我能够通过SSH连接EC2实例
但是，在我遵循以下文章的第3步后，它仍然会失败并超时 https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/SSL-on-an-instance.html
从字面上看，我刚刚安装了ssl_mod并重新启动了实例，之后腻子无法再次访问该实例。
而且无法再访问EC2实例。
有什么办法解决这个问题？
-----系统日志------
[ 0.000000] Linux version 4.14.101-75.76.amzn1.x86_64 (mockbuild@gobi-build-60003) (gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC)) #1 SMP Tue Feb 19 18:14:51 UTC 2019
[ 0.000000] Command line: root=LABEL=/ console=tty1 console=ttyS0 selinux=0 nvme_core.io_timeout=4294967295 LANG=en_US.UTF-8 KEYTABLE=us
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009dfff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000003fffffff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000fc000000-0x00000000ffffffff] reserved
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.7 present.
[ 0.000000] DMI: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[ 0.000000] Hypervisor detected: Xen HVM
[ 0.000000] Xen version 4.2.
[ 0.000000] Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs.
[ 0.000000] Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks.
[ 0.000000] You might have to change the root device
[ 0.000000] from /dev/hd[a-d] to /dev/xvd[a-d]
[ 0.000000] in your root= kernel command line option
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] e820: last_pfn = 0x40000 max_arch_pfn = 0x400000000
[ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.000000] found SMP MP-table at [mem 0x000fbc50-0x000fbc5f] mapped at [ffffffffff240c50]
[ 0.000000] RAMDISK: [mem 0x37087000-0x37feffff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000EA020 000024 (v02 Xen )
[ 0.000000] ACPI: XSDT 0x00000000FC00E2A0 000054 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: FACP 0x00000000FC00DF60 0000F4 (v04 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: DSDT 0x00000000FC0021C0 00BD19 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] ACPI: FACS 0x00000000FC002180 000040
[ 0.000000] ACPI: FACS 0x00000000FC002180 000040
[ 0.000000] ACPI: APIC 0x00000000FC00E060 0000D8 (v02 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: HPET 0x00000000FC00E1B0 000038 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: WAET 0x00000000FC00E1F0 000028 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: SSDT 0x00000000FC00E220 000031 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] ACPI: SSDT 0x00000000FC00E260 000031 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000003fffffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x3ffde000-0x3fffffff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x000000003fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009dfff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x000000003fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000003fffffff]
[ 0.000000] ACPI: PM-Timer IO Port: 0xb008
[ 0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-47
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 low level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 low level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 low level)
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 15 CPUs, 14 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009e000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff]
[ 0.000000] e820: [mem 0x40000000-0xfbffffff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on Xen HVM
[ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.000000] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:15 nr_cpu_ids:15 nr_node_ids:1
[ 0.000000] percpu: Embedded 44 pages/cpu @ffff88803e200000 s140120 r8192 d31912 u262144
[ 0.000000] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes)
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 257928
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: root=LABEL=/ console=tty1 console=ttyS0 selinux=0 nvme_core.io_timeout=4294967295 LANG=en_US.UTF-8 KEYTABLE=us
[ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.000000] Memory: 988260K/1048180K available (8204K kernel code, 1920K rwdata, 2768K rodata, 2044K init, 3876K bss, 59920K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=15, Nodes=1
[ 0.000000] Kernel/User page tables isolation: enabled
[ 0.000000] ftrace: allocating 25766 entries in 101 pages
[ 0.004000] Hierarchical RCU implementation.
[ 0.004000] RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=15.
[ 0.004000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=15
[ 0.004000] NR_IRQS: 524544, nr_irqs: 952, preallocated irqs: 16
[ 0.004000] xen:events: Using 2-level ABI
[ 0.004000] xen:events: Xen HVM callback vector for event delivery is enabled
[ 0.004000] Console: colour VGA+ 80x25
[ 0.004000] console [tty1] enabled
[ 0.004000] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
[ 0.004000] console [ttyS0] enabled
[ 0.004000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 30580167144 ns
[ 0.008000] tsc: Fast TSC calibration using PIT
[ 0.020004] tsc: Detected 2399.921 MHz processor
[ 0.024009] Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.12 BogoMIPS (lpj=9600256)
[ 0.032003] pid_max: default: 32768 minimum: 301
[ 0.036018] ACPI: Core revision 20170728
[ 0.046999] ACPI: 3 ACPI AML tables successfully acquired and loaded
[ 0.052025] Security Framework initialized
[ 0.056038] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 0.060085] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.064019] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.072006] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.076233] mce: CPU supports 2 MCE banks
[ 0.080026] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024
[ 0.084002] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4
[ 0.092004] Spectre V2 : Mitigation: Full generic retpoline
[ 0.096002] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 0.100005] Speculative Store Bypass: Vulnerable
[ 0.113770] smpboot: Max logical packages: 15
[ 0.116757] x2apic: IRQ remapping doesn't support X2APIC mode
[ 0.120003] Switched APIC routing to physical flat.
[ 0.126535] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
[ 0.174541] clocksource: xen: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.180019] installing Xen timer for CPU 0
[ 0.188076] smpboot: CPU0: Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz (family: 0x6, model: 0x3f, stepping: 0x2)
[ 0.192033] cpu 0 spinlock event irq 53
[ 0.195817] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only.
[ 0.196036] Hierarchical SRCU implementation.
[ 0.200295] NMI watchdog: Perf event create on CPU 0 failed with -2
[ 0.204006] NMI watchdog: Perf NMI watchdog permanently disabled
[ 0.208185] smp: Bringing up secondary CPUs ...
[ 0.211932] smp: Brought up 1 node, 1 CPU
[ 0.212008] smpboot: Total of 1 processors activated (4800.12 BogoMIPS)
[ 0.216442] devtmpfs: initialized
[ 0.219675] x86/mm: Memory block size: 128MB
[ 0.220224] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.224020] futex hash table entries: 4096 (order: 6, 262144 bytes)
[ 0.228273] NET: Registered protocol family 16
[ 0.232242] cpuidle: using governor ladder
[ 0.236007] cpuidle: using governor menu
[ 0.239387] ACPI: bus type PCI registered
[ 0.240005] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.244347] PCI: Using configuration type 1 for base access
[ 0.250764] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.252194] ACPI: Added _OSI(Module Device)
[ 0.256011] ACPI: Added _OSI(Processor Device)
[ 0.260005] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.264007] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.271170] ACPI: Interpreter enabled
[ 0.272019] ACPI: (supports S0 S4 S5)
[ 0.275388] ACPI: Using IOAPIC for interrupt routing
[ 0.276049] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.280422] ACPI: Enabled 2 GPEs in block 00 to 0F
[ 0.334308] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.336012] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.340012] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.344020] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.349096] acpiphp: Slot [0] registered
[ 0.353056] acpiphp: Slot [3] registered
[ 0.356406] acpiphp: Slot [4] registered
[ 0.359996] acpiphp: Slot [5] registered
[ 0.360414] acpiphp: Slot [6] registered
[ 0.363957] acpiphp: Slot [7] registered
[ 0.364418] acpiphp: Slot [8] registered
[ 0.368008] acpiphp: Slot [9] registered
[ 0.371580] acpiphp: Slot [10] registered
[ 0.372415] acpiphp: Slot [11] registered
[ 0.375900] acpiphp: Slot [12] registered
[ 0.376411] acpiphp: Slot [13] registered
[ 0.380000] acpiphp: Slot [14] registered
[ 0.380427] acpiphp: Slot [15] registered
[ 0.384079] acpiphp: Slot [16] registered
[ 0.387800] acpiphp: Slot [17] registered
[ 0.388411] acpiphp: Slot [18] registered
[ 0.392000] acpiphp: Slot [19] registered
[ 0.392412] acpiphp: Slot [20] registered
[ 0.395992] acpiphp: Slot [21] registered
[ 0.396419] acpiphp: Slot [22] registered
[ 0.400000] acpiphp: Slot [23] registered
[ 0.400406] acpiphp: Slot [24] registered
[ 0.403896] acpiphp: Slot [25] registered
[ 0.404408] acpiphp: Slot [26] registered
[ 0.408261] acpiphp: Slot [27] registered
[ 0.411817] acpiphp: Slot [28] registered
[ 0.412417] acpiphp: Slot [29] registered
[ 0.416044] acpiphp: Slot [30] registered
[ 0.419707] acpiphp: Slot [31] registered
[ 0.420356] PCI host bridge to bus 0000:00
[ 0.423606] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 0.424009] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 0.428008] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 0.432006] pci_bus 0000:00: root bus resource [mem 0xf0000000-0xfbffffff window]
[ 0.436005] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.447197] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7]
[ 0.448006] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6]
[ 0.452004] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177]
[ 0.456004] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376]
[ 0.460733] * Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
[ 0.460733] * this clock source is slow. Consider trying other clock sources
[ 0.465592] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 0.476152] ACPI: PCI Interrupt Link [LNKA] (IRQs *5 10 11)
[ 0.480222] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 0.484220] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 0.488237] ACPI: PCI Interrupt Link [LNKD] (IRQs *5 10 11)
[ 0.511891] xen:balloon: Initialising balloon driver
[ 0.520142] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[ 0.524000] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 0.524010] pci 0000:00:02.0: vgaarb: bridge control possible
[ 0.528004] vgaarb: loaded
[ 0.531106] EDAC MC: Ver: 3.0.0
[ 0.532587] PCI: Using ACPI for IRQ routing
[ 0.536465] NetLabel: Initializing
[ 0.539477] NetLabel: domain hash size = 128
[ 0.540005] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 0.544024] NetLabel: unlabeled traffic allowed by default
[ 0.548042] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[ 0.552017] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.555868] hpet0: 3 comparators, 64-bit 62.500000 MHz counter
[ 0.558213] clocksource: Switched to clocksource xen
[ 0.568083] VFS: Disk quotas dquot_6.6.0
[ 0.573690] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.581819] pnp: PnP ACPI init
[ 0.586116] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved
[ 0.594537] system 00:01: [io 0x08a0-0x08a3] has been reserved
[ 0.601500] system 00:01: [io 0x0cc0-0x0ccf] has been reserved
[ 0.608222] system 00:01: [io 0x04d0-0x04d1] has been reserved
[ 0.612991] system 00:07: [io 0x10c0-0x1141] has been reserved
[ 0.617641] system 00:07: [io 0xb044-0xb047] has been reserved
[ 0.641810] pnp: PnP ACPI: found 8 devices
[ 0.651918] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 0.659212] NET: Registered protocol family 2
[ 0.662987] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.668084] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[ 0.672829] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.677593] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 0.684367] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 0.689599] NET: Registered protocol family 1
[ 0.693893] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 0.698659] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[ 0.703208] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[ 0.713135] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 0.723220] Unpacking initramfs...
[ 0.864063] random: fast init done
[ 0.968913] Freeing initrd memory: 15780K
[ 0.974092] audit: initializing netlink subsys (disabled)
[ 0.981075] Initialise system trusted keyrings
[ 0.984736] random: get_random_bytes called from key_alloc+0x209/0x430 with crng_init=1
[ 0.990943] Key type blacklist registered
[ 0.994506] audit: type=2000 audit(1551756108.573:1): state=initialized audit_enabled=0 res=1
[ 1.000910] workingset: timestamp_bits=36 max_order=18 bucket_order=0
[ 1.006273] zbud: loaded
[ 1.284352] Key type asymmetric registered
[ 1.287742] Asymmetric key parser 'x509' registered
[ 1.291498] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 1.297323] io scheduler noop registered (default)
[ 1.301463] xen:grant_table: Grant tables using version 1 layout
[ 1.305870] Grant table initialized
[ 1.309041] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
[ 1.313703] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 1.346384] 00:06: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 1.352887] xen_netfront: Initialising Xen virtual ethernet driver
[ 1.358641] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[ 1.366855] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 1.370698] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 1.375506] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[ 1.382858] rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0
[ 1.387621] rtc_cmos 00:02: alarms up to one day, 114 bytes nvram, hpet irqs
[ 1.392869] hidraw: raw HID events driver (C) Jiri Kosina
[ 1.397109] NET: Registered protocol family 17
[ 1.400947] sched_clock: Marking stable (1400624129, 0)->(2253558423, -852934294)
[ 1.407324] registered taskstats version 1
[ 1.411259] Loading compiled-in X.509 certificates
[ 1.415069] zswap: loaded using pool lzo/zbud
[ 1.520120] xenbus_probe_frontend: Device with no driver: device/vbd/51712
[ 1.525300] rtc_cmos 00:02: setting system clock to 2019-03-05 03:21:49 UTC (1551756109)
[ 1.533509] Freeing unused kernel memory: 2044K
[ 1.544082] Write protecting the kernel read-only data: 14336k
[ 1.548953] Freeing unused kernel memory: 2016K
[ 1.554984] Freeing unused kernel memory: 1328K
[ 1.575051] device-mapper: uevent: version 1.0.3
[ 1.579046] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
[ 1.589941] udevd[853]: starting version 173
[ 1.655508] SCSI subsystem initialized
[ 1.690059] Invalid max_queues (4), will use default max: 1.
[ 1.720512] scsi host0: ata_piix
[ 1.738747] blkfront: xvda: barrier or flush: disabled; persistent grants: disabled; indirect descriptors: enabled;
[ 1.747115] scsi host1: ata_piix
[ 1.750384] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc100 irq 14
[ 1.755294] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc108 irq 15
[ 1.785880] xvda: xvda1
growroot: NOCHANGE: disk=/dev/xvda partition=1: size=16773086, it cannot be grown
[ 1.992025] tsc: Refined TSC clocksource calibration: 2400.000 MHz
[ 1.996677] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x22983777dd9, max_idle_ns: 440795300422 ns
[ 2.007196] EXT4-fs (xvda1): mounted filesystem with ordered data mode. Opts: (null)
[ 2.017844] dracut: Mounted root filesystem /dev/xvda1
[ 2.054536] dracut: Switching root
[ 2.102376] random: init: uninitialized urandom read (12 bytes read)
答案 0 :(得分：0)
一对问题： 1.您正在使用什么操作系统？我假设使用Amazon Linux，但要确认... 2.您是否做过任何更改管理控制台中的安全组的操作？您的安全组/ VPC配置是什么？ 3.您是关闭实例然后重新打开实例，还是重新启动？您是如何做到的（命令或管理控制台操作）？ 4.在管理控制台中，您可以获取系统日志并粘贴到此处吗？
可能是： 1.您配置了防火墙，或者您的安全组不正确。 2.您关闭了具有自动分配的公共IP的实例。在这种情况下，IP将更改。 3.您所做的某些事情妨碍了系统服务，从而阻止了计算机启动。