Alpine鏡像中的telnet在3.7版本后被轉(zhuǎn)移至busybox-extras包中,需要使用apk單獨安裝。
現(xiàn)象
Alpine版本為3.8, 不再有指向busybox的telent
~ # cat /etc/alpine-release3.8.0~ #~ # ls /usr/bin/ |grep -w busybox |grep telnet~ #
原因
確認(rèn)了相關(guān)的issue發(fā)現(xiàn),在Alpine3.7時就已經(jīng)有了這個變化:https://github.com/gliderlabs/docker-alpine/issues/397
對應(yīng)
使用apk安裝即可
apk update
/var/atlassian/jira # apk updatefetch http://dl-cdn.alpinelinux.org/alpine/v3.8/main/x86_64/APKINDEX.tar.gzfetch http://dl-cdn.alpinelinux.org/alpine/v3.8/community/x86_64/APKINDEX.tar.gzv3.8.0-28-g923d74cddf [http://dl-cdn.alpinelinux.org/alpine/v3.8/main]v3.8.0-28-g923d74cddf [http://dl-cdn.alpinelinux.org/alpine/v3.8/community]OK: 9536 distinct packages available/var/atlassian/jira #
apk add busybox-extras
/var/atlassian/jira # apk add busybox-extras(1/1) Installing busybox-extras (1.28.4-r1)Executing busybox-extras-1.28.4-r1.post-installExecuting busybox-1.28.4-r0.triggerOK: 133 MiB in 76 packages/var/atlassian/jira #
安裝后確認(rèn)
確認(rèn)telnet安裝路徑
/var/atlassian/jira # which telnet/usr/bin/telnet/var/atlassian/jira #~ # ls -l /usr/bin/telnetlrwxrwxrwx 1 root root 19 Jul 24 01:40 /usr/bin/telnet -> /bin/busybox-extras~ # ls /bin/busybox
確認(rèn)動作
在網(wǎng)絡(luò)通的情況下,telnet可以與smtp服務(wù)器進行通信
~ # telnet smtp.163.com 25220 163.com Anti-spam GT for Coremail System (163com[20141201])HELO liumiaocn250 OK
總結(jié)
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