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Featured Maldet - Linux Malware Detect Addon (discussion)

Discussion in 'Add Ons' started by eva2000, Jul 17, 2014.

  1. eva2000

    eva2000 Administrator Staff Member

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    Nginx 1.25.x
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    Thanks for the heads up, must be something new as Centmin Mod hasn't had to install
    inotify-tools as yet and addons/maldet.sh doesn't have it. But my test install does have it installed ~ June 2021 last year so could be something overlooked.
    Code (Text):
    yum -q history list inotify-tools
    ID     | Command line             | Date and time    | Action(s)      | Altered
    -------------------------------------------------------------------------------
       803 | -y install inotify-tools | 2021-06-09 20:42 | Install        |    1 
    


     
  2. happyhacking

    happyhacking Premium Member Premium Member

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    1.22.0
    MariadDB 10.4.25
    It should be a new requirement since all of my old VPSs are missing inotify-tools and a brand new installation too
     
  3. Jon Snow

    Jon Snow Active Member

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    Nginx 1.13.9
    MariaDB 10.1.31
    Is this still the best malware scanner?

    I know you recommend 2-3 vCPUs but would this run with 1 vCPU if I only want to scan once and not periodically?

    Does this detect false positives for Wordpress and xenForo?
     
  4. eva2000

    eva2000 Administrator Staff Member

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    There's paid scanners but for free maldet is one of the better ones. No guarantee for false positives so you'd have to test yourself. By default quarantine mode is disabled so even if it's false positives it won't impact your apps. You'd have to be able to understand maldet reports when it reports of malware detection and then act accordingly to your specific web app.
     
  5. Jon Snow

    Jon Snow Active Member

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    Nginx 1.13.9
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    I'm fine with free for now. I've seen some of the paid options and they're $200/year per site.
    I guess the guide needs updating because it says:
     
  6. Jon Snow

    Jon Snow Active Member

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    Nginx 1.13.9
    MariaDB 10.1.31
    Wondering what this means:
    Code (Text):
    /usr/local/maldetect/internals/functions: line 1040: 49701 Killed                  $nice_command $clamscan $clamopts --infected --no-summary -f $find_results > $clamscan_results 2>> $clamscan_log


    Under it, it says the scan was complete so I'm wondering if it got cut short from the 1 vCPU or if it finished successfully.

    Full info:

    Code (Text):
    maldet(49514): {scan} signatures loaded: 17637 (14801 MD5 | 2053 HEX | 783 YARA | 0 USER)
    maldet(49514): {scan} building file list for /home/nginx/domains/abc.com/public, this might take awhile...
    maldet(49514): {scan} setting nice scheduler priorities for all operations: cpunice 19 , ionice 6
    maldet(49514): {scan} file list completed in 1s, found 15066 files...
    maldet(49514): {scan} found clamav binary at /usr/bin/clamscan, using clamav scanner engine...
    maldet(49514): {scan} scan of /home/nginx/domains/abc.com/public (15066 files) in progress...
    /usr/local/maldetect/internals/functions: line 1040: 49701 Killed                  $nice_command $clamscan $clamopts --infected --no-summary -f $find_results > $clamscan_results 2>> $clamscan_log
    
    maldet(49514): {scan} scan completed on /home/nginx/domains/abc.com/public: files 15066, malware hits 0, cleaned hits 0, time 93s
    maldet(49514): {scan} scan report saved, to view run: maldet --report 230528-0457.49514
    
     
  7. happyhacking

    happyhacking Premium Member Premium Member

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    MariadDB 10.4.25
    maldet can slow down your server heavily, specially with 1 vCPU since every 5 minutes i guess scans for new files on filesystem tree, perhaps if you scan into low load hours or within a larger time between scans could work fine for you. Personally i had to disable it because the server got too slow every 5 minutes scan, and i was lazy to extend the scan period.
     
  8. Jon Snow

    Jon Snow Active Member

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    That's fine once it runs successfully. My plan is to do manual runs every now and again.
     
  9. Jon Snow

    Jon Snow Active Member

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    Nginx 1.13.9
    MariaDB 10.1.31
    Giving this a bump in case anyone knows.
     
  10. eva2000

    eva2000 Administrator Staff Member

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    Nginx 1.25.x
    MariaDB 10.x
    How much memory does system have? output for these 2 commands
    Code (Text):
    lscpu
    free -mlt
    
     
  11. Jon Snow

    Jon Snow Active Member

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    Nginx 1.13.9
    MariaDB 10.1.31
    Code (Text):
    lscpu
    Architecture:          x86_64
    CPU op-mode(s):        32-bit, 64-bit
    Byte Order:            Little Endian
    CPU(s):                1
    On-line CPU(s) list:   0
    Thread(s) per core:    1
    Core(s) per socket:    1
    Socket(s):             1
    NUMA node(s):          1
    Vendor ID:             AuthenticAMD
    CPU family:            23
    Model:                 1
    Model name:            AMD EPYC 7601 32-Core Processor
    Stepping:              2
    CPU MHz:               2199.998
    BogoMIPS:              4401.32
    Hypervisor vendor:     KVM
    Virtualization type:   full
    L1d cache:             64K
    L1i cache:             64K
    L2 cache:              512K
    L3 cache:              16384K
    NUMA node0 CPU(s):     0
    Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm rep_good nopl cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw perfctr_core ssbd ibpb vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 virt_ssbd arat arch_capabilities
    


    Code (Text):
    free -mlt
                  total        used        free      shared  buff/cache   available
    Mem:           1960         464         502         163         993        1069
    Low:           1960        1458         502
    High:             0           0           0
    Swap:           511         268         243
    Total:         2472         732         746
     
  12. eva2000

    eva2000 Administrator Staff Member

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    Local Time:
    8:27 PM
    Nginx 1.25.x
    MariaDB 10.x
    also post output for this command for memory metrics for past 7 days

    Code (Text):
    cminfo sar-mem
    

    and CPU metrics
    Code (Text):
    cminfo sar-cpu
    
     
  13. Jon Snow

    Jon Snow Active Member

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    Jun 30, 2017
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    Local Time:
    7:27 AM
    Nginx 1.13.9
    MariaDB 10.1.31
    Code (Text):
    cminfo sar-mem
    
    ------------------------------------------------------------------
     Memory Usage Daily Last 7 days (1 CPU Threads):
    ------------------------------------------------------------------
    
    May 31 2023 Memory
    Memory      min:
    kbmemfree:  100112.0   kbmemused:  908480.0   %memused:  45.2       kbbuffers:  27932.0   kbcached:  224916.0
    kbcommit:   1247324.0  %commit:    49.3       kbactive:  341348.0   kbinact:    320164.0  kbdirty:   0.0
    Memory      avg:
    kbmemfree:  397550.0   kbmemused:  1610358.0  %memused:  80.2       kbbuffers:  172025.4  kbcached:  846372.8
    kbcommit:   1345887.4  %commit:    53.2       kbactive:  715565.7   kbinact:    549696.8  kbdirty:   953.1
    Memory      max:
    kbmemfree:  1099428.0  kbmemused:  1907796.0  %memused:  95.0       kbbuffers:  327560.0  kbcached:  1084256.0
    kbcommit:   2671392.0  %commit:    105.5      kbactive:  1098184.0  kbinact:    936152.0  kbdirty:   9004.0
    Memory      95%:
    kbmemfree:  625453.8   kbmemused:  1828901.2  %memused:  91.1       kbbuffers:  205807.0  kbcached:  1008150.4
    kbcommit:   1590658.8  %commit:    62.8       kbactive:  839851.8   kbinact:    737108.0  kbdirty:   5061.8
    
    May 30 2023 Memory
    Memory      min:
    kbmemfree:  101928.0   kbmemused:  956852.0   %memused:  47.7       kbbuffers:  16228.0    kbcached:  166696.0
    kbcommit:   1248440.0  %commit:    49.3       kbactive:  402932.0   kbinact:    151756.0   kbdirty:   0.0
    Memory      avg:
    kbmemfree:  523255.9   kbmemused:  1484652.1  %memused:  73.9       kbbuffers:  145253.4   kbcached:  729731.7
    kbcommit:   1404726.6  %commit:    55.5       kbactive:  714249.6   kbinact:    433630.4   kbdirty:   951.4
    Memory      max:
    kbmemfree:  1051056.0  kbmemused:  1905980.0  %memused:  94.9       kbbuffers:  319384.0   kbcached:  1034524.0
    kbcommit:   2802480.0  %commit:    110.7      kbactive:  1179920.0  kbinact:    1067688.0  kbdirty:   7444.0
    Memory      95%:
    kbmemfree:  865467.2   kbmemused:  1805380.0  %memused:  89.9       kbbuffers:  195891.6   kbcached:  976276.8
    kbcommit:   1977990.0  %commit:    78.1       kbactive:  854079.6   kbinact:    881260.4   kbdirty:   5019.6
    
    May 29 2023 Memory
    Memory      min:
    kbmemfree:  112616.0   kbmemused:  1017328.0  %memused:  50.7      kbbuffers:  58088.0    kbcached:  373584.0
    kbcommit:   1246708.0  %commit:    49.2       kbactive:  294924.0  kbinact:    173576.0   kbdirty:   0.0
    Memory      avg:
    kbmemfree:  563678.1   kbmemused:  1444229.9  %memused:  71.9      kbbuffers:  155552.2   kbcached:  683270.7
    kbcommit:   1390961.1  %commit:    54.9       kbactive:  702537.3  kbinact:    402608.5   kbdirty:   956.2
    Memory      max:
    kbmemfree:  990580.0   kbmemused:  1895292.0  %memused:  94.4      kbbuffers:  367300.0   kbcached:  923460.0
    kbcommit:   2127528.0  %commit:    84.0       kbactive:  871096.0  kbinact:    1096332.0  kbdirty:   14204.0
    Memory      95%:
    kbmemfree:  850608.8   kbmemused:  1795960.8  %memused:  89.4      kbbuffers:  361794.0   kbcached:  894037.6
    kbcommit:   1994546.0  %commit:    78.8       kbactive:  863593.2  kbinact:    908500.0   kbdirty:   5122.8
    
    May 28 2023 Memory
    Memory      min:
    kbmemfree:  99380.0    kbmemused:  958352.0   %memused:  47.7      kbbuffers:  32980.0    kbcached:  201940.0
    kbcommit:   1180508.0  %commit:    46.6       kbactive:  140240.0  kbinact:    154584.0   kbdirty:   0.0
    Memory      avg:
    kbmemfree:  553970.1   kbmemused:  1453937.9  %memused:  72.4      kbbuffers:  150266.7   kbcached:  708150.2
    kbcommit:   1325042.3  %commit:    52.3       kbactive:  683529.8  kbinact:    430022.3   kbdirty:   1017.0
    Memory      max:
    kbmemfree:  1049556.0  kbmemused:  1908528.0  %memused:  95.1      kbbuffers:  363796.0   kbcached:  1085784.0
    kbcommit:   2111824.0  %commit:    83.4       kbactive:  928840.0  kbinact:    1012588.0  kbdirty:   19956.0
    Memory      95%:
    kbmemfree:  879168.4   kbmemused:  1787677.6  %memused:  89.0      kbbuffers:  298460.6   kbcached:  973393.4
    kbcommit:   1747226.2  %commit:    69.0       kbactive:  812490.4  kbinact:    740706.8   kbdirty:   4909.8
    
    May 27 2023 Memory
    Memory      min:
    kbmemfree:  113264.0   kbmemused:  1404864.0  %memused:  70.0      kbbuffers:  116844.0  kbcached:  550412.0
    kbcommit:   1180780.0  %commit:    46.6       kbactive:  599572.0  kbinact:    272212.0  kbdirty:   0.0
    Memory      avg:
    kbmemfree:  385718.3   kbmemused:  1622189.7  %memused:  80.8      kbbuffers:  172220.2  kbcached:  831229.7
    kbcommit:   1287577.1  %commit:    50.8       kbactive:  764642.6  kbinact:    485282.5  kbdirty:   858.4
    Memory      max:
    kbmemfree:  603044.0   kbmemused:  1894644.0  %memused:  94.4      kbbuffers:  369224.0  kbcached:  1012724.0
    kbcommit:   1850064.0  %commit:    73.1       kbactive:  927900.0  kbinact:    980212.0  kbdirty:   6788.0
    Memory      95%:
    kbmemfree:  532000.0   kbmemused:  1819412.8  %memused:  90.6      kbbuffers:  313308.4  kbcached:  929970.4
    kbcommit:   1493796.0  %commit:    59.0       kbactive:  878603.6  kbinact:    672312.8  kbdirty:   4774.0
    
    May 26 2023 Memory
    Memory      min:
    kbmemfree:  116848.0   kbmemused:  1400788.0  %memused:  69.8      kbbuffers:  103164.0  kbcached:  541812.0
    kbcommit:   1187356.0  %commit:    46.9       kbactive:  628248.0  kbinact:    257388.0  kbdirty:   20.0
    Memory      avg:
    kbmemfree:  383340.7   kbmemused:  1624567.3  %memused:  80.9      kbbuffers:  172231.3  kbcached:  834136.4
    kbcommit:   1304483.3  %commit:    51.5       kbactive:  772860.7  kbinact:    482779.9  kbdirty:   956.4
    Memory      max:
    kbmemfree:  607120.0   kbmemused:  1891060.0  %memused:  94.2      kbbuffers:  365164.0  kbcached:  1058812.0
    kbcommit:   1798076.0  %commit:    71.0       kbactive:  992920.0  kbinact:    871440.0  kbdirty:   7136.0
    Memory      95%:
    kbmemfree:  549538.4   kbmemused:  1789816.0  %memused:  89.1      kbbuffers:  308265.6  kbcached:  958548.4
    kbcommit:   1511528.8  %commit:    59.7       kbactive:  884229.6  kbinact:    654597.6  kbdirty:   5243.2
    
    May 25 2023 Memory
    Memory      min:
    kbmemfree:  124348.0   kbmemused:  1249920.0  %memused:  62.2      kbbuffers:  89888.0   kbcached:  365640.0
    kbcommit:   1175592.0  %commit:    46.4       kbactive:  363700.0  kbinact:    285456.0  kbdirty:   0.0
    Memory      avg:
    kbmemfree:  380596.2   kbmemused:  1627311.8  %memused:  81.0      kbbuffers:  170168.3  kbcached:  829473.1
    kbcommit:   1263665.6  %commit:    49.9       kbactive:  727098.8  kbinact:    500403.2  kbdirty:   669.5
    Memory      max:
    kbmemfree:  757988.0   kbmemused:  1883560.0  %memused:  93.8      kbbuffers:  382616.0  kbcached:  1042332.0
    kbcommit:   1797188.0  %commit:    71.0       kbactive:  857172.0  kbinact:    894440.0  kbdirty:   7520.0
    Memory      95%:
    kbmemfree:  549287.6   kbmemused:  1796457.6  %memused:  89.5      kbbuffers:  363345.6  kbcached:  984523.2
    kbcommit:   1510214.8  %commit:    59.6       kbactive:  820910.8  kbinact:    673800.8  kbdirty:   3386.8
    
    May 24 2023 Memory
    Memory      min:
    kbmemfree:  113032.0   kbmemused:  1077444.0  %memused:  53.7      kbbuffers:  47380.0    kbcached:  330388.0
    kbcommit:   973532.0   %commit:    38.5       kbactive:  331720.0  kbinact:    194064.0   kbdirty:   0.0
    Memory      avg:
    kbmemfree:  384669.3   kbmemused:  1623238.7  %memused:  80.8      kbbuffers:  187310.5   kbcached:  732246.9
    kbcommit:   1219844.8  %commit:    48.2       kbactive:  662381.4  kbinact:    509102.1   kbdirty:   1200.8
    Memory      max:
    kbmemfree:  930464.0   kbmemused:  1894876.0  %memused:  94.4      kbbuffers:  428552.0   kbcached:  1214372.0
    kbcommit:   2115196.0  %commit:    83.5       kbactive:  879368.0  kbinact:    1158796.0  kbdirty:   42704.0
    Memory      95%:
    kbmemfree:  584431.2   kbmemused:  1825271.2  %memused:  90.9      kbbuffers:  418220.0   kbcached:  966109.6
    kbcommit:   1558885.6  %commit:    61.6       kbactive:  799030.8  kbinact:    770116.8   kbdirty:   6084.8
    


    Code (Text):
    cminfo sar-cpu
    
    ------------------------------------------------------------------
     CPU Utilisation % Last 7 days (1 CPU Threads):
    ------------------------------------------------------------------
    %CPU  min:  %user:  0.23   %nice:  0.00   %system:  0.32   %iowait:  0.00  %steal:  0.00  %idle:  0.00
    %CPU  avg:  %user:  13.00  %nice:  0.09   %system:  3.00   %iowait:  0.10  %steal:  0.05  %idle:  83.76
    %CPU  max:  %user:  84.53  %nice:  46.80  %system:  38.48  %iowait:  6.78  %steal:  0.25  %idle:  99.37
    %CPU  50%:  %user:  9.47   %nice:  0.00   %system:  2.61   %iowait:  0.03  %steal:  0.04  %idle:  87.85
    %CPU  75%:  %user:  18.05  %nice:  0.00   %system:  3.71   %iowait:  0.06  %steal:  0.06  %idle:  92.86
    %CPU  90%:  %user:  27.28  %nice:  0.00   %system:  4.93   %iowait:  0.18  %steal:  0.09  %idle:  95.43
    %CPU  95%:  %user:  33.29  %nice:  0.00   %system:  5.90   %iowait:  0.32  %steal:  0.12  %idle:  96.59
    %CPU  99%:  %user:  57.20  %nice:  0.07   %system:  9.04   %iowait:  1.34  %steal:  0.17  %idle:  99.23
    
    ------------------------------------------------------------------
     CPU Utilisation % Daily Last 7 days (1 CPU Threads):
    ------------------------------------------------------------------
    May 31 2023 %CPU
    %CPU  min:  %user:  1.45   %nice:  0.00   %system:  0.90   %iowait:  0.01  %steal:  0.01  %idle:  25.76
    %CPU  avg:  %user:  10.45  %nice:  0.32   %system:  2.46   %iowait:  0.08  %steal:  0.03  %idle:  86.66
    %CPU  max:  %user:  46.15  %nice:  46.80  %system:  14.39  %iowait:  3.11  %steal:  0.07  %idle:  97.59
    %CPU  95%:  %user:  25.69  %nice:  0.00   %system:  4.58   %iowait:  0.24  %steal:  0.05  %idle:  96.19
    May 30 2023 %CPU
    %CPU  min:  %user:  1.36   %nice:  0.00   %system:  0.93   %iowait:  0.01  %steal:  0.01  %idle:  17.33
    %CPU  avg:  %user:  15.71  %nice:  0.16   %system:  3.30   %iowait:  0.10  %steal:  0.03  %idle:  80.70
    %CPU  max:  %user:  67.83  %nice:  43.12  %system:  22.33  %iowait:  3.32  %steal:  0.19  %idle:  97.66
    %CPU  95%:  %user:  48.88  %nice:  0.00   %system:  7.04   %iowait:  0.28  %steal:  0.04  %idle:  95.82
    May 29 2023 %CPU
    %CPU  min:  %user:  2.01   %nice:  0.00   %system:  1.01   %iowait:  0.01  %steal:  0.01  %idle:  7.81
    %CPU  avg:  %user:  13.76  %nice:  0.16   %system:  3.08   %iowait:  0.09  %steal:  0.03  %idle:  82.87
    %CPU  max:  %user:  79.67  %nice:  46.59  %system:  15.21  %iowait:  2.90  %steal:  0.09  %idle:  96.94
    %CPU  95%:  %user:  38.64  %nice:  0.00   %system:  6.26   %iowait:  0.30  %steal:  0.06  %idle:  95.64
    May 28 2023 %CPU
    %CPU  min:  %user:  0.93   %nice:  0.00   %system:  0.87   %iowait:  0.00  %steal:  0.00  %idle:  0.00
    %CPU  avg:  %user:  14.52  %nice:  0.19   %system:  3.39   %iowait:  0.14  %steal:  0.03  %idle:  81.73
    %CPU  max:  %user:  84.53  %nice:  39.92  %system:  38.48  %iowait:  2.92  %steal:  0.09  %idle:  98.15
    %CPU  95%:  %user:  38.75  %nice:  0.00   %system:  6.38   %iowait:  0.44  %steal:  0.05  %idle:  96.28
    May 27 2023 %CPU
    %CPU  min:  %user:  3.50   %nice:  0.00  %system:  1.58  %iowait:  0.01  %steal:  0.01  %idle:  51.48
    %CPU  avg:  %user:  13.08  %nice:  0.00  %system:  3.16  %iowait:  0.06  %steal:  0.05  %idle:  83.65
    %CPU  max:  %user:  41.58  %nice:  0.19  %system:  6.87  %iowait:  3.74  %steal:  0.12  %idle:  94.86
    %CPU  95%:  %user:  27.16  %nice:  0.00  %system:  4.75  %iowait:  0.12  %steal:  0.09  %idle:  92.66
    May 26 2023 %CPU
    %CPU  min:  %user:  3.95   %nice:  0.00  %system:  1.68  %iowait:  0.01  %steal:  0.03  %idle:  53.14
    %CPU  avg:  %user:  14.44  %nice:  0.00  %system:  3.47  %iowait:  0.07  %steal:  0.10  %idle:  81.93
    %CPU  max:  %user:  40.04  %nice:  0.18  %system:  7.24  %iowait:  1.41  %steal:  0.25  %idle:  94.26
    %CPU  95%:  %user:  29.34  %nice:  0.00  %system:  5.66  %iowait:  0.20  %steal:  0.18  %idle:  92.60
    May 25 2023 %CPU
    %CPU  min:  %user:  1.54   %nice:  0.00  %system:  0.83  %iowait:  0.01  %steal:  0.02  %idle:  41.58
    %CPU  avg:  %user:  10.36  %nice:  0.00  %system:  2.46  %iowait:  0.06  %steal:  0.06  %idle:  87.05
    %CPU  max:  %user:  52.87  %nice:  0.22  %system:  7.10  %iowait:  2.75  %steal:  0.15  %idle:  97.59
    %CPU  95%:  %user:  24.56  %nice:  0.00  %system:  4.69  %iowait:  0.19  %steal:  0.10  %idle:  96.58
    May 24 2023 %CPU
    %CPU  min:  %user:  0.23   %nice:  0.00  %system:  0.32   %iowait:  0.00  %steal:  0.02  %idle:  11.11
    %CPU  avg:  %user:  10.65  %nice:  0.00  %system:  2.43   %iowait:  0.18  %steal:  0.06  %idle:  86.67
    %CPU  max:  %user:  77.28  %nice:  0.19  %system:  13.86  %iowait:  6.78  %steal:  0.22  %idle:  99.37
    %CPU  95%:  %user:  31.88  %nice:  0.00  %system:  6.74   %iowait:  0.74  %steal:  0.11  %idle:  99.28
    
    
     
  14. eva2000

    eva2000 Administrator Staff Member

    51,705
    11,941
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,433
    Local Time:
    8:27 PM
    Nginx 1.25.x
    MariaDB 10.x
    Yeah cpu and memory usage at it's peak is hitting limits
     
  15. Jon Snow

    Jon Snow Active Member

    737
    150
    43
    Jun 30, 2017
    Ratings:
    +215
    Local Time:
    7:27 AM
    Nginx 1.13.9
    MariaDB 10.1.31
    Should I upgrade to the 8GB RAM 4 vCPU plan, run the scan and then downgrade?

    Or the single scan when I ran it failed? It's weird how it said it completed.