本文介绍了debezium/zookeeper端口2181已关闭的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个来自 https://hub.docker.com/r/debezium/zookeeper:1.2 图像和我的Compose文件的正在运行的Zookeeper实例:
I have a running Zookeeper instance from the https://hub.docker.com/r/debezium/zookeeper:1.2 image and my Compose file:
version: "3.7"
services:
zookeeper:
image: debezium/zookeeper:1.2
ports:
- "2181:2181"
- "2888:2888"
- "3888:3888"
networks:
common:
volumes:
- "~/dev/docker/projects/debezium/volumes/zookeeper/data:/zookeeper/data"
- "~/dev/docker/projects/debezium/volumes/zookeeper/txns:/zookeeper/txns"
- "~/dev/docker/projects/debezium/volumes/zookeeper/conf:/zookeeper/conf"
- "~/dev/docker/projects/debezium/volumes/zookeeper/logs:/zookeeper/logs"
environment:
HOST_USER_ID: ${CURRENT_UID}
HOST_GROUP_ID: ${CURRENT_GID}
deploy:
replicas: 1
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 10s
healthcheck:
test: curl --fail http://localhost:2181 || exit 1
interval: 1m
timeout: 3s
retries: 3
我可以看到Zookeeper服务器正常启动:
I can see the Zookeeper server start all right:
5f7860484b48 debezium/zookeeper:1.2 "/docker-entrypoint.…" About a minute ago Up About a minute (health
: starting) 2181/tcp, 2888/tcp, 3888/tcp, 8778/tcp, 9779/tcp debezium_zookeeper.1.hmdxswlsmqdebqkqvkjqzxnlc
，服务器日志显示:
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,032 - INFO [main:ContextHandler@825] - Started o.e.j.s.ServletContextHandler@3f197a46{/,null,AVAILABLE}
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,111 - INFO [main:AbstractConnector@330] - Started ServerConnector@4278a03f{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,112 - INFO [main:Server@399] - Started @5046ms
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,113 - INFO [main:JettyAdminServer@112] - Started AdminServer on address 0.0.0.0, port 8080 and command URL /commands
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,135 - INFO [main:ServerCnxnFactory@135] - Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,145 - INFO [main:NIOServerCnxnFactory@673] - Configuring NIO connection handler with 10s sessionless connection timeout, 1 selector thread(s), 8 worker threads, and 64 kB direct buffers.
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,150 - INFO [main:NIOServerCnxnFactory@686] - binding to port 0.0.0.0/0.0.0.0:2181
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,224 - INFO [main:ZKDatabase@117] - zookeeper.snapshotSizeFactor = 0.33
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,320 - INFO [main:FileSnap@83] - Reading snapshot /zookeeper/data/version-2/snapshot.0
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,340 - INFO [main:FileTxnSnapLog@404] - Snapshotting: 0x0 to /zookeeper/data/version-2/snapshot.0
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:45:15,408 - INFO [main:ContainerManager@64] - Using checkIntervalMs=60000 maxPerMinute=10000
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:46:10,244 - WARN [NIOWorkerThread-1:NIOServerCnxn@370] - Exception causing close of session 0x0: Len error 1195725856
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:47:10,884 - WARN [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of session 0x0: Len error 1195725856
debezium_zookeeper.1.j841dv1adeab@stephane-pc | 2020-10-12 08:48:12,599 - WARN [NIOWorkerThread-3:NIOServerCnxn@370] - Exception causing close of session 0x0: Len error 1195725856
但是我无法从主机连接到发布的端口:
But I can't connect to the published port from the host:
stephane@stephane-pc:~$ nmap -p 2181 localhost
Starting Nmap 7.80 ( https://nmap.org ) at 2020-10-12 10:50 CEST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00033s latency).
PORT STATE SERVICE
2181/tcp closed eforward
当然，该端口已在防火墙中启用:
Of course, the port is enabled in the firewall:
sudo ufw allow from any to any port 2181;
stephane@stephane-pc:~$ sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), deny (routed)
New profiles: skip
To Action From
-- ------ ----
8500 ALLOW IN 127.0.0.0
8500 ALLOW IN Anywhere
18630 ALLOW IN Anywhere
2181 ALLOW IN 127.0.0.0
2181 ALLOW IN Anywhere
9092 ALLOW IN Anywhere
8500 (v6) ALLOW IN Anywhere (v6)
18630 (v6) ALLOW IN Anywhere (v6)
2181 (v6) ALLOW IN Anywhere (v6)
9092 (v6) ALLOW IN Anywhere (v6)
我可以连接到正在运行的容器:
I can connect to the running container:
docker-exec debezium_zookeeper.1.app5h7goosa2cpn4g06azp2xt
并查看服务器状态:
[zookeeper@2f57d1a84ce7 ~]$ bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /zookeeper/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone
日志确实显示警告:
debezium_zookeeper.1.u0koxm2njw2i@stephane-pc | 2020-10-12 09:03:47,829 - WARN [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of session 0x0: Len error 1195725856
这似乎是已知问题.
这与我的封闭港口问题有关吗?
Could this be related to my closed port issue ?
更新:我还尝试将 hostname 属性作为 hostname:zookeeper 添加到Compose文件中，并在其中添加 127.0.1.1 zookeeper 条目/etc/hosts 文件，但是 nmap -p 2181 zookeeper 命令仍然显示为关闭端口.
UPDATE: I also tried adding a hostname property as hostname: zookeeper to the Compose file and add the 127.0.1.1 zookeeper entry in the /etc/hosts file, but the nmap -p 2181 zookeeper command still showed a closed port.
推荐答案
我不得不更改检查健康的方式.
I had to change the way I check for health.
healthcheck:
test: /zookeeper/bin/zkServer.sh print-cmd || exit 1
interval: 1m
timeout: 3s
retries: 3
start_period: 15s
完整的撰写文件:
version: "3.7"
services:
zookeeper:
image: debezium/zookeeper:1.2
ports:
- "2181:2181"
- "2888:2888"
- "3888:3888"
networks:
common:
volumes:
- "~/dev/docker/projects/debezium/volumes/zookeeper/data:/zookeeper/data"
- "~/dev/docker/projects/debezium/volumes/zookeeper/txns:/zookeeper/txns"
- "~/dev/docker/projects/debezium/volumes/zookeeper/conf:/zookeeper/conf"
- "~/dev/docker/projects/debezium/volumes/zookeeper/logs:/zookeeper/logs"
environment:
HOST_USER_ID: ${CURRENT_UID}
HOST_GROUP_ID: ${CURRENT_GID}
deploy:
resources:
limits:
cpus: "0.1"
memory: 256M
replicas: 1
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 10s
healthcheck:
test: /zookeeper/bin/zkServer.sh print-cmd || exit 1
interval: 1m
timeout: 3s
retries: 3
start_period: 15s
kafka:
image: debezium/kafka:1.2
ports:
- "9092:9092"
networks:
common:
volumes:
- "~/dev/docker/projects/debezium/volumes/kafka/data:/kafka/data"
- "~/dev/docker/projects/debezium/volumes/kafka/logs:/kafka/logs"
environment:
ZOOKEEPER_CONNECT: zookeeper:2181
HOST_USER_ID: ${CURRENT_UID}
HOST_GROUP_ID: ${CURRENT_GID}
depends_on:
- zookeeper
deploy:
replicas: 1
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 10s
healthcheck:
test: /kafka/bin/kafka-topics.sh --list --zookeeper zookeeper:2181 || exit 1
interval: 1m
timeout: 15s
retries: 3
start_period: 15s
networks:
common:
external: true
name: common
这篇关于debezium/zookeeper端口2181已关闭的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！