Michelle/nagios-plugin-check_galera_cluster
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Several improvements, security and speed (#3)

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This commit is contained in:
Claudio Kuenzler
2021-04-01 10:30:14 +02:00
committed by GitHub
parent 9669a033f6
commit cf3a33bf5a
1 changed files with 19 additions and 12 deletions
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check_galera_cluster
+19 -12
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@@ -2,8 +2,8 @@
PROGNAME=`basename $0` PROGNAME=`basename $0`
VERSION="Version 1.1.4" VERSION="Version 1.1.5"
AUTHOR="Guillaume Coré <fridim@onfi.re>, Ales Nosek <ales.nosek@gmail.com>, Staf Wagemakers <staf@wagemakers.be>" AUTHOR="Guillaume Coré <fridim@onfi.re>, Ales Nosek <ales.nosek@gmail.com>, Staf Wagemakers <staf@wagemakers.be>, Claudio Kuenzler <claudiokuenzler.com>"
ST_OK=0 ST_OK=0
ST_WR=1 ST_WR=1
@@ -22,7 +22,7 @@ print_version() {
print_help() { print_help() {
print_version $PROGNAME $VERSION print_version $PROGNAME $VERSION
echo "" echo ""
echo "$PROGNAME is a Nagios plugin to monitor Galera cluster status." echo "$PROGNAME is a monitoring plugin to monitor Galera cluster status."
echo "" echo ""
echo "$PROGNAME [-u USER] [-p PASSWORD] [-H HOST] [-P PORT] [-m file] [-w SIZE] [-c SIZE] [-s statefile] [-f FLOAT] [-0]" echo "$PROGNAME [-u USER] [-p PASSWORD] [-H HOST] [-P PORT] [-m file] [-w SIZE] [-c SIZE] [-s statefile] [-f FLOAT] [-0]"
echo "" echo ""
@@ -132,8 +132,9 @@ param_port=$(create_param -P "$port")
param_mysqluser=$(create_param -u "$mysqluser") param_mysqluser=$(create_param -u "$mysqluser")
param_password=$(create_param -p "$password") param_password=$(create_param -p "$password")
param_configfile=$(create_param --defaults-extra-file= "$myconfig") param_configfile=$(create_param --defaults-extra-file= "$myconfig")
export MYSQL_PWD=$password
param_mysql="$param_mysqlhost $param_port $param_mysqluser $param_password $param_configfile" param_mysql="$param_mysqlhost $param_port $param_mysqluser $param_configfile"
# #
# verify the database connection # verify the database connection
@@ -144,24 +145,30 @@ mysql $param_mysql -B -N -e '\s;' >/dev/null 2>&1 || {
exit $ST_CR exit $ST_CR
} }
#
# retrieve the mysql status
#
rMysqlStatus=$(mysql $param_mysql -B -N -e "show status like 'wsrep_%';")
# #
# verify that the node is part of a cluster # verify that the node is part of a cluster
# #
rClusterStateUuid=$(mysql $param_mysql -B -N -e "show status like 'wsrep_cluster_state_uuid'; "|cut -f 2) rClusterStateUuid=$(echo "$rMysqlStatus" | awk '/wsrep_cluster_state_uuid/ {print $2}')
if [ -z "$rClusterStateUuid" ]; then if [ -z "$rClusterStateUuid" ]; then
echo "CRITICAL: node is not part of a cluster" echo "CRITICAL: node is not part of a cluster"
exit $ST_CR exit $ST_CR
fi fi
rClusterSize=$(mysql $param_mysql -B -N -e "show status like 'wsrep_cluster_size'"|cut -f 2) rClusterSize=$(echo "$rMysqlStatus" | awk '/wsrep_cluster_size/ {print $2}')
rClusterStatus=$(mysql $param_mysql -B -N -e "show status like 'wsrep_cluster_status'"|cut -f 2) # Primary rClusterStatus=$(echo "$rMysqlStatus" | awk '/wsrep_cluster_status/ {print $2}') # Primary
rFlowControl=$(mysql $param_mysql -B -N -e "show status like 'wsrep_flow_control_paused'"|cut -f 2) # < 0.1 rFlowControl=$(echo "$rMysqlStatus" | awk '/wsrep_flow_control_paused\t/ {print $2}') # < 0.1
rReady=$(mysql $param_mysql -B -N -e "show status like 'wsrep_ready'"|cut -f 2) # ON rReady=$(echo "$rMysqlStatus" | awk '/wsrep_ready/ {print $2}') # ON
rConnected=$(mysql $param_mysql -B -N -e "show status like 'wsrep_connected'"|cut -f 2) # ON rConnected=$(echo "$rMysqlStatus" | awk '/wsrep_connected/ {print $2}') # ON
rLocalStateComment=$(mysql $param_mysql -B -N -e "show status like 'wsrep_local_state_comment'"|cut -f 2) # Synced rLocalStateComment=$(echo "$rMysqlStatus" | awk '/wsrep_local_state_comment/ {print $2}') # Synced
rIncommingAddresses=$(mysql $param_mysql -B -N -e "show global status like 'wsrep_incoming_addresses';"|cut -f 2) rIncommingAddresses=$(echo "$rMysqlStatus" | awk '/wsrep_incoming_addresses/ {print $2}')
if [ -z "$rFlowControl" ]; then if [ -z "$rFlowControl" ]; then
echo "UNKNOWN: wsrep_flow_control_paused is empty" echo "UNKNOWN: wsrep_flow_control_paused is empty"