Kubernetes中安装部署Nacos集群

1、Nacos安装包的准备

1.1 下载安装包

1.2 解压安装包

1.3 修改配置文件 application.properties

1.4 bin目录下创建 docker-startup.sh

1.5 将nacos-server-1.2.1目录打包成nacos-server-1.2.1.tar.gz

2、 nacos镜像制作

2.1 Dockerfile文件编写

2.2 制作镜像并上传

3、部署Nacos集群

3.1 创建命令空间

3.2 编写nacos.yaml文件

3.3 执行命令创建并查看

3.4 访问服务

1、Nacos安装包的准备

1.1 下载安装包

官方下载的nacos-server-1.2.1.zip包需要经过处理下：修改配置、加入docker-startup.sh启动脚本

https://github.com/alibaba/nacos/releases/download/1.2.1/nacos-server-1.2.1.zip

1.2 解压安装包

[K8S@k8s-master nacos-cluster]$ pwd
/home/K8S/k8s-project/nacos-cluster
[K8S@k8s-master nacos-cluster]$ ls
nacos-server-1.2.1.zip
[K8S@k8s-master nacos-cluster]$ mkdir nacos-server-1.2.1
[K8S@k8s-master nacos-cluster]$ unzip nacos-server-1.2.1/ nacos-server-1.2.1.zip 
[K8S@k8s-master nacos-cluster]$ ls
nacos-server-1.2.1 nacos-server-1.2.1.zip

1.3 修改配置文件 `application.properties`

这里需要对application.properties进行修改：

[K8S@k8s-master conf]$ pwd
/home/K8S/k8s-project/nacos-cluster/nacos-server-1.2.1/nacos/conf

[K8S@k8s-master conf]$ cat application.properties
# spring
server.servlet.contextPath=${SERVER_SERVLET_CONTEXTPATH:/nacos}
server.contextPath=/nacos
server.port=${NACOS_SERVER_PORT:8848}
spring.datasource.platform=${SPRING_DATASOURCE_PLATFORM:""}
nacos.cmdb.dumpTaskInterval=3600
nacos.cmdb.eventTaskInterval=10
nacos.cmdb.labelTaskInterval=300
nacos.cmdb.loadDataAtStart=false
db.num=${MYSQL_DATABASE_NUM:1}
db.url.0=jdbc:mysql://${MYSQL_SERVICE_HOST}:${MYSQL_SERVICE_PORT:3306}/${MYSQL_SERVICE_DB_NAME}?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=${MYSQL_SERVICE_USER}
db.password=${MYSQL_SERVICE_PASSWORD}
### The auth system to use, currently only 'nacos' is supported:
nacos.core.auth.system.type=${NACOS_AUTH_SYSTEM_TYPE:nacos}


### The token expiration in seconds:
nacos.core.auth.default.token.expire.seconds=${NACOS_AUTH_TOKEN_EXPIRE_SECONDS:18000}

### The default token:
nacos.core.auth.default.token.secret.key=${NACOS_AUTH_TOKEN:SecretKey012345678901234567890123456789012345678901234567890123456789}

### Turn on/off caching of auth information. By turning on this switch, the update of auth information would have a 15 seconds delay.
nacos.core.auth.caching.enabled=${NACOS_AUTH_CACHE_ENABLE:false}

server.tomcat.accesslog.enabled=${TOMCAT_ACCESSLOG_ENABLED:false}
server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D
# default current work dir
server.tomcat.basedir=
## spring security config
### turn off security
nacos.security.ignore.urls=/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/**
# metrics for elastic search
management.metrics.export.elastic.enabled=false
management.metrics.export.influx.enabled=false

nacos.naming.distro.taskDispatchThreadCount=10
nacos.naming.distro.taskDispatchPeriod=200
nacos.naming.distro.batchSyncKeyCount=1000
nacos.naming.distro.initDataRatio=0.9
nacos.naming.distro.syncRetryDelay=5000
nacos.naming.data.warmup=true

1.4 bin目录下创建 `docker-startup.sh`

还需要在bin目录下添加docker-startup.sh启动脚本
容器里nacos集群模式的启动脚本必须使用docker-startup.sh这个，不能使用startup.sh启动脚本

[K8S@k8s-master bin]$ pwd
/home/K8S/k8s-project/nacos-cluster/nacos-server-1.2.1/nacos/bin
[K8S@k8s-master bin]$ cat docker-startup.sh 
#!/bin/bash
# Copyright 1999-2018 Alibaba Group Holding Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
 
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -x
export DEFAULT_SEARCH_LOCATIONS="classpath:/,classpath:/config/,file:./,file:./config/"
export CUSTOM_SEARCH_LOCATIONS=${DEFAULT_SEARCH_LOCATIONS},file:${BASE_DIR}/conf/,${BASE_DIR}/init.d/
export CUSTOM_SEARCH_NAMES="application,custom"
PLUGINS_DIR="/home/nacos/plugins/peer-finder"
function print_servers(){
   if [[ ! -d "${PLUGINS_DIR}" ]]; then
    echo "" > "$CLUSTER_CONF"
    for server in ${NACOS_SERVERS}; do
            echo "$server" >> "$CLUSTER_CONF"
    done
   else
    bash $PLUGINS_DIR/plugin.sh
   sleep 30
        fi
}
#===========================================================================================
# JVM Configuration
#===========================================================================================
if [[ "${MODE}" == "standalone" ]]; then
 
    JAVA_OPT="${JAVA_OPT} -Xms512m -Xmx512m -Xmn256m"
    JAVA_OPT="${JAVA_OPT} -Dnacos.standalone=true"
else
 
  JAVA_OPT="${JAVA_OPT} -server -Xms${JVM_XMS} -Xmx${JVM_XMX} -Xmn${JVM_XMN} -XX:MetaspaceSize=${JVM_MS} -XX:MaxMetaspaceSize=${JVM_MMS}"
  if [[ "${NACOS_DEBUG}" == "y" ]]; then
    JAVA_OPT="${JAVA_OPT} -Xdebug -Xrunjdwp:transport=dt_socket,address=9555,server=y,suspend=n"
  fi
  JAVA_OPT="${JAVA_OPT} -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=${BASE_DIR}/logs/java_heapdump.hprof"
  JAVA_OPT="${JAVA_OPT} -XX:-UseLargePages"
  print_servers
fi
 
#===========================================================================================
# Setting system properties
#===========================================================================================
# set  mode that Nacos Server function of split
if [[ "${FUNCTION_MODE}" == "config" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.functionMode=config"
elif [[ "${FUNCTION_MODE}" == "naming" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.functionMode=naming"
fi
# set nacos server ip
if [[ ! -z "${NACOS_SERVER_IP}" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.server.ip=${NACOS_SERVER_IP}"
fi
 
if [[ ! -z "${USE_ONLY_SITE_INTERFACES}" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.inetutils.use-only-site-local-interfaces=${USE_ONLY_SITE_INTERFACES}"
fi
 
if [[ ! -z "${PREFERRED_NETWORKS}" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.inetutils.preferred-networks=${PREFERRED_NETWORKS}"
fi
 
if [[ ! -z "${IGNORED_INTERFACES}" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.inetutils.ignored-interfaces=${IGNORED_INTERFACES}"
fi
 
### If turn on auth system:
if [[ ! -z "${NACOS_AUTH_ENABLE}" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.core.auth.enabled=${NACOS_AUTH_ENABLE}"
fi
 
if [[ "${PREFER_HOST_MODE}" == "hostname" ]]; then
    JAVA_OPT="${JAVA_OPT} -Dnacos.preferHostnameOverIp=true"
fi
 
JAVA_MAJOR_VERSION=$($JAVA -version 2>&1 | sed -E -n 's/.* version "([0-9]*).*$/\1/p')
if [[ "$JAVA_MAJOR_VERSION" -ge "9" ]] ; then
  JAVA_OPT="${JAVA_OPT} -cp .:${BASE_DIR}/plugins/cmdb/*.jar:${BASE_DIR}/plugins/mysql/*.jar"
  JAVA_OPT="${JAVA_OPT} -Xlog:gc*:file=${BASE_DIR}/logs/nacos_gc.log:time,tags:filecount=10,filesize=102400"
else
  JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${JAVA_HOME}/jre/lib/ext:${JAVA_HOME}/lib/ext:${BASE_DIR}/plugins/health:${BASE_DIR}/plugins/cmdb:${BASE_DIR}/plugins/mysql"
  JAVA_OPT="${JAVA_OPT} -Xloggc:${BASE_DIR}/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M"
fi
 
 
 
JAVA_OPT="${JAVA_OPT} -Dnacos.home=${BASE_DIR}"
JAVA_OPT="${JAVA_OPT} -jar ${BASE_DIR}/target/nacos-server.jar"
JAVA_OPT="${JAVA_OPT} ${JAVA_OPT_EXT}"
JAVA_OPT="${JAVA_OPT} --spring.config.location=${CUSTOM_SEARCH_LOCATIONS}"
JAVA_OPT="${JAVA_OPT} --spring.config.name=${CUSTOM_SEARCH_NAMES}"
JAVA_OPT="${JAVA_OPT} --logging.config=${BASE_DIR}/conf/nacos-logback.xml"
JAVA_OPT="${JAVA_OPT} --server.max-http-header-size=524288"
 
echo "nacos is starting,you can check the ${BASE_DIR}/logs/start.out"
echo "$JAVA ${JAVA_OPT}" > ${BASE_DIR}/logs/start.out 2>&1 &
nohup $JAVA ${JAVA_OPT} > ${BASE_DIR}/logs/start.out 2>&1 < /dev/null[K8S@k8s-master bin]$