@ -11,58 +11,66 @@ commandaction="Monitoring"
functionselfname = " $( basename " $( readlink -f " ${ BASH_SOURCE [0] } " ) " ) "
fn_firstcommand_set
fn__restart_server( ) {
if [ -f " ${ lockdir } / ${ selfname } .lock " ] ; then
alert = " ${ 1 : ? } } "
alert.sh
(
fn_print_info_nl "Restarting the server and skip immediate exit"
exitbypass = 1
command_stop.sh
command_start.sh
echo "" # start doesn't always print newline
)
fn_firstcommand_reset
else
fn_print_warn_nl "Skipping server restart because lockfile is missing, probably server is restarted during monitor execution."
fi
}
fn_monitor_check_lockfile( ) {
# Monitor does not run it lockfile is not found.
fn_print_dots "Checking lockfile"
# Monitor does not run if lockfile is not found.
if [ ! -f " ${ lockdir } / ${ selfname } .lock " ] ; then
fn_print_dots "Checking lockfile: "
fn_print_checking_eol
fn_script_log_info "Checking lockfile: CHECKING"
fn_print_error "Checking lockfile: No lockfile found: "
fn_print_error_eol_nl
fn_script_log_error "Checking lockfile: No lockfile found: ERROR"
echo -e " * Start ${ selfname } to run monitor. "
fn_print_fail_nl "Checking lockfile: No lockfile found"
exitcode = "3"
core_exit.sh
fi
# Fix if lockfile is not unix time or contains letters
if [ -f " ${ lockdir } / ${ selfname } .lock " ] && [ [ " $( head -n 1 " ${ lockdir } / ${ selfname } .lock " ) " = ~ [ A-Za-z] ] ] ; then
elif [ [ " $( head -n 1 " ${ lockdir } / ${ selfname } .lock " ) " = ~ [ A-Za-z] ] ] ; then
fn_print_warn_nl "Checking lockfile: fixing illegal lockfile"
date '+%s' > " ${ lockdir } / ${ selfname } .lock "
echo " ${ version } " >> " ${ lockdir } / ${ selfname } .lock "
echo " ${ port } " >> " ${ lockdir } / ${ selfname } .lock "
else
fn_print_ok_nl "Checking lockfile"
fi
}
fn_monitor_check_update( ) {
fn_print_dots "Checking active updates"
# Monitor will check if update is already running.
if [ " $( pgrep " ${ selfname } update " | wc -l) " != "0" ] ; then
fn_print_dots "Checking active updates: "
fn_print_checking_eol
fn_script_log_info "Checking active updates: CHECKING"
fn_print_error_nl "Checking active updates: SteamCMD is currently checking for updates: "
fn_print_error_eol
fn_script_log_error "Checking active updates: SteamCMD is currently checking for updates: ERROR"
fn_print_fail_nl "SteamCMD is currently checking for updates"
exitcode = "2"
core_exit.sh
else
fn_print_ok_nl "Checking active updates"
fi
}
fn_monitor_check_session( ) {
fn_print_dots "Checking session: "
fn_print_checking_eol
fn_script_log_info "Checking session: CHECKING"
fn_monitor_is_server_running( ) {
fn_print_dots "Checking session"
# uses status var from check_status.sh
if [ " ${ status } " != "0" ] ; then
fn_print_ok "Checking session: "
fn_print_ok_eol_nl
fn_script_log_pass "Checking session: OK"
fn_print_ok_nl "Checking session"
return 0
else
fn_print_error "Checking session: "
fn_print_fail_eol_nl
fn_script_log_fatal "Checking session: FAIL"
alert = "restart"
alert.sh
fn_script_log_info " Checking session: Monitor is restarting ${ selfname } "
command_restart.sh
core_exit.sh
fn_print_error_nl "Checking session"
return 1
fi
}
@ -81,6 +89,7 @@ fn_monitor_check_queryport() {
fi
core_exit.sh
fi
return 0
}
fn_query_gsquery( ) {
@ -92,48 +101,43 @@ fn_query_gsquery() {
}
fn_query_tcp( ) {
bash -c 'exec 3<> /dev/tcp/' ${ queryip } '/' ${ queryport } '' & 1
bash -c " exec 3<> '/dev/tcp/ ${ queryip } / ${ queryport } ' " & 1
querystatus = " $? "
}
fn_monitor_query( ) {
local fail_after = "60" # seconds
local time_per_attempt = "3"
local max_attempts = "5"
local wait_between_attempts = " $(( ( fail_after-max_attempts*time_per_attempt) / ( max_attempts-1) )) "
# Will loop and query up to 5 times every 15 seconds.
# Query will wait up to 60 seconds to confirm server is down as server can become non-responsive during map changes.
totalseconds = 0
for queryattempt in { 1..5} ; do
for queryattempt in $( seq 1 " ${ max_attempts } " ) ; do
for queryip in " ${ queryips [@] } " ; do
fn_print_dots " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : "
fn_print_querying_eol
fn_script_log_info " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ queryattempt } : QUERYING "
# querydelay
if [ " $( head -n 1 " ${ lockdir } / ${ selfname } .lock " ) " -gt " $( date "+%s" -d " ${ querydelay } mins ago " ) " ] ; then
fn_print_ok " Querying port: ${ querymethod } : ${ ip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : "
fn_print_delay_eol_nl
fn_script_log_info " Querying port: ${ querymethod } : ${ ip } : ${ queryport } : ${ queryattempt } : DELAY "
fn_script_log_info " Query bypassed: ${ gameservername } started less than ${ querydelay } minutes ago "
fn_script_log_info " Server started: $( date -d @$( head -n 1 " ${ lockdir } / ${ selfname } .lock " ) ) "
fn_script_log_info " Current time: $( date) "
monitorpass = 1
core_exit.sh
local log_msg = " Starting to query in mode \" ${ querymethod } \" to target \" ${ queryip } : ${ queryport } \" attempt ${ queryattempt } / ${ max_attempts } "
fn_print_dots " ${ log_msg } "
# will use query method selected in fn_monitor_loop
# gamedig
el if[ " ${ querymethod } " = = "gamedig" ] ; then
querystatus = "100"
if [ " ${ querymethod } " = = "gamedig" ] ; then
query_gamedig.sh
# gsquery
elif [ " ${ querymethod } " = = "gsquery" ] ; then
fn_query_gsquery
#tcp query
elif [ " ${ querymethod } " = = "tcp" ] ; then
fn_query_tcp
else
fn_print_fail_nl " ${ log_msg } reason: unhandled query method \" ${ querymethod } \" "
fi
# if serverquery is fine
if [ " ${ querystatus } " = = "0" ] ; then
# Server query OK.
fn_print_ok " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : "
fn_print_ok_eol_nl
fn_script_log_pass " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ queryattempt } : OK "
monitorpass = 1
if [ " ${ querystatus } " = = "0" ] ; then
fn_print_ok_nl " ${ log_msg } "
# Add query data to log.
if [ " ${ gdname } " ] ; then
fn_script_log_info " Server name: ${ gdname } "
@ -155,44 +159,68 @@ fn_monitor_query() {
if [ " ${ stats } " = = "on" ] || [ " ${ stats } " = = "y" ] ; then
info_stats.sh
fi
return 0
else
fn_print_warn_nl " ${ log_msg } querystatus=\" ${ querystatus } \" "
fi
core_exit.sh
done
# monitoring attempt failed, show details to resolve the issue:
if ! ss -tuplwn | grep -qFe " : ${ queryport } " ; then
fn_print_warn_nl " Port is not in use right now \" ${ queryport } \". Check command details for ports, use provided command to check if every port is used + console to validate server is booted. Maybe server didn't boot, e.g. a second port which is needed is already in use by another application or the configuration for the queryport is incorrect. "
else
# Server query FAIL.
fn_print_fail " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : "
fn_print_fail_eol
fn_script_log_warn " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ queryattempt } : FAIL "
# Monitor will try gamedig (if supported) for first 30s then gsquery before restarting.
# gsquery will fail if longer than 60s
if [ " ${ totalseconds } " -ge "59" ] ; then
# Monitor will FAIL if over 60s and trigger gane server reboot.
fn_print_fail " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : "
fn_print_fail_eol_nl
fn_script_log_warn " Querying port: ${ querymethod } : ${ queryip } : ${ queryport } : ${ queryattempt } : FAIL "
# Send alert if enabled.
alert = "restartquery"
alert.sh
command_restart.sh
fn_firstcommand_reset
core_exit.sh
# return value of following lines arent used so not an issue
#shellcheck disable=SC2155
local process_using_port = " $( ss -tuplwn " ( dport = : ${ queryport } or sport = : ${ queryport } ) " | grep -o '[^ ]*$' ) "
#shellcheck disable=SC2155
local listen_on = " $( ss -tuplwn " ( dport = : ${ queryport } or sport = : ${ queryport } ) " | grep -o " [^ ]*: ${ queryport } " ) "
local msg = " Found application \" ${ process_using_port } \" which listens on \" ${ listen_on } \" "
if ! ss -tuplwn " ( dport = : ${ queryport } or sport = : ${ queryport } ) " | grep -qs '^[^ ]*\s*[^ ]*\s*0\s*' ; then
fn_print_warn_nl " $msg but Recv-Q isn't empty. Server didn't read the message we send, e.g. server is booting, has an issue which prevents correct initialization or the port is in use by another program. "
else
fn_print_info_nl " $msg and Recv-Q is empty, the application read our send message but didn't answer as expected. Maybe \" ${ queryport } \" is not the querypot or incorrect query method (e.g. gamedig protocol) used? "
fi
fi
# delay next init
if [ " ${ queryattempt } " != " ${ max_attempts } " ] ; then
local explanation = "e.g. maybe it failed because of server starting / map change / workshop download"
fn_print_info " delayed next attempt for ${ wait_between_attempts } s, $explanation "
for i in $( seq 1 " ${ wait_between_attempts } " ) ; do
sleep 1s
fn_print_info " delayed next attempt for $(( wait_between_attempts - i)) s, $explanation "
done
# Second counter will wait for 15s before breaking loop.
for seconds in { 1..15} ; do
fn_print_fail " Querying port: ${ querymethod } : ${ ip } : ${ queryport } : ${ totalseconds } / ${ queryattempt } : ${ cyan } WAIT ${ default } "
sleep 0.5
totalseconds = $(( totalseconds + 1 ))
if [ " ${ seconds } " = = "15" ] ; then
break
fn_print_info_nl " monitoring delayed for ${ wait_between_attempts } s, $explanation "
fi
done
return 1
}
fn_monitor_await_execution_time( ) {
# Add a querydelay of 1 min if var missing.
querydelay = " ${ querydelay :- "1" } "
last_execution = " $( head -n 1 " ${ lockdir } / ${ selfname } .lock " ) "
delay_seconds = " $(( querydelay * 60 )) "
next_allowed_execution = " $(( last_execution + delay_seconds)) "
seconds_to_wait = " $(( next_allowed_execution - $( date '+%s' ) )) "
if [ " ${ seconds_to_wait } " -gt "0" ] ; then
fn_print_dots " monitoring delayed for ${ seconds_to_wait } s "
for i in $( seq " ${ seconds_to_wait } " -1 1) ; do
sleep 1s
fn_print_info " monitoring delayed for ${ i } s "
done
fn_print_info_nl " monitoring delayed for ${ seconds_to_wait } s "
fi
}
fn_monitor_loop( ) {
is_gamedig_installed = " $( command -v gamedig 2>/dev/null 1>& 2 && command -v jq 2>/dev/null 1>& 2 && echo true || echo false ) "
# loop though query methods selected by querymode.
totalseconds = 0
if [ " ${ querymode } " = = "2" ] ; then
local query_methods_array = ( gamedig gsquery)
elif [ " ${ querymode } " = = "3" ] ; then
@ -201,25 +229,22 @@ fn_monitor_loop() {
local query_methods_array = ( gsquery )
elif [ " ${ querymode } " = = "5" ] ; then
local query_methods_array = ( tcp )
else
fn_print_fail_nl " monitoring function invoced but querymode has an illegal value ${ querymode } "
return 1
fi
for querymethod in " ${ query_methods_array [@] } " ; do
# Will check if gamedig is installed and bypass if not.
if [ " ${ querymethod } " = = "gamedig" ] ; then
if [ " $( command -v gamedig 2> /dev/null) " ] && [ " $( command -v jq 2> /dev/null) " ] ; then
if [ -z " ${ monitorpass } " ] ; then
fn_monitor_query
fi
else
fn_script_log_info "gamedig is not installed"
fn_script_log_info "https://docs.linuxgsm.com/requirements/gamedig"
fi
else
# will not query if query already passed.
if [ -z " ${ monitorpass } " ] ; then
fn_monitor_query
fi
if [ " ${ querymethod } " = = "gamedig" ] && ! " ${ is_gamedig_installed } " ; then
fn_print_warn_nl "gamedig is not installed"
fn_print_warn_nl "https://docs.linuxgsm.com/requirements/gamedig"
elif fn_monitor_query; then
fn_print_complete_nl "monitoring successful"
return 0
fi
done
return 1
}
monitorflag = 1
@ -228,18 +253,31 @@ core_logs.sh
info_game.sh
# query pre-checks
fn_monitor_await_execution_time
fn_monitor_check_lockfile
fn_monitor_check_update
fn_monitor_check_session
# Monitor will not continue if session only check.
if [ " ${ querymode } " != "1" ] ; then
fn_monitor_check_queryport
check_only_if_running = " $( [ " ${ querymode } " = = "1" ] && echo true || echo false ) "
# Add a querydelay of 1 min if var missing.
if [ -z " ${ querydelay } " ] ; then
querydelay = "1"
fi
exitcode = "1" # if not altered below, coding error => FATAL
if ! fn_monitor_is_server_running; then
fn__restart_server "restart"
exitcode = "3"
# if monitor should only check only session
elif " ${ check_only_if_running } " ; then
exitcode = "0"
elif ! fn_monitor_is_queryport_valid; then
exitcode = "2" # error because maybe unfixable
# no restart because config issue !
fn_monitor_loop
# server could be queried with tcp / gsquery / gamedig
elif fn_monitor_loop; then
exitcode = "0"
else
fn__restart_server "restartquery"
exitcode = "3"
fi
core_exit.sh
jusito
2 years ago
GitHub