run the command using -vvvv, which will enable SSH debugging output to help diagnose the issue",
    "unreachable": true
}

------

I was previously asked:

The authenticity of host 'public IP' can't be established.
RSA key fingerprint is ...[key].
Are you sure you want to continue connecting (yes/no)? yes

This is what I have in the hosts file:

[name_of_the_EC2_instance]
Public_IP

And in the config file:

[defaults]
host_key_checking = False

I'm missing something there. Any ideas?

Thanks in advance.

ssh