added mysql
Costa Tsaousis (ktsaou) committed
Oct 20, 2015 at 18:58 UTC
fd733ea4cea2ff476ace40ca278edd61e55cb79b
1 file changed
+153
charts.d/mysql.chart.sh
new
+153
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+#!/bin/sh
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+
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+# http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html
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+
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+mysql_cmd_opts=""
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+mysql_update_every=5
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+
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+mysql_get_stats() {
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+ mysql "${mysql_cmd_opts}" -s -e "show global status;"
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+}
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+
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+mysql_check() {
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+ # check once if the url works
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+ local x="$(mysql_get_stats | grep "^Connections[[:space:]]")"
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+ if [ ! $? -eq 0 -o -z "$x" ]
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+ then
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+ echo >&2 "mysql: cannot get global status. Please set mysql_cmd_opts='options' whatever needed to get connected to mysql server, in $confd/mysql.conf"
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+ return 1
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+ fi
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+
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+ return 0
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+}
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+
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+mysql_create() {
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+ # create the charts
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+ cat <<EOF
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+CHART mysql.bandwidth '' "mysql Bandwidth" "kilobits / sec" mysql '' area 20001 $mysql_update_every
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+DIMENSION Bytes_received in incremental 8 $((1024 * mysql_update_every))
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+DIMENSION Bytes_sent out incremental -8 $((1024 * mysql_update_every))
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+
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+CHART mysql.queries '' "mysql Queries" "queries / sec" mysql '' line 20002 $mysql_update_every
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+DIMENSION Queries queries incremental 1 $((1 * mysql_update_every))
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+DIMENSION Questions questions incremental 1 $((1 * mysql_update_every))
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+DIMENSION Slow_queries slow_queries incremental -1 $((1 * mysql_update_every))
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+
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+CHART mysql.operations '' "mysql Operations" "operations / sec" mysql '' line 20003 $mysql_update_every
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+DIMENSION Opened_tables opened_table incremental 1 $((1 * mysql_update_every))
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+DIMENSION Flush_commands flush incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_commit commit incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_delete delete incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_prepare prepare incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_first read_first incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_key read_key incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_next read_next incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_prev read_prev incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_rnd read_rnd incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_read_rnd_next read_rnd_next incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_rollback rollback incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_savepoint savepoint incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_savepoint_rollback savepoint_rollback incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_update update incremental 1 $((1 * mysql_update_every))
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+DIMENSION Handler_write write incremental 1 $((1 * mysql_update_every))
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+
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+CHART mysql.table_locks '' "mysql Tables Locks" "locks / sec" mysql '' line 20004 $mysql_update_every
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+DIMENSION Table_locks_immediate immediate incremental 1 $((1 * mysql_update_every))
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+DIMENSION Table_locks_waited waited incremental -1 $((1 * mysql_update_every))
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+
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+CHART mysql.select_issues '' "mysql Select Issues" "issues / sec" mysql '' line 20005 $mysql_update_every
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+DIMENSION Select_full_join full_join incremental 1 $((1 * mysql_update_every))
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+DIMENSION Select_full_range_join full_range_join incremental 1 $((1 * mysql_update_every))
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+DIMENSION Select_range range incremental 1 $((1 * mysql_update_every))
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+DIMENSION Select_range_check range_check incremental 1 $((1 * mysql_update_every))
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+DIMENSION Select_scan scan incremental 1 $((1 * mysql_update_every))
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+
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+CHART mysql.sort_issues '' "mysql Sort Issues" "issues / sec" mysql '' line 20006 $mysql_update_every
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+DIMENSION Sort_merge_passes merge_passes incremental 1 $((1 * mysql_update_every))
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+DIMENSION Sort_range range incremental 1 $((1 * mysql_update_every))
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+DIMENSION Sort_scan scan incremental 1 $((1 * mysql_update_every))
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+EOF
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+
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+ return 0
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+}
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+
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+
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+mysql_update() {
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+ # the first argument to this function is the microseconds since last update
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+ # pass this parameter to the BEGIN statement (see bellow).
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+
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+ # do all the work to collect / calculate the values
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+ # for each dimension
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+ # remember: KEEP IT SIMPLE AND SHORT
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+
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+ # 1. get the counters page from mysql
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+ # 2. sed to remove spaces; replace . with _; remove spaces around =; prepend each line with: local mysql_
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+ # 3. egrep lines starting with:
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+ # local mysql_client_http_ then one or more of these a-z 0-9 _ then = and one of more of 0-9
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+ # local mysql_server_all_ then one or more of these a-z 0-9 _ then = and one of more of 0-9
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+ # 4. then execute this as a script with the eval
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+ #
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+ # be very carefull with eval:
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+ # prepare the script and always grep at the end the lines that are usefull, so that
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+ # even if something goes wrong, no other code can be executed
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+
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+ eval "$(mysql_get_stats |\
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+ sed -e "s/[[:space:]]\+/ /g" -e "s/\./_/g" -e "s/^\([a-z0-9_]\+\)[[:space:]]\+\([0-9]\+\)$/local mysql_\1=\2/g" |\
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+ egrep "^local mysql_[a-zA-Z0-9_]+=[[:digit:]]+$")"
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+
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+ # write the result of the work.
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+ cat <<VALUESEOF
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+BEGIN mysql.bandwidth $1
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+SET Bytes_received = $mysql_Bytes_received
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+SET Bytes_sent = $mysql_Bytes_sent
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+END
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+
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+BEGIN mysql.queries $1
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+SET Queries = $mysql_Queries
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+SET Questions = $mysql_Questions
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+SET Slow_queries = $mysql_Slow_queries
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+END
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+
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+BEGIN mysql.operations $1
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+SET Opened_tables = $mysql_Opened_tables
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+SET Flush_commands = $mysql_Flush_commands
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+SET Handler_commit = $mysql_Handler_commit
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+SET Handler_delete = $mysql_Handler_delete
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+SET Handler_prepare = $mysql_Handler_prepare
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+SET Handler_read_first = $mysql_Handler_read_first
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+SET Handler_read_key = $mysql_Handler_read_key
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+SET Handler_read_next = $mysql_Handler_read_next
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+SET Handler_read_prev = $mysql_Handler_read_prev
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+SET Handler_read_rnd = $mysql_Handler_read_rnd
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+SET Handler_read_rnd_next = $mysql_Handler_read_rnd_next
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+SET Handler_rollback = $mysql_Handler_rollback
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+SET Handler_savepoint = $mysql_Handler_savepoint
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+SET Handler_savepoint_rollback = $mysql_Handler_savepoint_rollback
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+SET Handler_update = $mysql_Handler_update
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+SET Handler_write = $mysql_Handler_write
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+END
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+
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+BEGIN mysql.table_locks $1
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+SET Table_locks_immediate = $mysql_Table_locks_immediate
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+SET Table_locks_waited = $mysql_Table_locks_waited
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+END
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+
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+BEGIN mysql.select_issues $1
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+SET Select_full_join = $mysql_Select_full_join
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+SET Select_full_range_join = $mysql_Select_full_range_join
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+SET Select_range = $mysql_Select_range
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+SET Select_range_check = $mysql_Select_range_check
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+SET Select_scan = $mysql_Select_scan
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+END
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+
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+BEGIN mysql.sort_issues $1
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+SET Sort_merge_passes = $mysql_Sort_merge_passes
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+SET Sort_range = $mysql_Sort_range
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+SET Sort_scan = $mysql_Sort_scan
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+END
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+
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+VALUESEOF
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+
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+ return 0
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+}
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+