标签：end 执行文件 hint restart 企业 chown ystemd cgroup sql语法
InfluxDB是Influxdata旗下开源的一种时序数据库(Time Series Database)，根据DB-engine排名，目前在time series数据库领域排名第一位。
InfluxDB下载地址
https://portal.influxdata.com/downloads/
InfluxDB排名
https://db-engines.com/en/ranking/time+series+dbms
InfluxDB主要功能
缺点：
InfluxDB与RDBMS中的概念比较
| 概念 | InfluxDB | RDBMS |
| 数据库 | database | database |
| 表 | measurement | table |
| 行 | point | row |
| 列 | tag(可索引)，field(不可索引) | column |
# mkdir /usr/local/influxdb # groupadd -r dba # useradd -r -g dba tnuser # chown -R tnuser.dba /usr/local/influxdb # sudo su - tnuser $ cd /usr/local/influxdb $ wget https://dl.influxdata.com/influxdb/releases/influxdb-1.8.0-static_linux_amd64.tar.gz $ tar -zxf influxdb-1.8.0-static_linux_amd64.tar.gz $ mv influxdb-1.8.0-1/* . $ rm -rf influxdb-1.8.0*
使用CentOS7的systemctl管理InfluxDB服务
# cat /usr/lib/systemd/system/influxdb.service [Unit] Description=InfluxDB is time series database Documentation=https://docs.influxdata.com/influxdb/v1.8/introduction/get-started/ After=syslog.target After=network.target [Service] Type=fork User=tnuser Group=dba Restart=always # Disable OOM kill on the Redis OOMScoreAdjust=-1000 Environment=PG_OOM_ADJUST_FILE=/proc/self/oom_score_adj Environment=PG_OOM_ADJUST_VALUE=0 ExecStart=/usr/local/influxdb/usr/bin/influxd ExecStop=/bin/kill -15 $MAINPID LimitNOFILE=65536 [Install] WantedBy=multi-user.target
# systemctl daemon-reload # systemctl enable influxdb # systemctl start influxdb # systemctl status influxdb ● influxdb.service - InfluxDB is time series database Loaded: loaded (/usr/lib/systemd/system/influxdb.service; disabled; vendor preset: disabled) Active: active (running) since Sat 2020-04-18 23:19:03 PDT; 1s ago Docs: https://docs.influxdata.com/influxdb/v1.8/introduction/get-started/ Main PID: 22583 (influxd) CGroup: /system.slice/influxdb.service └─22583 /usr/local/influxdb/usr/bin/influxd Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.203421Z lvl=info msg="InfluxDB starting" log...568f5 Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.203467Z lvl=info msg="Go runtime" log_id=0MG...ocs=4 Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.311597Z lvl=info msg="Using data dir" log_id.../data Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.311635Z lvl=info msg="Compaction settings" l...31648 Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.311647Z lvl=info msg="Open store (start)" lo...start Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.553803Z lvl=info msg="Reading file" log_id=0...87843 Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.572851Z lvl=info msg="Opened file" log_id=0M...749ms Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.594031Z lvl=info msg="Opened file" log_id=0M...915ms Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.610554Z lvl=info msg="Opened shard" log_id=0...256ms Apr 18 23:19:04 ec2t-dbaadmin-01.mypna.com influxd[22583]: ts=2020-04-19T06:19:04.612039Z lvl=info msg="Opened shard" log_id=0...741ms Hint: Some lines were ellipsized, use -l to show in full.
标签：end 执行文件 hint restart 企业 chown ystemd cgroup sql语法
原文地址：https://www.cnblogs.com/ilifeilong/p/12731327.html
