I perform some research (maybe this help to find my problem):
i took a look on the Health Status with
**http://localhost:9200/_cluster/health?pretty**
the response is:
“cluster_name” : “elasticsearch”,
“status” : “yellow”,
“timed_out” : false,
“number_of_nodes” : 1,
“number_of_data_nodes” : 1,
“active_primary_shards” : 9,
“active_shards” : 9,
“relocating_shards” : 0,
“initializing_shards” : 0,
"unassigned_shards" : 9,
“delayed_unassigned_shards” : 0,
“number_of_pending_tasks” : 0,
“number_of_in_flight_fetch” : 0,
“task_max_waiting_in_queue_millis” : 0,
“active_shards_percent_as_number” : 50.0
so im not really an Expert (far away from it) but this looking like a Problem for me and after some googling i mean i should fix this (but no idea if this behaviour is the root of my Problem) …
so i found some Articles on Stackoverflow and tryed around:
first i try to delete this ‘shards’ (remember i got no idea what this should be):
List the shards with statuscode:
curl -XGET localhost:9200/_cat/shards?h=index,shards,state,prirep,unassigned.reason | grep UNASSIGNED zammad_production_ticket UNASSIGNED r CLUSTER_RECOVERED zammad_production_knowledge_base_translation UNASSIGNED r CLUSTER_RECOVERED zammad_production_chat_session UNASSIGNED r CLUSTER_RECOVERED zammad_production_knowledge_base_answer_translation UNASSIGNED r CLUSTER_RECOVERED zammad_production_stats_store UNASSIGNED r CLUSTER_RECOVERED zammad_production_cti_log UNASSIGNED r CLUSTER_RECOVERED zammad_production_user UNASSIGNED r CLUSTER_RECOVERED zammad_production_knowledge_base_category_translation UNASSIGNED r CLUSTER_RECOVERED zammad_production_organization UNASSIGNED r CLUSTER_RECOVERED
and deleted it like Leroy jenkins with:
curl -XGET http://localhost:9200/_cat/shards | grep UNASSIGNED | awk {‘print $1’} | xargs -i curl -XDELETE “http://localhost:9200/{}”
The health Status looking good now:
"cluster_name" : "elasticsearch", "status" : "green", "timed_out" : false, "number_of_nodes" : 1, "number_of_data_nodes" : 1, "active_primary_shards" : 0, "active_shards" : 0, "relocating_shards" : 0, "initializing_shards" : 0, "unassigned_shards" : 0, "delayed_unassigned_shards" : 0, "number_of_pending_tasks" : 0, "number_of_in_flight_fetch" : 0, "task_max_waiting_in_queue_millis" : 0, "active_shards_percent_as_number" : 100.0
but sadly nothing worked any more - i executed:
sudo zammad run rake searchindex:rebuild
and thanks God it working again but after that i still have the yellow Health State 
so i reasearching again and found a script from a Stackoverflow User that should relocate unassigned shards to nodes - reading good enought for me to try it out 
i modified the script to get it work and exec it…
Script:
`
!/usr/bin/env bash
The script performs force relocation of all unassigned shards,
of all indices to a specified node (NODE variable)
ES_HOST=“localhost”
NODE=“LWkomN95Q4Gwux2jwkk_lA”
curl ${ES_HOST}:9200/_cat/shards > shards
grep “UNASSIGNED” shards > unassigned_shards
while read LINE; do
IFS=" " read -r -a ARRAY <<< “$LINE”
INDEX=${ARRAY[0]}
SHARD=${ARRAY[1]}
echo “Relocating:”
echo “Index: ${INDEX}”
echo “Shard: ${SHARD}”
echo “To node: ${NODE}”
curl -H ‘Content-Type: application/json’ -s -XPOST “${ES_HOST}:9200/_cluster/reroute” -d “{
“commands”: [
{
“allocate_empty_primary”: {
“index”: “${INDEX}”,
“shard”: ${SHARD},
“node”: “${NODE}”,
“accept_data_loss”: true
}
}
]
}”; echo
echo “------------------------------”
done <unassigned_shards
rm shards
rm unassigned_shards
exit 0
`
the big brains here will knowing the ouput:
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1800 100 1800 0 0 75000 0 --:–:-- --:–:-- --:–:-- 78260
Relocating:
Index: zammad_production_knowledge_base_category_translation
Shard: 0
To node: LWkomN95Q4Gwux2jwkk_lA
{“error”:{“root_cause”:[{“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_knowledge_base_category_translation][0] is already assigned"}],“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_knowledge_base_category_translation][0] is already assigned"},“status”:400}
Relocating:
Index: zammad_production_ticket
Shard: 0
To node: LWkomN95Q4Gwux2jwkk_lA
{“error”:{“root_cause”:[{“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_ticket][0] is already assigned"}],“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_ticket][0] is already assigned"},“status”:400}
Relocating:
Index: zammad_production_knowledge_base_answer_translation
Shard: 0
To node: LWkomN95Q4Gwux2jwkk_lA
{“error”:{“root_cause”:[{“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_knowledge_base_answer_translation][0] is already assigned"}],“type”:“illegal_argument_exception”,“reason”:"[allocate_empty_primary] primary [zammad_production_knowledge_base_answer_translation][0] is already assigned"},“status”:400}
and so on…
Maybe im totaly wrong… anyone know the right direction?
Im going further and try to step by step deleting the not allocated shards and i figured out if i drop one specific (not allocated) shard the elasticsearch query get broken and working just after i rebuild the index:
after i curl -XDELETE ‘localhost:9200/zammad_production_knowledge_base_answer_translation"/’,
Zammad - Elasticsearch was broken…
see this Pastebin of my Step by Step deleting:
notice we just use the Knowledge Base (translated) and no more functions from zammad like Tickets etc.
found some more to try:
spx@wissensdatenbank:~$ curl -XGET -u elastic:test "localhost:9200/_cat/shards?v&h=index,shard,prirep,state,store,ip,unassigned.reason" index shard prirep state store ip unassigned.reason zammad_production_knowledge_base_translation 0 p STARTED 6kb 127.0.0.1 zammad_production_knowledge_base_translation 0 r UNASSIGNED INDEX_CREATED zammad_production_stats_store 0 p STARTED 208b 127.0.0.1 zammad_production_stats_store 0 r UNASSIGNED INDEX_CREATED zammad_production_knowledge_base_category_translation 0 p STARTED 11.3kb 127.0.0.1 zammad_production_knowledge_base_category_translation 0 r UNASSIGNED INDEX_CREATED zammad_production_organization 0 p STARTED 14.5kb 127.0.0.1 zammad_production_organization 0 r UNASSIGNED INDEX_CREATED zammad_production_cti_log 0 p STARTED 208b 127.0.0.1 zammad_production_cti_log 0 r UNASSIGNED INDEX_CREATED zammad_production_knowledge_base_answer_translation 0 p STARTED 578.1kb 127.0.0.1 zammad_production_knowledge_base_answer_translation 0 r UNASSIGNED INDEX_CREATED zammad_production_ticket 0 p STARTED 63.5kb 127.0.0.1 zammad_production_ticket 0 r UNASSIGNED INDEX_CREATED zammad_production_user 0 p STARTED 55kb 127.0.0.1 zammad_production_user 0 r UNASSIGNED INDEX_CREATED zammad_production_chat_session 0 p STARTED 208b 127.0.0.1 zammad_production_chat_session 0 r UNASSIGNED INDEX_CREATED