Re: lug-bg: Remote linux upgrade

[danchev@email.domain.hidden (George Danchev)]

On 08 04 2003 17:42, Konstantin Angelov wrote:
<em class="quotelev1">> Mori me edin vupros na koito bih iskal da znam otgovora.
<em class="quotelev1">> Situaciata e slednata: PC sus instaliran slack.Niama console
<em class="quotelev1">> connection.Niama i fizicheski dostup do PCto. E li vuzmojno da se
<em class="quotelev1">> instalira debian vurhu slack-a prez internet i ako - kak?

Maj nesto nerazbrah tuka... ;-)

1. Sled kato nqmash fizi4eski dostyp do machinata kakto i remote console 
connection kak mislish da se log-nesh.
2. Mnogo unsafe dejstvie e da se install-ve edna distro vyrhu druga, stoto vse 
pak v krajna smetka ste se polu4i 4e zapishvash files otgore vurhu 
systestvuvasti ve4e files, da ne govorim 4e novata sistema mozhe da e 
installed na razli4en po tip i broj partitions... o4eizvadno ste ostane bunch 
of cruft (old useless/bad stuff) - neopredelena po koli4estvo, t.k. trudno 
determiruema veli4ina;-) v zavisimost kakvo e instal-nato ot starata distro i 
kakvo se install-va otnovata... T.e. "do not do overwrite, do replace", stoto 
trudno ste ustanovish iste se ubedish 4e pri overwrite ste ima pylno 
pripokritie na starite files s novite, da ne govorim kolko vreme ste ti 
trqbva za ustanovqvaneto na tov, ako go "track-vash do dupka".

3. Ako iskash opitaj da si upgrade-nesh Slack s nqkoq unofficial 
util-ka (search linux-bg.org), no se backup-ni predi tova. Ako slack-a e 
dosta star ne go my4i s upgrades i ako ne se nalaga naistina "leave it as is". 

4. Ako ste migrirash kym druga distro i neiskash da pravish full preinstallna 
4isto to mozhe da razhvyrlish/backup-nesh segashnata systema na nqkolko 
partitions, t.e. da otdelish 4isto system files ot tvojte personal local 
files, zapazvash tvojte personal data samo, drugo del. Naprimer backup 
/etc....  /usr/local/ , /home/ , /root , /var/www i tam oste kakvoto si e 
tvoe,  mqtash na otdelni partitions (ili partition) i samo 
del-vash tova deto e na (bivshata) root filesystem i drugite fs na koito ima 
systemni files, e.g. Slack-a (razbira se boot-nat si otdruga media Knoppix 
LiveCD da re4em...) i tam posle mqtash Debian Base (ot Knoppix LiveCD da 
re4em s scripta /usr/local/bin/knx-hdinstall). Sled tova, reshavash koe na 
kyde ste mestish otbaknatite filesystems i vmykvash obratno. Imaj predvid 4e 
ako na dadena filesystem imash directories i v nqkoq ot tqh ima 
files&directories i ti montirash tam (v tazi directory) filesystem ( koqto ne 
e bila montirana do momenta) to tova staroto deto e v tazi directory ne se 
gubi, prosto si ostava na starata fajlova sistema, a ti vizhdash 
sydyrzhanieto ot novata filesystema koqto si montiral, pri umount-vaneto na 
koqto pak dostypvash tova sydyrzhanie ot starata filesystem koeto si vizhdal 
predi montiraneto... da ne obyrkash /etc-tata samo, opredeleno staroto /etc/, 
trudno ste go polzvash v novata systema ej taka napravo ili overwrite-vajki 
staroto, t.e. trqbva da merge manually, monitorvajki zdravo s diff storoto i 
novoto /etc ;-)... da ne si zatriesh userite ... think predi da mestish 
nesto. Az si pisah na list hartiq edin pyt za tova koe kyde otiva ot starata 
sistema i posle kak ste go vrystam v novata i ne mozhah da sgazq luka. No 
tova e kakto sedoseshtash dosta time consuming & brainstorm meropriqtie ;-)

5. Ako sistemata beshe Debian, i imashe remote ili local accessdo machinata, 
to upgrade-a ot given selection ot packages kym new one e syvsem routine, but 
flexible procedure. 


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pub  4096R/0E4BD0AB 2003-03-18 (no comments) <danchev_at_spnet.net> 
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