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Check -x mysql, mysqladmin, and that MySQL is alive before starting.

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This commit is contained in:
Daniel Nichter
2011-12-08 14:26:10 -07:00
parent 3a9e586b72
commit 2c8021e7d6
1 changed files with 15 additions and 2 deletions
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17
bin/pt-stalk
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@@ -669,13 +669,13 @@ set_trg_func() {
trg_status() { trg_status() {
local var=$1 local var=$1
mysqladmin "$EXT_ARGV" extended-status | grep "$OPT_VARIABLE" | awk '{print $4}' mysqladmin $EXT_ARGV extended-status | grep "$OPT_VARIABLE" | awk '{print $4}'
} }
trg_processlist() { trg_processlist() {
local var=$1 local var=$1
local tmpfile="$TMPDIR/processlist" local tmpfile="$TMPDIR/processlist"
mysqladmin "$EXT_ARGV" processlist > $tmpfile-1 mysqladmin $EXT_ARGV processlist > $tmpfile-1
grep_processlist $tmpfile-1 $var $OPT_MATCH 0 0 > $tmpfile-2 grep_processlist $tmpfile-1 $var $OPT_MATCH 0 0 > $tmpfile-2
wc -l $tmpfile-2 | awk '{print $1}' wc -l $tmpfile-2 | awk '{print $1}'
rm -rf $tmpfile* rm -rf $tmpfile*
@@ -830,12 +830,25 @@ main() {
if [ "$(basename "$0")" = "pt-stalk" ] \ if [ "$(basename "$0")" = "pt-stalk" ] \
|| [ "$(basename "$0")" = "bash" -a "$_" = "$0" ]; then || [ "$(basename "$0")" = "bash" -a "$_" = "$0" ]; then
# Check that mysql and mysqladmin are in PATH. If not, we're
# already dead in the water, so don't bother with cmd line opts,
# just error and exit.
[ -n "$(mysql --help)" ] \
|| die "Cannot execute mysql. Check that it is in PATH."
[ -n "$(mysqladmin --help)" ] \
|| die "Cannot execute mysqladmin. Check that it is in PATH."
# Parse command line options. We must do this first so we can # Parse command line options. We must do this first so we can
# see if --daemonize was specified. # see if --daemonize was specified.
mk_tmpdir mk_tmpdir
parse_options $0 "$@" parse_options $0 "$@"
rm_tmpdir rm_tmpdir
# Now that we have the cmd line opts, check that we can actually
# connect to MySQL.
[ -n "$(mysql $EXT_ARGV -e 'SELECT 1')" ] \
|| die "Cannot connect to MySQL. Check that MySQL is running and that the options after -- are correct."
if [ "$OPT_DAEMONIZE" = "yes" ]; then if [ "$OPT_DAEMONIZE" = "yes" ]; then
# The PID file will at first have our (parent) PID. # The PID file will at first have our (parent) PID.
# This is fine for ensuring that only one of us is # This is fine for ensuring that only one of us is