Repository error is generated while creating snapshot

Elastic Stack Elasticsearch
1

I have configured path.repo = ["/tata"] in elasticsearch.yml of both master and child node. My snapshot query looks like this.

PUT /_snapshot/my_backup
{
  "type": "fs",
  "settings": {
    "location": "/tata"
  }
}

But when I register a folder for a snapshot. I get the error.

{
  "error": {
    "root_cause": [
      {
        "type": "repository_verification_exception",
        "reason": "[my_backup] [[uo89wL8tTwyUDb89LUZxxg, 'RemoteTransportException[[node-1][100.97.22.29:9300][internal:admin/repository/verify]]; nested: RepositoryVerificationException[[my_backup] store location [/tata] is not accessible on the node [{node-1}{uo89wL8tTwyUDb89LUZxxg}{PtpAn9Q4QWCqHp2_VXQaGQ}{100.97.22.29}{100.97.22.29:9300}{ml.machine_memory=16692609024, xpack.installed=true, ml.max_open_jobs=20}]]; nested: AccessDeniedException[/tata/tests-Msfm88cJQVuyLlYvoPw6aA/data-uo89wL8tTwyUDb89LUZxxg.dat];']]"
      }
    ],
    "type": "repository_verification_exception",
    "reason": "[my_backup] [[uo89wL8tTwyUDb89LUZxxg, 'RemoteTransportException[[node-1][100.97.22.29:9300][internal:admin/repository/verify]]; nested: RepositoryVerificationException[[my_backup] store location [/tata] is not accessible on the node [{node-1}{uo89wL8tTwyUDb89LUZxxg}{PtpAn9Q4QWCqHp2_VXQaGQ}{100.97.22.29}{100.97.22.29:9300}{ml.machine_memory=16692609024, xpack.installed=true, ml.max_open_jobs=20}]]; nested: AccessDeniedException[/tata/tests-Msfm88cJQVuyLlYvoPw6aA/data-uo89wL8tTwyUDb89LUZxxg.dat];']]"
  },
  "status": 500
}

Th output of mount is given below
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
devtmpfs on /dev type devtmpfs (rw,nosuid,size=8135104k,nr_inodes=2033776,mode=755)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_prio,net_cls)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
configfs on /sys/kernel/config type configfs (rw,relatime)
/dev/mapper/vg_root-lv_root on / type ext4 (rw,relatime,data=ordered)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=36,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=12559)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda1 on /boot type ext4 (rw,relatime,data=ordered)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1630140k,mode=700,uid=1000,gid=1000)
tmpfs on /run/user/0 type tmpfs (rw,nosuid,nodev,relatime,size=1630140k,mode=700)
tmpfs on /run/user/1007 type tmpfs (rw,nosuid,nodev,relatime,size=1630140k,mode=700,uid=1007,gid=1008)
tmpfs on /run/user/1003 type tmpfs (rw,nosuid,nodev,relatime,size=1630140k,mode=700,uid=1003,gid=1004)
100.97.22.28:/tata on /tata type nfs4 (rw,relatime,vers=4.1,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=100.97.22.29,local_lock=none,addr=100.97.22.28)

I have mounted the tata folder in the nodes (Total no of nodes=2) as an nfs mount.
I have referred to thislink
I found the explanation confusing.
So, What can be the reason for this error
So how can I correct this error?

2

Does this help?

3

@David Turner Thanks for the reply. You mean that the snapshot directory in all the nodes should have the same userid and groupid of elasticsearch. As you said in my nodes the elasticsearch userid and group id are different. If so, Please tell me how can I proceed further in making the ids same ?

4

The answer very much depends on the details of your environment and isn't really something I can help you with here as it's outside of Elasticsearch's control, sorry. I would look to your OS documentation or a local sysadmin for help with this.

5

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