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69.167.136.200

File Name : setup_mysql_user.sh

#!/bin/bash
# create lwmonitoring mysql user 
# check/cleanup existing config/user
# todo: verify if mysql is running

# fail if there is no client.
which mysql > /dev/null
if [ $? -ne 0 ]; then 
	echo "A mysql client doesn't seem to exist."
	exit
fi
#fail nicely  if we can't connect to mysql, since we run this script on install
mysql -B -h localhost -e "select user(); " > /dev/null 2>&1
if [ $? -ne 0 ] ; then
	echo "Couldn't connect to mysql server to setup mysqld_exporter."
	exit
fi

MY_CNF=/usr/local/lp/etc/exporters/my.cnf
owner="systuser"
mysql_user="lwmonitoring"
mysql_pass=$(echo -n \' ; tr -dc '_A-Z-a-z-0-9!@#$%^&*()[];:,.<>|~' < /dev/urandom | head -c16 ; echo -n \')

create_mysql_user() {
	# echo "creating $mysql_user with $mysql_pass"
    # Create MySQL user
    mysql -h localhost -e "GRANT REPLICATION CLIENT, PROCESS on *.* TO '${mysql_user}'@'localhost' IDENTIFIED BY ${mysql_pass} WITH MAX_USER_CONNECTIONS 3"
    mysql -h localhost -e "GRANT select on performance_schema.* to '${mysql_user}'@'localhost'"
    # mysql -h -e "SELECT User FROM mysql.user where User='$mysql_user'"
}

create_cnf() {
    # Update environment file
    # echo "DATA_SOURCE_NAME='${mysql_user}:${mysql_pass}@(localhost:3306)/'" > /usr/local/lp/prometheus/env_files/mysqld_exporter

# seems to use a my.cnf file now, set it up here;
    MY_CNF=/usr/local/lp/etc/exporters/my.cnf
    cat << EOF > $MY_CNF
[client]
user=$mysql_user
password=$mysql_pass
EOF
chown systuser: $MY_CNF
chmod 600 $MY_CNF
}

get_creds(){
	if [ -f "$MY_CNF" ]; then 
		if [ `grep '^password=' $MY_CNF` ]; then

mysql_pass=`grep '^password=' $MY_CNF |cut -d= -f2-`
			export mysql_pass
		else 
			return 1 
		fi
	else 
		return 1
	fi
}

check_connection() {
	mysql --defaults-file=$MY_CNF  -e 'select user();' -B |grep "$mysql_user@localhost"
}

cleanup(){
	mysql -e "DROP USER '$mysql_user'@'localhost'"
	rm -f $MY_CNF
}

main() {
	if [ ! -f $MY_CNF ] || [ $force ]; then 
		echo "creating $MY_CNF"
		create_cnf
	else
		get_creds
	fi
	# check if we can connect, create user if not
	if [ ! `check_connection` ] || [ $force ]; then
		echo "creating $mysql_user"
		create_mysql_user
	fi
}

case "$1" in 
	"--force" ) 
		force=true 
		;;
	"get_creds")
		get_creds && echo "got $mysql_pass" || echo "failed"
		exit
		;;
	"check") 
		get_creds && echo $mysql_pass || echo "failed to get credentials"
		check_connection && echo "connected" || echo "Failed to connect"
		exit
		;;
	"clean")
		cleanup
		exit
		;;
	*)
esac
main

System Information
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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2019-06-29 02:12:00
..	dir	-	root/root	0755	2019-06-29 02:12:00
init.d	dir	-	root/root	0755	2019-06-29 02:12:00
systemd	dir	-	root/root	0755	2019-06-29 02:12:00
upstart	dir	-	root/root	0755	2019-06-29 02:12:00
logrotate	file	181 B	systuser/systuser	0664	2019-04-22 07:05:49
setup_mysql_user.sh	file	2.45 KB	systuser/systuser	0775	2019-04-22 07:05:49