options: nagios_master: default: "None" type: string description: | IP address of the nagios master from which to allow rsync access server_port: default: 5666 type: int description: | Port on which nagios-nrpe-server will listen nagios_address_type: default: "private" type: string description: | Determines whether the nagios host check should use the private or public IP address of an instance. Can be "private" or "public". nagios_host_context: default: "juju" type: string description: | A string which will be prepended to instance name to set the host name in nagios. So for instance the hostname would be something like: juju-postgresql-0 If you're running multiple environments with the same services in them this allows you to differentiate between them. nagios_hostname_type: default: "auto" type: string description: | Determines whether a server is identified by its unit name or host name. If you're in a virtual environment, "unit" is probably best. If you're using MaaS, you may prefer "host". Use "auto" to have nrpe automatically distinguish between metal and non-metal hosts. dont_blame_nrpe: default: False type: boolean description: | Setting dont_blame_nrpe to True sets dont_blame_nrpe=1 in nrpe.cfg This config option which allows specifying arguments to nrpe scripts. This can be a security risk so it is disabled by default. Nrpe is compiled with --enable-command-args option by default, which this option enables. debug: default: False type: boolean description: | Setting debug to True enables debug=1 in nrpe.cfg disk_root: default: "-u GB -w 25% -c 20% -K 5%" type: string description: | Root disk check. This can be made to also check non-root disk systems as follows: -u GB -w 20% -c 15% -r '/srv/juju/vol-' -C -u GB -w 25% -c 20% The string '-p /' will be appended to this check, so you must finish the string taking that into account. See the nagios check_disk plugin help for further details. . Set to '' in order to disable this check. zombies: default: "" type: string description: | Zombie processes check; defaults to disabled. To enable, set the desired check_procs arguments pertaining to zombies, for example: "-w 3 -c 6 -s Z" procs: default: "" type: string description: | Set thresholds for number of running processes. Defaults to disabled; to enable, specify 'auto' for the charm to generate thresholds based on processor count, or manually provide arguments for check_procs, for example: "-k -w 250 -c 300" to set warning and critical levels manually and exclude kernel threads. load: default: "auto" type: string description: | Load check arguments (e.g. "-w 8,8,8 -c 15,15,15"); if 'auto' is set, thresholds will be set to multipliers of processor count for 1m, 5m and 15m thresholds, with warning as "(4, 2, 1)", and critical set to "(8, 4, 2)". So if you have two processors, you'd get thresholds of "-w 8,4,2 -c 16,8,4". . Set to '' in order to disable this check. conntrack: default: "-w 80 -c 90" type: string description: | Check conntrack (net.netfilter.nf_conntrack_count) against thresholds. . Set to '' in order to disable this check. users: default: "" type: string description: | Set thresholds for number of logged-in users. Defaults to disabled; to enable, manually provide arguments for check_user, for example: "-w 20 -c 25" swap: default: '' type: string description: | Check swap utilisation. See the nagios check_swap plugin help for further details. The format looks like "-w 40% -c 25%" . Set to '' in order to disable this check. swap_activity: default: "-i 5 -w 10240 -c 40960" type: string description: | Swapout activity check. Thresholds are expressed in kB, interval in seconds. . Set to '' in order to disable this check. mem: default: "-C -h -u -w 85 -c 90" type: string description: | Check memory % used. By default, thresholds are applied to the non-hugepages portion of the memory. . Set to '' in order to disable this check. lacp_bonds: default: '' type: string description: | LACP bond interfaces, space-delimited (ie. 'bond0 bond1') netlinks: default: '' type: string description: | Network interfaces to monitor for correct link state, MTU size and speed negotiated. The first argument is either an interface name or a CIDR expression. Parsed keywords are "mtu", "speed", and "op". Other keywords are ignored. . Note that CIDR expressions can match multiple devices. . For example (multi-line starts with pipe): - 10.1.2.0/24 mtu:9000 speed:25000 - eth0 mtu:9000 speed:25000 - lo mtu:65536 op:unknown - br0-mgmt mtu:9000 - br0-sta mtu:9000 - br0-stc mtu:9000 - br0-api mtu:1500 - bond0 mtu:9000 speed:50000 - bond0.25 mtu:1500 speed:50000 - ens3 mtu:1500 speed:-1 desc:openstack_iface - ... netlinks_skip_unfound_ifaces: default: False type: boolean description: | add --skip-unfound-ifaces to check_netlinks.py. monitors: default: '' type: string description: | Additional monitors defined in the monitors yaml format (see README) hostgroups: default: "" type: string description: Comma separated list of hostgroups to add for these hosts hostcheck_inherit: default: "server" type: string description: Hostcheck to inherit export_nagios_definitions: default: False type: boolean description: | If True nagios check definitions are written to '/var/lib/nagios/export' and rync is configured to allow nagios_master to collect them. Useful when Nagios is outside of the juju environment sub_postfix: default: "" type: string description: | A string to be appended onto all the nrpe checks created by this charm to avoid potential clashes with existing checks xfs_errors: default: "" type: string description: | dmesg history length to check for xfs errors, in minutes . Defaults to disabled, set the time to enable. ro_filesystem_excludes: default: "/snap/,/sys/fs/cgroup,/run/containerd,/var/lib/docker" type: string description: | Comma separated list of mount points to exclude from checks for readonly filesystem. Can be a substring rather than the entire mount point, e.g. /sys will match all filesystems beginning with the string /sys. The check is disabled on all LXD units, and also for non-container units if this parameter is set to ''. cpu_governor: default: "" type: string description: | CPU governor check. The string value here will be checked against all CPUs in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor. The supported values are 'ondemand', 'performance', 'powersave'. Unset value means the check will be disabled. There is a relation key called requested_cpu_governor='string', but the charm config value will take precedence over the relation data.