healthcheck - ruggardize connection failed result

Narrow down the scope of healthcheck --connect failures to the mariadb client errors "Can't connect". May as well look at same @skip-networking system variable on TCP just in case. 28000 errors, per https://mariadb.com/kb/en/mariadb-error-code-reference/ are client errors after a connection, indicating that the start of a tcp connection occured. Tested by hacking the entrypoint: + echo -e "[mariadb-clie" > "$DATADIR"/.my-healthcheck.cnf + sleep 3 umask 0077 - echo -e "[mariadb-client]\\nport=$PORT\\nsocket=$SOCKET\\nuser=healthcheck\\npassword=$healthCheckConnectPass\\n" > "$DATADIR"/.my-healthcheck.cnf + echo -e "[mariadb-client]\\nport=$PORT\\nsocket=$SOCKET\\nuser=healthcheck\\npassword=wrong$healthCheckConnectPass\\n" > "$DATADIR"/.my-healthcheck.cnf $maskPreserve + sleep 3
MariaDB · Sep 2, 2024 · ce0afb8 · ce0afb8
1 parent 2b6af7b
commit ce0afb8
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diff --git a/10.11-ubi/healthcheck.sh b/10.11-ubi/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/10.11/healthcheck.sh b/10.11/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/10.5/healthcheck.sh b/10.5/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mysql ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/10.6-ubi/healthcheck.sh b/10.6-ubi/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/10.6/healthcheck.sh b/10.6/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/11.1/healthcheck.sh b/11.1/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/11.2/healthcheck.sh b/11.2/healthcheck.sh
@@ -65,24 +65,31 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }
 

diff --git a/11.4-ubi/healthcheck.sh b/11.4-ubi/healthcheck.sh
@@ -66,25 +66,32 @@ connect()
 			return "$s";
 			;;
 	esac
-	# falling back to this if there wasn't a connection answer.
-	set +e +o pipefail
-	# (on second extra_file)
-	# shellcheck disable=SC2086
-	mariadb ${nodefaults:+--no-defaults} \
+	# falling back to tcp if there wasn't a connection answer.
+	s=$(mariadb ${nodefaults:+--no-defaults} \
 		${def['file']:+--defaults-file=${def['file']}} \
 		${def['extra_file']:+--defaults-extra-file=${def['extra_file']}}  \
 		${def['group_suffix']:+--defaults-group-suffix=${def['group_suffix']}}  \
 		--skip-ssl --skip-ssl-verify-server-cert \
-		-h localhost --protocol tcp -e 'select 1' 2>&1 \
-		| grep -qF "Can't connect"
-	local ret=${PIPESTATUS[1]}
-	set -eo pipefail
-	if (( "$ret" == 0 )); then
-		# grep Matched "Can't connect" so we fail
-		connect_s=1
-	else
-		connect_s=0
-	fi
+		-h localhost --protocol tcp -e 'select @@skip_networking' 2>&1)
+
+	case "$s" in
+		1)      # skip-networking=1 (no network)
+			;&
+		ERROR\ 2002\ \(HY000\):*)
+			# cannot connect
+			connect_s=1
+			;;
+		ERROR\ 1[0-9][0-9][0-9]\ \(28000\):*)
+			# grep access denied and other 28000 client errors - we did connect
+			;&
+		0)      # skip-networking=0
+			connect_s=0
+			;;
+		*)
+			>&2 echo "Unknown error $s"
+			connect_s=1
+			;;
+	esac
 	return $connect_s
 }