佈署環境爲debian 7.5node
佈署到一臺新機器,系統版本爲debian 8.0linux
原啓動項web
/etc/init.d/mongo_servicedocker
開機竟然沒法自起shell
開機自啓動不能用了,看頁面輸出就發覺不對勁,肯定是systemd,以前搭建部署coreos(也是用的systemd) docker kubernetes接觸過,很親切,只是遷移要費點時間。api
原來debian升級8.0後,改成用systemd管理啓動項。spa
查資料知,兼容原啓動管理,systemd 會自動生成 unit。日誌
輸入code
systemctl enable mongo_serviceblog
systemd 會根據原/etc/init.d/mongo_service的內容自動建立一個新的 service 內容以下
root@debian:~# systemctl cat mongo_service.service # /run/systemd/generator.late/mongo_service.service # Automatically generated by systemd-sysv-generator [Unit] SourcePath=/etc/init.d/mongo_service Description=LSB: An object/document-oriented database Before=runlevel2.target runlevel3.target runlevel4.target runlevel5.target shutdown.target After=network-online.target local-fs.target remote-fs.target nss-lookup.target Wants=network-online.target Conflicts=shutdown.target [Service] Type=forking Restart=no TimeoutSec=5min IgnoreSIGPIPE=no KillMode=process GuessMainPID=no RemainAfterExit=yes SysVStartPriority=1 ExecStart=/etc/init.d/mongo_service start ExecStop=/etc/init.d/mongo_service stop
reboot 啓動 OK
試了試forever 的開機自起。
這東西曾經比較麻煩,寫在rc裏,執行不起來。
通常的解決辦法是是寫個shell執行 foreve 再把這個shell加爲service 並設置開機啓動。
到了systemd這裏,很是簡單。
只要設個service就行。
內容以下
# /etc/systemd/system/hellowordweb.service [Unit] Description=hello wrod web site After=mongo_service.service Wants=network-online.target Conflicts=shutdown.target [Service] Type=forking Restart=no TimeoutSec=5min ExecStart=/bin/forever start /root/hellowordweb/bin/cluster.js ExecStop=/bin/forever stop /root/hellowordweb/bin/cluster.js
如下是啓動日誌
root@debian:~# systemctl status hellowordweb.service
hellowordweb.service - xiaoyun audit web site Loaded: loaded (/etc/systemd/system/hellowordweb.service; enabled) Active: active (running) since Mon 2015-06-01 06:22:49 EDT; 1s ago Process: 1128 ExecStart=/bin/forever start /root/hellowordweb/bin/cluster.js (code=exited, status=0/SUCCESS) Main PID: 1133 (node) CGroup: /system.slice/hellowordweb.service ├─1133 /root/node-v0.12.4-linux-x64/bin/node /lib/node_modules/forever/bin/monitor /root/hellowordweb/bin/cluster.js ├─1134 test-xiaoyun-data-api: master ├─1135 test-xiaoyun-data-api: worker 1 └─1136 test-xiaoyun-data-api: worker 2