check_ntp(_time): don't die on connect errors

connect errors may happen if clients check agains dual
stacked ipv4/6 ntp servers.

2 files changed, 10 insertions, 2 deletions

diff --git a/plugins/check_ntp.c b/plugins/check_ntp.c
index 7d18919..16be7c5 100644
--- a/plugins/check_ntp.c
+++ b/plugins/check_ntp.c
@@ -398,7 +398,11 @@ double offset_request(const char *host, int *status){
                         die(STATE_UNKNOWN, "can not create new socket");
                 }
                 if(connect(socklist[i], ai_tmp->ai_addr, ai_tmp->ai_addrlen)){
-                        die(STATE_UNKNOWN, "can't create socket connection");
+                        /* don't die here, because it is enough if there is one server
+                           answering in time. This also would break for dual ipv4/6 stacked
+                           ntp servers when the client only supports on of them.
+                         */
+                        DBG(printf("can't create socket connection on peer %i: %s\n", i, strerror(errno)));
                 } else {
                         ufds[i].fd=socklist[i];
                         ufds[i].events=POLLIN;
diff --git a/plugins/check_ntp_time.c b/plugins/check_ntp_time.c
index 86530fe..bbcaa0b 100644
--- a/plugins/check_ntp_time.c
+++ b/plugins/check_ntp_time.c
@@ -344,7 +344,11 @@ double offset_request(const char *host, int *status){
                         die(STATE_UNKNOWN, "can not create new socket");
                 }
                 if(connect(socklist[i], ai_tmp->ai_addr, ai_tmp->ai_addrlen)){
-                        die(STATE_UNKNOWN, "can't create socket connection");
+                        /* don't die here, because it is enough if there is one server
+                           answering in time. This also would break for dual ipv4/6 stacked
+                           ntp servers when the client only supports on of them.
+                         */
+                        DBG(printf("can't create socket connection on peer %i: %s\n", i, strerror(errno)));
                 } else {
                         ufds[i].fd=socklist[i];
                         ufds[i].events=POLLIN;