Docker?compose啟動服務遇到的問題小結
這是學長留的一個任務,用docker compose啟動三個服務,分別是minio、elasticsearch、nginx。
話不多說,讓我們看看有哪些錯誤。
一、數(shù)據(jù)卷掛載權限問題
這是原始docker-compose.yaml文件
version: "3.8"
networks:
my-net:
name: gkynet
services:
minio:
image: "bitnami/minio:latest"
container_name: minio
ports:
- "9000:9000"
- "9001:9001"
environment:
- MINIO_ROOT_USER=root
- MINIO_ROOT_PASSWORD=123456
volumes:
- "./minio/data:/bitnami/minio/data"
networks:
- my-net
elasticsearch:
image: "elasticsearch:7.17.5"
container_name: es
environment:
- "TZ=Asia/Shanghai"
ports:
- "9200:9200"
volumes:
- "./es/certs:/usr/share/elasticsearch/config/certs"
- "./es/data:/usr/share/elasticsearch/data"
networks:
- my-net
nginx:
image: "nginx:latest"
container_name: nginx
environment:
- "TZ=Asia/Shanghai"
ports:
- "80:80"
- "443:443"
volumes:
- "./nginx/html:/usr/share/nginx/html"
networks:
- my-net執(zhí)行docker compose up -d命令后,三個容器都沒有啟動成功。
執(zhí)行docker logs minio查看日志
/opt/bitnami/scripts/libminio.sh: line 364: /bitnami/minio/data/.root_user: Permission denied
其他兩個服務的日志也差不多,都是掛載的目錄沒有正確的權限。
解決辦法
使用以下命令設置目錄權限:
chmod -R 777 掛載的目錄路徑
二、Elasticsearch 啟動的引導檢查失敗
es報錯信息:
ERROR: [2] bootstrap checks failed. You must address the points described in the following [2] lines before starting Elasticsearch.
bootstrap check failure [1] of [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
bootstrap check failure [2] of [2]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
原因:
- max virtual memory areas 的限制過低,需要增加到至少 262144。
- 默認的發(fā)現(xiàn)設置對于生產(chǎn)環(huán)境來說是不合適的,至少需要配置其中一個:discovery.seed_hosts、discovery.seed_providers 或 cluster.initial_master_nodes。
解決辦法
使配置es的環(huán)境變量:
elasticsearch:
image: "elasticsearch:7.17.5"
container_name: es
environment:
- "TZ=Asia/Shanghai"
- "cluster.name=elasticsearch" #設置集群名稱為elasticsearch
- "discovery.type=single-node" #以單一節(jié)點模式啟動
- "ES_JAVA_OPTS=-Xms512m -Xmx1024m" #設置使用jvm內存大小
ports:
- "9200:9200"
volumes:
- "./es/certs:/usr/share/elasticsearch/config/certs"
- "./es/data:/usr/share/elasticsearch/data"
networks:
- my-net三、minIO啟動失敗
minio報錯信息:
02:08:37.33 INFO ==> ** Starting MinIO setup **
minio 02:08:37.37 INFO ==> Starting MinIO in background...
minio 02:08:47.46 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:08:52.59 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:08:57.73 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:02.80 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:07.87 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:12.95 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:18.02 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:23.09 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:28.15 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:33.22 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:38.30 INFO ==> Adding local Minio host to 'mc' configuration...
minio 02:09:43.36 INFO ==> Adding local Minio host to 'mc' configuration...
Failed to add temporary MinIO server
minio 02:09:48.45 INFO ==> MinIO is already stopped...
啥也看不出來對不對??,這個問題我也在網(wǎng)上找了好久。看到了這篇
解決辦法
minio的賬號長度必須大于等于5,密碼長度必須大于等于8位)
minio:
image: "bitnami/minio:latest"
container_name: minio
ports:
- "9000:9000"
- "9001:9001"
environment:
- MINIO_ROOT_USER=admin
- MINIO_ROOT_PASSWORD=kaiyuan123
volumes:
- "./minio/data:/bitnami/minio/data"
networks:
- my-net完整docker-compose文件
version: "3.8"
networks:
my-net:
name: gkynet
services:
minio:
image: "bitnami/minio:latest"
container_name: minio
ports:
- "9000:9000"
- "9001:9001"
environment:
- MINIO_ROOT_USER=admin
- MINIO_ROOT_PASSWORD=kaiyuan123
volumes:
- "./minio/data:/bitnami/minio/data"
networks:
- my-net
elasticsearch:
image: "elasticsearch:7.17.5"
container_name: es
environment:
- "TZ=Asia/Shanghai"
- "cluster.name=elasticsearch" #設置集群名稱為elasticsearch
- "discovery.type=single-node" #以單一節(jié)點模式啟動
- "ES_JAVA_OPTS=-Xms512m -Xmx1024m" #設置使用jvm內存大小
ports:
- "9200:9200"
volumes:
- "./es/certs:/usr/share/elasticsearch/config/certs"
- "./es/data:/usr/share/elasticsearch/data"
networks:
- my-net
nginx:
image: "nginx:latest"
container_name: nginx
environment:
- "TZ=Asia/Shanghai"
ports:
- "80:80"
- "443:443"
volumes:
- "./nginx/html:/usr/share/nginx/html"
networks:
- my-net總結
折騰了快一天終于搞完了。說明一下,這個是檢驗我們的docker compose掌握程度,因此里面的鏡像沒有提前拉取,掛載數(shù)據(jù)卷的目錄也沒有提前創(chuàng)建。雖然docker compose up執(zhí)行后會自動幫你完成這些事,但正規(guī)的做法是把docker compose用到的東西提前準備好,這樣能減少很多麻煩。
如果對你有幫助,可以給個贊??
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