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PT-2133 - added basic support for MongoDB to pt-stalk #163

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PT-2133 - added basic support for MongoDB to pt-stalk #163

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165 changes: 103 additions & 62 deletions bin/pt-stalk
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Original file line number Diff line number Diff line change
Expand Up @@ -786,61 +786,80 @@ CMD_SYSCTL="${CMD_SYSCTL:-"$(_which sysctl)"}"
CMD_TCPDUMP="${CMD_TCPDUMP:-"$(_which tcpdump)"}"
CMD_VMSTAT="${CMD_VMSTAT:-"$(_which vmstat)"}"
CMD_DMESG="${CMD_DMESG:-"$(_which dmesg)"}"
CMD_MONGO="${CMD_MONGO:-"$(_which mongo)"}"

[ -z "$CMD_SYSCTL" -a -x "/sbin/sysctl" ] && CMD_SYSCTL="/sbin/sysctl"

collect_mongo() {
local n=$1
$CMD_MONGO $EXT_ARGV --eval 'printjson(db.currentOp(true))' >> "$d/$p-currentOp$n"
$CMD_MONGO $EXT_ARGV --eval 'printjson(db.isMaster())' >> "$d/$p-isMaster$n"
$CMD_MONGO $EXT_ARGV --eval 'printjson(sh.status())' >> "$d/$p-shStatus$n"
$CMD_MONGO $EXT_ARGV --eval 'printjson(rs.status())' >> "$d/$p-rsStatus$n"
$CMD_MONGO $EXT_ARGV --eval 'printjson(db.serverStatus())' >> "$d/$p-serverStatus$n"
[ $n -eq 2 ] && $CMD_MONGO $EXT_ARGV --eval 'db.adminCommand({getLog:"*"})["names"].forEach(function (e,a,i){ db.adminCommand({getLog:e})["log"].forEach(function (e,a,i){print(e)})})' >> "$d/$p-logs" # We don't need to run this twice since it will be mostly duplicate lines, so we only run it the second time, which gives us the most log content
}

collect() {
local d="$1" # directory to save results in
local p="$2" # prefix for each result file

local mysqld_pid=$(_pidof mysqld | awk '{print $1; exit;}')

if [ "$CMD_PMAP" -a "$mysqld_pid" ]; then
if $CMD_PMAP --help 2>&1 | grep -- -x >/dev/null 2>&1 ; then
$CMD_PMAP -x $mysqld_pid > "$d/$p-pmap"
else
$CMD_PMAP $mysqld_pid > "$d/$p-pmap"
fi
fi

if [ "$CMD_GDB" -a "$OPT_COLLECT_GDB" -a "$mysqld_pid" ]; then
$CMD_GDB \
-ex "set pagination 0" \
-ex "thread apply all bt" \
--batch -p $mysqld_pid \
>> "$d/$p-stacktrace"
fi

$CMD_MYSQL $EXT_ARGV -e 'SHOW GLOBAL VARIABLES' >> "$d/$p-variables" &
sleep .2

local mysql_version="$(awk '/^version[^_]/{print substr($2,1,3)}' "$d/$p-variables")"

local mysql_error_log="$(awk '/^log_error/{print $2}' "$d/$p-variables")"
if [ -z "$mysql_error_log" -a "$mysqld_pid" ]; then
mysql_error_log="$(ls -l /proc/$mysqld_pid/fd | awk '/ 2 ->/{print $NF}')"
fi

local tail_error_log_pid=""
if [ "$mysql_error_log" ]; then
log "The MySQL error log seems to be $mysql_error_log"
tail -f "$mysql_error_log" >"$d/$p-log_error" &
tail_error_log_pid=$!

$CMD_MYSQLADMIN $EXT_ARGV debug
else
log "Could not find the MySQL error log"
fi

if [ "${mysql_version}" '>' "5.1" ]; then
local mutex="SHOW ENGINE INNODB MUTEX"
if [ "$OPT_MONGO" != "yes" ]; then
if [ "$CMD_PMAP" -a "$mysqld_pid" ]; then
if $CMD_PMAP --help 2>&1 | grep -- -x >/dev/null 2>&1 ; then
$CMD_PMAP -x $mysqld_pid > "$d/$p-pmap"
else
# Some pmap's apparently don't support -x (issue 116).
$CMD_PMAP $mysqld_pid > "$d/$p-pmap"
fi
fi

if [ "$CMD_GDB" -a "$OPT_COLLECT_GDB" -a "$mysqld_pid" ]; then
$CMD_GDB \
-ex "set pagination 0" \
-ex "thread apply all bt" \
--batch -p $mysqld_pid \
>> "$d/$p-stacktrace"
fi

$CMD_MYSQL $EXT_ARGV -e 'SHOW GLOBAL VARIABLES' >> "$d/$p-variables" &
sleep .2

local mysql_version="$(awk '/^version[^_]/{print substr($2,1,3)}' "$d/$p-variables")"

local mysql_error_log="$(awk '/^log_error/{print $2}' "$d/$p-variables")"
if [ -z "$mysql_error_log" -a "$mysqld_pid" ]; then
# Try getting it from the open filehandle...
mysql_error_log="$(ls -l /proc/$mysqld_pid/fd | awk '/ 2 ->/{print $NF}')"
fi

local tail_error_log_pid=""
if [ "$mysql_error_log" ]; then
log "The MySQL error log seems to be $mysql_error_log"
tail -f "$mysql_error_log" >"$d/$p-log_error" &
tail_error_log_pid=$!

# Send a mysqladmin debug to the server so we can potentially learn about
# locking etc.
$CMD_MYSQLADMIN $EXT_ARGV debug
else
log "Could not find the MySQL error log"
fi

if [ "${mysql_version}" '>' "5.1" ]; then
local mutex="SHOW ENGINE INNODB MUTEX"
else
local mutex="SHOW MUTEX STATUS"
fi
innodb_status 1
tokudb_status 1
$CMD_MYSQL $EXT_ARGV -e "$mutex" >> "$d/$p-mutex-status1" &
open_tables >> "$d/$p-opentables1" &
else
local mutex="SHOW MUTEX STATUS"
local mysqld_pid=$(_pidof mongod | awk '{print $1; exit;}')
fi
innodb_status 1
tokudb_status 1
$CMD_MYSQL $EXT_ARGV -e "$mutex" >> "$d/$p-mutex-status1" &
open_tables >> "$d/$p-opentables1" &

local tcpdump_pid=""
if [ "$CMD_TCPDUMP" -a "$OPT_COLLECT_TCPDUMP" ]; then
Expand Down Expand Up @@ -891,16 +910,19 @@ collect() {
$CMD_MPSTAT -P ALL $OPT_RUN_TIME 1 >> "$d/$p-mpstat-overall" &
fi

$CMD_MYSQLADMIN $EXT_ARGV ext -i$OPT_SLEEP_COLLECT -c$cnt >>"$d/$p-mysqladmin" &
local mysqladmin_pid=$!
if [ "$OPT_MONGO" != "yes" ]; then
$CMD_MYSQLADMIN $EXT_ARGV ext -i$OPT_SLEEP_COLLECT -c$cnt >>"$d/$p-mysqladmin" &
local mysqladmin_pid=$!

local have_lock_waits_table=""
$CMD_MYSQL $EXT_ARGV -e "SHOW TABLES FROM INFORMATION_SCHEMA" \
| grep -i "INNODB_LOCK_WAITS" >/dev/null 2>&1
if [ $? -eq 0 ]; then
have_lock_waits_table="yes"
local have_lock_waits_table=""
$CMD_MYSQL $EXT_ARGV -e "SHOW TABLES FROM INFORMATION_SCHEMA" \
| grep -i "INNODB_LOCK_WAITS" >/dev/null 2>&1
if [ $? -eq 0 ]; then
have_lock_waits_table="yes"
fi
fi

[ "$OPT_MONGO" == "yes" ] && collect_mongo 1 &
log "Loop start: $(date +'TS %s.%N %F %T')"
local start_time=$(date +'%s')
local curr_time=$start_time
Expand Down Expand Up @@ -939,11 +961,13 @@ collect() {
(echo $ts; df -k) >> "$d/$p-df" &
(echo $ts; netstat -antp) >> "$d/$p-netstat" &
(echo $ts; netstat -s) >> "$d/$p-netstat_s" &
(echo $ts; $CMD_MYSQL $EXT_ARGV -e "SHOW FULL PROCESSLIST\G") \
>> "$d/$p-processlist" &
if [ "$have_lock_waits_table" ]; then
(echo $ts; lock_waits) >>"$d/$p-lock-waits" &
(echo $ts; transactions) >>"$d/$p-transactions" &
if [ "$OPT_MONGO" != "yes" ]; then
(echo $ts; $CMD_MYSQL $EXT_ARGV -e "SHOW FULL PROCESSLIST\G") \
>> "$d/$p-processlist" &
if [ "$have_lock_waits_table" ]; then
(echo $ts; lock_waits) >>"$d/$p-lock-waits" &
(echo $ts; transactions) >>"$d/$p-transactions" &
fi
fi

curr_time=$(date +'%s')
Expand Down Expand Up @@ -986,13 +1010,17 @@ collect() {
[ "$mysqld_pid" ] && kill -s 18 $mysqld_pid
fi

innodb_status 2
tokudb_status 2
$CMD_MYSQL $EXT_ARGV -e "$mutex" >> "$d/$p-mutex-status2" &
open_tables >> "$d/$p-opentables2" &
if [ "$OPT_MONGO" != "yes" ]; then
innodb_status 2
tokudb_status 2
$CMD_MYSQL $EXT_ARGV -e "$mutex" >> "$d/$p-mutex-status2" &
open_tables >> "$d/$p-opentables2" &

kill $mysqladmin_pid
[ "$tail_error_log_pid" ] && kill $tail_error_log_pid
kill $mysqladmin_pid
[ "$tail_error_log_pid" ] && kill $tail_error_log_pid
else
collect_mongo 2 &
fi
[ "$tcpdump_pid" ] && kill $tcpdump_pid

hostname > "$d/$p-hostname"
Expand Down Expand Up @@ -1181,6 +1209,11 @@ set_trg_func() {
TRIGGER_FUNCTION="trg_plugin"
return 0 # success
else
# If --mongo is used, we only have one built-in function
if [ "$OPT_MONGO" == "yes" ]; then
TRIGGER_FUNCTION="trg_mongo_default"
return 0 # success
fi
# Trigger function is name of a built-in function.
func=$(echo "$func" | tr '[:upper:]' '[:lower:]')
if [ "$func" = "status" -o "$func" = "processlist" ]; then
Expand All @@ -1191,6 +1224,10 @@ set_trg_func() {
return 1 # error
}

trg_mongo_default() {
$CMD_MONGO --quiet --eval "db.currentOp()['inprog'].length"
}

trg_status() {
local var="$1"
mysqladmin $EXT_ARGV extended-status \
Expand Down Expand Up @@ -1889,6 +1926,10 @@ type: string
The pattern to use when watching SHOW PROCESSLIST. See L<"--function">
for details.

=item --mongo

Connect to a MongoDB/TokuMX instance instead of a MySQL one. Disables all the MySQL-related captures.

=item --notify-by-email

type: string
Expand Down
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