Curator question

Please, do we have to setup a curator on all nodes of the cluster (each node is on a server) ?

No. Only one instance is necessary, and it doesn’t have to be on a cluster node. It can be anywhere that has access to an http/https port in the cluster.

I don't know why Elasticsearch doesn't want to load :

[root@frghcslnetv12 ~]# systemctl status elasticsearch.service
● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2018-06-13 11:53:44 CEST; 10s ago
  Process: 24501 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/ --quiet (code=exited, status=1/FAILURE)
 Main PID: 24501 (code=exited, status=1/FAILURE)

Jun 13 11:53:42 frghcslnetv12 systemd[1]: Started Elasticsearch.
Jun 13 11:53:42 frghcslnetv12 systemd[1]: Starting Elasticsearch...
Jun 13 11:53:44 frghcslnetv12 systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Jun 13 11:53:44 frghcslnetv12 systemd[1]: Unit elasticsearch.service entered failed state.
Jun 13 11:53:44 frghcslnetv12 systemd[1]: elasticsearch.service failed.
[root@frghcslnetv12 elasticsearch]# df -k
Filesystem                1K-blocks     Used Available Use% Mounted on
/dev/mapper/vgroot-root    22132164  6197168  15934996  29% /
devtmpfs                    3980968        0   3980968   0% /dev
tmpfs                       3997156        0   3997156   0% /dev/shm
tmpfs                       3997156    12220   3984936   1% /run
tmpfs                       3997156        0   3997156   0% /sys/fs/cgroup
/dev/sda1                   1038336   212980    825356  21% /boot
/dev/mapper/vgdata-lvdata  50442784 47857392         0 100% /data
tmpfs                        799432        0    799432   0% /run/user/0

My data base is full , I use curator in the other node but it doesnt clear this node, can you help me ?

This could be for a couple of reasons.

  1. One of your indices is big enough that its shards overwhelmed one box.
  2. You had one or more nodes fail, and Elasticsearch tried to promote primaries on the remaining boxes, filling them.
  3. Your nodes are not (or are no longer) clustered properly (a split-brain scenario perhaps), so a delete to one node did not propagate across the entire cluster.
  4. Something I haven't listed here.

If you're full, there's not much I can do to help. You'll have to delete some or all of what's in the /data path. Hopefully you can restore from a snapshot.

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