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Feature: Support reading ulimits for display on admin dashboard

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This commit is contained in:
Philipp Schafft 2021-10-31 10:03:56 +00:00
parent f104fd5551
commit e349279e79
2 changed files with 73 additions and 7 deletions
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2
configure.ac
View File

@ -99,6 +99,7 @@ AC_CHECK_HEADERS([sys/types.h])
AC_CHECK_HEADERS([sys/timeb.h])
AC_CHECK_HEADERS([sys/socket.h])
AC_CHECK_HEADERS([pwd.h grp.h])
AC_CHECK_HEADERS([sys/resource.h])
AC_C_BIGENDIAN
@ -119,6 +120,7 @@ AC_CHECK_FUNCS([setresgid])
AC_CHECK_FUNCS([localtime_r])
AC_CHECK_FUNCS([gettimeofday])
AC_CHECK_FUNCS([ftime])
AC_CHECK_FUNCS([getrlimit])
dnl Do not check for poll on Darwin, it is broken in some versions
AS_IF([test "${SYS}" != "darwin"], [

78
src/admin.c
View File

@ -23,6 +23,10 @@
#include <libxml/parser.h>
#include <libxml/tree.h>
#if HAVE_GETRLIMIT && HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#include "admin.h"
#include "compat.h"
#include "cfgfile.h"
@ -119,6 +123,12 @@
#define DEFAULT_HTML_REQUEST ""
#define BUILDM3U_RAW_REQUEST "buildm3u"
typedef enum {
ADMIN_DASHBOARD_STATUS_OK = 0,
ADMIN_DASHBOARD_STATUS_WARNING = 1,
ADMIN_DASHBOARD_STATUS_ERROR = 2
} admin_dashboard_status_t;
typedef struct {
const char *prefix;
size_t length;
@ -1428,12 +1438,52 @@ static void __reportxml_add_maintenance(reportxml_node_t *parent, reportxml_data
refobject_unref(incident);
}
static admin_dashboard_status_t command_dashboard__atbest(admin_dashboard_status_t a, admin_dashboard_status_t b)
{
if (a > b) {
return a;
} else {
return b;
}
}
#if HAVE_GETRLIMIT && HAVE_SYS_RESOURCE_H
static admin_dashboard_status_t command_dashboard__getrlimit(ice_config_t *config, reportxml_node_t *parent, reportxml_database_t *db)
{
admin_dashboard_status_t ret = ADMIN_DASHBOARD_STATUS_OK;
struct rlimit limit;
if (getrlimit(RLIMIT_NOFILE, &limit) == 0) {
if (limit.rlim_cur != RLIM_INFINITY && limit.rlim_cur != RLIM_SAVED_MAX && limit.rlim_cur != RLIM_SAVED_CUR) {
ICECAST_LOG_WARN("rlimit for NOFILE is %u", (unsigned int)limit.rlim_cur);
if (limit.rlim_cur < (unsigned int)(config->client_limit + config->source_limit * 3 + 24)) {
// We assume that we need one FD per client, at max three per source (e.g. for auth), and at max 24 additional for logfiles and similar.
// This is just an estimation.
__reportxml_add_maintenance(parent, db, "a93a842a-9664-43a9-b707-7f358066fe2b", "error", "Global client, and source limit is bigger than suitable for current open file limit.", NULL);
ret = command_dashboard__atbest(ret, ADMIN_DASHBOARD_STATUS_ERROR);
}
}
}
if (getrlimit(RLIMIT_CORE, &limit) == 0) {
if (limit.rlim_cur == 0) {
__reportxml_add_maintenance(parent, db, "fdbacc56-1150-4c79-b53a-43cc79046f40", "info", "Core files are disabled.", NULL);
} else {
__reportxml_add_maintenance(parent, db, "688bdebc-c190-4b5d-8764-3a050c48387a", "info", "Core files are enabled.", NULL);
}
}
return ret;
}
#endif
static void command_dashboard (client_t *client, source_t *source, admin_format_t response)
{
ice_config_t *config = config_get_config();
reportxml_t *report = client_get_reportxml("0aa76ea1-bf42-49d1-887e-ca95fb307dc4", NULL, NULL);
reportxml_node_t *reportnode = reportxml_get_node_by_type(report, REPORTXML_NODE_TYPE_REPORT, 0);
reportxml_node_t *incident = reportxml_get_node_by_type(report, REPORTXML_NODE_TYPE_INCIDENT, 0);
admin_dashboard_status_t status = ADMIN_DASHBOARD_STATUS_OK;
reportxml_node_t *resource;
reportxml_node_t *node;
int has_sources;
@ -1468,16 +1518,11 @@ static void command_dashboard (client_t *client, source_t *source, adm
refobject_unref(node);
if (config->config_problems || has_too_many_clients) {
reportxml_helper_add_value_enum(resource, "status", "red");
status = command_dashboard__atbest(status, ADMIN_DASHBOARD_STATUS_ERROR);
} else if (!has_sources || has_many_clients) {
reportxml_helper_add_value_enum(resource, "status", "yellow");
} else {
reportxml_helper_add_value_enum(resource, "status", "green");
status = command_dashboard__atbest(status, ADMIN_DASHBOARD_STATUS_WARNING);
}
reportxml_node_add_child(incident, resource);
refobject_unref(resource);
if (config->config_problems & CONFIG_PROBLEM_HOSTNAME)
__reportxml_add_maintenance(reportnode, config->reportxml_db, "c4f25c51-2720-4b38-a806-19ef024b5289", "warning", "Hostname is not set to anything useful in <hostname>.", NULL);
if (config->config_problems & CONFIG_PROBLEM_LOCATION)
@ -1502,6 +1547,25 @@ static void command_dashboard (client_t *client, source_t *source, adm
__reportxml_add_maintenance(reportnode, config->reportxml_db, "417ae59c-de19-4ed1-ade1-429c689f1152", "info", "More than 75% of the server's configured maximum clients are connected", NULL);
}
#if HAVE_GETRLIMIT && HAVE_SYS_RESOURCE_H
status = command_dashboard__atbest(status, command_dashboard__getrlimit(config, reportnode, config->reportxml_db));
#endif
switch (status) {
case ADMIN_DASHBOARD_STATUS_OK:
reportxml_helper_add_value_enum(resource, "status", "green");
break;
case ADMIN_DASHBOARD_STATUS_WARNING:
reportxml_helper_add_value_enum(resource, "status", "yellow");
break;
case ADMIN_DASHBOARD_STATUS_ERROR:
reportxml_helper_add_value_enum(resource, "status", "red");
break;
}
reportxml_node_add_child(incident, resource);
refobject_unref(resource);
refobject_unref(incident);
config_release_config();