System configuration /etc/config/system
The system UCI subsystem configuration file is located in /etc/config/system.
The default settings are:
config system option hostname 'OpenWrt' option timezone 'UTC' option ttylogin '0' option log_size '64' option urandom_seed '0' config timeserver 'ntp' option enabled '1' option enable_server '0' list server '0.openwrt.pool.ntp.org' list server '1.openwrt.pool.ntp.org' list server '2.openwrt.pool.ntp.org' list server '3.openwrt.pool.ntp.org'
System section
The system section contains settings that apply to the most basic operation of the system, such as the hostname, the time zone, and how and where to write logging information to.
These options can be set in the system section:
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
hostname | string | no | OpenWrt | The hostname for this system. Avoid points, even if they are within quotes. For example ' my.hostname ' will show only the ' my ' part |
description | string | no | (none) | A short, single-line description for this system. It should be suitable for human consumption in user interfaces, such as LuCI, selector UIs in remote administration applications, or remote UCI (over ubus RPC). |
notes | string | no | (none) | A multi-line, free-form text field about this system that can be used in any way the user wishes, e.g. to hold installation notes, or unit serial number and inventory number, location, etc. |
buffersize | integer | no | kernel specific | Size of the kernel message buffer. |
conloglevel | integer | no | 7 | Number between 1-8. The maximum log level for kernel messages to be logged to the console. Only messages with a level lower than this will be printed to the console. Higher level messages have lower log level number. Highest level messages are ones with log level 0. If you want more verbose messages in console put conloglevel to 8 if you want less messages lower conloglevel to 4 or even less. This option and similar parameters may not be effective since 17.x and later. |
cronloglevel | integer | no | 5 | The minimum level for cron messages to be logged to syslog. 0 will print all debug messages, 8 will log command executions, and 9 or higher will only log error messages. |
klogconloglevel | integer | no | 7 | The maximum log level for kernel messages to be logged to the console. Only messages with a level lower than this will be printed to the console. Identical to conloglevel and will override it. |
log_buffer_size | integer | no | (none) | Size of the log buffer of the procd based system log, that is accessible via the logread command. Defaults to the value of log_size if unset. |
log_file | string | no | no log file | File to write log messages to (type file). The default is to not write a log in a file. The most often used location for a system log file is /var/log/messages. |
log_hostname | string | no | (none) | Hostname to send to remote syslog. If none is provided, the actual hostname is send. This feature is only present in 17.xx and later versions |
log_ip | IP address | no | (none) | IP address of a syslog server to which the log messages should be sent in addition to the local destination. |
log_port | integer | no | 514 | Port number of the remote syslog server specified with log_ip. |
log_prefix | string | no | (none) | Adds a prefix to all log messages send over network. |
log_proto | string | no | udp | Sets the protocol to use for the connection, either tcp or udp. |
log_remote | bool | no | 1 | Enables remote logging. |
log_size | integer | no | 64 | Size of the file based log buffer in KiB (see log_file). This value is used as the fallback value for log_buffer_size if the latter is not specified. |
log_trailer_null | bool | no | 0 | Use \0 instead of \n as trailer when using TCP. |
log_type | string | no | circular | Either circular or file. The circular option is a fixed size queue in memory, while the file is a dynamically sized file, that can be in memory, or written to disk. Note: If log_type is set to file, then at some point when the log fills, the device may encounter an out-of-space condition. This is especially an issue for devices with limited onboard storage: in memory, or on flash. |
ttylogin | bool | no | 0 | Require authentication for local users to log in the system. Disabled by default. It applies to the access methods listed in /etc/inittab, such as keyboard and serial. |
urandom_seed | string | no | 0 | Path of the seed. Enables saving a new seed on each boot. |
timezone | string | no | UTC | POSIX.1 time zone string corresponding to the time zone in which date and time should be displayed by default. See timezone database for a mapping between IANA/Olson and POSIX.1 formats. (For London this corresponds to GMT0BST,M3.5.0/1,M10.5.0) |
zonename | string | no | UTC | IANA/Olson time zone string. If zoneinfo-* packages are present, possible values can be found by running find /usr/share/zoneinfo. See timezone database for a mapping between IANA/Olson and POSIX.1 formats. (For London this corresponds to Europe/London) |
zram_comp_algo | string | no | lzo | Compression algorithm to use for ZRAM, can be one of lzo, lzo-rle, lz4, zstd |
zram_size_mb | integer | no | Ramsize in kB divided by 2048 | Size of ZRAM in MB |
Extras
Daylight saving time
Reload kernel timezone to properly apply DST.
cat << "EOF" >> /etc/crontabs/root 0 0 * * * service system restart EOF uci set system.@system[0].cronloglevel="9" uci commit system service cron restart