/* Daemon init sequence */
static void
start_check(void)
{
/* Initialize sub-system */
ipvs_start();
init_checkers_queue();
#ifdef _WITH_VRRP_
init_interface_queue();
kernel_netlink_init();
#endif
#ifdef _WITH_SNMP_
if (!reload && snmp)
check_snmp_agent_init();
#endif
/* Parse configuration file */
global_data = alloc_global_data();
check_data = alloc_check_data();
init_data(conf_file, check_init_keywords);
if (!check_data) {
stop_check();
return;
}
/* Post initializations */
log_message(LOG_INFO, "Configuration is using : %lu Bytes", mem_allocated);
/* SSL load static data & initialize common ctx context */
if (!init_ssl_ctx()) {
stop_check();
return;
}
/* Processing differential configuration parsing */
if (reload) {
clear_diff_services();
copy_srv_states();
}
/* Initialize IPVS topology */
if (!init_services()) {
stop_check();
return;
}
/* Dump configuration */
if (debug & 4) {
dump_global_data(global_data);
dump_check_data(check_data);
}
#ifdef _WITH_VRRP_
/* Initialize linkbeat */
init_interface_linkbeat();
#endif
/* Register checkers thread */
register_checkers_thread();
}
/* Daemon init sequence */
static void
start_check(void)
{
/* Initialize sub-system */
if (ipvs_start() != IPVS_SUCCESS) {
stop_check(KEEPALIVED_EXIT_FATAL);
return;
}
init_checkers_queue();
#ifdef _WITH_VRRP_
init_interface_queue();
kernel_netlink_init();
#endif
/* Parse configuration file */
global_data = alloc_global_data();
check_data = alloc_check_data();
if (!check_data)
stop_check(KEEPALIVED_EXIT_FATAL);
init_data(conf_file, check_init_keywords);
init_global_data(global_data);
/* Post initializations */
#ifdef _MEM_CHECK_
log_message(LOG_INFO, "Configuration is using : %zu Bytes", mem_allocated);
#endif
/* Remove any entries left over from previous invocation */
if (!reload && global_data->lvs_flush)
ipvs_flush_cmd();
#ifdef _WITH_SNMP_CHECKER_
if (!reload && global_data->enable_snmp_checker)
check_snmp_agent_init(global_data->snmp_socket);
#endif
/* SSL load static data & initialize common ctx context */
if (!init_ssl_ctx())
stop_check(KEEPALIVED_EXIT_FATAL);
/* fill 'vsg' members of the virtual_server_t structure.
* We must do that after parsing config, because
* vs and vsg declarations may appear in any order
*/
link_vsg_to_vs();
/* Set the process priority and non swappable if configured */
if (global_data->checker_process_priority)
set_process_priority(global_data->checker_process_priority);
if (global_data->checker_no_swap)
set_process_dont_swap(4096); /* guess a stack size to reserve */
/* Processing differential configuration parsing */
if (reload)
clear_diff_services();
/* Initialize IPVS topology */
if (!init_services())
stop_check(KEEPALIVED_EXIT_FATAL);
/* Dump configuration */
if (__test_bit(DUMP_CONF_BIT, &debug)) {
dump_global_data(global_data);
dump_check_data(check_data);
}
#ifdef _WITH_VRRP_
/* Initialize linkbeat */
init_interface_linkbeat();
#endif
/* Register checkers thread */
register_checkers_thread();
}
/* Register CHECK thread */
int
start_check_child(void)
{
#ifndef _DEBUG_
pid_t pid;
int ret;
char *syslog_ident;
/* Initialize child process */
pid = fork();
if (pid < 0) {
log_message(LOG_INFO, "Healthcheck child process: fork error(%s)"
, strerror(errno));
return -1;
} else if (pid) {
checkers_child = pid;
log_message(LOG_INFO, "Starting Healthcheck child process, pid=%d"
, pid);
/* Start respawning thread */
thread_add_child(master, check_respawn_thread, NULL,
pid, RESPAWN_TIMER);
return 0;
}
if ((instance_name
#if HAVE_DECL_CLONE_NEWNET
|| network_namespace
#endif
) &&
(check_syslog_ident = make_syslog_ident(PROG_CHECK)))
syslog_ident = check_syslog_ident;
else
syslog_ident = PROG_CHECK;
/* Opening local CHECK syslog channel */
openlog(syslog_ident, LOG_PID | ((__test_bit(LOG_CONSOLE_BIT, &debug)) ? LOG_CONS : 0)
, (log_facility==LOG_DAEMON) ? LOG_LOCAL2 : log_facility);
#ifdef _MEM_CHECK_
mem_log_init(PROG_CHECK, "Healthcheck child process");
#endif
free_parent_mallocs_startup(true);
/* Child process part, write pidfile */
if (!pidfile_write(checkers_pidfile, getpid())) {
log_message(LOG_INFO, "Healthcheck child process: cannot write pidfile");
exit(KEEPALIVED_EXIT_FATAL);
}
/* Create the new master thread */
signal_handler_destroy();
thread_destroy_master(master); /* This destroys any residual settings from the parent */
master = thread_make_master();
/* change to / dir */
ret = chdir("/");
if (ret < 0) {
log_message(LOG_INFO, "Healthcheck child process: error chdir");
}
/* Set mask */
umask(0);
#endif
/* If last process died during a reload, we can get there and we
* don't want to loop again, because we're not reloading anymore.
*/
UNSET_RELOAD;
/* Signal handling initialization */
check_signal_init();
/* Start Healthcheck daemon */
start_check();
/* Launch the scheduling I/O multiplexer */
launch_scheduler();
/* Finish healthchecker daemon process */
stop_check(EXIT_SUCCESS);
/* unreachable */
exit(EXIT_SUCCESS);
}
/* Daemon init sequence */
static void
start_check(void)
{
/* Initialize sub-system */
if (ipvs_start() != IPVS_SUCCESS) {
stop_check();
return;
}
init_checkers_queue();
#ifdef _WITH_VRRP_
init_interface_queue();
kernel_netlink_init();
#endif
#ifdef _WITH_SNMP_
if (!reload && snmp)
check_snmp_agent_init(snmp_socket);
#endif
/* Parse configuration file */
global_data = alloc_global_data();
check_data = alloc_check_data();
init_data(conf_file, check_init_keywords);
if (!check_data) {
stop_check();
return;
}
init_global_data(global_data);
/* Post initializations */
#ifdef _DEBUG_
log_message(LOG_INFO, "Configuration is using : %lu Bytes", mem_allocated);
#endif
/* SSL load static data & initialize common ctx context */
if (!init_ssl_ctx()) {
stop_check();
return;
}
/* fill 'vsg' members of the virtual_server_t structure.
* We must do that after parsing config, because
* vs and vsg declarations may appear in any order
*/
link_vsg_to_vs();
/* Processing differential configuration parsing */
if (reload)
clear_diff_services();
/* Initialize IPVS topology */
if (!init_services()) {
stop_check();
return;
}
/* Dump configuration */
if (__test_bit(DUMP_CONF_BIT, &debug)) {
dump_global_data(global_data);
dump_check_data(check_data);
}
#ifdef _WITH_VRRP_
/* Initialize linkbeat */
init_interface_linkbeat();
#endif
/* Register checkers thread */
register_checkers_thread();
}
/* Register CHECK thread */
int
start_check_child(void)
{
#ifndef _DEBUG_
pid_t pid;
int ret;
/* Initialize child process */
pid = fork();
if (pid < 0) {
log_message(LOG_INFO, "Healthcheck child process: fork error(%s)"
, strerror(errno));
return -1;
} else if (pid) {
checkers_child = pid;
log_message(LOG_INFO, "Starting Healthcheck child process, pid=%d"
, pid);
/* Start respawning thread */
thread_add_child(master, check_respawn_thread, NULL,
pid, RESPAWN_TIMER);
return 0;
}
/* Opening local CHECK syslog channel */
openlog(PROG_CHECK, LOG_PID | ((__test_bit(LOG_CONSOLE_BIT, &debug)) ? LOG_CONS : 0)
, (log_facility==LOG_DAEMON) ? LOG_LOCAL2 : log_facility);
/* Child process part, write pidfile */
if (!pidfile_write(checkers_pidfile, getpid())) {
log_message(LOG_INFO, "Healthcheck child process: cannot write pidfile");
exit(0);
}
/* Create the new master thread */
signal_handler_destroy();
thread_destroy_master(master);
master = thread_make_master();
/* change to / dir */
ret = chdir("/");
if (ret < 0) {
log_message(LOG_INFO, "Healthcheck child process: error chdir");
}
/* Set mask */
umask(0);
#endif
/* If last process died during a reload, we can get there and we
* don't want to loop again, because we're not reloading anymore.
*/
UNSET_RELOAD;
/* Signal handling initialization */
check_signal_init();
/* Start Healthcheck daemon */
start_check();
/* Launch the scheduling I/O multiplexer */
launch_scheduler();
/* Finish healthchecker daemon process */
stop_check();
exit(0);
}
