From da22e2769a2ce6f8c5df7c412352a734a5ea4f92 Mon Sep 17 00:00:00 2001 From: DeadFire Date: Wed, 4 Mar 2015 13:17:38 +0800 Subject: [PATCH] =?UTF-8?q?20150304-1=20=E9=80=89=E9=A2=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...nd Maximum Supported RAM By Your System.md | 696 ++++++++++++++++++ ...returned error exit status 1' In Ubuntu.md | 45 ++ ...Your Network And Servers With Observium.md | 174 +++++ 3 files changed, 915 insertions(+) create mode 100644 sources/tech/20150304 Linux Basics--How To Find Maximum Supported RAM By Your System.md create mode 100644 sources/tech/20150304 Linux Basics--How To Fix 'E-- var cache apt archives subprocess new pre-removal script returned error exit status 1' In Ubuntu.md create mode 100644 sources/tech/20150304 Monitoring Your Network And Servers With Observium.md diff --git a/sources/tech/20150304 Linux Basics--How To Find Maximum Supported RAM By Your System.md b/sources/tech/20150304 Linux Basics--How To Find Maximum Supported RAM By Your System.md new file mode 100644 index 0000000000..2fed06677b --- /dev/null +++ b/sources/tech/20150304 Linux Basics--How To Find Maximum Supported RAM By Your System.md @@ -0,0 +1,696 @@ +Linux Basics: How To Find Maximum Supported RAM By Your System +================================================================================ +![](https://1102047360.rsc.cdn77.org/wp-content/uploads/2015/02/RAM-790x527.jpg) + +Mostly, you will find maximum supported RAM by your system from the BIOS, Product catalog, or manuals. Here is the simple, yet useful trick, to find out maximum supported RAM using Dmidecode without opening the system chassis or referring the BIOS, product catalogs. + +### What is Dmidecode? ### + +As you may know, **Dmidecode** is a tool for dumping a computer’s DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system’s hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. Using Dmidecode, you can retrieve this information without having to probe for the actual hardware. + +### Find out the maximum RAM supported by your system ### + +Make sure you have installed dmidecode on your system. I think it will be automatically installed while installing your OS, but I am not sure though. + +**On Deb based system:** + + sudo apt-get install dmidecode + +**On RPM based system:** + + sudo yum install dmidecode + +**On SUSE/openSUSE:** + + sudo zypper in dmidecode + +Well, we installed dmidecode. Let us find out the maximum RAM supported. To do that, enter the following command: + + sudo dmidecode -t 16 + +**Sample output:** + + # dmidecode 2.12 + SMBIOS 2.6 present. + + Handle 0x0014, DMI type 16, 15 bytes + Physical Memory Array + Location: System Board Or Motherboard + Use: System Memory + Error Correction Type: None + Maximum Capacity: 16 GB + Error Information Handle: Not Provided + Number Of Devices: 2 + +As you see in the above output, my system will support RAM upto 16GB, and it has two RAM slots. Pretty easy, isn’t it? + +Well, let us find out the currently installed RAM details. + + sudo dmidecode -t 17 + +**Sample output:** + + # dmidecode 2.12 + SMBIOS 2.6 present. + + Handle 0x0017, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: Unknown + Data Width: Unknown + Size: No Module Installed + Form Factor: DIMM + Set: None + Locator: DIMM_B + Bank Locator: BANK 2 + Type: Unknown + Type Detail: None + Speed: Unknown + Manufacturer: Not Specified + Serial Number: Not Specified + Asset Tag: Not Specified + Part Number: Not Specified + Rank: Unknown + + Handle 0x0015, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: 64 bits + Data Width: 64 bits + Size: 4096 MB + Form Factor: SODIMM + Set: None + Locator: DIMM_A + Bank Locator: BANK 0 + Type: DDR3 + Type Detail: Synchronous + Speed: 1067 MHz + Manufacturer: 014F + Serial Number: 00092AF2 + Asset Tag: 54114000 + Part Number: JM1066KSN-4G + Rank: Unknown + +As per the above output, I have installed one RAM in DIMM slot 1. The RAM size is **4GB**, and it’s type and speed is **DDR3** and **1067 MHz** respectively. + +Also, we can have the complete RAM details using the following commands. + + sudo dmidecode -t memory + sudo dmidecode -t memory | less + sudo dmidecode -t memory | more + +**Sample output:** + + # dmidecode 2.12 + SMBIOS 2.6 present. + + Handle 0x0014, DMI type 16, 15 bytes + Physical Memory Array + Location: System Board Or Motherboard + Use: System Memory + Error Correction Type: None + Maximum Capacity: 16 GB + Error Information Handle: Not Provided + Number Of Devices: 2 + + Handle 0x0017, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: Unknown + Data Width: Unknown + Size: No Module Installed + Form Factor: DIMM + Set: None + Locator: DIMM_B + Bank Locator: BANK 2 + Type: Unknown + Type Detail: None + Speed: Unknown + Manufacturer: Not Specified + Serial Number: Not Specified + Asset Tag: Not Specified + Part Number: Not Specified + Rank: Unknown + + Handle 0x0015, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: 64 bits + Data Width: 64 bits + Size: 4096 MB + Form Factor: SODIMM + Set: None + Locator: DIMM_A + Bank Locator: BANK 0 + Type: DDR3 + Type Detail: Synchronous + Speed: 1067 MHz + Manufacturer: 014F + Serial Number: 00092AF2 + Asset Tag: 54114000 + Part Number: JM1066KSN-4G + Rank: Unknown + +Curious to know the complete system details such as Motherboard, Memory, Bios etc? Well, enter the following command to get all details. + + sudo dmidecode + +**Sample output:** + + # dmidecode 2.12 + SMBIOS 2.6 present. + 48 structures occupying 2173 bytes. + Table at 0x000EB840. + + Handle 0xDA00, DMI type 218, 251 bytes + OEM-specific Type + Header and Data: + DA FB 00 DA B2 00 0D 5F 0F 37 40 7D 00 00 00 00 + 00 7E 00 01 00 00 00 DC 01 00 80 02 00 DD 01 00 + 80 03 00 75 01 01 80 01 00 76 01 02 80 01 00 2D + 01 03 80 01 00 2E 01 03 80 00 00 81 01 07 80 00 + 00 82 01 07 80 01 00 83 01 08 80 00 00 84 01 08 + 80 01 00 85 01 06 80 00 00 86 01 06 80 01 00 58 + 02 05 80 00 00 57 02 05 80 01 00 9C 00 02 00 01 + 00 9B 00 02 00 00 00 8A 01 03 00 01 00 89 01 03 + 00 00 00 7F 01 04 00 00 00 80 01 04 00 01 00 53 + 01 05 00 00 00 52 01 05 00 01 00 7B 01 06 00 00 + 00 7C 01 06 00 01 00 94 01 07 00 00 00 93 01 07 + 00 01 00 7D 00 08 00 00 00 2D 00 09 00 01 00 2E + 00 09 00 00 00 6E 00 0A 00 00 00 95 00 0B 00 01 + 00 96 00 0B 00 00 00 2F 02 0C 00 01 00 30 02 0C + 00 00 00 50 02 0D 00 00 00 51 02 0D 00 01 00 52 + 02 0D 00 02 00 FF FF 00 00 00 00 + + Handle 0xDA01, DMI type 218, 59 bytes + OEM-specific Type + Header and Data: + DA 3B 01 DA B2 00 0D 5F 0F 37 40 53 02 0D 00 03 + 00 54 02 0D 00 04 00 56 02 0D 00 05 00 4B 01 0E + 00 01 00 4A 01 0E 00 00 00 EA 00 0F 00 01 00 EB + 00 0F 00 00 00 FF FF 00 00 00 00 + + Handle 0x0004, DMI type 4, 42 bytes + Processor Information + Socket Designation: CPU 1 + Type: Central Processor + Family: Core i3 + Manufacturer: Intel + ID: A7 06 03 01 FF FB AB BE + Signature: Type 0, Family 6, Model 42, Stepping 7 + Flags: + FPU (Floating-point unit on-chip) + VME (Virtual mode extension) + DE (Debugging extension) + PSE (Page size extension) + TSC (Time stamp counter) + MSR (Model specific registers) + PAE (Physical address extension) + MCE (Machine check exception) + CX8 (CMPXCHG8 instruction supported) + APIC (On-chip APIC hardware supported) + SEP (Fast system call) + MTRR (Memory type range registers) + PGE (Page global enable) + MCA (Machine check architecture) + CMOV (Conditional move instruction supported) + PAT (Page attribute table) + PSE-36 (36-bit page size extension) + CLFSH (CLFLUSH instruction supported) + DS (Debug store) + ACPI (ACPI supported) + MMX (MMX technology supported) + FXSR (FXSAVE and FXSTOR instructions supported) + SSE (Streaming SIMD extensions) + SSE2 (Streaming SIMD extensions 2) + SS (Self-snoop) + HTT (Multi-threading) + TM (Thermal monitor supported) + PBE (Pending break enabled) + Version: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz + Voltage: 1.1 V + External Clock: 100 MHz + Max Speed: 2300 MHz + Current Speed: 2300 MHz + Status: Populated, Enabled + Upgrade: Other + L1 Cache Handle: 0x0005 + L2 Cache Handle: 0x0006 + L3 Cache Handle: 0x0007 + Serial Number: To Be Filled By O.E.M. + Asset Tag: To Be Filled By O.E.M. + Part Number: To Be Filled By O.E.M. + Core Count: 2 + Core Enabled: 1 + Thread Count: 2 + Characteristics: + 64-bit capable + + Handle 0x0005, DMI type 7, 19 bytes + Cache Information + Socket Designation: L1-Cache + Configuration: Enabled, Not Socketed, Level 1 + Operational Mode: Write Back + Location: Internal + Installed Size: 64 kB + Maximum Size: 64 kB + Supported SRAM Types: + Other + Installed SRAM Type: Other + Speed: Unknown + Error Correction Type: None + System Type: Unified + Associativity: 8-way Set-associative + + Handle 0x0006, DMI type 7, 19 bytes + Cache Information + Socket Designation: L2-Cache + Configuration: Enabled, Not Socketed, Level 2 + Operational Mode: Varies With Memory Address + Location: Internal + Installed Size: 512 kB + Maximum Size: 512 kB + Supported SRAM Types: + Other + Installed SRAM Type: Other + Speed: Unknown + Error Correction Type: None + System Type: Unified + Associativity: 8-way Set-associative + + Handle 0x0007, DMI type 7, 19 bytes + Cache Information + Socket Designation: L3-Cache + Configuration: Enabled, Not Socketed, Level 3 + Operational Mode: Varies With Memory Address + Location: Internal + Installed Size: 3072 kB + Maximum Size: 3072 kB + Supported SRAM Types: + Other + Installed SRAM Type: Other + Speed: Unknown + Error Correction Type: None + System Type: Unified + Associativity: Other + + Handle 0x0008, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J1A1 + Internal Connector Type: None + External Reference Designator: PS2Mouse + External Connector Type: PS/2 + Port Type: Mouse Port + + Handle 0x0009, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J1A1 + Internal Connector Type: None + External Reference Designator: Keyboard + External Connector Type: PS/2 + Port Type: Keyboard Port + + Handle 0x000A, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J2A2B + Internal Connector Type: None + External Reference Designator: Video + External Connector Type: DB-15 female + Port Type: Video Port + + Handle 0x000B, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J3A1 + Internal Connector Type: None + External Reference Designator: USB1 + External Connector Type: Access Bus (USB) + Port Type: USB + + Handle 0x000C, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J3A1 + Internal Connector Type: None + External Reference Designator: USB2 + External Connector Type: Access Bus (USB) + Port Type: USB + + Handle 0x000D, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J3A1 + Internal Connector Type: None + External Reference Designator: USB3 + External Connector Type: Access Bus (USB) + Port Type: USB + + Handle 0x000E, DMI type 8, 9 bytes + Port Connector Information + Internal Reference Designator: J5A1 + Internal Connector Type: None + External Reference Designator: LAN + External Connector Type: RJ-45 + Port Type: Network Port + + Handle 0x000F, DMI type 9, 17 bytes + System Slot Information + Designation: J6B2 + Type: x16 PCI Express + Current Usage: In Use + Length: Long + ID: 0 + Characteristics: + 3.3 V is provided + Opening is shared + PME signal is supported + Bus Address: 0000:00:01.0 + + Handle 0x0010, DMI type 9, 17 bytes + System Slot Information + Designation: J6B1 + Type: x1 PCI Express + Current Usage: In Use + Length: Short + ID: 1 + Characteristics: + 3.3 V is provided + Opening is shared + PME signal is supported + Bus Address: 0000:00:1c.3 + + Handle 0x0012, DMI type 11, 5 bytes + OEM Strings + String 1: Dell System + String 2: 5[0003] + String 3: 13[P18F] + + Handle 0x0013, DMI type 12, 5 bytes + System Configuration Options + Option 1: To Be Filled By O.E.M. + + Handle 0x001C, DMI type 21, 7 bytes + Built-in Pointing Device + Type: Touch Pad + Interface: Bus Mouse + Buttons: 2 + + Handle 0x001D, DMI type 22, 26 bytes + Portable Battery + Location: Sys. Battery Bay + Manufacturer: Sanyo + Serial Number: 5390 + Name: DELL 4YRJH22 + Chemistry: Lithium Ion + Design Capacity: 45000 mWh + Design Voltage: 10800 mV + SBDS Version: 1.0 + Maximum Error: 2% + SBDS Manufacture Date: 2012-02-28 + OEM-specific Information: 0x00000001 + + Handle 0x001E, DMI type 32, 20 bytes + System Boot Information + Status: No errors detected + + Handle 0x0020, DMI type 27, 12 bytes + Cooling Device + Type: Fan + Status: OK + OEM-specific Information: 0x00000000 + + Handle 0x0021, DMI type 28, 20 bytes + Temperature Probe + Description: CPU Internal Temperature + Location: Processor + Status: OK + Maximum Value: 127.0 deg C + Minimum Value: 0.0 deg C + Resolution: 1.000 deg C + Tolerance: 0.5 deg C + Accuracy: Unknown + OEM-specific Information: 0x00000000 + + Handle 0xB000, DMI type 176, 5 bytes + OEM-specific Type + Header and Data: + B0 05 00 B0 00 + + Handle 0xB100, DMI type 177, 12 bytes + OEM-specific Type + Header and Data: + B1 0C 00 B1 1A 0E 00 00 00 00 00 00 + + Handle 0x0025, DMI type 209, 12 bytes + OEM-specific Type + Header and Data: + D1 0C 25 00 00 00 00 03 05 01 00 03 + + Handle 0x0026, DMI type 210, 12 bytes + OEM-specific Type + Header and Data: + D2 0C 26 00 00 00 00 03 05 20 01 03 + + Handle 0x0027, DMI type 211, 13 bytes + OEM-specific Type + Header and Data: + D3 0D 27 00 01 00 00 00 00 02 03 04 04 + Strings: + Front + + Handle 0x0028, DMI type 212, 57 bytes + OEM-specific Type + Header and Data: + D4 39 28 00 70 00 71 00 01 49 50 48 9C 00 49 FC + 01 9B 00 49 FC 00 7F 01 4A FB 04 80 01 4A FB 00 + 53 01 4A F7 08 52 01 4A F7 08 7B 01 4A EF 10 7C + 01 4A EF 10 FF FF 00 00 00 + + Handle 0x002A, DMI type 217, 8 bytes + OEM-specific Type + Header and Data: + D9 08 2A 00 01 02 00 00 + Strings: + + Handle 0x002B, DMI type 219, 11 bytes + OEM-specific Type + Header and Data: + DB 0B 2B 00 00 01 02 03 00 04 05 + Strings: + + Handle 0x002C, DMI type 220, 22 bytes + OEM-specific Type + Header and Data: + DC 16 2C 00 01 F0 00 00 02 F0 00 00 00 00 03 F0 + 04 F0 00 00 00 00 + + Handle 0x002D, DMI type 221, 19 bytes + OEM-specific Type + Header and Data: + DD 13 2D 00 00 00 00 00 00 03 00 00 00 00 00 00 + 00 00 00 + + Handle 0x002E, DMI type 222, 16 bytes + OEM-specific Type + Header and Data: + DE 10 2E 00 01 08 FF FF 00 00 00 00 00 00 00 00 + + Handle 0x0014, DMI type 16, 15 bytes + Physical Memory Array + Location: System Board Or Motherboard + Use: System Memory + Error Correction Type: None + Maximum Capacity: 16 GB + Error Information Handle: Not Provided + Number Of Devices: 2 + + Handle 0x0016, DMI type 20, 19 bytes + Memory Device Mapped Address + Starting Address: 0x00000000000 + Ending Address: 0x000FFFFFFFF + Range Size: 4 GB + Physical Device Handle: 0x0015 + Memory Array Mapped Address Handle: 0x0018 + Partition Row Position: 1 + Interleave Position: 1 + Interleaved Data Depth: 1 + + Handle 0x0017, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: Unknown + Data Width: Unknown + Size: No Module Installed + Form Factor: DIMM + Set: None + Locator: DIMM_B + Bank Locator: BANK 2 + Type: Unknown + Type Detail: None + Speed: Unknown + Manufacturer: Not Specified + Serial Number: Not Specified + Asset Tag: Not Specified + Part Number: Not Specified + Rank: Unknown + + Handle 0x0018, DMI type 19, 15 bytes + Memory Array Mapped Address + Starting Address: 0x00000000000 + Ending Address: 0x000FFFFFFFF + Range Size: 4 GB + Physical Array Handle: 0x0014 + Partition Width: 2 + + Handle 0x002F, DMI type 13, 22 bytes + BIOS Language Information + Language Description Format: Abbreviated + Installable Languages: 1 + eng + Currently Installed Language: eng + + Handle 0x0030, DMI type 131, 64 bytes + OEM-specific Type + Header and Data: + 83 40 30 00 31 00 00 00 00 00 00 00 00 00 00 00 + F8 00 4B 1C FF FF FF FF 01 00 00 00 00 00 07 00 + AD 04 04 00 00 00 00 00 C8 00 FF FF 00 00 00 00 + 00 00 00 00 32 00 00 00 76 50 72 6F 00 00 00 00 + + Handle 0x0029, DMI type 216, 9 bytes + OEM-specific Type + Header and Data: + D8 09 29 00 01 02 01 00 00 + Strings: + INTEL + 0000 + + Handle 0x0000, DMI type 0, 24 bytes + BIOS Information + Vendor: Dell Inc. + Version: A05 + Release Date: 08/03/2012 + Address: 0xF0000 + Runtime Size: 64 kB + ROM Size: 2048 kB + Characteristics: + MCA is supported + PCI is supported + BIOS is upgradeable + BIOS shadowing is allowed + ESCD support is available + Boot from CD is supported + Selectable boot is supported + BIOS ROM is socketed + EDD is supported + 5.25"/1.2 MB floppy services are supported (int 13h) + 3.5"/720 kB floppy services are supported (int 13h) + 3.5"/2.88 MB floppy services are supported (int 13h) + Print screen service is supported (int 5h) + 8042 keyboard services are supported (int 9h) + Serial services are supported (int 14h) + Printer services are supported (int 17h) + CGA/mono video services are supported (int 10h) + ACPI is supported + USB legacy is supported + ATAPI Zip drive boot is supported + BIOS boot specification is supported + Targeted content distribution is supported + BIOS Revision: 0.5 + Firmware Revision: 0.5 + + Handle 0x0002, DMI type 2, 15 bytes + Base Board Information + Manufacturer: Dell Inc. + Product Name: 01HXXJ + Version: A05 + Serial Number: .JSQ7PA1.CN7117623M00J2. + Asset Tag: Not Specified + Features: + Board is a hosting board + Board is replaceable + Location In Chassis: To Be Filled By O.E.M. + Chassis Handle: 0x0003 + Type: Motherboard + Contained Object Handles: 0 + + Handle 0x0003, DMI type 3, 21 bytes + Chassis Information + Manufacturer: Dell Inc. + Type: Portable + Lock: Not Present + Version: Not Specified + Serial Number: JSR1 + Asset Tag: Not Specified + Boot-up State: Safe + Power Supply State: Safe + Thermal State: Safe + Security Status: None + OEM Information: 0x00000000 + Height: Unspecified + Number Of Power Cords: 1 + Contained Elements: 0 + + Handle 0x0001, DMI type 1, 27 bytes + System Information + Manufacturer: Dell Inc. + Product Name: Inspiron N5050 + Version: Not Specified + Serial Number: JSR1 + UUID: 4C4C4544-0053-5110-8029-CAC05241 + Wake-up Type: Power Switch + SKU Number: To be filled by O.E.M. + Family: + + Handle 0x0024, DMI type 208, 12 bytes + OEM-specific Type + Header and Data: + D0 0C 24 00 02 05 FE 00 04 05 01 02 + Strings: + 20120323 + 20120323 + + Handle 0x0011, DMI type 10, 6 bytes + On Board Device Information + Type: Video + Status: Enabled + Description: Mobile Intel SandyBridge HD Graphics + + Handle 0x0015, DMI type 17, 28 bytes + Memory Device + Array Handle: 0x0014 + Error Information Handle: 0x0000 + Total Width: 64 bits + Data Width: 64 bits + Size: 4096 MB + Form Factor: SODIMM + Set: None + Locator: DIMM_A + Bank Locator: BANK 0 + Type: DDR3 + Type Detail: Synchronous + Speed: 1067 MHz + Manufacturer: 014F + Serial Number: 0009F2 + Asset Tag: 54114000 + Part Number: JM1066-4G + Rank: Unknown + + Handle 0x0031, DMI type 127, 4 bytes + End Of Table + +That’s it. Happy weekend. Stay happy! + +-------------------------------------------------------------------------------- + +via: https://www.unixmen.com/linux-basics-how-to-find-maximum-supported-ram-by-your-system/ + +作者：[SK][a] +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 + +[a]:https://www.unixmen.com/author/sk/ \ No newline at end of file diff --git a/sources/tech/20150304 Linux Basics--How To Fix 'E-- var cache apt archives subprocess new pre-removal script returned error exit status 1' In Ubuntu.md b/sources/tech/20150304 Linux Basics--How To Fix 'E-- var cache apt archives subprocess new pre-removal script returned error exit status 1' In Ubuntu.md new file mode 100644 index 0000000000..f3f262dfbc --- /dev/null +++ b/sources/tech/20150304 Linux Basics--How To Fix 'E-- var cache apt archives subprocess new pre-removal script returned error exit status 1' In Ubuntu.md @@ -0,0 +1,45 @@ +Linux Basics: How To Fix “E: /var/cache/apt/archives/ subprocess new pre-removal script returned error exit status 1″ In Ubuntu +================================================================================ +![](https://1102047360.rsc.cdn77.org/wp-content/uploads/2014/04/ubuntu-790x558.png) + +Today, I got a problem while updating VirtualBox to the latest version. + +> E: /var/cache/apt/archives/ subprocess new pre-removal script returned error exit status 1 + +![](https://www.unixmen.com/wp-content/uploads/2015/03/Update-Manager_0011.png) + +### Solution: ### + +I googled a bit and found the solution. Here is what I did to solve the problem. + + sudo apt-get clean + sudo apt-get update && sudo apt-get upgrade + +This will almost fix the problem. + +If you still end up with the same error, then try the following commands: + + sudo dpkg --configure -a + sudo apt-get -f install + +Or, you can manually download the latest version from [Oracle VirtualBox][1] site and install it as shown below. + + sudo apt-get update + sudo dpkg -i virtualbox-4.3_4.3.24-98716~Ubuntu~raring_amd64.deb + sudo apt-get -f install + sudo apt-get autoclean && sudo apt-get autoremove + +Cheers! + +-------------------------------------------------------------------------------- + +via: https://www.unixmen.com/linux-basics-how-to-fix-e-varcacheaptarchives-subprocess-new-pre-removal-script-returned-error-exit-status-1-in-ubuntu/ + +作者：[SK][a] +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 + +[a]:https://www.unixmen.com/author/sk/ +[1]:https://www.virtualbox.org/wiki/Downloads \ No newline at end of file diff --git a/sources/tech/20150304 Monitoring Your Network And Servers With Observium.md b/sources/tech/20150304 Monitoring Your Network And Servers With Observium.md new file mode 100644 index 0000000000..4eae05d99d --- /dev/null +++ b/sources/tech/20150304 Monitoring Your Network And Servers With Observium.md @@ -0,0 +1,174 @@ +Monitoring Your Network And Servers With Observium +================================================================================ +### Introduction ### + +You have a problem while monitoring your servers, switches or physical machines. **Observium** fits your need. As a free monitoring system, it helps you to monitor your servers remotely. It is an auto-discovering SNMP based network monitoring platform written in PHP which includes support for a wide range of network hardware and operating systems including Cisco, Windows, Linux, HP, NetApp and many other. I will give you the steps to follow while setting up an **Observium** server on Ubuntu 12.04. + +![](https://www.unixmen.com/wp-content/uploads/2015/03/Capture1.png) + +Currently there are two different versions of **observium**. + +- The observium Community is a free tool and licensed under the QPL Open Source license. This version is the best solution for small deployments. It gets security updates each 6 months. +- While the second version, the Observium Professional is distributed under SVN based release mechanism. And it gets daily security updates. This tool is the best for Service Provider and enterprises deployments. + +For more information you can visit the offcial [website of Observium][1]. + +### System Requirements ### + +In order to install **Observium** , it’s necessary to have a server with a fresh installation. The development of **Observium** takes place on Ubuntu LTS and Debian systems, so it’s recommended to install **Observium** on Ubuntu or Debian because may be issues with other platforms. + +This article will guide you on how to install **Observium** on Ubuntu 12.04. For a small **Observium** installation is recommended to use 256MB for the memory and dual core for the process. + +### Installing Prerequisites ### + +Before installing **Observium** you need to make sure to install all dependencies. + +First step is to update your server + + sudo apt-get update + +Then you need to install all packages required to run Observium. + +Observuim need this list of software the run correctly: + +- LAMP server +- fping +- Net-SNMP 5.4+ +- RRDtool 1.3+ +- Graphviz + +Requirements for optional features: + +- Ipmitool – Only if you want to poll IPMI baseboard controllers on servers +- Libvirt-bin – Only if you want to monitor remote VM hosts using libvirt + + sudo apt-get install libapache2-mod-php5 php5-cli php5-mysql php5-gd php5-mcrypt php5-json php-pear snmp fping mysql-server mysql-client python-mysqldb rrdtool subversion whois mtr-tiny ipmitool graphviz imagemagick libvirt ipmitool + +### Creation MySQL Database and User for Observium ### + +Now you need to log into MySQL and create database for **Observuim**: + + mysql -u root -p + +After successful authenticated, you need to create the database. + + CREATE DATABASE observium; + +The database Name is **Observium**. You will need this information later. + +Now, you should create the database administrator. + + CREATE USER observiumadmin@localhost IDENTIFIED BY 'observiumpassword'; + +Next, you need to give this user permissions to administer the database you created. + + GRANT ALL PRIVILEGES ON observium.* TO observiumadmin@localhost; + +You need to flush the privilege information to disk to activate the new MySQL user: + + FLUSH PRIVILEGES; + exit + +### Downloading and Installing Observium ### + +Now that our system is ready, we can start the installation of Observium. + +First step to do is, creating the directory Observium is going to operate out of: + + mkdir -p /opt/observium && cd /opt + +For the purpose of this tutorial, we’re going to be using the Community/Open Source Edition of Observium. Download and unpack it. + + wget http://www.observium.org/observium-community-latest.tar.gz + tar zxvf observium-community-latest.tar.gz + +Now go under Observium directory + + cd observium + +Copy the default configuration file ‘**config.php.default**‘ to ‘**config.php**‘ and fill out the database config options: + + cp config.php.default config.php + nano config.php + +---------- + + / Database config + $config['db_host'] = 'localhost'; + $config['db_user'] = 'observiumadmin'; + $config['db_pass'] = 'observiumpassword'; + $config['db_name'] = 'observium'; + +Let’s setup the default schema for the MySQL Database: + + php includes/update/update.php + +Now you need to create directory to store rrd file and change permission to let apache write into the file . + + mkdir rrd + chown apache:apache rrd + +To help you troubleshooting on case of problem, you need to create logs file. + + mkdir -p /var/log/observium + chown apache:apache /var/log/observium + +Now you have to create the virtual host configuration for Observium + + + DocumentRoot /opt/observium/html/ + ServerName observium.domain.com + CustomLog /var/log/observium/access_log combined + ErrorLog /var/log/observium/error_log + + AllowOverride All + Options FollowSymLinks MultiViews + + + +Next, you need to enable rewrite functionality for your Apache server. + +To enable `mod_rewrite` modules, type this command: + + sudo a2enmod rewrite + +This module will be enable the next after reboot of Apache service. + + sudo service apache2 restart + +### Configuring Observium ### + +Before log into the web interface, you need to create administrator account (level 10) to Observium + + # cd /opt/observium + # ./adduser.php admin adminpassword 10 + User admin added successfully. + +Next set a cron jobs for the discovery and the poller jobs, create a new file ‘**/etc/cron.d/observium**‘ and add the following contents. + + 33 */6 * * * root /opt/observium/discovery.php -h all >> /dev/null 2>&1 + */5 * * * * root /opt/observium/discovery.php -h new >> /dev/null 2>&1 + */5 * * * * root /opt/observium/poller-wrapper.py 1 >> /dev/null 2>&1 + +Reload cron process to take new entries. + + # /etc/init.d/cron reload + +You’ve installed Observium Server! Log into Observium using your browser **http://** and be on your way. + +![](https://www.unixmen.com/wp-content/uploads/2015/03/Capture.png) + +Enjoy! + +-------------------------------------------------------------------------------- + +via: https://www.unixmen.com/monitoring-network-servers-observium/ + +作者：[anismaj][a] +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 + +[a]:https://www.unixmen.com/author/anis/ +[1]:http://www.observium.org/ \ No newline at end of file