# add mongodb:metrics problem **URL:** \ **Category:** Percona Server for MongoDB\ **Created:** [August 1, 2018, 2:26am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484 "2018-08-01T02:26:32Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![hakim](https://avatars.discourse-cdn.com/v4/letter/h/97f17d/32.png) [@hakim](https://forums.percona.com/u/hakim)\ **Post date:** [August 1, 2018, 2:26am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484/1 "2018-08-01T02:26:32Z")
Hello everyone , i have a problem when i put the command “pmm-admin add mongodb” in a client , i receive this error message : > [@](#): > > [linux:metrics] OK, already monitoring this system. > [mongodb:metrics] cannot verify MongoDB connection with `/usr/local/percona/pmm-client/mongodb_exporter --test`: exit status 1: time=“2018-08-01T09:52:33+02:00” level=error msg=“Cannot connect to server using url localhost:27017: no reachable servers” source=“connection.go:84” > time=“2018-08-01T09:52:33+02:00” level=error msg=“Can’t connect to MongoDB: Cannot connect using uri: localhost:27017” source=“mongodb\_exporter.go:104” can anyone help me please ? just for your information , i am able with the same client to add mysql metrics without problems thanks ---
**Author:** ![hakim](https://avatars.discourse-cdn.com/v4/letter/h/97f17d/32.png) [@hakim](https://forums.percona.com/u/hakim)\ **Post date:** [August 13, 2018, 3:36am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484/2 "2018-08-13T03:36:24Z")
can anyone help me please ? ---
**Author:** ![lorraine.pocklington](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/lorraine.pocklington/32/37_2.png) [@lorraine.pocklington](https://forums.percona.com/u/lorraine.pocklington)\ **Post date:** [August 13, 2018, 5:09am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484/3 "2018-08-13T05:09:35Z")
What version of PMM are you running please? ---
**Author:** ![krissfr](https://avatars.discourse-cdn.com/v4/letter/k/c57346/32.png) [@krissfr](https://forums.percona.com/u/krissfr)\ **Post date:** [September 18, 2018, 5:49am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484/4 "2018-09-18T05:49:53Z")
Hi, i have the same issue with : Package: pmm-client Version: 1.14.1-1.jessie Regards, Krissfr ---
**Author:** ![IMP](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/imp/32/20213_2.png) [@IMP](https://forums.percona.com/u/IMP)\ **Post date:** [September 18, 2018, 6:49am UTC](https://forums.percona.com/t/add-mongodb-metrics-problem/6484/5 "2018-09-18T06:49:25Z")
Hello, could you please check if localhost on your host is resolved to 127.0.0.1 or ::1? You can use the following method to do that: ```auto $ ping localhost -c1 -n PING localhost(::1) 56 data bytes 64 bytes from ::1: icmp_seq=1 ttl=64 time=0.027 ms ``` Also, could you please check what is MongoDB bound to? ```auto # netstat -nlput | grep -i mongo tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 2511/mongod ``` If it listens on 0.0.0.0 (ipv4), and localhost resolvs to ::1 (ipv6), please explicitly specify 127.0.0.1: ```auto # pmm-admin add mongodb --uri 127.0.0.1:27017 ```