added galera fixup script

Author: techBeck03

siwapp-db.sh

@@ -1,7 +1,8 @@
 #!/bin/bash -x
 
-curl -o /tmp/provisioningVars.sh ${FILE_SERVER}/pod_${POD}_variables.sh
-. /tmp/provisioningVars.sh
+mkdir /usr/local/siwapp
+curl -o /usr/local/siwapp/provisioningVars.sh ${FILE_SERVER}/pod_${POD}_variables.sh
+. /usr/local/siwapp/provisioningVars.sh
 
 su -c "cat <<EOF > /etc/yum.repos.d/MariaDB.repo
 [mariadb]
@@ -234,3 +235,11 @@ else
         systemctl start mariadb
     fi
 fi
+
+mkdir /usr/share/systemd/siwapp
+wget ${FILE_SERVER}/siwapp-galera-fixup.sh -P /usr/share/systemd/siwapp
+mkdir  /usr/lib/systemd/system/mariadb.service.d
+cat > /usr/lib/systemd/system/mariadb.service.d/10-siwapp-edits.conf <<EOF
+[Service]
+ExecStartPre=/usr/bin/bash /usr/share/systemd/siwapp/siwapp-galera-fixup.sh
+EOF

siwapp-galera-fixup.sh

@@ -0,0 +1,41 @@
+#!/bin/bash -x
+
+. /usr/local/siwapp/provisioningVars.sh
+
+temp_ifs=${IFS}
+IFS=','
+dbHosts=(${DB_TIER_HOSTNAMES}) # Array of nodes in my tier.
+dbIps=(${DB_TIER_IPS}) # Array of IPs in my tier.
+master=${dbHosts[0]} # Let the first node in the service tier be the master.
+master_addr=${dbIps[0]} # Let the first node in the service tier be the master.
+
+IFS=${temp_ifs}
+
+if [ "${master}" == "${HOSTNAME}" ]; then
+    sed -i "s/safe_to_bootstrap.*/safe_to_bootstrap: 1/" /var/lib/mysql/grastate.dat
+    systemctl set-environment _WSREP_NEW_CLUSTER='--wsrep-new-cluster'
+
+else
+    echo  "Waiting for master node to be initialized..."
+    COUNT=0
+    MAX=50
+    SLEEP_TIME=5
+    ERR=0
+
+    # Keep checking for port 3306 on the master to be open
+    until $(mysql -h $master_addr -u root -p"${GALERA_DB_ROOT_PWD}" -e ""); do
+      sleep ${SLEEP_TIME}
+      let "COUNT++"
+      echo ${COUNT}
+      if [ ${COUNT} -gt ${MAX} ]; then
+        ERR=1
+        break
+      fi
+    done
+    if [ ${ERR} -ne 0 ]; then
+        echo "Failed to find port 3306 open on master node, so guessing something is wrong."
+        exit 1
+    else
+        echo "starting slave"
+    fi
+fi