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MINOR: server: Add 'no-agent-check' server keyword.

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This patch adds 'no-agent-check' setting supported both by 'default-server'
and 'server' directives to disable an agent check for a specific server which would
have 'agent-check' set as default value (inherited from 'default-server'
'agent-check' setting), or, on 'default-server' lines, to disable 'agent-check' setting
as default value for any further 'server' declarations.

For instance, provided this configuration:

    default-server agent-check
    server srv1
    server srv2 no-agent-check
    server srv3
    default-server no-agent-check
    server srv4

srv1 and srv3 would have an agent check enabled contrary to srv2 and srv4.

We do not allocate anymore anything when parsing 'default-server' 'agent-check'
setting.
This commit is contained in:
Frdric Lcaille 2017-03-21 16:39:15 +01:00 committed by Willy Tarreau
parent 2a0d061a60
commit 6e0843c0e0
3 changed files with 31 additions and 8 deletions
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1
include/types/server.h
View File

@ -241,6 +241,7 @@ struct server {
int tcp_ut; /* for TCP, user timeout */
int do_check; /* temporary variable used during parsing to denote if health checks must be enabled */
int do_agent; /* temporary variable used during parsing to denote if an auxiliary agent check must be enabled */
struct check check; /* health-check specific configuration */
struct check agent; /* agent specific configuration */

3
src/checks.c
View File

@ -3082,8 +3082,11 @@ const char *init_check(struct check *check, int type)
void free_check(struct check *check)
{
free(check->bi);
check->bi = NULL;
free(check->bo);
check->bo = NULL;
free(check->conn);
check->conn = NULL;
}
void email_alert_free(struct email_alert *alert)

35
src/server.c
View File

@ -262,6 +262,14 @@ static int srv_parse_addr(char **args, int *cur_arg,
return ERR_ALERT | ERR_FATAL;
}
/* Parse the "agent-check" server keyword */
static int srv_parse_agent_check(char **args, int *cur_arg,
struct proxy *curproxy, struct server *newsrv, char **err)
{
newsrv->do_agent = 1;
return 0;
}
/* Parse the "backup" server keyword */
static int srv_parse_backup(char **args, int *cur_arg,
struct proxy *curproxy, struct server *newsrv, char **err)
@ -401,6 +409,18 @@ static int srv_parse_namespace(char **args, int *cur_arg,
#endif
}
/* Parse the "no-agent-check" server keyword */
static int srv_parse_no_agent_check(char **args, int *cur_arg,
struct proxy *curproxy, struct server *newsrv, char **err)
{
free_check(&newsrv->agent);
newsrv->agent.inter = 0;
newsrv->agent.port = 0;
newsrv->agent.state &= ~CHK_ST_CONFIGURED & ~CHK_ST_ENABLED & ~CHK_ST_AGENT;
newsrv->do_agent = 0;
return 0;
}
/* Parse the "no-backup" server keyword */
static int srv_parse_no_backup(char **args, int *cur_arg,
struct proxy *curproxy, struct server *newsrv, char **err)
@ -1341,6 +1361,7 @@ void srv_compute_all_admin_states(struct proxy *px)
*/
static struct srv_kw_list srv_kws = { "ALL", { }, {
{ "addr", srv_parse_addr, 1, 1 }, /* IP address to send health to or to probe from agent-check */
{ "agent-check", srv_parse_agent_check, 0, 1 }, /* Enable an auxiliary agent check */
{ "backup", srv_parse_backup, 0, 1 }, /* Flag as backup server */
{ "check", srv_parse_check, 0, 1 }, /* enable health checks */
{ "check-send-proxy", srv_parse_check_send_proxy, 0, 1 }, /* enable PROXY protocol for health checks */
@ -1349,6 +1370,7 @@ static struct srv_kw_list srv_kws = { "ALL", { }, {
{ "enabled", srv_parse_enabled, 0, 1 }, /* Start the server in 'enabled' state */
{ "id", srv_parse_id, 1, 0 }, /* set id# of server */
{ "namespace", srv_parse_namespace, 1, 1 }, /* Namespace the server socket belongs to (if supported) */
{ "no-agent-check", srv_parse_no_agent_check, 0, 1 }, /* Do not enable any auxiliary agent check */
{ "no-backup", srv_parse_no_backup, 0, 1 }, /* Flag as non-backup server */
{ "no-check", srv_parse_no_check, 0, 1 }, /* disable health checks */
{ "no-check-send-proxy", srv_parse_no_check_send_proxy, 0, 1 }, /* disable PROXY protol for health checks */
@ -1569,7 +1591,7 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
if (!strcmp(args[0], "server") || !strcmp(args[0], "default-server")) { /* server address */
int cur_arg;
int do_agent = 0, defsrv = (*args[0] == 'd');
int defsrv = (*args[0] == 'd');
if (!defsrv && curproxy == defproxy) {
Alert("parsing [%s:%d] : '%s' not allowed in 'defaults' section.\n", file, linenum, args[0]);
@ -1619,7 +1641,6 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
LIST_INIT(&newsrv->priv_conns);
LIST_INIT(&newsrv->idle_conns);
LIST_INIT(&newsrv->safe_conns);
do_agent = 0;
newsrv->flags = 0;
newsrv->admin = 0;
newsrv->state = SRV_ST_RUNNING; /* early server setup */
@ -1746,6 +1767,7 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
/* Note: 'flags' field has potentially been already initialized. */
newsrv->flags |= curproxy->defsrv.flags;
newsrv->do_check = curproxy->defsrv.do_check;
newsrv->do_agent = curproxy->defsrv.do_agent;
if (newsrv->check.port)
newsrv->flags |= SRV_F_CHECKPORT;
newsrv->check.inter = curproxy->defsrv.check.inter;
@ -1832,11 +1854,7 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
}
while (*args[cur_arg]) {
if (!strcmp(args[cur_arg], "agent-check")) {
global.maxsock++;
do_agent = 1;
cur_arg += 1;
} else if (!strcmp(args[cur_arg], "agent-inter")) {
if (!strcmp(args[cur_arg], "agent-inter")) {
const char *err = parse_time_err(args[cur_arg + 1], &val, TIME_UNIT_MS);
if (err) {
Alert("parsing [%s:%d] : unexpected character '%c' in 'agent-inter' argument of server %s.\n",
@ -2322,7 +2340,7 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
global.maxsock++;
}
if (do_agent) {
if (!defsrv && newsrv->do_agent) {
const char *ret;
if (!newsrv->agent.port) {
@ -2343,6 +2361,7 @@ int parse_server(const char *file, int linenum, char **args, struct proxy *curpr
}
newsrv->agent.state |= CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT;
global.maxsock++;
}
if (!defsrv) {