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mysqld: page allocation failure. order:4, mode:0x10c0d0
mysqld：为被分配内存的程序。order：表示需要分配连续页的数量（2^order），本例中4则表示 2^4 = 16 个连续的页。mode：内存分配模式的标识，在内核源码文件 include/linux/gfp.h 中定义，通常是多个标识项与运算的结果。不同版本内核有一定区别。例如。在新版内核中 GFP_KERNEL 是 __GFP_RECLAIM | __GFP_IO | __GFP_FS 的运算结果，而 __GFP_RECLAIM 是 ___GFP_DIRECT_RECLAIM|___GFP_KSWAPD_RECLAIM 的运算结果。v2.6.33 - v4.6）：runc:[1:CHILD]: page allocation failure: order:6, mode:0x10c0d0
Jan 23 14:15:31 dc05 dockerd: time="2019-01-23T14:15:31.288446233+08:00" level=error msg="containerd: start container" error="oci runtime error: container_linux.go:247: starting container process caused \\"process_linux.go:245: running exec setns process for init caused \\\\\\"exit status 6\\\\\\"\\"\\n" id=5b9be8c5bb121264899fac8d9d36b02150269d41ce96ba6ad36d70b8640cb01cJan 23 14:15:31 dc05 dockerd: time="2019-01-23T14:15:31.317965799+08:00" level=error msg="Create container failed with error: invalid header field value \\"oci runtime error: container_linux.go:247: starting container process caused \\\\\\"process_linux.go:245: running exec setns process for init caused \\\\\\\\\\\\\\"exit status 6\\\\\\\\\\\\\\"\\\\\\"\\\\n\\""
Jan 23 14:15:31 dc05 kubelet: E0123 14:15:31.352386 26037 remote_runtime.go:91] RunPodSandbox from runtime service failed: rpc error: code = 2 desc = failed to start sandbox container for pod "matchdataserver-1255064836-t4b2w": Error response from daemon: {"message":"invalid header field value \\"oci runtime error: container_linux.go:247: starting container process caused \\\\\\"process_linux.go:245: running exec setns process for init caused \\\\\\\\\\\\\\"exit status 6\\\\\\\\\\\\\\"\\\\\\"\\\\n\\""}Jan 23 14:15:31 dc05 kubelet: E0123 14:15:31.352496 26037 kuberuntime_sandbox.go:54] CreatePodSandbox for pod "matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)" failed: rpc error: code = 2 desc = failed to start sandbox container for pod "matchdataserver-1255064836-t4b2w": Error response from daemon: {"message":"invalid header field value \\"oci runtime error: container_linux.go:247: starting container process caused \\\\\\"process_linux.go:245: running exec setns process for init caused \\\\\\\\\\\\\\"exit status 6\\\\\\\\\\\\\\"\\\\\\"\\\\n\\""}Jan 23 14:15:31 dc05 kubelet: E0123 14:15:31.352518 26037 kuberuntime_manager.go:618] createPodSandbox for pod "matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)" failed: rpc error: code = 2 desc = failed to start sandbox container for pod "matchdataserver-1255064836-t4b2w": Error response from daemon: {"message":"invalid header field value \\"oci runtime error: container_linux.go:247: starting container process caused \\\\\\"process_linux.go:245: running exec setns process for init caused \\\\\\\\\\\\\\"exit status 6\\\\\\\\\\\\\\"\\\\\\"\\\\n\\""}Jan 23 14:15:31 dc05 kubelet: E0123 14:15:31.352580 26037 pod_workers.go:182] Error syncing pod 485fd485-1ed6-11e9-8661-0a587f8021ea ("matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)"), skipping: failed to "CreatePodSandbox" for "matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)" with CreatePodSandboxError: "CreatePodSandbox for pod \\"matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)\\" failed: rpc error: code = 2 desc = failed to start sandbox container for pod \\"matchdataserver-1255064836-t4b2w\\": Error response from daemon: {\\"message\\":\\"invalid header field value \\\\\\"oci runtime error: container_linux.go:247: starting container process caused \\\\\\\\\\\\\\"process_linux.go:245: running exec setns process for init caused \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"exit status 6\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"\\\\\\\\\\\\\\"\\\\\\\\n\\\\\\"\\"}"Jan 23 14:15:31 dc05 kubelet: I0123 14:15:31.372181 26037 kubelet.go:1916] SyncLoop (PLEG): "matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)", event: &pleg.PodLifecycleEvent{ID:"485fd485-1ed6-11e9-8661-0a587f8021ea", Type:"ContainerDied", Data:"5b9be8c5bb121264899fac8d9d36b02150269d41ce96ba6ad36d70b8640cb01c"}Jan 23 14:15:31 dc05 kubelet: W0123 14:15:31.372225 26037 pod_container_deletor.go:77] Container "5b9be8c5bb121264899fac8d9d36b02150269d41ce96ba6ad36d70b8640cb01c" not found in pod's containersJan 23 14:15:31 dc05 kubelet: I0123 14:15:31.678211 26037 kuberuntime_manager.go:383] No ready sandbox for pod "matchdataserver-1255064836-t4b2w_basic(485fd485-1ed6-11e9-8661-0a587f8021ea)" can be found. Need to start a new one
cat /proc/buddyinfo 查看 slab，系统不存在大块内存时返回0数量较多。如下所示：$ cat /proc/buddyinfoNode 0, zone DMA 1 0 1 0 2 1 1 0 1 1 3Node 0, zone DMA32 2725 624 489 178 0 0 0 0 0 0 0Node 0, zone Normal 1163 1101 932 222 0 0 0 0 0 0 0
echo 3 > /proc/sys/vm/drop_caches
echo 1 > /proc/sys/vm/compact_memory
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