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我在AWS上使用集群上的neo4j-enterprise-3.0.4，螺栓协议。我使用HAproxy来了解谁是主节点，谁是HA集群中的从节点。Neo4j HA with Haproxy（Neo.ClientError.Transaction.TransactionNotFound）
这是我HAProxy的的设置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
有时我得到这个，当我想在浏览器
"errors": [
{
"code": "Neo.ClientError.Transaction.TransactionNotFound",
"message": "Unrecognized transaction id. Transaction may have timed out and been rolled back."
}
]
而且我这个HAProxy的配置试图用暗号，但我仍然有一个同样的问题。这是我第二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
的设置，所以我不知道为什么会这样。这是因为HAproxy或AWS或螺栓。当我在http上切换协议时，一切正常，我没有错误。
后端的Neo4j浏览器与模式HTTP和选项喜欢，最后服务器：
您可能想突出显示两种配置之间的差异。 –
@Frank Pavageau在第一个配置中，我使用后端neo4j-all 选项httpchk GET/db/manage/server/ha/available'，然后在第二个我使用'backend neo4j-all 选项httpchk GET/db /服务器/公顷/ master'的 – NKD