HIRS/package/linux/db/mysql_util.sh
2024-07-26 10:59:22 -04:00

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#!/bin/bash
#####################################################################################
#
# Functions to check mysql and start if not running.
# Also a function for checking if running in a container
#
#####################################################################################
SQL_SERVICE="mariadb"
# Checks to see if systemctl is available
# -p to print status
check_systemd () {
DB_SERVICE=false
SYSD_SERVICE=false
PRINT_STATUS=$1
# Check if systemctl is present (not present in a Docker container)
if [[ $(ps --no-headers -o comm 1) == "systemd" ]]; then
SYSD_SERVICE=true
systemctl is-active --quiet mariadb
if [[ $? -eq 0 ]]; then
DB_SERVICE=true
fi
fi
if [[ $PRINT_STATUS == "-p" ]] && [[ $DB_SERVICE == "true" ]]; then echo "Systemd:MariaDB service is available" | tee -a "$LOG_FILE"; fi
if [[ $PRINT_STATUS == "-p" ]] && [[ $DB_SERVICE == "false" ]]; then echo "Systemd:MariaDB service is NOT available" | tee -a "$LOG_FILE"; fi
if [ -d /opt/hirs/aca/scripts/db ]; then
MYSQL_DIR="/opt/hirs/aca/scripts/db"
else
MYSQL_DIR="$SCRIPT_DIR/../db"
fi
}
# Check for mysql command line
check_mariadb_install () {
type mysql >/dev/null 2>&1 && installed=true || installed=false
if [ $installed = true ]; then
echo "mysql has been installed"
else
echo "mysql has NOT been installed, aborting install"
exit 1;
fi
}
# Starts mariadb during intial install
start_mysqlsd () {
PRINT_STATUS=$1
PROCESS="mysqld"
source /etc/os-release
if [ $ID = "ubuntu" ]; then
PROCESS="mariadb"
fi
# Make sure log file has correct permissions
chown -R mysql:mysql /var/lib/mysql/ >> "$LOG_FILE"
if [ $DB_SERVICE = true ]; then
systemctl is-active --quiet mariadb
if [[ $? -ne 0 ]]; then
echo "mariadb service not running , attempting to restart"
systemctl start mariadb >> "$LOG_FILE";
sleep 2
fi
else # Not using Systemd
# Check if mysql is already running, if not initialize
if [[ $(pgrep -c $PROCESS) -eq 0 ]]; then
# Check if mariadb is setup
if [ ! -d "/var/lib/mysql/mysql/" ]; then
echo "Installing mariadb" | tee -a "$LOG_FILE";
/usr/bin/mysql_install_db >> "$LOG_FILE"
chown -R mysql:mysql /var/log/mariadb/
fi
if [[ $PRINT_STATUS == "-p" ]]; then echo "Starting mysql..."; fi
/usr/bin/mysqld_safe --skip-syslog >> "$LOG_FILE" &
chown -R mysql:mysql /var/lib/mysql/ >> "$LOG_FILE"
echo "Attempting to start mariadb process..." | tee -a "$LOG_FILE";
fi
fi
}
# Basic check for marai db status, attempts restart if not running
check_mysql () {
PROCESS="mysqld"
source /etc/os-release
if [ $ID = "ubuntu" ]; then
PROCESS="mariadb"
fi
echo "Checking mysqld status..."
if [ $DB_SERVICE = true ]; then
systemctl is-active --quiet mariadb
if [[ $? -ne 0 ]]; then
echo "mariadb service not running , attempting to restart"
systemctl start mariadb
fi
else # No systemctl
if [[ $(pgrep -c $PROCESS ) -eq 0 ]]; then
echo "mariadb process not running , attempting to restart"
chown mysql:mysql /var/log/mariadb/mariadb.log >> "$LOG_FILE";
/usr/bin/mysqld_safe --skip-syslog >> "$LOG_FILE" &
fi
fi
if [ $DB_SERVICE = true ]; then
systemctl is-active --quiet mariadb
if [[ $? -eq 0 ]]; then
echo "mariadb service started" | tee -a "$LOG_FILE";
fi
else
# Wait for mysql to start before continuing.
count=1;
if [[ $PRINT_STATUS == "-p" ]]; then echo "Testing mysqld connection..."| tee -a "$LOG_FILE"; fi
until mysqladmin ping -h "localhost" --silent ; do
((count++))
if [[ $count -gt 20 ]]; then
break;
fi
sleep 1;
done
if [[ $count -gt 20 ]]; then
echo "Timed out waiting for Mariadb to respond" | tee -a "$LOG_FILE";
exit 1;
else
echo "Mariadb started" | tee -a "$LOG_FILE";
fi
fi
}
# Check for mysql root password , abort if not available
check_mysql_root () {
if [ -z $HIRS_MYSQL_ROOT_PWD ]; then
if [ ! -f /etc/hirs/aca/aca.properties ]; then
echo "aca.properties does not exist." | tee -a "$LOG_FILE";
else
source /etc/hirs/aca/aca.properties;
DB_ADMIN_PWD=$mysql_admin_password
fi
else #HIRS_MYSQL_ROOT_PWD set
DB_ADMIN_PWD=$HIRS_MYSQL_ROOT_PWD
fi
# Allow user to enter password if not using env variabel or file
if [ -z $DB_ADMIN_PWD ]; then
read -p "Enter mysql root password" DB_ADMIN_PWD
else
DB_ADMIN_PWD=$mysql_admin_password
fi
# Make sure root password is correct
$(mysql -u root -p$DB_ADMIN_PWD -e 'quit' &> /dev/null);
if [ $? -eq 0 ]; then
echo "root password verified" | tee -a "$LOG_FILE"
else
echo "MYSQL root password was not the default, not supplied, or was incorrect"
echo " please set the HIRS_MYSQL_ROOT_PWD system variable and retry."
echo " ********** ACA Mysql setup aborted ********" ;
exit 1;
fi
}
check_hirs_db_user () {
PRINT_STATUS=$1
HIRS_DB_USER_EXISTS="$(mysql -uroot --password=$DB_ADMIN_PWD -sse "SELECT EXISTS(SELECT 1 FROM mysql.user WHERE user = 'hirs_db')")"
if [[ $HIRS_DB_USER_EXISTS == "1" ]]; then
if [[ $PRINT_STATUS == "-p" ]];then echo " hirs_db user exists" | tee -a "$LOG_FILE"; fi;
else
if [[ $PRINT_STATUS == "-p" ]]; then echo " hirs_db user does not exist" | tee -a "$LOG_FILE"; fi;
fi
}
check_hirs_db () {
PRINT_STATUS=$1
HIRS_DB_EXISTS="$(mysql -uroot --password=$DB_ADMIN_PWD -e "SHOW DATABASES" | grep hirs_db)"
if [[ $HIRS_DB_EXISTS == "hirs_db" ]]; then
if [[ $PRINT_STATUS == "-p" ]];then echo " hirs_db database exists" | tee -a "$LOG_FILE"; fi;
else
if [[ $PRINT_STATUS == "-p" ]];then echo " hirs_db database does not exists" | tee -a "$LOG_FILE"; fi;
fi
}
check_db_cleared () {
$(mysql -u root -e 'quit' &> /dev/null);
if [ $? -eq 0 ]; then
echo " Empty Mysql root password verified" | tee -a "$LOG_FILE"
else
echo " Mysql Root password is not empty" | tee -a "$LOG_FILE";
fi
HIRS_DB_USER_EXISTS="$(mysql -uroot -sse "SELECT EXISTS(SELECT 1 FROM mysql.user WHERE user = 'hirs_db')")"
if [[ $HIRS_DB_USER_EXISTS == "1" ]]; then
echo " hirs_db user exists" | tee -a "$LOG_FILE";
else
echo " hirs_db user does not exist" | tee -a "$LOG_FILE";
fi
HIRS_DB_EXISTS=`mysql -uroot -e "SHOW DATABASES" | grep hirs_db`
if [[ $HIRS_DB_EXISTS == "1" ]]; then
echo " hirs_db databse exists" | tee -a "$LOG_FILE";
else
echo " hirs_db database does not exists" | tee -a "$LOG_FILE";
fi
}
clear_hirs_user () {
$(mysql -u root -e 'quit' &> /dev/null);
if [ $? -eq 0 ]; then
HIRS_DB_USER_EXISTS="$(mysql -uroot -sse "SELECT EXISTS(SELECT 1 FROM mysql.user WHERE user = 'hirs_db')")"
if [[ $HIRS_DB_USER_EXISTS == "1" ]]; then
mysql -u root --password=$DB_ADMIN_PWD -e "DROP USER 'hirs_db'@'localhost';"
echo "hirs_db user found and deleted"
fi
fi
}
clear_hirs_db () {
$(mysql -u root -e 'quit' &> /dev/null);
if [ $? -eq 0 ]; then
mysql -u root --password=$DB_ADMIN_PWD -e "DROP DATABASE IF EXISTS hirs_db;"
fi
}
wait_for_mysql () {
echo "Waiting for Mariadb..." | tee -a "$LOG_FILE";
count=0
until [ "mysqladmin ping -h localhost --silent" ] || [ "$count" -gt 20 ]; do
((count++))
sleep 1
done
if [[ $count -gt 20 ]]; then
echo "Timed out waiting for Mysqld to respond" | tee -a "$LOG_FILE";
else
echo "Mariadb started" | tee -a "$LOG_FILE";
fi
}
# restart maraidb
mysqld_reboot () {
# reboot mysql server
PROCESS="mysqld"
source /etc/os-release
if [ $ID = "ubuntu" ]; then
PROCESS="mariadb"
fi
echo "Restarting Mariadb ...." | tee -a "$LOG_FILE";
if [ $DB_SERVICE = true ]; then
echo "Shutting down and restarting mysql service" | tee -a "$LOG_FILE";
systemctl stop mariadb >> "$LOG_FILE";
sleep 2
systemctl start mariadb >> "$LOG_FILE";
else # No systemd
echo "Shutting down and restarting mysql process" | tee -a "$LOG_FILE";
mysql -u root --password=$DB_ADMIN_PWD -e "SHUTDOWN"
sleep 1
# Make sure mysql has stopped
if [[ $(pgrep -c $PROCESS) -ne 0 ]]; then
pkill $PROCESS
fi
chown mysql:mysql /var/log/mariadb/mariadb.log >> "$LOG_FILE";
/usr/bin/mysqld_safe --skip-syslog >> "$LOG_FILE" &
sleep 1
check_mysql
wait_for_mysql
fi
}