database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

Add support for systemd service notifications

Browse Source 
Insert sd_notify() calls at server start and stop for integration with
systemd.  This allows the use of systemd service units of type "notify",
which greatly simplifies the systemd configuration.

Reviewed-by: Pavel Stěhule <pavel.stehule@gmail.com>
This commit is contained in:
Peter Eisentraut
2015-11-17 06:46:17 -05:00
parent ac7238dc0f
commit 7d17e683fc
8 changed files with 147 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/Makefile.global.in
View File

@ -184,6 +184,7 @@ with_python = @with_python@
with_tcl = @with_tcl@
with_openssl = @with_openssl@
with_selinux = @with_selinux@
with_systemd = @with_systemd@
with_libxml = @with_libxml@
with_libxslt = @with_libxslt@
with_system_tzdata = @with_system_tzdata@

4
src/backend/Makefile
View File

@ -45,6 +45,10 @@ LIBS := $(filter-out -lpgport -lpgcommon, $(LIBS)) $(LDAP_LIBS_BE)
# The backend doesn't need everything that's in LIBS, however
LIBS := $(filter-out -lz -lreadline -ledit -ltermcap -lncurses -lcurses, $(LIBS))
ifeq ($(with_systemd),yes)
LIBS += -lsystemd
endif
##########################################################################
all: submake-libpgport submake-schemapg postgres $(POSTGRES_IMP)

26
src/backend/postmaster/postmaster.c
View File

@ -87,6 +87,10 @@
#include <dns_sd.h>
#endif
#ifdef USE_SYSTEMD
#include <systemd/sd-daemon.h>
#endif
#ifdef HAVE_PTHREAD_IS_THREADED_NP
#include <pthread.h>
#endif
@ -2533,6 +2537,9 @@ pmdie(SIGNAL_ARGS)
Shutdown = SmartShutdown;
ereport(LOG,
(errmsg("received smart shutdown request")));
#ifdef USE_SYSTEMD
sd_notify(0, "STOPPING=1");
#endif
if (pmState == PM_RUN || pmState == PM_RECOVERY ||
pmState == PM_HOT_STANDBY || pmState == PM_STARTUP)
@ -2585,6 +2592,9 @@ pmdie(SIGNAL_ARGS)
Shutdown = FastShutdown;
ereport(LOG,
(errmsg("received fast shutdown request")));
#ifdef USE_SYSTEMD
sd_notify(0, "STOPPING=1");
#endif
if (StartupPID != 0)
signal_child(StartupPID, SIGTERM);
@ -2645,6 +2655,9 @@ pmdie(SIGNAL_ARGS)
Shutdown = ImmediateShutdown;
ereport(LOG,
(errmsg("received immediate shutdown request")));
#ifdef USE_SYSTEMD
sd_notify(0, "STOPPING=1");
#endif
TerminateChildren(SIGQUIT);
pmState = PM_WAIT_BACKENDS;
@ -2787,6 +2800,10 @@ reaper(SIGNAL_ARGS)
ereport(LOG,
(errmsg("database system is ready to accept connections")));
#ifdef USE_SYSTEMD
sd_notify(0, "READY=1");
#endif
continue;
}
@ -4916,6 +4933,11 @@ sigusr1_handler(SIGNAL_ARGS)
if (XLogArchivingAlways())
PgArchPID = pgarch_start();
#ifdef USE_SYSTEMD
if (!EnableHotStandby)
sd_notify(0, "READY=1");
#endif
pmState = PM_RECOVERY;
}
if (CheckPostmasterSignal(PMSIGNAL_BEGIN_HOT_STANDBY) &&
@ -4930,6 +4952,10 @@ sigusr1_handler(SIGNAL_ARGS)
ereport(LOG,
(errmsg("database system is ready to accept read only connections")));
#ifdef USE_SYSTEMD
sd_notify(0, "READY=1");
#endif
pmState = PM_HOT_STANDBY;
/* Some workers may be scheduled to start now */
StartWorkerNeeded = true;

3
src/include/pg_config.h.in
View File

@ -833,6 +833,9 @@
/* Define to 1 to use Intel SSSE 4.2 CRC instructions with a runtime check. */
#undef USE_SSE42_CRC32C_WITH_RUNTIME_CHECK
/* Define to build with systemd support. (--with-systemd) */
#undef USE_SYSTEMD
/* Define to select SysV-style semaphores. */
#undef USE_SYSV_SEMAPHORES