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我在AWS上使用集羣上的neo4j-enterprise-3.0.4，螺栓協議。我使用HAproxy來了解誰是主節點，誰是HA集羣中的從節點。Neo4j HA with Haproxy（Neo.ClientError.Transaction.TransactionNotFound）
這是我HAProxy的的設置haproxy.cfg
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
maxconn 256
defaults
log global
mode tcp
option tcplog
option dontlognull
timeout connect 30s
timeout client 2h
timeout server 2h
frontend http-in
bind *:81
acl write_method method POST DELETE PUT
acl write_hdr hdr_val(X-Write) eq 1
acl write_payload payload(0,0) -m reg -i CREATE|MERGE|SET|DELETE|REMOVE
acl tx_cypher_endpoint path_beg /db/data/transaction
http-request set-var(txn.tx_cypher_endpoint) bool(true) if tx_cypher_endpoint
use_backend neo4j-master if write_hdr
use_backend neo4j-master if tx_cypher_endpoint write_payload
use_backend neo4j-all if tx_cypher_endpoint
use_backend neo4j-master if write_method
default_backend neo4j-all
backend neo4j-all
option httpchk GET /db/manage/server/ha/available HTTP/1.0\r\nAuthorization:\ Basic\ [code]
acl tx_cypher_endpoint var(txn.tx_cypher_endpoint),bool
stick-table type integer size 1k expire 70s # slightly higher with org.neo4j.server.transaction.timeout
stick match path,word(4,/) if tx_cypher_endpoint
stick store-response hdr(Location),word(6,/) if tx_cypher_endpoint
server neo4j-1 192.0.0.250:7687 check port 7474
server neo4j-2 192.0.0.251:7687 check port 7474
server neo4j-3 192.0.0.252:7687 check port 7474
backend neo4j-master
option httpchk GET /db/manage/server/ha/master HTTP/1.0\r\nAuthorization:\ Basic\ [code]
server neo4j-1 192.0.0.250:7687 check port 7474
server neo4j-2 192.0.0.251:7687 check port 7474
server neo4j-3 192.0.0.252:7687 check port 7474
listen admin
bind *:82
mode http
stats enable
stats uri /haproxy?stats
stats realm Haproxy\ Statistics
stats auth admin:admin
有時我得到這個，當我想在瀏覽器
"errors": [
{
"code": "Neo.ClientError.Transaction.TransactionNotFound",
"message": "Unrecognized transaction id. Transaction may have timed out and been rolled back."
}
]
而且我這個HAProxy的配置試圖用暗號，但我仍然有一個同樣的問題。這是我第二HAProxy的haproxy.cfg
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
maxconn 256
defaults
log global
mode tcp
option tcplog
option dontlognull
timeout connect 30s
timeout client 2h
timeout server 2h
frontend http-in
bind *:81
acl write_method method POST DELETE PUT
acl write_hdr hdr_val(X-Write) eq 1
acl write_payload payload(0,0) -m reg -i CREATE|MERGE|SET|DELETE|REMOVE
acl tx_cypher_endpoint path_beg /db/data/transaction
http-request set-var(txn.tx_cypher_endpoint) bool(true) if tx_cypher_endpoint
use_backend neo4j-master if write_hdr
use_backend neo4j-master if tx_cypher_endpoint write_payload
use_backend neo4j-all if tx_cypher_endpoint
use_backend neo4j-master if write_method
default_backend neo4j-all
backend neo4j-all
option httpchk GET /db/manage/server/ha/master HTTP/1.0\r\nAuthorization:\ Basic\ [code]
acl tx_cypher_endpoint var(txn.tx_cypher_endpoint),bool
stick-table type integer size 1k expire 70s # slightly higher with org.neo4j.server.transaction.timeout
stick match path,word(4,/) if tx_cypher_endpoint
stick store-response hdr(Location),word(6,/) if tx_cypher_endpoint
server neo4j-1 192.0.0.250:7687 check port 7474
server neo4j-2 192.0.0.251:7687 check port 7474
server neo4j-3 192.0.0.252:7687 check port 7474
backend neo4j-master
option httpchk GET /db/manage/server/ha/slave HTTP/1.0\r\nAuthorization:\ Basic\ [code]
server neo4j-1 192.0.0.250:7687 check port 7474
server neo4j-2 192.0.0.251:7687 check port 7474
server neo4j-3 192.0.0.252:7687 check port 7474
listen admin
bind *:82
mode http
stats enable
stats uri /haproxy?stats
stats realm Haproxy\ Statistics
stats auth admin:admin
的設置，所以我不知道爲什麼會這樣。這是因爲HAproxy或AWS或螺栓。當我在http上切換協議時，一切正常，我沒有錯誤。
後端的Neo4j瀏覽器與模式HTTP和選項喜歡，最後服務器：
您可能想突出顯示兩種配置之間的差異。 –
@Frank Pavageau在第一個配置中，我使用後端neo4j-all 選項httpchk GET/db/manage/server/ha/available'，然後在第二個我使用'backend neo4j-all 選項httpchk GET/db /服務器/公頃/ master'的 – NKD