我试图找出为什么我的配备 CentOS 7 的英特尔 NUC 上的 WiFi 持续断线。据我所知，我有 5 个节点的 Hadoop 集群，它们的配置都是相同的（据我所知），但是，其他使用 WiFi 的机器不会崩溃。我不知道这台特定的机器出了什么问题。
这是来自 的错误/var/log/messages。这也是我经常看到的消息，因为我几天来一直在关注这个问题。
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Microcode SW error detected. Restarting 0x2000000.
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Status: 0x00000100, count: 6
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Loaded firmware version: 34.0.1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x000022CE | ADVANCED_SYSASSERT
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x05900280 | trm_hw_status0
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | trm_hw_status1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00023FDC | branchlink2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0003915A | interruptlink1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | interruptlink2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0000012C | data1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x03830000 | data2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xDEADBEEF | data3
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xD28011F1 | beacon time
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x72F4FDDD | tsf low
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000182 | tsf hi
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | time gp1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xCA511FA7 | time gp2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000001 | uCode revision type
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000022 | uCode version major
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | uCode version minor
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000230 | hw version
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00C89000 | board version
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0A96001C | hcmd
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xA7F93882 | isr0
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00050000 | isr1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0020180A | isr2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x40417DCD | isr3
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | isr4
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0A95001C | last cmd Id
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | wait_event
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00004288 | l2p_control
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00018024 | l2p_duration
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | l2p_mhvalid
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x000000EF | l2p_addr_match
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0000000D | lmpm_pmg_sel
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x30101345 | timestamp
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00007888 | flow_handler
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: Status: 0x00000100, count: 7
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000070 | ADVANCED_SYSASSERT
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | umac branchlink1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0086964 | umac branchlink2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac interruptlink1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac interruptlink2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000800 | umac data1
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac data2
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xDEADBEEF | umac data3
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000022 | umac major
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | umac minor
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC088628C | frame pointer
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC088628C | stack pointer
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00DF019C | last host cmd
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | isr status reg
Jan 2 08:41:06 mapr04 kernel: ieee80211 phy0: Hardware restart was requested
Jan 2 08:41:06 mapr04 kernel: iwlwifi 0000:3a:00.0: FW error in SYNC CMD STATISTICS_CMD
Jan 2 08:41:06 mapr04 kernel: CPU: 0 PID: 4898 Comm: NetworkManager Kdump: loaded Not tainted 3.10.0-957.1.3.el7.x86_64 #1
Jan 2 08:41:06 mapr04 kernel: Hardware name: Intel Corporation NUC7i7BNH/NUC7i7BNB, BIOS BNKBL357.86A.0049.2017.0724.1541 07/24/2017
Jan 2 08:41:06 mapr04 kernel: Call Trace:
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaeb61e41>] dump_stack+0x19/0x1b
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0afa983>] iwl_trans_pcie_send_hcmd+0x563/0x580 [iwlwifi]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae4c2d00>] ? wake_up_atomic_t+0x30/0x30
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0b060fc>] iwl_trans_send_cmd+0x5c/0xe0 [iwlwifi]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0c6d312>] iwl_mvm_send_cmd+0x32/0xb0 [iwlmvm]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0c6e632>] iwl_mvm_request_statistics+0x72/0x100 [iwlmvm]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0c616fe>] iwl_mvm_mac_sta_statistics+0xbe/0x100 [iwlmvm]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0bb68f7>] sta_set_sinfo+0xb7/0x800 [mac80211]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc0bcd052>] ieee80211_get_station+0x52/0x80 [mac80211]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffc08cae41>] nl80211_get_station+0xa1/0x240 [cfg80211]
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae794d0d>] ? list_del+0xd/0x30
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae5bdf1a>] ? __rmqueue+0x8a/0x460
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea77918>] genl_family_rcv_msg+0x208/0x430
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae5bf134>] ? free_one_page+0x2e4/0x310
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea77b9b>] genl_rcv_msg+0x5b/0xc0
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea73ec0>] ? __netlink_lookup+0xc0/0x110
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea77b40>] ? genl_family_rcv_msg+0x430/0x430
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea75bab>] netlink_rcv_skb+0xab/0xc0
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea760e8>] genl_rcv+0x28/0x40
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea75530>] netlink_unicast+0x170/0x210
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae78c042>] ? memcpy_fromiovec+0x62/0xb0
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea758d8>] netlink_sendmsg+0x308/0x420
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea73112>] ? netlink_recvmsg+0x212/0x490
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea193a6>] sock_sendmsg+0xb6/0xf0
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea194f5>] ? sock_recvmsg+0xc5/0x100
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea1a269>] ___sys_sendmsg+0x3e9/0x400
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae656fe0>] ? __pollwait+0xf0/0xf0
Jan 2 08:41:06 mapr04 kernel: [<ffffffffae68ee1e>] ? ep_poll+0x31e/0x360
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea1b921>] __sys_sendmsg+0x51/0x90
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaea1b972>] SyS_sendmsg+0x12/0x20
Jan 2 08:41:06 mapr04 kernel: [<ffffffffaeb74ddb>] system_call_fastpath+0x22/0x27
我应该从哪里开始尝试调试？我可以编辑原始帖子并进行更新。
以下是我认为可能有帮助的一些事情：
uname -a:
Linux mapr04.wired.carnoustie 3.10.0-957.1.3.el7.x86_64 #1 SMP Thu Nov 29 14:49:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
dmesg | grep iwlwifi:
[ 3.822041] iwlwifi 0000:3a:00.0: irq 132 for MSI/MSI-X
[ 3.831295] iwlwifi 0000:3a:00.0: loaded firmware version 34.0.1 op_mode iwlmvm
[ 3.924043] iwlwifi 0000:3a:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[ 3.984049] iwlwifi 0000:3a:00.0: base HW address: f8:94:c2:5c:07:24
这是最新的错误：
Here is the latest error:
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Error sending STATISTICS_CMD: time out after 2000ms.
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Current CMD queue read_ptr 246 write_ptr 247
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Status: 0x00000100, count: 6
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Loaded firmware version: 34.0.1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000084 | NMI_INTERRUPT_UNKNOWN
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000280 | trm_hw_status0
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | trm_hw_status1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00023FDC | branchlink2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0003915A | interruptlink1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0003915A | interruptlink2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | data1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000080 | data2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x03830000 | data3
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xD4C029D9 | beacon time
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x456535F1 | tsf low
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x000001BA | tsf hi
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | time gp1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x6D3BFE27 | time gp2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000001 | uCode revision type
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000022 | uCode version major
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | uCode version minor
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000230 | hw version
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00C89000 | board version
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0000001C | hcmd
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00012000 | isr0
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | isr1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0000180A | isr2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00417CC0 | isr3
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | isr4
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0A89001C | last cmd Id
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | wait_event
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00004288 | l2p_control
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00018024 | l2p_duration
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | l2p_mhvalid
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x000000EF | l2p_addr_match
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x0000000D | lmpm_pmg_sel
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x30101345 | timestamp
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00002838 | flow_handler
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Status: 0x00000100, count: 7
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000070 | ADVANCED_SYSASSERT
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | umac branchlink1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0086964 | umac branchlink2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac interruptlink1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac interruptlink2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000800 | umac data1
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC0083A94 | umac data2
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xDEADBEEF | umac data3
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000022 | umac major
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | umac minor
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC088628C | frame pointer
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0xC088628C | stack pointer
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00F6019C | last host cmd
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: 0x00000000 | isr status reg
Jan 5 03:17:01 mapr04 kernel: ieee80211 phy0: Hardware restart was requested
Jan 5 03:17:01 mapr04 kernel: iwlwifi 0000:3a:00.0: Microcode SW error detected. Restarting 0x2000000.
答案1
wifi 驱动程序似乎无法管理 NUC 中的 wifi 硬件。
多个 Linux 发行版无需安装即可直接试用。我认为 NUC 具有 Intel wifi，它应该与内置的 Linux 驱动程序一起使用，但它们必须足够新。
我有一台配备英特尔第六代硬件的 NUC。我注意到旧版本的操作系统无法管理 wifi 硬件，但新版本可以管理它，无需任何调整，“开箱即用”。
- 编辑 1：我使用实时系统进行了测试：Ubuntu 18.04.1 LTS 可以管理我的 NUC6i3SYH 的有线和无线硬件。 Debian 9，Stretch，可以自动管理有线网络。我的 wifi 失败了，但其他人可能会修复它（我不知道是否存在驱动程序问题，或者我是否无法在 Debian 中管理 wifi 的用户界面。）
- 编辑 2：我下载
CentOS-7-x86_64-LiveGNOME-1810.iso并运行了它，它可以管理我的 NUC6i3SYH 的有线和无线硬件。它的启动就像 Ubuntu 18.04.1 LTS 一样容易。但我已经很久没有测试过稳定性了。
编辑3：您应该考虑硬件可能会损坏（例如变热时出现故障）。但如果它与其他操作系统运行良好，则可以断定硬件是好的。
你们的 NUC 硬件是什么时候开发的，CentOS 7 软件是什么时候开发的？
Centos 7 有一个旧的内核系列，3.10；当前系统“1810”中的内核版本是
3.10.0-957.el7.x86_64 #1 SMP. Ubuntu 18.04.1 live 的内核版本为 4.15.0-29，最新安装的系统为 4.15.0-43。- 请尝试使用具有较新 Linux 内核和较新硬件驱动程序的另一个操作系统。