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emqx
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refactor(bin/emqx): check if node is already running with ps command

This commit is contained in:
Zaiming (Stone) Shi 2023-02-13 22:57:49 +01:00
parent ab63954ce7
commit 12199e7987
1 changed files with 17 additions and 14 deletions
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31
bin/emqx
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@ -453,9 +453,25 @@ if [ "$IS_ENTERPRISE" = 'yes' ]; then
CONF_KEYS+=( 'license.key' )
fi
## Find the running node from 'ps -ef'
## The primary grep pattern is $RUNNER_ROOT_DIR because one can start multiple nodes at the same time
# shellcheck disable=SC2009
PS_LINE="$(ps -ef | $GREP '[e]mqx' | $GREP -v -E '(remsh|nodetool)' | $GREP -oE "\-[r]oot ${RUNNER_ROOT_DIR}.*" || true)"
if [ -n "${PS_LINE}" ]; then
RUNNING_NODES_COUNT="$(echo -e "$PS_LINE" | wc -l)"
else
RUNNING_NODES_COUNT=0
fi
# Turn off debug as the ps output can be quite noisy
set +x
if [ "$IS_BOOT_COMMAND" = 'yes' ]; then
if [ "$RUNNING_NODES_COUNT" -gt 0 ] && [ "$COMMAND" != 'check_config' ]; then
tmp_nodename=$(echo -e "$PS_LINE" | $GREP -oE "\s\-s?name.*" | awk '{print $2}' || true)
echo "Node ${tmp_nodename} is already running!"
exit 1
fi
[ -f "$EMQX_ETC_DIR"/emqx.conf ] || die "emqx.conf is not found in $EMQX_ETC_DIR" 1
maybe_use_portable_dynlibs
if [ "${EMQX_BOOT_CONFIGS:-}" = '' ]; then
@ -486,14 +502,9 @@ else
# then update the config in the file to 'node.name = "emqx@local.net"', after this change,
# there would be no way stop the running node 'emqx@127.0.0.1', because 'emqx stop' command
# would try to stop the new node instead.
# * The primary grep pattern is $RUNNER_ROOT_DIR because one can start multiple nodes at the same time
# * The grep args like '[e]mqx' but not 'emqx' is to avoid greping the grep command itself
# * The running 'remsh' and 'nodetool' processes must be excluded
# shellcheck disable=SC2009
PS_LINE="$(ps -ef | $GREP '[e]mqx' | $GREP -v -E '(remsh|nodetool)' | $GREP -oE "\-[r]oot ${RUNNER_ROOT_DIR}.*" || true)"
[ "$DEBUG" -eq 1 ] && echo "EMQX processes: $PS_LINE"
running_nodes_count="$(echo -e "$PS_LINE" | wc -l)"
if [ "$running_nodes_count" -eq 1 ]; then
if [ "$RUNNING_NODES_COUNT" -eq 1 ]; then
## only one emqx node is running, get running args from 'ps -ef' output
tmp_nodename=$(echo -e "$PS_LINE" | $GREP -oE "\s\-s?name.*" | awk '{print $2}' || true)
tmp_cookie=$(echo -e "$PS_LINE" | $GREP -oE "\s\-setcookie.*" | awk '{print $2}' || true)
@ -936,10 +947,6 @@ cd "$RUNNER_ROOT_DIR"
case "${COMMAND}" in
start)
# Make sure a node IS not running
if relx_nodetool "ping" >/dev/null 2>&1; then
die "Node $NAME is already running!"
fi
maybe_warn_default_cookie
# this flag passes down to console mode
@ -1111,10 +1118,6 @@ case "${COMMAND}" in
if [ "${_EMQX_START_DAEMON_MODE:-}" = 1 ]; then
tr_log_to_env
else
# Make sure a node IS not running
if relx_nodetool "ping" >/dev/null 2>&1; then
die "Node $NAME is already running!"
fi
maybe_log_to_console
maybe_warn_default_cookie
fi