【docker】unable to apply cgroup configuration

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试图根据 https://blog.laoda.de/archives/docker-compose-install-searxng 部署 searxng，在 docker-compose up -d 后报错：

Creating redis …
Creating searxng … error
Creating redis … errore to apply cgroup configuration: mkdir /sys/fs/cgroup/memory/docker/ac59c98a02d4bbfc0ef0793d7c2179de23d34302f4bdb8ee8a9f26883e9855aa: cannot allocate memory: unknown
ERROR: for redis Cannot start service redis: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: unable to apply cgroup configuration: mkdir /sys/fs/cgroup/memory/docker/a8fb0eb3a6865509a739cc9253d2a24f0ce4ea14c9eaf60ebe6209f3d9e80b2f: cannot allocate memory: unknown
ERROR: for searxng Cannot start service searxng: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: unable to apply cgroup configuration: mkdir /sys/fs/cgroup/memory/docker/ac59c98a02d4bbfc0ef0793d7c2179de23d34302f4bdb8ee8a9f26883e9855aa: cannot allocate memory: unknown
ERROR: for redis Cannot start service redis: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: unable to apply cgroup configuration: mkdir /sys/fs/cgroup/memory/docker/a8fb0eb3a6865509a739cc9253d2a24f0ce4ea14c9eaf60ebe6209f3d9e80b2f: cannot allocate memory: unknown
ERROR: Encountered errors while bringing up the project.

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根据 Cannot allocate memory，认为可能是进程数超限导致，于是查看实例内存使用率是否过高

[email protected]:~/data/docker_data/searxng/searxng-docker# sysctl -a | grep pid_max
kernel.pid_max = 32768
[email protected]:~/data/docker_data/searxng/searxng-docker# pstree -p | wc -l
68

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总进程数似乎未达到 pid_max。请问神通的 mjj，这是哪里出了问题？

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注册：这个简直就是天书啊

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