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Diffstat (limited to 'templates/module/linux_snmp_snmp/README.md')
| -rw-r--r-- | templates/module/linux_snmp_snmp/README.md | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/templates/module/linux_snmp_snmp/README.md b/templates/module/linux_snmp_snmp/README.md index 2f6d2b06e44..a07c669e8c8 100644 --- a/templates/module/linux_snmp_snmp/README.md +++ b/templates/module/linux_snmp_snmp/README.md @@ -34,9 +34,9 @@ There are no template links in this template. |-----|----|-----------|----|---------------------| |Memory |Memory utilization |<p>Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.</p> |CALCULATED |vm.memory.util[snmp]<p>**Expression**:</p>`(last(//vm.memory.total[memTotalReal.0])-(last(//vm.memory.free[memAvailReal.0])+last(//vm.memory.buffers[memBuffer.0])+last(//vm.memory.cached[memCached.0])))/last(//vm.memory.total[memTotalReal.0])*100` | |Memory |Free memory |<p>MIB: UCD-SNMP-MIB</p> |SNMP |vm.memory.free[memAvailReal.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | -|Memory |Memory (buffers) |<p>MIB: UCD-SNMP-MIB</p><p>Memory used by kernel buffers (Buffers in /proc/meminfo)</p> |SNMP |vm.memory.buffers[memBuffer.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | -|Memory |Memory (cached) |<p>MIB: UCD-SNMP-MIB</p><p>Memory used by the page cache and slabs (Cached and Slab in /proc/meminfo)</p> |SNMP |vm.memory.cached[memCached.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | -|Memory |Total memory |<p>MIB: UCD-SNMP-MIB</p><p>Total memory in Bytes</p> |SNMP |vm.memory.total[memTotalReal.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | +|Memory |Memory (buffers) |<p>MIB: UCD-SNMP-MIB</p><p>Memory used by kernel buffers (Buffers in /proc/meminfo).</p> |SNMP |vm.memory.buffers[memBuffer.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | +|Memory |Memory (cached) |<p>MIB: UCD-SNMP-MIB</p><p>Memory used by the page cache and slabs (Cached and Slab in /proc/meminfo).</p> |SNMP |vm.memory.cached[memCached.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | +|Memory |Total memory |<p>MIB: UCD-SNMP-MIB</p><p>Total memory in Bytes.</p> |SNMP |vm.memory.total[memTotalReal.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | |Memory |Available memory |<p>Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.</p> |CALCULATED |vm.memory.available[snmp]<p>**Expression**:</p>`last(//vm.memory.free[memAvailReal.0])+last(//vm.memory.buffers[memBuffer.0])+last(//vm.memory.cached[memCached.0])` | |Memory |Total swap space |<p>MIB: UCD-SNMP-MIB</p><p>The total amount of swap space configured for this host.</p> |SNMP |system.swap.total[memTotalSwap.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | |Memory |Free swap space |<p>MIB: UCD-SNMP-MIB</p><p>The amount of swap space currently unused or available.</p> |SNMP |system.swap.free[memAvailSwap.0]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> | @@ -48,7 +48,7 @@ There are no template links in this template. |----|-----------|----|----|----| |High memory utilization (>{$MEMORY.UTIL.MAX}% for 5m) |<p>The system is running out of free memory.</p> |`min(/Linux memory SNMP/vm.memory.util[snmp],5m)>{$MEMORY.UTIL.MAX}` |AVERAGE |<p>**Depends on**:</p><p>- Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})</p> | |Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2}) |<p>-</p> |`max(/Linux memory SNMP/vm.memory.available[snmp],5m)<{$MEMORY.AVAILABLE.MIN} and last(/Linux memory SNMP/vm.memory.total[memTotalReal.0])>0` |AVERAGE | | -|High swap space usage (less than {$SWAP.PFREE.MIN.WARN}% free) |<p>This trigger is ignored, if there is no swap configured</p> |`max(/Linux memory SNMP/system.swap.pfree[snmp],5m)<{$SWAP.PFREE.MIN.WARN} and last(/Linux memory SNMP/system.swap.total[memTotalSwap.0])>0` |WARNING |<p>**Depends on**:</p><p>- High memory utilization (>{$MEMORY.UTIL.MAX}% for 5m)</p><p>- Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})</p> | +|High swap space usage (less than {$SWAP.PFREE.MIN.WARN}% free) |<p>This trigger is ignored, if there is no swap configured.</p> |`max(/Linux memory SNMP/system.swap.pfree[snmp],5m)<{$SWAP.PFREE.MIN.WARN} and last(/Linux memory SNMP/system.swap.total[memTotalSwap.0])>0` |WARNING |<p>**Depends on**:</p><p>- High memory utilization (>{$MEMORY.UTIL.MAX}% for 5m)</p><p>- Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})</p> | ## Feedback @@ -155,9 +155,9 @@ There are no template links in this template. |CPU |CPU nice time |<p>MIB: UCD-SNMP-MIB</p><p>The time the CPU has spent running users' processes that have been niced.</p> |SNMP |system.cpu.nice[ssCpuRawNice.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | |CPU |CPU iowait time |<p>MIB: UCD-SNMP-MIB</p><p>Amount of time the CPU has been waiting for I/O to complete.</p> |SNMP |system.cpu.iowait[ssCpuRawWait.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | |CPU |CPU interrupt time |<p>MIB: UCD-SNMP-MIB</p><p>The amount of time the CPU has been servicing hardware interrupts.</p> |SNMP |system.cpu.interrupt[ssCpuRawInterrupt.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | -|CPU |CPU guest time |<p>MIB: UCD-SNMP-MIB</p><p>Guest time (time spent running a virtual CPU for a guest operating system)</p> |SNMP |system.cpu.guest[ssCpuRawGuest.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | -|CPU |CPU guest nice time |<p>MIB: UCD-SNMP-MIB</p><p>Time spent running a niced guest (virtual CPU for guest operating systems under the control of the Linux kernel)</p> |SNMP |system.cpu.guest_nice[ssCpuRawGuestNice.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | -|CPU |CPU utilization |<p>CPU utilization in %</p> |DEPENDENT |system.cpu.util[snmp,{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- JAVASCRIPT: `//Calculate utilization return (100 - value) `</p> | +|CPU |CPU guest time |<p>MIB: UCD-SNMP-MIB</p><p>Guest time (time spent running a virtual CPU for a guest operating system).</p> |SNMP |system.cpu.guest[ssCpuRawGuest.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | +|CPU |CPU guest nice time |<p>MIB: UCD-SNMP-MIB</p><p>Time spent running a niced guest (virtual CPU for guest operating systems under the control of the Linux kernel).</p> |SNMP |system.cpu.guest_nice[ssCpuRawGuestNice.{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> | +|CPU |CPU utilization |<p>CPU utilization in %.</p> |DEPENDENT |system.cpu.util[snmp,{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- JAVASCRIPT: `//Calculate utilization return (100 - value) `</p> | ## Triggers @@ -188,6 +188,8 @@ No specific Zabbix configuration is required. |Name|Description|Default| |----|-----------|-------| +|{$VFS.FS.FREE.MIN.CRIT} |<p>The critical threshold of the filesystem utilization.</p> |`5G` | +|{$VFS.FS.FREE.MIN.WARN} |<p>The warning threshold of the filesystem utilization.</p> |`10G` | |{$VFS.FS.FSNAME.MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`.+` | |{$VFS.FS.FSNAME.NOT_MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`^(/dev|/sys|/run|/proc|.+/shm$)` | |{$VFS.FS.FSTYPE.MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`.*(\.4|\.9|hrStorageFixedDisk|hrStorageFlashMemory)$` | @@ -220,8 +222,8 @@ There are no template links in this template. |Name|Description|Expression|Severity|Dependencies and additional info| |----|-----------|----|----|----| -|{#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}.</p><p> Second condition should be one of the following:</p><p> - The disk free space is less than 5G.</p><p> - The disk will be full in less than 24 hours.</p> |`last(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and ((last(/Linux filesystems SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Linux filesystems SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<5G or timeleft(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d) ` |AVERAGE |<p>Manual close: YES</p> | -|{#FSNAME}: Disk space is low (used > {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}.</p><p> Second condition should be one of the following:</p><p> - The disk free space is less than 10G.</p><p> - The disk will be full in less than 24 hours.</p> |`last(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"} and ((last(/Linux filesystems SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Linux filesystems SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<10G or timeleft(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d) ` |WARNING |<p>Manual close: YES</p><p>**Depends on**:</p><p>- {#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%)</p> | +|{#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}.</p><p> Second condition should be one of the following:</p><p> - The disk free space is less than {$VFS.FS.FREE.MIN.CRIT:"{#FSNAME}"}.</p><p> - The disk will be full in less than 24 hours.</p> |`last(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and ((last(/Linux filesystems SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Linux filesystems SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<{$VFS.FS.FREE.MIN.CRIT:"{#FSNAME}"} or timeleft(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d) ` |AVERAGE |<p>Manual close: YES</p> | +|{#FSNAME}: Disk space is low (used > {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}.</p><p> Second condition should be one of the following:</p><p> - The disk free space is less than {$VFS.FS.FREE.MIN.WARN:"{#FSNAME}"}.</p><p> - The disk will be full in less than 24 hours.</p> |`last(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"} and ((last(/Linux filesystems SNMP/vfs.fs.total[hrStorageSize.{#SNMPINDEX}])-last(/Linux filesystems SNMP/vfs.fs.used[hrStorageUsed.{#SNMPINDEX}]))<{$VFS.FS.FREE.MIN.WARN:"{#FSNAME}"} or timeleft(/Linux filesystems SNMP/vfs.fs.pused[storageUsedPercentage.{#SNMPINDEX}],1h,100)<1d) ` |WARNING |<p>Manual close: YES</p><p>**Depends on**:</p><p>- {#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%)</p> | |{#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%) |<p>It may become impossible to write to disk if there are no index nodes left.</p><p>As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.</p> |`min(/Linux filesystems SNMP/vfs.fs.inode.pfree[dskPercentNode.{#SNMPINDEX}],5m)<{$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}` |AVERAGE | | |{#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"}%) |<p>It may become impossible to write to disk if there are no index nodes left.</p><p>As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.</p> |`min(/Linux filesystems SNMP/vfs.fs.inode.pfree[dskPercentNode.{#SNMPINDEX}],5m)<{$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"}` |WARNING |<p>**Depends on**:</p><p>- {#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%)</p> | |