adyshimony commented on issue #796: CouchDB Error - No DB shards could be opened URL: https://github.com/apache/couchdb/issues/796#issuecomment-370187107 Hi, I have the same issue with 60 dbs, running on a local computer, each db has 4 views, up to 2 millions docs for every DB. only the last db is being updated. I am getting emfile error, and shard db error, and errors are changing according to the query range. Sometimes only one db returns error, sometimes multiple. https://gist.github.com/adyshimony/d5b9fec95a7ec7544095cef398960c5c I set up the config exactly as written here http://docs.couchdb.org/en/stable/maintenance/performance.html#system-resource-limits Checking ulimit -n returns 64000 Also set max_dbs_open is 15k Also added [couchdb] update_lru_on_read = false But when checking for service limits: ??beam.smp(1532)???couchjs(3546)???{couchjs}(3554) ? ??couchjs(3547)???{couchjs}(3555) ? ??couchjs(3548)???{couchjs}(3553) cat /proc/3546/limits I am getting Max open files 1024 For every process in the list, even that I configured this: /etc/systemd/system/couchdb.d/override.conf [Service] LimitNOFILE=64000. **OK solutions found, I am not delete this cause maybe it can help someone.** Add /etc/systemd/system/couchdb.service.d/limits.conf [Service] LimitNOFILE=64000 Fixed the issue with all the other things I mention above. /etc/systemd/system/couchdb.d/override.conf is not enough if working at all.
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