基础服务启动System管理-CFANZ编程社区

4.基础组件版本信息

   4.1.1 JDK 软件包来源(1.8.0_131)
   
   wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.rpm
   
   4.1.2.配置环境变量
   cat /etc/profile.d/os.java.sh
   export JAVA_HOME=/usr/java/jdk1.8.0_131
   export JRE_HOME=${JAVA_HOME}/jre
   export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib:$CLASSPATH
   export JAVA_PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin
   export PATH=$PATH:${JAVA_PATH}
  
   4.1.3.初始化变量
   source /etc/profile.d/os.java.sh
   
   
   4.1.4 .查看java版本
   java -version
   
   
   4.2.1 apache-zookeeper 软件包来源(3.6.3)
   
   wget https://dlcdn.apache.org/zookeeper/zookeeper-3.6.3/apache-zookeeper-3.6.3-bin.tar.gz
   服务zoo.cfg 主配置文件
   tickTime=2000
   initLimit=20
   syncLimit=10
   clientPort=2181
   server.1=192.168.1.88:2888:3888
   server.2=192.168.1.201:2888:3888
   server.3=192.168.1.194:2888:3888
   dataDir=/app/zookeeper/data
   dataLogDir=/app/zookeeper/logdata
   maxClientCnxns=1000
   autopurge.purgeInterval=8  # 间隔5个小时清理一次
   autopurge.snapRetainCount=20 #log文件保存20个，snapshot快照文件保存20个。若zookeeper启动时超过设置的文件时，就会执行删除文件的操作。

 
   4.2.2.基础组件服务-改进点 
       1.常用软件可以存放在公司内部服务上提供HTTP方式获取,(防止公网链接地址失效) 软件管理仓库
       2.java 环境变量需要写在 /etc/profile.d/ 否则普通用户启动java程序无法加载环境变量
       3.zk配置文件需要变更ip地址为域名方式否则网络IP地址变更导致服务不可用
       4.zk配置文件中缺少日志快照的配置回收策略 未配置由于快照太多导致磁盘爆满不可用等问题
       5.ElasticJob 需要固定版本否则安装的软件可能无法提供业务使用 2.1.5
 
Centos 7 系统服务管理

 [Unit]
Description=Zookeeper
After=network.target

[Service]
Type=forking
User=deploy
Group=deploy
Environment=ZOO_LOG_DIR=/opt/app/zookeeper/bin

Environment=JAVA_HOME=/usr/java/jdk1.8
WorkingDirectory=/opt/app/zookeeper/bin
ExecStart=/opt/app/zookeeper/bin/zkServer.sh start
ExecStop=/opt/app/zookeeper/bin/zkServer.sh stop
Restart=always
RestartSec=10
TimeoutSec=360

[Install]
WantedBy=multi-user.target

4.2 Redis


4.2.1 主从sentinel模式(高可用模式) 版本选型: Redis5.0.9

wget https://download.redis.io/releases/redis-5.0.9.tar.gz

redis.conf #配置文件 0.0.0.0 

服务配置文件

[Unit]
Description=Redis
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
ExecStart=/usr/local/bin/redis-server /etc/redis.conf
ExecStop=kill -INT `cat /tmp/redis.pid`
User=ops
Group=ops

[Install]
WantedBy=multi-user.target



配置改进点
4.2.2
 1. redis 服务社区经常爆安全漏洞风险 bind 地址建议内网ip端或者固定ip地址
 2. redis-sentinel 场景生产环境建议部署三个sentinel高可用模式否则出现问题集群出现问题
 3. redis-sentinel 服务配置优化核心参数需要完善

4.3 rocketmq4.8.0

wget https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.8.0/rocketmq-all-4.8.0-bin-release.zip
broker-n2.conf
brokerClusterName=RaftCluster
brokerName=RaftNode00
listenPort=30911
namesrvAddr=192.168.180.204:9876;192.168.180.205:9876;192.168.180.206:9876
storePathRootDir=/app/data
storePathCommitLog=/app/data/commitlog
enableDLegerCommitLog=true
dLegerGroup=RaftNode00
dLegerPeers=n0-192.168.180.204:40911;n1-192.168.180.205:40912;n2-192.168.180.206:40913

## must be unique
dLegerSelfId=n2
sendMessageThreadPoolNums=16
nohup sh mqnamesrv &
nohup sh mqbroker -c ../dledger/broker-n2.conf &



cat /lib/systemd/system/rocketmqnamesrv.service
[Unit]
Description=rocketmq - nameserver
Documentation=http://mirror.bit.edu.cn/apache/rocketmq/
After=network.target

[Service]
Type=sample
User=root
ExecStart=/data/rocketmq/bin/mqnamesrv
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
Restart=0
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target


cat /lib/systemd/system/rocketmqbroker.service 
[Unit]
Description=rocketmq - broker-master-2
Documentation=http://mirror.bit.edu.cn/apache/rocketmq/
After=network.target

[Service]
Type=sample
User=root
ExecStart=/data/rocketmq/bin/mqbroker -c /data/rocketmq/conf/2m-noslave/broker-b.properties
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
Restart=0
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target



*****4.4 kafka*****

[Unit]
Description=Apache Kafka server (broker)
After=network.target  zookeeper.service

[Service]
Type=simple
Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/app/userhome/yun/jdk1.8.0_202/bin/"
User=root
Group=root
ExecStart=/data/app/kafka/bin/kafka-server-start.sh /data/app/kafka/config/server.properties
ExecStop=/data/app/kafka/bin/kafka-server-stop.sh
Restart=on-failure

[Install]
WantedBy=multi-user.target