[zjh@hs-10-20-30-193 ~]$ lt_ctl -D lightdb-x-dev-server/data stop #停止
waiting for server to shut down............................... done
server stopped
[zjh@hs-10-20-30-193 ~]$ lt_ctl -D lightdb-x-dev-server/data start # 启动
waiting for server to start....2022-05-26 06:43:53.407933C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] LOG: LightDB autoprewarm: prewarm dbnum=0
2022-05-26 06:43:53.408078C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] LOG: Auto detecting pg_stat_kcache.linux_hz parameter...
2022-05-26 06:43:53.408093C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] LOG: pg_stat_kcache.linux_hz is set to 1000000
2022-05-26 06:43:53.410947C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] LOG: pgaudit extension initialized
2022-05-26 06:43:53.617145C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] LOG: redirecting log output to logging collector process
2022-05-26 06:43:53.617145C @ postmaster 00000[2022-05-26 06:43:53 UTC] 0 [167878] HINT: Future log output will appear in directory "log".
done
server started
[zjh@hs-10-20-30-193 ~]$ lt_ctl --help
lt_ctl is a utility to initialize, start, stop, or control a LightDB server.
Usage:
lt_ctl init[db] [-D DATADIR] [-s] [-o OPTIONS]
lt_ctl start [-D DATADIR] [-l FILENAME] [-W] [-t SECS] [-K KEY-CMD] [-s]
[-o OPTIONS] [-p PATH] [-c]
lt_ctl stop [-D DATADIR] [-m SHUTDOWN-MODE] [-W] [-t SECS] [-s]
lt_ctl restart [-D DATADIR] [-m SHUTDOWN-MODE] [-W] [-t SECS] [-K KEY-CMD] [-s]
[-o OPTIONS] [-c]
lt_ctl reload [-D DATADIR] [-s]
lt_ctl status [-D DATADIR]
lt_ctl promote [-D DATADIR] [-W] [-t SECS] [-s]
lt_ctl logrotate [-D DATADIR] [-s]
lt_ctl kill SIGNALNAME PID
Common options:
-D, --pgdata=DATADIR location of the database storage area
-K, --encryption-key-command command that returns encryption key
-s, --silent only print errors, no informational messages
-t, --timeout=SECS seconds to wait when using -w option
-V, --version output version information, then exit
-w, --wait wait until operation completes (default)
-W, --no-wait do not wait until operation completes
-Y, --SM key file external import SM2/SM4 key file path
-?, --help show this help, then exit
If the -D option is omitted, the environment variable PGDATA is used.
Options for start or restart:
-c, --core-files allow lightdb to produce core files
-l, --log=FILENAME write (or append) server log to FILENAME
-o, --options=OPTIONS command line options to pass to postgres
(PostgreSQL server executable) or initdb
-p PATH-TO-POSTGRESQL normally not necessary
Options for stop or restart:
-m, --mode=MODE MODE can be "smart", "fast", or "immediate"
Shutdown modes are:
smart quit after all clients have disconnected
fast quit directly, with proper shutdown (default)
immediate quit without complete shutdown; will lead to recovery on restart
Allowed signal names for kill:
ABRT HUP INT KILL QUIT TERM USR1 USR2
Report bugs to //github.com/hslightdb>.
LightDB home page: //www.hs.net/lightdb>
[zjh@hs-10-20-30-193 ~]$ ltsql -Ulightdb
ltsql (13.3-22.1)
Type "help" for help.
lightdb@postgres=# select current_user;
current_user
cron.database_name | postgres | Database in which pg_cron metadata is kept.
data_checksums | off | Shows whether data checksums are turned on for this cluster.
data_directory | /mnt/pmem0/data/data524 | Sets the server's data directory.
data_directory_mode | 0700 | Mode of the data directory.
data_encryption | off | Shows whether data encryption is turned on for this cluster.
data_sync_retry | off | Whether to continue running after a failure to sync data files.
(6 rows)
不重启修改参数
lightdb@postgres=# alter system set data_sync_retry=on;
ALTER SYSTEM
lightdb@postgres=# exit
[zjh@hs-10-20-30-193 ~]$ lt_ctl -D lightdb-x-dev-server/data reload
server signaled
[zjh@hs-10-20-30-193 ~]$
Original: https://www.cnblogs.com/zhjh256/p/16313452.html
Author: zhjh256
Title: lightdb启动与停止
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