ubuntu18.04環境下， Kubernetes 安裝CRI-O，無法啓動的問題

1、問題

• Kubernetes 官網教程安裝CRI-O，執行 systemctl start crio 啓動失敗
• 環境 ubuntu 18.04

2、錯誤信息

crio.service - Container Runtime Interface for OCI (CRI-O)
   Loaded: loaded (/usr/lib/systemd/system/crio.service; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Thu 2020-02-13 17:13:04 CST; 41s ago
     Docs: https://github.com/cri-o/cri-o
  Process: 1990 ExecStart=/usr/bin/crio $CRIO_STORAGE_OPTIONS $CRIO_NETWORK_OPTIONS $CRIO_METRICS_OPTIONS (code=e
 Main PID: 1990 (code=exited, status=1/FAILURE)

Feb 13 17:13:04 VM-0-8-ubuntu systemd[1]: Starting Container Runtime Interface for OCI (CRI-O)...
Feb 13 17:13:04 VM-0-8-ubuntu crio[1990]: time="2020-02-13 17:13:04.131725565+08:00" level=fatal msg="library con
Feb 13 17:13:04 VM-0-8-ubuntu systemd[1]: crio.service: Main process exited, code=exited, status=1/FAILURE
Feb 13 17:13:04 VM-0-8-ubuntu systemd[1]: crio.service: Failed with result 'exit-code'.
Feb 13 17:13:04 VM-0-8-ubuntu systemd[1]: Failed to start Container Runtime Interface for OCI (CRI-O).

3、解決方法

• 執行命令

$ sudo sed 's|/usr/libexec/crio/conmon|/usr/bin/conmon|' -i /etc/crio/crio.conf

• 問題分析一：
  我的系統出錯的原因跟 ubuntu18.04 有關，官方的運行環境爲 ubuntu16.04
  參考：https://github.com/cri-o/cri-o/issues/2903
• 問題分析二：
  最先嚐試的解決訪問是 參照 https://github.com/cri-o/cri-o/issues/1767 這個帖子的，但仍未解決問題，後來才懷疑是操作系統的原因。

---